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        57 Contract API jobs in City of London + 20 miles

        Marketing Analytics and Data Engineering Lead

        Hertz Europe Ltd
        Uxbridge, London
        Competitive
        Design, build and govern marketing data foundation tagging, tracking, pipelines and modelling to create a single source of truth across brand direct, paid, social and CRM. Enable faster, better decisions with accurate data, integrated views (GA4, Salesforce, Databricks, COGNOS) and insight products (dashboards, attribution/MMM). Be the primary point of contact for all tracking and data issues ensuring reliability, compliance and speed. Own tagging and tracking standards for web/app (GTM, GA4, CM360/Floodlight, Meta pixel/event manager, consent mode) Define and maintain the marketing KPI dictionary and data model; steward the single source of truth Define data pipelines between martech platforms and enterprise solutions (Salesforce, COGNOS, Databricks) Set QA/alerting SLAs, prioritise analytics backlog
        Design, build and govern marketing data foundation tagging, tracking, pipelines and modelling to create a single source of truth across brand direct, paid, social and CRM. Enable faster, better decisions with accurate data, integrated views (GA4, Salesforce, Databricks, COGNOS) and insight products (dashboards, attribution/MMM). Be the primary point of contact for all tracking and data issues ensuring reliability, compliance and speed. Own tagging and tracking standards for web/app (GTM, GA4, CM360/Floodlight, Meta pixel/event manager, consent mode) Define and maintain the marketing KPI dictionary and data model; steward the single source of truth Define data pipelines between martech platforms and enterprise solutions (Salesforce, COGNOS, Databricks) Set QA/alerting SLAs, prioritise analytics backlog
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        With Intelligence is currently seeking a skilled Salesforce Senior Developer to join our in-house Enterprise Applications team. As a Salesforce developer, you will play a critical role in the design, development, and implementation of Salesforce solutions to meet With Intelligence's business needs. You will work with the other members of our Enterprise Applications team as well as directly with the Sales, Marketing and business teams, to build and improve our Salesforce CRM. This will involve improving development processes and engineering capability as we support the business, reduce friction, and enable growth in a dynamic and constantly changing environment. The With Intelligence Salesforce environment is a complex deployment with deep integrations into the business.
        With Intelligence is currently seeking a skilled Salesforce Senior Developer to join our in-house Enterprise Applications team. As a Salesforce developer, you will play a critical role in the design, development, and implementation of Salesforce solutions to meet With Intelligence's business needs. You will work with the other members of our Enterprise Applications team as well as directly with the Sales, Marketing and business teams, to build and improve our Salesforce CRM. This will involve improving development processes and engineering capability as we support the business, reduce friction, and enable growth in a dynamic and constantly changing environment. The With Intelligence Salesforce environment is a complex deployment with deep integrations into the business.
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        In this role you will lead our technology strategy and ensure our systems evolve in step with our ambition, driving digital transformation across our national network of veterinary clinics and the teams and systems that support them. Youll be responsible for defining and leading Medivets enterprise architecture strategy. Youll work closely with senior stakeholders across the business and IT to ensure our technology landscape is scalable, secure, and aligned with our long-term goals. * Developing and maintaining our enterprise architecture framework, principles, and standards * Leading architecture governance forums and ensuring compliance across systems and platforms * Partnering with business leaders to shape technology roadmaps that support innovation and growth
        In this role you will lead our technology strategy and ensure our systems evolve in step with our ambition, driving digital transformation across our national network of veterinary clinics and the teams and systems that support them. Youll be responsible for defining and leading Medivets enterprise architecture strategy. Youll work closely with senior stakeholders across the business and IT to ensure our technology landscape is scalable, secure, and aligned with our long-term goals. * Developing and maintaining our enterprise architecture framework, principles, and standards * Leading architecture governance forums and ensuring compliance across systems and platforms * Partnering with business leaders to shape technology roadmaps that support innovation and growth
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        About RedCloud The global supply chain is brokencreating a $2 trillion inventory gap where essential consumer goods fail to reach the people who need them. Brands miss sales, distributors mismanage stock, and retailers face empty shelves. The result? Higher prices, slower growth, and lost opportunity across the board. RedCloud is fixing this. Our RedAI digital trading platform, bulk and retail trading exchanges connect key parts of the supply chainenabling bulk inventory exchange, streamlined digital payments, and generating vast quantities of aggregated market data. By applying AI and machine learning techniques, we deliver predictive market insight and trading recommendations straight back to the trading environmentfacilitating smarter everyday business decisions for our customers, from factory to warehouse to store.
        About RedCloud The global supply chain is brokencreating a $2 trillion inventory gap where essential consumer goods fail to reach the people who need them. Brands miss sales, distributors mismanage stock, and retailers face empty shelves. The result? Higher prices, slower growth, and lost opportunity across the board. RedCloud is fixing this. Our RedAI digital trading platform, bulk and retail trading exchanges connect key parts of the supply chainenabling bulk inventory exchange, streamlined digital payments, and generating vast quantities of aggregated market data. By applying AI and machine learning techniques, we deliver predictive market insight and trading recommendations straight back to the trading environmentfacilitating smarter everyday business decisions for our customers, from factory to warehouse to store.
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        Investec is a distinctive Specialist Bank serving clients principally in the UK and South Africa. Our culture gives us our edge: we work hard to find colleagues who'll think out of the ordinary and we put them in environments where they'll flourish. We combine a flat structure with a focus on internal mobility. If you can bring an entrepreneurial spirit and a desire to learn and collaborate to your work, this could be the boost your career deserves. Overview: The Private Client Lending Technology team is delivering IMPACT, a digitally enabled, end-to-end Mortgage Origination Platform for high-net-worth clients. We're seeking a Senior Business Analyst with proven system rollout experience, capable of thriving in a modern AI-accelerated delivery environment. It would be desirable to have mortgages or lending experience, though not essential.
        Investec is a distinctive Specialist Bank serving clients principally in the UK and South Africa. Our culture gives us our edge: we work hard to find colleagues who'll think out of the ordinary and we put them in environments where they'll flourish. We combine a flat structure with a focus on internal mobility. If you can bring an entrepreneurial spirit and a desire to learn and collaborate to your work, this could be the boost your career deserves. Overview: The Private Client Lending Technology team is delivering IMPACT, a digitally enabled, end-to-end Mortgage Origination Platform for high-net-worth clients. We're seeking a Senior Business Analyst with proven system rollout experience, capable of thriving in a modern AI-accelerated delivery environment. It would be desirable to have mortgages or lending experience, though not essential.
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        Full time Experienced (relevant combo of work and education) Associate's Degree EPC Technical Pre-Sales Overview The EPC Technical Pre-Sales professional acts as a crucial bridge between sales and technical teams, providing both functional and technical expertise across all facets of EPC solutions. This role is responsible for engaging with customers, delivering technical presentations, supporting sales cycles, and ensuring solutions are tailored to client needs. Key Responsibilities * Customer Engagement o Interact with existing and prospective clients to understand their requirements and demonstrate how EPC solutions address their needs. o Identify areas of concern or misalignment and provide clear, timely responses to client queries. o Gather and analyse information to develop a comprehensive understanding of customer technology infrastructures.
        Full time Experienced (relevant combo of work and education) Associate's Degree EPC Technical Pre-Sales Overview The EPC Technical Pre-Sales professional acts as a crucial bridge between sales and technical teams, providing both functional and technical expertise across all facets of EPC solutions. This role is responsible for engaging with customers, delivering technical presentations, supporting sales cycles, and ensuring solutions are tailored to client needs. Key Responsibilities * Customer Engagement o Interact with existing and prospective clients to understand their requirements and demonstrate how EPC solutions address their needs. o Identify areas of concern or misalignment and provide clear, timely responses to client queries. o Gather and analyse information to develop a comprehensive understanding of customer technology infrastructures.
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        Cloud Principal Architect

