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26 Contract API jobs in Oxfordshire + 20 miles
Halian Technology are searching for an Interim API Integrations Specialist to join our client's forward-thinking technology team. * Design, develop, and maintain API integrations between internal systems and external SaaS platforms. * Build and maintain API documentation, providing guidance on integration best practices. * Familiarity with RESTful API design, OAuth2/API authentication, and workflow automation (Power Automate). * Familiarity with Power Apps, Power BI, Microsoft Graph API, Azure Logic Apps/Functions, and Dataverse. Apply now and help energise the future with your expertise in API integration.
Halian Technology are searching for an Interim API Integrations Specialist to join our client's forward-thinking technology team. * Design, develop, and maintain API integrations between internal systems and external SaaS platforms. * Build and maintain API documentation, providing guidance on integration best practices. * Familiarity with RESTful API design, OAuth2/API authentication, and workflow automation (Power Automate). * Familiarity with Power Apps, Power BI, Microsoft Graph API, Azure Logic Apps/Functions, and Dataverse. Apply now and help energise the future with your expertise in API integration.
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Automation Tester - .Net - Specflow - Remote - Inside IR35
Automation Tester - .Net - Specflow - Remote - Inside IR35
The Bridge (IT Recruitment) Limited
NN4, Northampton, NN4 0AB
£550 - 575 per day
API
API
Security awareness (especially around data flows and API access) RESTful API design and integration API authentication methods
Security awareness (especially around data flows and API access) RESTful API design and integration API authentication methods
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Integration Engineer Contact (Outside IR35) - Oxfordshire
Integration Engineer Contact (Outside IR35) - Oxfordshire
Halian Technology Limited
OX1, Oxford
From £400 to £550 per day
Security awareness (especially around data flows and API access) RESTful API design and integration API authentication methods
Security awareness (especially around data flows and API access) RESTful API design and integration API authentication methods
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Keywords: WordPress Developer, PHP Developer, Front End Developer, Web Developer, HTML, CSS, JavaScript, Git, API, Accessibility, Digital Agency.
Keywords: WordPress Developer, PHP Developer, Front End Developer, Web Developer, HTML, CSS, JavaScript, Git, API, Accessibility, Digital Agency.
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Lead .Net Software Developer
Lead .Net Software Developer
Hireful
Milton Keynes, Buckinghamshire
£65k - £75k base salary plus Bonus and awesome 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) If you’ve got strong .Net (C#) experience and skills in GitHub, APIs, Pos
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) If you’ve got strong .Net (C#) experience and skills in GitHub, APIs, Pos
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Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
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Job Title: Solution Architect - Location: Windsor, UK - Work Model: Hybrid (1 day per week in office) Job Type: Contract (Inside IR35) Duration: 6 Months - We are seeking an experienced Solution Architect to join our team in Windsor. You will play a key role in defining, communicating, and implementing strategic technology standards and roadmaps, ensuring robust and scalable solutions for business transformation initiatives. This is a hybrid role requiring one day per week in the office. * Identify, publish, and communicate strategic technology standards, frameworks, principles, and roadmaps to guide technology decisions and leverage efficiency opportunities. * Analyze the impact of implementing new technologies into the IT infrastructure. * Assist Solution Architects, Product Specialists, and Project Managers in matching technology services to specific business servi
Job Title: Solution Architect - Location: Windsor, UK - Work Model: Hybrid (1 day per week in office) Job Type: Contract (Inside IR35) Duration: 6 Months - We are seeking an experienced Solution Architect to join our team in Windsor. You will play a key role in defining, communicating, and implementing strategic technology standards and roadmaps, ensuring robust and scalable solutions for business transformation initiatives. This is a hybrid role requiring one day per week in the office. * Identify, publish, and communicate strategic technology standards, frameworks, principles, and roadmaps to guide technology decisions and leverage efficiency opportunities. * Analyze the impact of implementing new technologies into the IT infrastructure. * Assist Solution Architects, Product Specialists, and Project Managers in matching technology services to specific business servi
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We are looking for a Software Engineer with a strong foundation in API development and C# to join our data engineering team in a highly regulated industry. Were seeking candidates with over 5 years of relevant experience, a solid understanding of software system design, and a strong command of C# and modern API development patterns. Experience with authentication, authorization, and secure API communication (OAuth2, JWT, etc.). Familiarity with API gateways, microservice architecture, and asynchronous messaging patterns (e.g., queues, event buses).
