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        92 Contract API jobs in Buckinghamshire + 20 miles

        Senior API Technical Consultant (GraphQL Specialist)

        Staffworx Limited
        Slough (SL1)
        market rates, outside IR35, 2 days on site
        Design and buildnext generation of high-scale SaaS platforms. We're looking for a senior/lead engineering consultant with deep expertise in GraphQL to take a leading role in developing our robust TypeScript/Node.js backend. You will be instrumental in shaping our technical direction, driving the evolution of our APIs, ensuring our services are resilient, scalable and secure within a cutting-edge, cloud-native environment (Helm, Kubernetes). The Deliverables * Design and buildsophisticated, scalable GraphQL APIs and backend services using TypeScript and Node.js. * Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Champion best practicein code quality, automated testing (Vitest, Playwright) and observability to deliver resilient, maintainable, and production-ready business logic.
        Design and buildnext generation of high-scale SaaS platforms. We're looking for a senior/lead engineering consultant with deep expertise in GraphQL to take a leading role in developing our robust TypeScript/Node.js backend. You will be instrumental in shaping our technical direction, driving the evolution of our APIs, ensuring our services are resilient, scalable and secure within a cutting-edge, cloud-native environment (Helm, Kubernetes). The Deliverables * Design and buildsophisticated, scalable GraphQL APIs and backend services using TypeScript and Node.js. * Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Champion best practicein code quality, automated testing (Vitest, Playwright) and observability to deliver resilient, maintainable, and production-ready business logic.
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        Payment Architect

        Stackstudio Digital Ltd.
        Northampton, Northamptonshire
        Unspecified
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
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        NEW

        Payment Architect

        Stackstudio Digital Ltd.
        Luton, Bedfordshire
        Unspecified
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
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        NEW

        Payment Architect

        Stackstudio Digital Ltd.
        Watford, Hertfordshire
        Unspecified
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
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        NEW
        Description ADP is hiring a Business Resiliency Planner Are you looking to build a career in Business Resiliency in a global company that offers career advancement opportunities throughout your career journey? Are you looking to join a global company with a culture of inclusion, collaboration and belonging? Well, this may be the right fit for you. Ready to make your mark? In this role, you will be responsible for protecting the organizations business assets through a Global Business Resiliency Program that establishes a single framework for how ADP manages, and controls risks associated with the recovery from business disruptions and disaster events. You will be involved in providing insight, guidance, and direction on the continued development and effectiveness of the global Business Resiliency Program.
        Description ADP is hiring a Business Resiliency Planner Are you looking to build a career in Business Resiliency in a global company that offers career advancement opportunities throughout your career journey? Are you looking to join a global company with a culture of inclusion, collaboration and belonging? Well, this may be the right fit for you. Ready to make your mark? In this role, you will be responsible for protecting the organizations business assets through a Global Business Resiliency Program that establishes a single framework for how ADP manages, and controls risks associated with the recovery from business disruptions and disaster events. You will be involved in providing insight, guidance, and direction on the continued development and effectiveness of the global Business Resiliency Program.
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        NEW
        Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
        Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
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        NEW
        We are looking for the right people people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the worlds largest providers of products and services to the global energy industry. Job Duties We are seeking a skilled and proactive Data Integration Engineer to join the Neftex Technical Services team. Reporting to the Team Lead the Data Integration Engineer will be responsible for designing, building, and maintaining robust data pipelines and integration frameworks that connect diverse systems including LLMs and a proprietary Data Integration solution.
        We are looking for the right people people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the worlds largest providers of products and services to the global energy industry. Job Duties We are seeking a skilled and proactive Data Integration Engineer to join the Neftex Technical Services team. Reporting to the Team Lead the Data Integration Engineer will be responsible for designing, building, and maintaining robust data pipelines and integration frameworks that connect diverse systems including LLMs and a proprietary Data Integration solution.
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        NEW
        £Up to £60,000 GBP Hybrid WORKING Location: Northampton , Northampton, East Midlands - United Kingdom Type: Permanent Join a globally recognised financial powerhouse where your work helps shape the future of banking, payments, and digital financial services. Our client is one of the most influential institutions in the UK's financial landscape - known for driving innovation, championing technology-enabled transformation, and investing heavily in its people. As a Business Analyst, you'll play a pivotal role in delivering high-impact programmes that underpin the stability, efficiency, and evolution of critical banking and payment systems. You'll partner with experts across technology, change, and operations to analyse complex business needs, define clear requirements, and translate them into solutions that deliver measurable value across the organisation.
        £Up to £60,000 GBP Hybrid WORKING Location: Northampton , Northampton, East Midlands - United Kingdom Type: Permanent Join a globally recognised financial powerhouse where your work helps shape the future of banking, payments, and digital financial services. Our client is one of the most influential institutions in the UK's financial landscape - known for driving innovation, championing technology-enabled transformation, and investing heavily in its people. As a Business Analyst, you'll play a pivotal role in delivering high-impact programmes that underpin the stability, efficiency, and evolution of critical banking and payment systems. You'll partner with experts across technology, change, and operations to analyse complex business needs, define clear requirements, and translate them into solutions that deliver measurable value across the organisation.
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        NEWPREMIUM

