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- The City, City (EC3)
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21 Contract API jobs in South Farnborough + 20 miles
303 exact matches jobs are outside your preferred location
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We are seeking an experienced Java API Developer to join our Digital Asset development team. This is a hands-on engineering role responsible for building and operating secure, resilient API services that power institutional digital asset capabilitiesspanning digital custody, tokenization enablement, digital transfer agency, and digital cash/settlement workflows. * Build API services that participate in the platforms centralized integration approachsupporting client/app onboarding and app-to-service integrations via an Integration Hub and secure gateways. * Implement APIs that align to enterprise API design/security/publishing requirements, ensuring designs are review-ready and compliant with internal standards (security, documentation, and platform requirements). * Collaborate across teams to drive clear API contracts and dependencies for integrations to traditional ...
We are seeking an experienced Java API Developer to join our Digital Asset development team. This is a hands-on engineering role responsible for building and operating secure, resilient API services that power institutional digital asset capabilitiesspanning digital custody, tokenization enablement, digital transfer agency, and digital cash/settlement workflows. * Build API services that participate in the platforms centralized integration approachsupporting client/app onboarding and app-to-service integrations via an Integration Hub and secure gateways. * Implement APIs that align to enterprise API design/security/publishing requirements, ensuring designs are review-ready and compliant with internal standards (security, documentation, and platform requirements). * Collaborate across teams to drive clear API contracts and dependencies for integrations to traditional ...
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Workplace Platform Engineer (DocuSign & 365 & API)
Workplace Platform Engineer (DocuSign & 365 & API)
Morson Edge
City of London, London, EC1A 1AA
Market related
We are seeking a Platform Engineer to join the Modern Workplace team at a leading banking client. This team is focused on delivering a flexible, efficient, and seamless digital workplace experience, enabling colleagues to collaborate and perform effectively using enterprise tools such as Microsoft 365 and DocuSign. The successful candidate will be a key contributor to the Productivity Applications portfolio, responsible for configuring, maintaining, and enhancing platforms that support a high-performing digital workplace. Key Responsibilities * Configure, develop, and maintain solutions across the Productivity Applications platform * Contribute to the design and implementation of new digital workplace capabilities * Manage the end-to-end lifecycle of platform solutions, ensuring continuous improvement * Support business-as-usual changes and incremental enhancements
We are seeking a Platform Engineer to join the Modern Workplace team at a leading banking client. This team is focused on delivering a flexible, efficient, and seamless digital workplace experience, enabling colleagues to collaborate and perform effectively using enterprise tools such as Microsoft 365 and DocuSign. The successful candidate will be a key contributor to the Productivity Applications portfolio, responsible for configuring, maintaining, and enhancing platforms that support a high-performing digital workplace. Key Responsibilities * Configure, develop, and maintain solutions across the Productivity Applications platform * Contribute to the design and implementation of new digital workplace capabilities * Manage the end-to-end lifecycle of platform solutions, ensuring continuous improvement * Support business-as-usual changes and incremental enhancements
PREMIUM
Python AI Engineer - PropTech - London (onsite)
Python AI Engineer - PropTech - London (onsite)
Transparent Technology
London
£71000 - £130000 per annum + bens + equity
Lead Python Engineer | AI, Python, FastAPI, Django, Microservices, APIs, Cloud | London | up to £130k + Equity - Build AI-powered systems that automate real-world workflows at scale. This is an opportunity to join a fast-growing AI startup building an AI-driven platform automating up to 80% of property management workflows, transforming how compliance, maintenance, and tenant communication are handled across the UK property sector. As a Lead Python Engineer, you'll design and build scalable backend systems, APIs, and AI-driven applications, working at the intersection of software engineering, automation, and AI integration. You'll play a key role in developing systems that directly impact end users, while helping shape engineering practices and mentoring other developers in a high-growth environment.
