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        54 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.
        more
        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
        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
        £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

        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.
        more
        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.
        more
        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
        more

        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.
        more

        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

        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.
        more
        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.
        more

        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.
        more
        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
        more
        Affinity Water is excited to be growing our Maximo Team, and we are looking for someone who is passionate, curious and ready to make an impact to join us as a Maximo Specialist on a 12 month fixed Term Contract. As a Maximo Specialist, you will be seen as one of the companys resident experts in how Maximo works. In conjunction with IT and business change teams you will be responsible for requirements definition, analysis, and design of Maximo enhancements, automation scripts and integrations. * ESRI GIS Mapping solution * Hi-Affinity CMS * Aurora Streetworks Management system * Waternet Leakage Monitoring system * Oracle Fusion Finance and Procurement system * FLS Visitour Scheduling There is an ambitious road map for the next few years which includes regulatory change, enhancements, small change, and an upgrade to MAS to name a few.
        Affinity Water is excited to be growing our Maximo Team, and we are looking for someone who is passionate, curious and ready to make an impact to join us as a Maximo Specialist on a 12 month fixed Term Contract. As a Maximo Specialist, you will be seen as one of the companys resident experts in how Maximo works. In conjunction with IT and business change teams you will be responsible for requirements definition, analysis, and design of Maximo enhancements, automation scripts and integrations. * ESRI GIS Mapping solution * Hi-Affinity CMS * Aurora Streetworks Management system * Waternet Leakage Monitoring system * Oracle Fusion Finance and Procurement system * FLS Visitour Scheduling There is an ambitious road map for the next few years which includes regulatory change, enhancements, small change, and an upgrade to MAS to name a few.
        more
        FEATURED

        Salesforce Tech Lead

        Stackstudio Digital Ltd.
        Windsor (SL4)
        From £450 to £475 per day
        Job Title:Salesforce Tech Lead Location:Windsor, UK (1 day a week) Job Purpose and Primary Objectives:Salesforce Tech Lead Key Responsibilities (Please specify if the position is an individual one or part of a team) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving.
        Job Title:Salesforce Tech Lead Location:Windsor, UK (1 day a week) Job Purpose and Primary Objectives:Salesforce Tech Lead Key Responsibilities (Please specify if the position is an individual one or part of a team) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving.
        more