        Janus Henderson Investors
        City of London, London
        Competitive
        Why work for us? A career at Janus Henderson is more than a job, its about investing in a brighter future together. Our Mission at Janus Henderson is to help clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class service. We will do this by protecting and growing our core business, amplifying our strengths and diversifying where we have the right. Clients Come First - Always | Execution Supersedes Intention | Together We Win | Diversity Improves Results | Truth Builds Trust If our mission, values, and purpose align with your own, we would love to hear from you! Your opportunity The Principal Architect Cloud is a senior technical leader responsible for designing and guiding enterprise cloud architecture across Microsoft Azure as a key member of Infrastructure Architecture team.
        Why work for us? A career at Janus Henderson is more than a job, its about investing in a brighter future together. Our Mission at Janus Henderson is to help clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class service. We will do this by protecting and growing our core business, amplifying our strengths and diversifying where we have the right. Clients Come First - Always | Execution Supersedes Intention | Together We Win | Diversity Improves Results | Truth Builds Trust If our mission, values, and purpose align with your own, we would love to hear from you! Your opportunity The Principal Architect Cloud is a senior technical leader responsible for designing and guiding enterprise cloud architecture across Microsoft Azure as a key member of Infrastructure Architecture team.
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        424 exact matches jobs are outside your preferred location

        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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        Job Title: Lead Software Developer Location: London, 1-2 days every 2 weeks Duration: until 2-Jan-27 Rate: £400-450 per day - umbrella only * API Development: Design, develop, and maintain robust, scalable APIs using modern frameworks and technologies. * Azure Logic Apps: Configure and integrate Azure Logic Apps to enable seamless workflows and business process automation. * Proficiency Coding Languages JSON, JavaScript, PowerShell & C# * Azure Security: Implement and adhere to best practices in Azure security, including identity management, access control, and threat protection. * Front-End Development: Build responsive and user-friendly front-end interfaces using frameworks such as React, Angular, or Vue.js. * Back-End Development: Develop and maintain server-side logic with programming languages like .NET, Node.js, or Python.
        Job Title: Lead Software Developer Location: London, 1-2 days every 2 weeks Duration: until 2-Jan-27 Rate: £400-450 per day - umbrella only * API Development: Design, develop, and maintain robust, scalable APIs using modern frameworks and technologies. * Azure Logic Apps: Configure and integrate Azure Logic Apps to enable seamless workflows and business process automation. * Proficiency Coding Languages JSON, JavaScript, PowerShell & C# * Azure Security: Implement and adhere to best practices in Azure security, including identity management, access control, and threat protection. * Front-End Development: Build responsive and user-friendly front-end interfaces using frameworks such as React, Angular, or Vue.js. * Back-End Development: Develop and maintain server-side logic with programming languages like .NET, Node.js, or Python.
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        NEWFEATURED
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
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        FEATURED
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
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        FEATURED