Lead Python Engineer | AI, Python, FastAPI, Django, Microservices, APIs, Cloud | London | up to £130k + Equity - Build AI-powered systems that automate real-world workflows at scale. This is an opportunity to join a fast-growing AI startup building an AI-driven platform automating up to 80% of property management workflows, transforming how compliance, maintenance, and tenant communication are handled across the UK property sector. As a Lead Python Engineer, you'll design and build scalable backend systems, APIs, and AI-driven applications, working at the intersection of software engineering, automation, and AI integration. You'll play a key role in developing systems that directly impact end users, while helping shape engineering practices and mentoring other developers in a high-growth environment.
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Senior Data Scientist - 12 Month FTC
Senior Data Scientist - 12 Month FTC
Vitality Corporate Services Limited
Charing Cross, Central London (WC2), WC2R
£Competitive + Bonus + Benefits
Strong understanding of API development, microservices, and containerization (Docker, Kubernetes)
Strong understanding of API development, microservices, and containerization (Docker, Kubernetes)
PREMIUM
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Principal Software Engineer
Principal Software Engineer
Spectrum It Recruitment Limited
Southampton (SO14)
£70000.00 - £75000.00 per annum
Southampton (Onsite) * £75,000 + generous pension & benefits - Are you a Principal Engineer who thrives on solving real-world problems with cutting-edge technology? This is an opportunity to join a talented engineering team building advanced, real-time software systems used in safety-critical environments worldwide. You'll be working at the intersection of enterprise software, IoT, and data-driven decision-making; developing solutions that genuinely make a difference. Why this role is exciting - This isn't just another enterprise software role. You'll be working on a sophisticated platform that connects physical devices (IoT) with real-time data processing, delivering actionable insights through modern web applications. The systems you help build are deployed globally and play a vital role in protecting people, infrastructure, and national security.
Southampton (Onsite) * £75,000 + generous pension & benefits - Are you a Principal Engineer who thrives on solving real-world problems with cutting-edge technology? This is an opportunity to join a talented engineering team building advanced, real-time software systems used in safety-critical environments worldwide. You'll be working at the intersection of enterprise software, IoT, and data-driven decision-making; developing solutions that genuinely make a difference. Why this role is exciting - This isn't just another enterprise software role. You'll be working on a sophisticated platform that connects physical devices (IoT) with real-time data processing, delivering actionable insights through modern web applications. The systems you help build are deployed globally and play a vital role in protecting people, infrastructure, and national security.
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Hands-on experience with Azure ecosystem, specifically in architecting and deploying Azure App Services, Azure SQL Database, Azure Functions, and managing cloud infrastructure including Virtual Networks (VNet), API Management (APIM), and Azure Storage solutions. * Experienced in RESTful API design and integration; experience with SOAP WebServices and XML/XPath.
Hands-on experience with Azure ecosystem, specifically in architecting and deploying Azure App Services, Azure SQL Database, Azure Functions, and managing cloud infrastructure including Virtual Networks (VNet), API Management (APIM), and Azure Storage solutions. * Experienced in RESTful API design and integration; experience with SOAP WebServices and XML/XPath.
NEW
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Contract .Net Developer – Insurance claims system
Contract .Net Developer – Insurance claims system
Hireful
Central London, London
£400 per day outside IR35
We’re looking for a proactive, self-sufficient developer with strong experience in .NET, API development, microservices architecture, and database integration.
We’re looking for a proactive, self-sufficient developer with strong experience in .NET, API development, microservices architecture, and database integration.
NEWFEATURED
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Solutions Architect
Solutions Architect
MARSH CORPORATE SERVICES LIMITED
City of London (EC1)
Pension, Healthcare, Life Insurance and much more
Deep fluency in London Market placing platforms and integration patterns (Whitespace, PPL, API ecosystem).
Deep fluency in London Market placing platforms and integration patterns (Whitespace, PPL, API ecosystem).
PREMIUM
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Solutions Architect
Solutions Architect
Solus Accident Repair Centres
North London, London
GBP £50,000.00/Yr. - GBP £65,000.00/Yr.