        Oracle Consultant

        AVENSYS CONSULTING (UK) LTD
        Dunstable (LU5)
        From £70,000 to £75,000 per annum
        Job Title: Simphony Consultant Job Type: Fixed term contract for 6months Location: Dunstable, UK (Hybrid 2-3days/week) Salary: GBP 70-75K/Annum * Expertise on Oracle Simphony, API knowledge, Knowledge of Product Limitations * Ability to set up configuration * IT project experience * Business analysis skills * Testing Skills * Experience of Production Support * Any coding skill/ scripting skill is good to have * Roll out / Deploy experience.
        Job Title: Simphony Consultant Job Type: Fixed term contract for 6months Location: Dunstable, UK (Hybrid 2-3days/week) Salary: GBP 70-75K/Annum * Expertise on Oracle Simphony, API knowledge, Knowledge of Product Limitations * Ability to set up configuration * IT project experience * Business analysis skills * Testing Skills * Experience of Production Support * Any coding skill/ scripting skill is good to have * Roll out / Deploy experience.
        more
        Ready to Build the Future of AI with Us? Ready to help enterprises. At Neologik, we’re not just keeping up with the AI revolution - we’re fuelling it. We’re a high-velocity team on a mission to redefine how businesses think, build, and automate using artificial intelligence. Born in the cloud and powered by the latest Microsoft and Azure AI stack, Neologik is creating an intelligent automation platform that helps companies deploy smart agents, supercharge workflows, and innovate at scale. And here’s the best part: we’re just getting started. We’re looking for a Head of AI Software Development with a flair for AI to join the core team building the future of intelligent automation. If you thrive in fast-paced, idea-rich environments and love turning next-gen tech into real-world solutions - this is your moment. Ready to build the future with us?
        Ready to Build the Future of AI with Us? Ready to help enterprises. At Neologik, we’re not just keeping up with the AI revolution - we’re fuelling it. We’re a high-velocity team on a mission to redefine how businesses think, build, and automate using artificial intelligence. Born in the cloud and powered by the latest Microsoft and Azure AI stack, Neologik is creating an intelligent automation platform that helps companies deploy smart agents, supercharge workflows, and innovate at scale. And here’s the best part: we’re just getting started. We’re looking for a Head of AI Software Development with a flair for AI to join the core team building the future of intelligent automation. If you thrive in fast-paced, idea-rich environments and love turning next-gen tech into real-world solutions - this is your moment. Ready to build the future with us?
        more
        We are looking for a Senior Software Engineer to join our Group Technology team in Milton Keynes. In this role, you will help develop, support and enhance business systems and applications using .NET technologies and SQL Server. We offer a hybrid working arrangement with two days per week in our Milton Keynes office. * Be up to date regarding best practices in software development and deployment * Implement best practice coding in relation to development coding standards * Use operational data to improve the stability and performance of the applications * Maintain documentation and release notes * Have awareness of application security considerations * Identify dependencies across the organization and work with teams to resolve them before they become an issue, and install preventative measures to mitigate repeat occurrences
        We are looking for a Senior Software Engineer to join our Group Technology team in Milton Keynes. In this role, you will help develop, support and enhance business systems and applications using .NET technologies and SQL Server. We offer a hybrid working arrangement with two days per week in our Milton Keynes office. * Be up to date regarding best practices in software development and deployment * Implement best practice coding in relation to development coding standards * Use operational data to improve the stability and performance of the applications * Maintain documentation and release notes * Have awareness of application security considerations * Identify dependencies across the organization and work with teams to resolve them before they become an issue, and install preventative measures to mitigate repeat occurrences
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        Start Date: ASAP Contract Length: Until March 2026 (strong potential for extension) Day Rate: £450/day OUTSIDE IR35 Location: Hybrid 1 day per week onsite in Newbury Overview A major telecoms organisation is partnering with a global technology consultancy on a large-scale network transformation programme. They require an experienced Technical Author to review, update, and rewrite core network documentation that is currently outdated. This role is focused on bringing clarity, structure, and accuracy to critical technical documents, ensuring they reflect current technologies, designs, and operational needs. You will work closely with engineering and design teams to produce clear, logical, and well-organised documentation hosted within an online repository (e.g., Confluence). Key Responsibilities
        Start Date: ASAP Contract Length: Until March 2026 (strong potential for extension) Day Rate: £450/day OUTSIDE IR35 Location: Hybrid 1 day per week onsite in Newbury Overview A major telecoms organisation is partnering with a global technology consultancy on a large-scale network transformation programme. They require an experienced Technical Author to review, update, and rewrite core network documentation that is currently outdated. This role is focused on bringing clarity, structure, and accuracy to critical technical documents, ensuring they reflect current technologies, designs, and operational needs. You will work closely with engineering and design teams to produce clear, logical, and well-organised documentation hosted within an online repository (e.g., Confluence). Key Responsibilities
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        FEATURED

        Salesforce Solution Architect

        167 Solutions Ltd
        North West London (NW10)
        From £600 to £750 per day
        Global Organisation | Remote UK with occasional travel 12 Month Contract | Outside IR35 | Immediate Start Day Rate: £600-£750 167 Solutions is partnering with a global enterprise seeking an experienced Salesforce Solution Architect to lead the design, governance and optimisation of their Salesforce estate. This is a strategic contract assignment with a focus on stabilising the platform, reducing legacy technical debt and improving data quality across Sales Cloud and Service Cloud. Role Overview You will define and own end to end Salesforce solutions, provide architectural assurance and embed strong governance across the organisation. A key part of the role is supporting the development of a Salesforce Centre of Excellence, while addressing legacy debt, data duplication and long term scalability. Key Responsibilities
        Global Organisation | Remote UK with occasional travel 12 Month Contract | Outside IR35 | Immediate Start Day Rate: £600-£750 167 Solutions is partnering with a global enterprise seeking an experienced Salesforce Solution Architect to lead the design, governance and optimisation of their Salesforce estate. This is a strategic contract assignment with a focus on stabilising the platform, reducing legacy technical debt and improving data quality across Sales Cloud and Service Cloud. Role Overview You will define and own end to end Salesforce solutions, provide architectural assurance and embed strong governance across the organisation. A key part of the role is supporting the development of a Salesforce Centre of Excellence, while addressing legacy debt, data duplication and long term scalability. Key Responsibilities
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        TM Forum SOM Architect