        Principal Engineer

        Kingston Barnes Engineering
        Keeley Green, Bedford (MK42), MK42
        £80,000 per annum holiday, pension, sick pay, life assurance
        Bedford Up to £80,000 Kingston Barnes is currently recruiting for a Principal Engineer on behalf of our client in the Bedford area. Our client is a well-known manufacturer of pumping plant for the water or wastewater industry. You will provide technical leadership, drive engineering excellent and best practice, mentor the engineering teams, and ensure the team delivers high quality equipment to their customers. Alongside this youll collaborate * Lead innovation and R&D to bring new ideas and technologies into the company. * Improve how projects are reviewed and approved * Translate customer needs into clear technical requirements for the design, testing and manufacturing teams. * Shape product strategy, working closely with sales to ensure products match market demand. * Integrate technology from the parent company into local products where beneficial.
        Bedford Up to £80,000 Kingston Barnes is currently recruiting for a Principal Engineer on behalf of our client in the Bedford area. Our client is a well-known manufacturer of pumping plant for the water or wastewater industry. You will provide technical leadership, drive engineering excellent and best practice, mentor the engineering teams, and ensure the team delivers high quality equipment to their customers. Alongside this youll collaborate * Lead innovation and R&D to bring new ideas and technologies into the company. * Improve how projects are reviewed and approved * Translate customer needs into clear technical requirements for the design, testing and manufacturing teams. * Shape product strategy, working closely with sales to ensure products match market demand. * Integrate technology from the parent company into local products where beneficial.
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        Description and requirements Skanska, one of the worlds leading project development and construction groups, is an inclusive and responsible business that is helping to build a better society. We are looking for a Head of Data & Analytics to join our Technology & Sustainability team in Leavesden (Watford). The Head of Data Analytics will be responsible for setting the strategic direction, governance, and delivery of data capabilities across the organisation. * Be accountable for defining and executing the organisations data and analytics strategy, aligning it with business priorities and regulatory requirements. * Lead the Data Analytics and Engineering function, ensuring seamless collaboration across Analysts, Engineers, Architects, and Governance specialists, and preparing for the future integration of Data Science.
        Description and requirements Skanska, one of the worlds leading project development and construction groups, is an inclusive and responsible business that is helping to build a better society. We are looking for a Head of Data & Analytics to join our Technology & Sustainability team in Leavesden (Watford). The Head of Data Analytics will be responsible for setting the strategic direction, governance, and delivery of data capabilities across the organisation. * Be accountable for defining and executing the organisations data and analytics strategy, aligning it with business priorities and regulatory requirements. * Lead the Data Analytics and Engineering function, ensuring seamless collaboration across Analysts, Engineers, Architects, and Governance specialists, and preparing for the future integration of Data Science.
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        Front End Engineer