Deep knowledge of modern enterprise patterns, SaaS adoption, API and event based integrations and resilience approaches.
Deep knowledge of modern enterprise patterns, SaaS adoption, API and event based integrations and resilience approaches.
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Designing, building, testing, and deploying integration flows using SAP Integration Suite, with a focus on Cloud Integration (CPI), API Management, and Event Mesh. * Proven experience in designing and deploying integration flows within SAP BTP, especially CPI, API Management, and Event Mesh.
Designing, building, testing, and deploying integration flows using SAP Integration Suite, with a focus on Cloud Integration (CPI), API Management, and Event Mesh. * Proven experience in designing and deploying integration flows within SAP BTP, especially CPI, API Management, and Event Mesh.
FEATURED
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Build API and integration layers enabling two-way communication * Define and implement structured data input/output flows, replacing a manual Excel-based trigger with a proper API-driven process
Build API and integration layers enabling two-way communication * Define and implement structured data input/output flows, replacing a manual Excel-based trigger with a proper API-driven process
NEWFEATURED
Full Stack Engineer - Equity
Full Stack Engineer - Equity
Dental startup
Central London (W1)
Up to £60,000 per annum Equity - Founding Engineer
You'll own the full stack database architecture, API layer, and front-end, and you'll work directly with the founder on every major decision. * Architect and build the core platform from scratch schema, API, and front-end * Strong Node.js REST API development, authentication, middleware * Third-party API and webhook integration experience
You'll own the full stack database architecture, API layer, and front-end, and you'll work directly with the founder on every major decision. * Architect and build the core platform from scratch schema, API, and front-end * Strong Node.js REST API development, authentication, middleware * Third-party API and webhook integration experience
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Full-Stack Web Software Engineer - React, ASP.NET & C#
Full-Stack Web Software Engineer - React, ASP.NET & C#
Computer Futures
Portsmouth, Hampshire, BBTE
£68000 - £87000 per annum + bonus
Working across the full stack, contributing to both UI and API development
Working across the full stack, contributing to both UI and API development
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Strong technical depth across Adobe Customer Experience Orchestration and Creativity & Productivity solutions, plus broad knowledge of cloud architectures, API integrations, data platforms, and third-party ecosystem technologies
Strong technical depth across Adobe Customer Experience Orchestration and Creativity & Productivity solutions, plus broad knowledge of cloud architectures, API integrations, data platforms, and third-party ecosystem technologies
Develop and maintain Python code for data processing, API development, and integration with the Azure Databricks environment.
Develop and maintain Python code for data processing, API development, and integration with the Azure Databricks environment.
FEATURED
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AboutTheRole - WerelookingformultipleLeadTechnicalArchitectswhowillplayacentralroleinthesuccessfuldeliveryoftechnologyprojects. Youwillworkcloselywithclientsandinternalteamstounderstandcontext,co-designsolutions,andleadtechnicalteamsthroughproductdevelopment. Inthisrole,youwillleadarchitectureworkonclientprogrammes. Youwilldesignandoverseeend-to-endtechnologysolutionsthatarescalable,secure,user-centred,andethicallyresponsible. Thisroleinvolvestranslatingbusinessneedsintotechnologysolutions,creatingarchitectureartefacts,andsupportingclientstomakesustainableanduser-focusedtechnologychoices. Youmightbeaspecialistinaparticulartechnologydomainorplatform-suchaslegacysystemmigration,m365,Azure,GCP,AWS,dataplatformsorintelligentprocessautomation-butyouwillapplyatechnologyagnosticperspective. You'lloperateasatrustedadvisor,oftenleadingsmallerengagementsorplayingaseniorroleonlargerones,butmayalsoworksoloorcontributeasamemberofateamasneeded.