We are looking for a Software Engineer with a strong foundation in API development and C# to join our data engineering team in a highly regulated industry. Were seeking candidates with over 5 years of relevant experience, a solid understanding of software system design, and a strong command of C# and modern API development patterns. Experience with authentication, authorization, and secure API communication (OAuth2, JWT, etc.). Familiarity with API gateways, microservice architecture, and asynchronous messaging patterns (e.g., queues, event buses).
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Developer, .NET, C#, AI Code, Remote, COR7355
Developer, .NET, C#, AI Code, Remote, COR7355
Corriculo Ltd
Oxford, Oxfordshire
£40k - 50k per year + Remote Working
A Developer with experience in .NET, C#, and JavaScript is urgently required to join a dynamic and innovative team in a leading organisation working on a fully remote basis. This is an excellent opportunity to contribute to technological developments, streamline processes, and enhance operational efficiency. The Role - As a Developer, you will work closely with the Senior Developer to design and implement internal tools and solutions. Collaborating with various departments, you’ll support development-related queries and build integrations with third-party platforms via APIs. This role is central to improving workflows, enabling innovative practices, and contributing to the company’s technology strategy. The Company - Our client is a forward-thinking organisation committed to technological advancement and efficiency.
A Developer with experience in .NET, C#, and JavaScript is urgently required to join a dynamic and innovative team in a leading organisation working on a fully remote basis. This is an excellent opportunity to contribute to technological developments, streamline processes, and enhance operational efficiency. The Role - As a Developer, you will work closely with the Senior Developer to design and implement internal tools and solutions. Collaborating with various departments, you’ll support development-related queries and build integrations with third-party platforms via APIs. This role is central to improving workflows, enabling innovative practices, and contributing to the company’s technology strategy. The Company - Our client is a forward-thinking organisation committed to technological advancement and efficiency.
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Full Stack Software Engineer - AI Innovation
Full Stack Software Engineer - AI Innovation
Connexa
MK1, Milton Keynes
£60000 - £70000 per annum + 20% Bonus
Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
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JoinusasaDataPlatformEngineerforourclient. AtPeregrine,werealwaysseekingSpecialistTalentthathavetheidealmixofskills,experience,and - attitude,toplacewithourvastarrayofclients. FromBusinessAnalystsinlargegovernment - organisationstoSoftwareDevelopersintheprivatesectorwearealwaysinsearchofthebest - talenttoplace,now. HowSpecialistTalentWorks - AtPeregrine,wefindthebesttalentforourclients. AsapermanentemployeeofPeregrine,with - accesstoallourstandardbenefits,youwillbedeployedacrossourportfolioofclientsasaspecialistconsultant,workingonawidearrayofcomplexprojectsacrossmultipleindustries. AsaDataPlatformEngineerinahighlyregulatedenvironment,youwillberesponsiblefordesigning,building,andmaintainingsecureandscalabledatainfrastructurethatsupportsbothcloudandonpremisesplatforms. Youwillplayakeyroleinensuringthatalldatasystemscomplywithindustryregulationsandsecuritystandardswhile
JoinusasaDataPlatformEngineerforourclient. AtPeregrine,werealwaysseekingSpecialistTalentthathavetheidealmixofskills,experience,and - attitude,toplacewithourvastarrayofclients. FromBusinessAnalystsinlargegovernment - organisationstoSoftwareDevelopersintheprivatesectorwearealwaysinsearchofthebest - talenttoplace,now. HowSpecialistTalentWorks - AtPeregrine,wefindthebesttalentforourclients. AsapermanentemployeeofPeregrine,with - accesstoallourstandardbenefits,youwillbedeployedacrossourportfolioofclientsasaspecialistconsultant,workingonawidearrayofcomplexprojectsacrossmultipleindustries. AsaDataPlatformEngineerinahighlyregulatedenvironment,youwillberesponsiblefordesigning,building,andmaintainingsecureandscalabledatainfrastructurethatsupportsbothcloudandonpremisesplatforms. Youwillplayakeyroleinensuringthatalldatasystemscomplywithindustryregulationsandsecuritystandardswhile
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ESRI GIS Subject Matter Expert (SME)
ESRI GIS Subject Matter Expert (SME)
Stackstudio Digital Ltd.