        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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        Senior Python Software Developer (SC Cleared) Duration: 12 Months Location: London & remote (hybrid) Rate: £650 per day IR35 Status: Inside Start: ASAP A Senior Python Software Developer (SC Cleared) is required for our government client, where you will be working on a specific project where they are transforming and redesigning their data hub, which provides access to a variety of public sector data. We require an experienced full stack developer with extensive Python experience. You will have previous experience developing across a number of services on the front end and back end including Web Services. Proficient in creating good and well documented code and take ownership of the development process. Also to work well with UCD (user centre design) teams and other technical experts on their side.
        Senior Python Software Developer (SC Cleared) Duration: 12 Months Location: London & remote (hybrid) Rate: £650 per day IR35 Status: Inside Start: ASAP A Senior Python Software Developer (SC Cleared) is required for our government client, where you will be working on a specific project where they are transforming and redesigning their data hub, which provides access to a variety of public sector data. We require an experienced full stack developer with extensive Python experience. You will have previous experience developing across a number of services on the front end and back end including Web Services. Proficient in creating good and well documented code and take ownership of the development process. Also to work well with UCD (user centre design) teams and other technical experts on their side.
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        Rate - £600 - 650 Inside IR35 Duration - 6 months Location - Canary Wharf - twice a week on site A client of ours is going through a major IT modernisation. The ongoing programmes of work include improvements to business processes, generating staff capacity creation, IT transformation and embedding agile delivery methodologies. A key strategic focus of the IT modernisation is to replace outdated technology and introduce new technology in the Treasury and Operations capability. * Work with their IT Architecture Team aligned to an IT Delivery Capability that delivers the transformation agenda and outcomes across multiple projects within the Treasury, Risk and Finance delivery capability. Participate in workshops, providing quality assurance and gathering requirements to shape project deliverables.
        Rate - £600 - 650 Inside IR35 Duration - 6 months Location - Canary Wharf - twice a week on site A client of ours is going through a major IT modernisation. The ongoing programmes of work include improvements to business processes, generating staff capacity creation, IT transformation and embedding agile delivery methodologies. A key strategic focus of the IT modernisation is to replace outdated technology and introduce new technology in the Treasury and Operations capability. * Work with their IT Architecture Team aligned to an IT Delivery Capability that delivers the transformation agenda and outcomes across multiple projects within the Treasury, Risk and Finance delivery capability. Participate in workshops, providing quality assurance and gathering requirements to shape project deliverables.
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        FEATURED
        10+ years in enterprise engineering, ideally in AI-driven environments. Expertise in a range of programming languages, tools, and technologies. Hands-on experience with cloud platforms (AWS preferred). Strong knowledge of API integration. Track record of delivering high-value products in large, complex organizations, ideally FTSE100 Group enterprises or similar Proven experience in developing, testing, and deploying data 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. Initial co-location with BA teams in London is essential to ensure close collaboration.
        10+ years in enterprise engineering, ideally in AI-driven environments. Expertise in a range of programming languages, tools, and technologies. Hands-on experience with cloud platforms (AWS preferred). Strong knowledge of API integration. Track record of delivering high-value products in large, complex organizations, ideally FTSE100 Group enterprises or similar Proven experience in developing, testing, and deploying data 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. Initial co-location with BA teams in London is essential to ensure close collaboration.