        InfinityQuest Ltd,
        Harmondsworth, West Drayton (UB7)
        Unspecified
        Required Skills & Experience * 10+ years in enterprise frontend engineering in AI/data environments. * Expertise in Tableau and/or PowerBI for rapid prototyping and stakeholder engagement * Deep hands-on experience with modern frontend frameworks (React, Typescript, etc) * Hands-on experience with cloud platforms (AWS preferred); familiarity with scalable deployment and integration * Strong knowledge of API integration. * Proven experience in developing, testing, and deploying robust frontend solutions into production environments, ensuring reliability, scalability, and maintainability beyond proof-of-concept or prototype stages. * Familiarity with airline or logistics data domains is a plus. * Significant experience in similar roles, with a proven ability to integrate quickly into new teams and deliver immediate value.
        Required Skills & Experience * 10+ years in enterprise frontend engineering in AI/data environments. * Expertise in Tableau and/or PowerBI for rapid prototyping and stakeholder engagement * Deep hands-on experience with modern frontend frameworks (React, Typescript, etc) * Hands-on experience with cloud platforms (AWS preferred); familiarity with scalable deployment and integration * Strong knowledge of API integration. * Proven experience in developing, testing, and deploying robust frontend solutions into production environments, ensuring reliability, scalability, and maintainability beyond proof-of-concept or prototype stages. * Familiarity with airline or logistics data domains is a plus. * Significant experience in similar roles, with a proven ability to integrate quickly into new teams and deliver immediate value.
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        NEW

        Payment Architect

        Stackstudio Digital Ltd.
        Milton Keynes (MK1)
        Unspecified
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
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        We are seeking a dynamic scientific and technical leader to build and direct a new Discovery Applied AI/ML group a team dedicated to transforming how we discover medicines by embedding state-of-the-art AI/ML directly into our discovery workflows, platforms, and decision-making. We designed this role for someone with a desire to advance scientific knowledge and harness the revolution in AI/ML, automation, and predictive sciences to deliver measurable impacts across the drug discovery procress on the success and progression of our medicine discovery portfolio. This group will operate as the applied AI/ML engine and thought partner for GSKs Discovery functions, working in close partnership with Discovery Data Sciences and other R&D teams. * Focus on AI/ML innovation, engineering, and productization (e.g., generative design tools, active learning loops, LIAL frameworks)
        We are seeking a dynamic scientific and technical leader to build and direct a new Discovery Applied AI/ML group a team dedicated to transforming how we discover medicines by embedding state-of-the-art AI/ML directly into our discovery workflows, platforms, and decision-making. We designed this role for someone with a desire to advance scientific knowledge and harness the revolution in AI/ML, automation, and predictive sciences to deliver measurable impacts across the drug discovery procress on the success and progression of our medicine discovery portfolio. This group will operate as the applied AI/ML engine and thought partner for GSKs Discovery functions, working in close partnership with Discovery Data Sciences and other R&D teams. * Focus on AI/ML innovation, engineering, and productization (e.g., generative design tools, active learning loops, LIAL frameworks)
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        ClearCourse Technical Support Lead (Payments / API / Incident Management) Location: Reading Competitive salary + benefits ClearAccept is expanding, and were hiring a Technical Support Lead to take ownership of technical incidents, escalations and support processes for our cloud-native payments platform used by 5,000+ merchants. This is a high-impact role where youll work closely with Engineering, SRE, DevOps, Product and Operations to keep our platform stable and continuously improving as we scale. What Youll Be Doing * Lead and manage technical incidents and escalations * Triage and prioritise support tickets with Dev/SRE/DevOps * Investigate issues using Datadog, Postman, SQL, MongoDB * Analyse API logs, JSON payloads and system behaviour * Support merchant onboarding, transaction flows & payouts * Build and improve incident processes, SLAs and playbooks
        ClearCourse Technical Support Lead (Payments / API / Incident Management) Location: Reading Competitive salary + benefits ClearAccept is expanding, and were hiring a Technical Support Lead to take ownership of technical incidents, escalations and support processes for our cloud-native payments platform used by 5,000+ merchants. This is a high-impact role where youll work closely with Engineering, SRE, DevOps, Product and Operations to keep our platform stable and continuously improving as we scale. What Youll Be Doing * Lead and manage technical incidents and escalations * Triage and prioritise support tickets with Dev/SRE/DevOps * Investigate issues using Datadog, Postman, SQL, MongoDB * Analyse API logs, JSON payloads and system behaviour * Support merchant onboarding, transaction flows & payouts * Build and improve incident processes, SLAs and playbooks
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        PREMIUM
        Role - .Net Engineer Location - Hybrid, Home and twice a month onsite (multiple locations) Contract - Initial 3 months, high probability of extension to 2027 Rate - £475 to £525 per day Start - ASAP This role has been deemed Inside IR35. You must hold active SC Clearance to be eligible for this role. The Opportunity We are working in partnership with a leading defence systems integrator to recruit a .Net Engineer for a major long-term programme of work. This is an exciting opportunity to join a highly capable engineering team delivering innovative software solutions across complex and mission-critical environments. If you’re looking to broaden your technical exposure; particularly across modern data platforms and integration technologies—this role offers the chance to grow within a dynamic, fast-moving setting where no two challenges are the same. The Role
        Role - .Net Engineer Location - Hybrid, Home and twice a month onsite (multiple locations) Contract - Initial 3 months, high probability of extension to 2027 Rate - £475 to £525 per day Start - ASAP This role has been deemed Inside IR35. You must hold active SC Clearance to be eligible for this role. The Opportunity We are working in partnership with a leading defence systems integrator to recruit a .Net Engineer for a major long-term programme of work. This is an exciting opportunity to join a highly capable engineering team delivering innovative software solutions across complex and mission-critical environments. If you’re looking to broaden your technical exposure; particularly across modern data platforms and integration technologies—this role offers the chance to grow within a dynamic, fast-moving setting where no two challenges are the same. The Role
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        ServiceNow Architect