AboutTheRole - WerelookingformultipleLeadTechnicalArchitectswhowillplayacentralroleinthesuccessfuldeliveryoftechnologyprojects. Youwillworkcloselywithclientsandinternalteamstounderstandcontext,co-designsolutions,andleadtechnicalteamsthroughproductdevelopment. Inthisrole,youwillleadarchitectureworkonclientprogrammes. Youwilldesignandoverseeend-to-endtechnologysolutionsthatarescalable,secure,user-centred,andethicallyresponsible. Thisroleinvolvestranslatingbusinessneedsintotechnologysolutions,creatingarchitectureartefacts,andsupportingclientstomakesustainableanduser-focusedtechnologychoices. Youmightbeaspecialistinaparticulartechnologydomainorplatform-suchaslegacysystemmigration,m365,Azure,GCP,AWS,dataplatformsorintelligentprocessautomation-butyouwillapplyatechnologyagnosticperspective. You'lloperateasatrustedadvisor,oftenleadingsmallerengagementsorplayingaseniorroleonlargerones,butmayalsoworksoloorcontributeasamemberofateamasneeded.
PREMIUM
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SC Java Developer
SC Java Developer
Sanderson Government and Defence
South East London (SE1), SE1
£40000 - £60000 per annum
Expect to contribute to API development, containerised applications, and cross-functional engineering initiatives.
Expect to contribute to API development, containerised applications, and cross-functional engineering initiatives.
NEWFEATURED
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You will work across modern cloud-native architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. * Develop cloud-native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others. * Hands-on experience with AWS cloud services (Lambda, API Gateway, DynamoDB, ECS, S3, etc.). * Solid understanding of RESTful API design and exposure to GraphQL.
You will work across modern cloud-native architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. * Develop cloud-native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others. * Hands-on experience with AWS cloud services (Lambda, API Gateway, DynamoDB, ECS, S3, etc.). * Solid understanding of RESTful API design and exposure to GraphQL.
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Lead Integration Architect - 12 Months Contract Outside IR35 £600 to £650 a day - 3 days a week in Dartford Kent - A global powerhouse in the Infrastructure and Built Environment sector is urgently seeking a visionary Integration Architect to spearhead the connectivity for a multi-million-pound Digital Manufacturing Cloud (DMC) transformation. This isn't a maintenance role. You will own the entire integration architecture, acting as the master orchestrator for a complex ecosystem. You will ensure that high-level ERP and HR systems communicate perfectly with the precision-engineered data flows of PLM, MES, and QMS platforms. As an integration Architect you will have the following responsibilities * Define the integration architecture that allows disparate enterprise systems to speak a single, fluent language.
Lead Integration Architect - 12 Months Contract Outside IR35 £600 to £650 a day - 3 days a week in Dartford Kent - A global powerhouse in the Infrastructure and Built Environment sector is urgently seeking a visionary Integration Architect to spearhead the connectivity for a multi-million-pound Digital Manufacturing Cloud (DMC) transformation. This isn't a maintenance role. You will own the entire integration architecture, acting as the master orchestrator for a complex ecosystem. You will ensure that high-level ERP and HR systems communicate perfectly with the precision-engineered data flows of PLM, MES, and QMS platforms. As an integration Architect you will have the following responsibilities * Define the integration architecture that allows disparate enterprise systems to speak a single, fluent language.