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        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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        Greetings We are Hiring . Onsite: 3 days per week at Waterside office. Travel: EU travel (Barcelona/Madrid) approximately once in 3/4 weeks Contract 6 Months Role Purpose The Frontend Engineer will design and build enterprise-grade visualisations that deliver actionable insights at speed for British Airways initially, whilst ensuring frameworks can scale across all OpCos. This role demands consultancy-level frontend engineering expertise and the ability to balance velocity with strong engineering standards and discipline. Key Responsibilities Rapid prototyping: Deliver initial dashboards and visualisations in Tableau to meet urgent business needs Robust engineering: Architect and build production-grade, reusable dashboard solutions using modern frontend technologies, integrating with enterprise APIs and data sources
        Greetings We are Hiring . Onsite: 3 days per week at Waterside office. Travel: EU travel (Barcelona/Madrid) approximately once in 3/4 weeks Contract 6 Months Role Purpose The Frontend Engineer will design and build enterprise-grade visualisations that deliver actionable insights at speed for British Airways initially, whilst ensuring frameworks can scale across all OpCos. This role demands consultancy-level frontend engineering expertise and the ability to balance velocity with strong engineering standards and discipline. Key Responsibilities Rapid prototyping: Deliver initial dashboards and visualisations in Tableau to meet urgent business needs Robust engineering: Architect and build production-grade, reusable dashboard solutions using modern frontend technologies, integrating with enterprise APIs and data sources
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        Contract DevOps Engineers (x5) - SC Cleared Location: Remote (occasional London travel - max 1 day/week) Rate: Up to £475/day Duration: 6 months (likely extension) IR35: Inside Clearance: SC Cleared required Deadline for CV submission: Monday 15th We're looking for five experienced DevOps Engineers to join a major transformation project. These roles are AWS-heavy and require a solid development background. You don't need to be a superstar-just strong, reliable, and experienced in the right tech stack. Tech Stack * Cloud: AWS * Messaging: Kafka * Languages: Java, NodeJS * Frameworks: Spring Boot/Data, React * Containers: Docker, Kubernetes, Helm * Frontend: Typescript / JavaScript * Databases: Postgres * Search: OpenSearch / ElasticSearch * Testing: Playwright, Wiremock * Monitoring: Grafana, Prometheus, Dynatrace * Version Control: Git * APIs: REST API
        Contract DevOps Engineers (x5) - SC Cleared Location: Remote (occasional London travel - max 1 day/week) Rate: Up to £475/day Duration: 6 months (likely extension) IR35: Inside Clearance: SC Cleared required Deadline for CV submission: Monday 15th We're looking for five experienced DevOps Engineers to join a major transformation project. These roles are AWS-heavy and require a solid development background. You don't need to be a superstar-just strong, reliable, and experienced in the right tech stack. Tech Stack * Cloud: AWS * Messaging: Kafka * Languages: Java, NodeJS * Frameworks: Spring Boot/Data, React * Containers: Docker, Kubernetes, Helm * Frontend: Typescript / JavaScript * Databases: Postgres * Search: OpenSearch / ElasticSearch * Testing: Playwright, Wiremock * Monitoring: Grafana, Prometheus, Dynatrace * Version Control: Git * APIs: REST API
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        FEATURED
        Day Rate: Circa £500 per day (Outside IR35) Location: Hybrid/London Contract: Initial 3 month contract About the Role A major UK public sector organisation is seeking an experienced Technical Business Analyst to support a high-profile digital transformation programme delivering fixed outcomes to challenging timelines. This role is ideal for a detail-driven analyst with strong technical capability, excellent stakeholder management, and a passion for data-led problem-solving. Key Responsibilities * Gather, validate, and document detailed business and technical requirements * Translate business objectives into technical specifications aligned with fixed deliverables and fixed outcomes * Conduct in-depth analysis of existing systems, data flows, integrations, and processes * Work closely with engineering, product, architecture, and delivery teams to shape solution options
        Day Rate: Circa £500 per day (Outside IR35) Location: Hybrid/London Contract: Initial 3 month contract About the Role A major UK public sector organisation is seeking an experienced Technical Business Analyst to support a high-profile digital transformation programme delivering fixed outcomes to challenging timelines. This role is ideal for a detail-driven analyst with strong technical capability, excellent stakeholder management, and a passion for data-led problem-solving. Key Responsibilities * Gather, validate, and document detailed business and technical requirements * Translate business objectives into technical specifications aligned with fixed deliverables and fixed outcomes * Conduct in-depth analysis of existing systems, data flows, integrations, and processes * Work closely with engineering, product, architecture, and delivery teams to shape solution options
        more
        FEATURED