        Syntax Consultancy Limited
        Reading, Berkshire, RG1 1LZ
        500-525/day (Outside IR35)
        6 Month Contract Reading (Hybrid) £500-525/day (Outside IR35) Start ideally in Dec 2025 / Jan 2026. A chance to work with a global IT Consultancy on a ServiceNow design + integration project for an external client. Hybrid Working - 2 days/week working remotely (WFH) + 3 days/week working from the office in Reading. Paying up to £525/day (Outside IR35). * In-depth hands-on ServiceNow Architecture expertise including design, configuration + implementation. * Deep ServiceNow modules + workflows experience including: ITSM, ITOM, Discovery, ITAM, CSM, HRSD, SecOps, GRC). * Managing integrations between ServiceNow and other systems (via REST, SOAP APIs, IntegrationHub, MID Server, custom integrations), ensuring reliability, security, latency, error handling, monitoring. * Defining + implementing technical governance, architecture operating models, and instance strategy.
        6 Month Contract Reading (Hybrid) £500-525/day (Outside IR35) Start ideally in Dec 2025 / Jan 2026. A chance to work with a global IT Consultancy on a ServiceNow design + integration project for an external client. Hybrid Working - 2 days/week working remotely (WFH) + 3 days/week working from the office in Reading. Paying up to £525/day (Outside IR35). * In-depth hands-on ServiceNow Architecture expertise including design, configuration + implementation. * Deep ServiceNow modules + workflows experience including: ITSM, ITOM, Discovery, ITAM, CSM, HRSD, SecOps, GRC). * Managing integrations between ServiceNow and other systems (via REST, SOAP APIs, IntegrationHub, MID Server, custom integrations), ensuring reliability, security, latency, error handling, monitoring. * Defining + implementing technical governance, architecture operating models, and instance strategy.
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        Pen Tester