        Stackstudio Digital Ltd.
        Windsor (SL4)
        From £425 to £450 per day
        Job Description Job Title:TM Forum SOM Architect Windsor, UKHybrid (visit to office once every week) Own the TMF-aligned SOM architecture across order capture, decomposition, orchestration, lifecycle, and fulfilment integration. Apply TMF 641/640/638 patterns consistently across all product lines. Maintain SOM architectural guardrails to ensure coherence across squads. Partner closely with the COM Lead and Salesforce Programme Architect to maintain COM SOM Fulfilment cohesion. Ensure SOM consumes COM outputs correctly, without premature assetisation or over-decomposition. Align EPC COM SOM Fulfilment flows to ensure consistent modelling. Define orchestration logic across multi-product, multi-step journeys. Design integrations with billing, CRM, field services, scheduling, inventory, and partners.
        Job Description Job Title:TM Forum SOM Architect Windsor, UKHybrid (visit to office once every week) Own the TMF-aligned SOM architecture across order capture, decomposition, orchestration, lifecycle, and fulfilment integration. Apply TMF 641/640/638 patterns consistently across all product lines. Maintain SOM architectural guardrails to ensure coherence across squads. Partner closely with the COM Lead and Salesforce Programme Architect to maintain COM SOM Fulfilment cohesion. Ensure SOM consumes COM outputs correctly, without premature assetisation or over-decomposition. Align EPC COM SOM Fulfilment flows to ensure consistent modelling. Define orchestration logic across multi-product, multi-step journeys. Design integrations with billing, CRM, field services, scheduling, inventory, and partners.
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        Senior .Net Integration Developer

        Rise Technical
        Maidenhead, Berkshire
        £50000.00 - £70000.00 per annum + + Training + Holiday
        Maidenhead - Hybrid (3 days on site & 2 from home) £50,000 - £70,000 + Holiday + Pension + Training + Private Health Plan Excellent opportunity for an experienced C# .NET looking to join a stock market listed business, renowned for their supportive culture and award-winning training opportunities. This company are a well-established, international, and industry-leading SaaS provider delivering innovative platform solutions to customers across the financial, telematics, and logistics sectors. They design, develop, and support secure and scalable systems that process high-value data for global partners. In this role you will own the development and maintenance of robust third-party integrations, helping to evolve the organisation's integration framework.
        Maidenhead - Hybrid (3 days on site & 2 from home) £50,000 - £70,000 + Holiday + Pension + Training + Private Health Plan Excellent opportunity for an experienced C# .NET looking to join a stock market listed business, renowned for their supportive culture and award-winning training opportunities. This company are a well-established, international, and industry-leading SaaS provider delivering innovative platform solutions to customers across the financial, telematics, and logistics sectors. They design, develop, and support secure and scalable systems that process high-value data for global partners. In this role you will own the development and maintenance of robust third-party integrations, helping to evolve the organisation's integration framework.
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        Senior .Net Integration Developer

        Rise Technical Recruitment Limited
        Maidenhead (SL6)
        £50000.00 - £70000.00 per annum + + Training + Holiday
        Maidenhead - Hybrid (3 days on site & 2 from home) £50,000 - £70,000 + Holiday + Pension + Training + Private Health Plan Excellent opportunity for an experienced C# .NET looking to join a stock market listed business, renowned for their supportive culture and award-winning training opportunities. This company are a well-established, international, and industry-leading SaaS provider delivering innovative platform solutions to customers across the financial, telematics, and logistics sectors. They design, develop, and support secure and scalable systems that process high-value data for global partners. In this role you will own the development and maintenance of robust third-party integrations, helping to evolve the organisation's integration framework.
        Maidenhead - Hybrid (3 days on site & 2 from home) £50,000 - £70,000 + Holiday + Pension + Training + Private Health Plan Excellent opportunity for an experienced C# .NET looking to join a stock market listed business, renowned for their supportive culture and award-winning training opportunities. This company are a well-established, international, and industry-leading SaaS provider delivering innovative platform solutions to customers across the financial, telematics, and logistics sectors. They design, develop, and support secure and scalable systems that process high-value data for global partners. In this role you will own the development and maintenance of robust third-party integrations, helping to evolve the organisation's integration framework.
        more
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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 54 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.