        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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        Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secure as AI transforms how software is built. Our AI-native Developer Security Platform integrates seamlessly into development and security workflows, making it easy to find, fix, and prevent vulnerabilities from code and dependencies to containers and cloud. Our mission is to empower every developer to innovate securely in the AI era boosting productivity while reducing business risk. Were not your average security company - we build Snyk on One Team, Care Deeply, Customer Centric, and Forward Thinking. Its how we stay driven, supportive, and always one step ahead as AI reshapes our world. Our Opportunity As a Senior Software Engineer, youll play a key role in shaping how modern organizations build and secure software at scale.
        Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secure as AI transforms how software is built. Our AI-native Developer Security Platform integrates seamlessly into development and security workflows, making it easy to find, fix, and prevent vulnerabilities from code and dependencies to containers and cloud. Our mission is to empower every developer to innovate securely in the AI era boosting productivity while reducing business risk. Were not your average security company - we build Snyk on One Team, Care Deeply, Customer Centric, and Forward Thinking. Its how we stay driven, supportive, and always one step ahead as AI reshapes our world. Our Opportunity As a Senior Software Engineer, youll play a key role in shaping how modern organizations build and secure software at scale.
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        NEW
        Location: London 2x a week Contract: 3 months Rate: Competitive market rate, Outside IR35 This is an excellent opportunity for an experienced ColdFusion Developer to join a leading global business that support major brands. * Develop, maintain, and optimise ColdFusion/CFML applications across customer-facing and internal platforms. * Build and consume RESTful APIs to integrate with new services and modern architecture components. * Collaborate with product, engineering, and QA teams to deliver secure, scalable solutions. * Support the migration and refactoring of legacy ColdFusion code to modern development standards. * Troubleshoot performance issues, implement fixes, and ensure best practices in coding and testing. * Contribute to documentation, code reviews, and continuous improvement initiatives.
        Location: London 2x a week Contract: 3 months Rate: Competitive market rate, Outside IR35 This is an excellent opportunity for an experienced ColdFusion Developer to join a leading global business that support major brands. * Develop, maintain, and optimise ColdFusion/CFML applications across customer-facing and internal platforms. * Build and consume RESTful APIs to integrate with new services and modern architecture components. * Collaborate with product, engineering, and QA teams to deliver secure, scalable solutions. * Support the migration and refactoring of legacy ColdFusion code to modern development standards. * Troubleshoot performance issues, implement fixes, and ensure best practices in coding and testing. * Contribute to documentation, code reviews, and continuous improvement initiatives.
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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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        Flexible Pipe Engineer