        Stackstudio Digital Ltd.
        Reading (RG1)
        From £400 to £410 per day
        Role/Job Title:Pen Tester Work Location: Reading (3days) The Role We're looking for a Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing. You shall also perform in-depth analysis of penetration testing results and create a report that describes findings, exploitation procedures, risks and recommendations. Please include a brief outline of the impact this role will have, including overview of customer industry and projects, access to cutting-edge technology etc. Do NOT include customer name. Your Responsibilities (Up to 10, avoiding repetition)
        Role/Job Title:Pen Tester Work Location: Reading (3days) The Role We're looking for a Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing. You shall also perform in-depth analysis of penetration testing results and create a report that describes findings, exploitation procedures, risks and recommendations. Please include a brief outline of the impact this role will have, including overview of customer industry and projects, access to cutting-edge technology etc. Do NOT include customer name. Your Responsibilities (Up to 10, avoiding repetition)
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        Lead Software Engineer IoT & Full-Stack Location: Hybrid / Bicester Type: Permanent Salary: Competitive, market-based TUAL Technology is an innovative, VC-backed start-up based in Bicester, developing PowerUp a high-power EV charging solution designed for grid-constrained sites. By integrating battery storage, smart energy management, and ultra-fast DC charging, TUAL delivers seamless electrification where traditional grid capacity falls short. Working with enterprise customers across Europe, TUAL is transforming the productivity and profitability of electric commercial vehicle fleets through a portfolio of intelligent, software-defined, cloud and IoT-enabled charging solutions. The Role Were looking for a hands-on Lead Software Engineer to own the design and delivery of our IoT and cloud software platform.
        Lead Software Engineer IoT & Full-Stack Location: Hybrid / Bicester Type: Permanent Salary: Competitive, market-based TUAL Technology is an innovative, VC-backed start-up based in Bicester, developing PowerUp a high-power EV charging solution designed for grid-constrained sites. By integrating battery storage, smart energy management, and ultra-fast DC charging, TUAL delivers seamless electrification where traditional grid capacity falls short. Working with enterprise customers across Europe, TUAL is transforming the productivity and profitability of electric commercial vehicle fleets through a portfolio of intelligent, software-defined, cloud and IoT-enabled charging solutions. The Role Were looking for a hands-on Lead Software Engineer to own the design and delivery of our IoT and cloud software platform.
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        Lead .Net Software Developer

        Hireful
        Milton Keynes, Buckinghamshire, MK9
        £65k - £75k base salary + bonus and great benefits
        Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer Salary: £65k - £75k base + Bonus Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more Location: Milton Keynes – Hybrid (2 days a week in office)
        Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer Salary: £65k - £75k base + Bonus Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more Location: Milton Keynes – Hybrid (2 days a week in office)
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        FEATURED
        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
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        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
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        Senior Azure Data Engineer

        Young's Employment Services Ltd
        West London (W5)
        circ £70,000 - £80,000 DOE
        Hybrid - Work From Home and West London Circ £70,000 - £80,000 + Range of benefits A well-known and prestigious business is looking to add a Senior Azure Data Engineer to their data team. This is an exciting opportunity for a Data Engineer that's not just technical, but also enjoys directly engaging and collaborating with stakeholders from across business functions such as finance, operations, planning, manufacturing, retail, e-commerce etc. Having nearly completed the process of migrating data from their existing on-prem databases to an Azure Cloud based platform, the Senior Data Engineer will play a key role in helping make best use of the data by gathering and agreeing requirements with the business to build data solutions that align accordingly.
        Hybrid - Work From Home and West London Circ £70,000 - £80,000 + Range of benefits A well-known and prestigious business is looking to add a Senior Azure Data Engineer to their data team. This is an exciting opportunity for a Data Engineer that's not just technical, but also enjoys directly engaging and collaborating with stakeholders from across business functions such as finance, operations, planning, manufacturing, retail, e-commerce etc. Having nearly completed the process of migrating data from their existing on-prem databases to an Azure Cloud based platform, the Senior Data Engineer will play a key role in helping make best use of the data by gathering and agreeing requirements with the business to build data solutions that align accordingly.
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        The Role The BMC Helix Technical Delivery Authority is responsible for end-to-end delivery of BMC Helix solutions, ensuring technical integrity, seamless integration with external systems, and alignment with business objectives. This role combines solution architecture, technical leadership, and project governance to deliver complex ITSM solutions on time and within budget. * Define and validate BMC Helix architecture (ITSM Suite, Digital Workplace, CMDB, Smart IT). * Design scalable, secure, and maintainable solutions leveraging BMC Helix Innovation Studio and Business Workflows. * Ensure compliance with ITIL best practices and enterprise standards. * Architect and implement integrations with third-party systems (eg, Active Directory, Orchestrators, Service Assurance tools). * Configure web services, APIs, and middleware for seamless data exchange.
        The Role The BMC Helix Technical Delivery Authority is responsible for end-to-end delivery of BMC Helix solutions, ensuring technical integrity, seamless integration with external systems, and alignment with business objectives. This role combines solution architecture, technical leadership, and project governance to deliver complex ITSM solutions on time and within budget. * Define and validate BMC Helix architecture (ITSM Suite, Digital Workplace, CMDB, Smart IT). * Design scalable, secure, and maintainable solutions leveraging BMC Helix Innovation Studio and Business Workflows. * Ensure compliance with ITIL best practices and enterprise standards. * Architect and implement integrations with third-party systems (eg, Active Directory, Orchestrators, Service Assurance tools). * Configure web services, APIs, and middleware for seamless data exchange.
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        Technical Design Authority