FEATURED
Senior Solution Architect (Microsoft) Location: London (Hybrid working available after probation) About the Role - An exciting opportunity has arisen for a Senior Solution Architect (Microsoft) to join a leading Energy Business undergoing significant digital transformation. Reporting to the Architecture Manager and based in London, you will play a key role in shaping and delivering enterprise-wide technology solutions. This position is central to advancing the organisation’s cloud-first strategy, enhancing its Azure, Microsoft 365, and Power Platform estate, and driving the transition towards modern, scalable, and innovative architectures. You will be instrumental in defining both current and future state architectures, enabling business transformation, improving customer experience, and supporting long-term digitalisation goals. Key Responsibilities
Senior Solution Architect (Microsoft) Location: London (Hybrid working available after probation) About the Role - An exciting opportunity has arisen for a Senior Solution Architect (Microsoft) to join a leading Energy Business undergoing significant digital transformation. Reporting to the Architecture Manager and based in London, you will play a key role in shaping and delivering enterprise-wide technology solutions. This position is central to advancing the organisation’s cloud-first strategy, enhancing its Azure, Microsoft 365, and Power Platform estate, and driving the transition towards modern, scalable, and innovative architectures. You will be instrumental in defining both current and future state architectures, enabling business transformation, improving customer experience, and supporting long-term digitalisation goals. Key Responsibilities
PREMIUM
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Get to know OktaOkta is The Worlds Identity Company. We free everyone to safely use any technology, anywhere, on any device or app. Our flexible and neutral products, Okta Platform and Auth0 Platform, provide secure access, authentication, and automation, placing identity at the core of business security and growth. At Okta, we celebrate a variety of perspectives and experiences. We are not looking for someone who checks every single box - were looking for lifelong learners and people who can make us better with their unique experiences. Join our team! Were building a world where Identity belongs to you. About the Role - We are seeking a Pre-sales Architect to join our team of identity security experts. In this role, you will leverage your technical expertise and business acumen to drive customer success, helping organisations modernise and secure their identity ecosystems.
Get to know OktaOkta is The Worlds Identity Company. We free everyone to safely use any technology, anywhere, on any device or app. Our flexible and neutral products, Okta Platform and Auth0 Platform, provide secure access, authentication, and automation, placing identity at the core of business security and growth. At Okta, we celebrate a variety of perspectives and experiences. We are not looking for someone who checks every single box - were looking for lifelong learners and people who can make us better with their unique experiences. Join our team! Were building a world where Identity belongs to you. About the Role - We are seeking a Pre-sales Architect to join our team of identity security experts. In this role, you will leverage your technical expertise and business acumen to drive customer success, helping organisations modernise and secure their identity ecosystems.
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Software Engineer (Azure Certified / C# .Net)
Software Engineer (Azure Certified / C# .Net)
Hays
Portsmouth (PO1)
£56000 - £61000 per annum + £56-61k
Depth of knowledge in Azure is crucial, extending to use of Azure Functions, App Services and API Management App services. You should have good experience building / integrating API's and pushing CI/CD pipelines using GIT in an Agile environment and will have a strong command of the entire SDLC.
Depth of knowledge in Azure is crucial, extending to use of Azure Functions, App Services and API Management App services. You should have good experience building / integrating API's and pushing CI/CD pipelines using GIT in an Agile environment and will have a strong command of the entire SDLC.
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Security Testing Practise Lead
Security Testing Practise Lead
Stott & May Professional Search Limited
London
£75000 - £85000 per annum
Strong capability across web, API, cloud, infrastructure, and network testing
Strong capability across web, API, cloud, infrastructure, and network testing
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Test newly developed features and perform regression testing of our casino products, including API as well as sportsbook and CMS-related functionality Improve/refactor the testing automation framework - Perform API testing using Java/RestAssured - Hands on experience of API testing
Test newly developed features and perform regression testing of our casino products, including API as well as sportsbook and CMS-related functionality Improve/refactor the testing automation framework - Perform API testing using Java/RestAssured - Hands on experience of API testing
Integration and API testing across Salesforce, SAP, and downstream systems
Integration and API testing across Salesforce, SAP, and downstream systems
Related Jobs
Locations
- The City, City (EC3)
- Shoreditch
- The City, City (EC2)
- Charing Cross
- Moorgate
- The City, City (EC4)
- Canary Wharf
- Chilton
- Euston
- Fawley
- City of London
- Central London
- West End
- East London
- Reading
- Dartford
- Milton Keynes
- Oxford
- Wokingham
- Bracknell
- London
- Berkshire
- Hampshire
- Oxfordshire
- Buckinghamshire
- West Sussex
- Kent
- Surrey
- East Sussex
- Hertfordshire
- South East
- South West