        First Technical Recruitment
        Basingstoke, Hampshire
        Market related
        Senior Flexible Pipe Engineer UK – Basingstoke (Hybrid Working) Worker Status: PAYE Only Contract Duration: Minimum 12 Months SmartWorking (Hybrid Working) The company supports flexible working through its SmartWorking policy. Personnel may work up to 12 working days per month from home (or another secure UK location). These days remain available even during months where leave is taken—typically offering employees the opportunity for approximately 60% remote working. The Role: Senior Engineer, Flexible Pipe We are seeking a highly capable Senior Flexible Pipe Engineer to support Eni’s global offshore deepwater projects. Based within the engineering group in Basingstoke, you will deliver specialist engineering expertise across all project phases—from feasibility studies and concept development through FEED, tendering, and execution.
        Senior Flexible Pipe Engineer UK – Basingstoke (Hybrid Working) Worker Status: PAYE Only Contract Duration: Minimum 12 Months SmartWorking (Hybrid Working) The company supports flexible working through its SmartWorking policy. Personnel may work up to 12 working days per month from home (or another secure UK location). These days remain available even during months where leave is taken—typically offering employees the opportunity for approximately 60% remote working. The Role: Senior Engineer, Flexible Pipe We are seeking a highly capable Senior Flexible Pipe Engineer to support Eni’s global offshore deepwater projects. Based within the engineering group in Basingstoke, you will deliver specialist engineering expertise across all project phases—from feasibility studies and concept development through FEED, tendering, and execution.
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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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        What is the average salary for API in City of London?

        Average salary per year
        £82,499

        The average salary for a API in City of London is £82,499. API in City of London salaries range from £64,999 to £92,499.

        Frequently Asked Questions

        How many contract API jobs are there in City of London?
        There are 57 contract API jobs within 20 miles of City of London available on Jobsite right now.

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