        DCV Technologies Limited
        Reading (RG1)
        From £30 to £50 per hour
        We are seeking an experienced Technical Design Authority (TDA) with strong expertise in BMC Helix and ITSM architecture to lead technical delivery across a major transformation programme. This role suits a hands-on architect with deep knowledge of Helix ITSM, Atrium CMDB, AR System, Digital Workplace, Smart IT, and complex integration environments. Key Responsibilities * Define, validate and govern BMC Helix architecture across ITSM, CMDB, Digital Workplace and Smart IT. * Design scalable, secure solutions using Helix Innovation Studio and Business Workflows. * Lead integrations with third-party platforms including Active Directory, orchestrators, discovery tools, APIs, web services and middleware. * Oversee CMDB reconciliation, data flows, auto-ticketing and identity management integrations.
        We are seeking an experienced Technical Design Authority (TDA) with strong expertise in BMC Helix and ITSM architecture to lead technical delivery across a major transformation programme. This role suits a hands-on architect with deep knowledge of Helix ITSM, Atrium CMDB, AR System, Digital Workplace, Smart IT, and complex integration environments. Key Responsibilities * Define, validate and govern BMC Helix architecture across ITSM, CMDB, Digital Workplace and Smart IT. * Design scalable, secure solutions using Helix Innovation Studio and Business Workflows. * Lead integrations with third-party platforms including Active Directory, orchestrators, discovery tools, APIs, web services and middleware. * Oversee CMDB reconciliation, data flows, auto-ticketing and identity management integrations.
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        FEATURED

        Applications Support Analyst / Engineer

        Kudos Partners
        Datchet Common, Slough (SL3), SL3
        £75,000 per annum plus 12% bonus - generous benefits package
        Location:West of London | Hybrid (1 day in office) Salary:Competitive + Benefits + Flexible Working Why Join? * Hybrid working only 1 day per week in the office * Established FinTech company with a collaborative, supportive culture * Key role in supporting high-profile web and mobileapplications(including BigCommerce) * Exposure to Azure, APIs, D365, and cutting-edge digital solutions Were seeking anexperiencedApplicationsSupport Analyst/Developerto join our growing FinTech team. Thisbusiness-criticalrole will lead the support for a new digital platform, ensuring smooth operation and exceptional service for internal stakeholders. * Deliver 2nd and 3rd line support for digitalapplications, resolving issues within SLAs * Minimise downtime and drive continuous improvement across web/mobile platforms
        Location:West of London | Hybrid (1 day in office) Salary:Competitive + Benefits + Flexible Working Why Join? * Hybrid working only 1 day per week in the office * Established FinTech company with a collaborative, supportive culture * Key role in supporting high-profile web and mobileapplications(including BigCommerce) * Exposure to Azure, APIs, D365, and cutting-edge digital solutions Were seeking anexperiencedApplicationsSupport Analyst/Developerto join our growing FinTech team. Thisbusiness-criticalrole will lead the support for a new digital platform, ensuring smooth operation and exceptional service for internal stakeholders. * Deliver 2nd and 3rd line support for digitalapplications, resolving issues within SLAs * Minimise downtime and drive continuous improvement across web/mobile platforms
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        What is the average salary for API in Buckinghamshire?

        Average salary per year
        £57,499

        The average salary for a API in Buckinghamshire is £57,499. API in Buckinghamshire salaries range from £47,499 to £68,124.

        Frequently Asked Questions

        How many contract API jobs are there in Buckinghamshire?
        There are 92 contract API jobs within 20 miles of Buckinghamshire available on Jobsite right now.

        What other similar jobs are there to contract API jobs in Buckinghamshire?
        As well as contract API jobs in Buckinghamshire, you can find contract IT, Software Development, Management, amongst many others.