RG40, Wokingham
From £400 to £450 per day
Role/Job Title: ESRI GIS Subject Matter Expert (SME) Work Location: Wokingham - If Hybrid, Days Required in Office: 3 days a week - The Role - We are seeking an experienced ESRI GIS Subject Matter Expert (SME) to lead the design, implementation, and optimization of a scalable GIS platform that supports strategic spatial energy planning. The platform will enable environmental impact assessments, economic modelling, and the integration of community preferences. The SME will be responsible for consolidating and migrating diverse spatial datasets into a unified system, ensuring data accuracy, quality, and accessibility, while supporting secure, role-based access, automation, and interoperability with internal and external systems. Your Responsibilities - Platform Design & Implementation * Architect and deploy a scalable ESRI-based GIS platform (ArcGIS Enterprise, ArcGIS O
Role/Job Title: ESRI GIS Subject Matter Expert (SME) Work Location: Wokingham - If Hybrid, Days Required in Office: 3 days a week - The Role - We are seeking an experienced ESRI GIS Subject Matter Expert (SME) to lead the design, implementation, and optimization of a scalable GIS platform that supports strategic spatial energy planning. The platform will enable environmental impact assessments, economic modelling, and the integration of community preferences. The SME will be responsible for consolidating and migrating diverse spatial datasets into a unified system, ensuring data accuracy, quality, and accessibility, while supporting secure, role-based access, automation, and interoperability with internal and external systems. Your Responsibilities - Platform Design & Implementation * Architect and deploy a scalable ESRI-based GIS platform (ArcGIS Enterprise, ArcGIS O
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Digital Workflow & Automation Consultant
Digital Workflow & Automation Consultant
Apogee Corporation**
RG1, Reading, RG1 1LX
Competitive Salary + Car + Remote Working
With over 30 years of expertise, Apogee transforms how organisations of every size and sector manage their IT delivering everything they need through one seamless point of contact. As an independent subsidiary of HP Inc., we combine the agility of a specialist provider with the power of one of the worlds leading technology companies, giving our clients instant access to cutting-edge innovation backed by market-leading service operations! This is more than a technical role it is an opportunity to shape how organisations work! You will be at the forefront of designing and implementing intelligent workflows that free people from repetitive tasks and unlock their productivity. Working closely with colleagues, customers, and partners, you will transform processes and integrate cutting-edge technologies into real-world solutions. What You Will Do
With over 30 years of expertise, Apogee transforms how organisations of every size and sector manage their IT delivering everything they need through one seamless point of contact. As an independent subsidiary of HP Inc., we combine the agility of a specialist provider with the power of one of the worlds leading technology companies, giving our clients instant access to cutting-edge innovation backed by market-leading service operations! This is more than a technical role it is an opportunity to shape how organisations work! You will be at the forefront of designing and implementing intelligent workflows that free people from repetitive tasks and unlock their productivity. Working closely with colleagues, customers, and partners, you will transform processes and integrate cutting-edge technologies into real-world solutions. What You Will Do
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Halian Technology are searching for aLead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
Halian Technology are searching for aLead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
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Halian Technology are searching for aLead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
Halian Technology are searching for aLead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
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Proficiency in API testing (Postman or equivalent) and SQL for data validation.
Proficiency in API testing (Postman or equivalent) and SQL for data validation.
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Were looking for an Interim API Integrations Specialist to join our team on an initial 3-month contract with the potential for extension based on project requirements . * Design, develop, and maintain API integrations between internal systems & external SaaS platforms * Build & maintain API documentation & support internal teams with integration best practices * Minimum of 5 years experience in software development or system integration, including at least 2 years in API design, or technical architecture * Strong understanding of cybersecurity principles, data protection, and global compliance, with familiarity in security best practices, common controls, and OAuth2 / API authentication methods * Hands-on experience with RESTful API design and integration, workflow au
Were looking for an Interim API Integrations Specialist to join our team on an initial 3-month contract with the potential for extension based on project requirements . * Design, develop, and maintain API integrations between internal systems & external SaaS platforms * Build & maintain API documentation & support internal teams with integration best practices * Minimum of 5 years experience in software development or system integration, including at least 2 years in API design, or technical architecture * Strong understanding of cybersecurity principles, data protection, and global compliance, with familiarity in security best practices, common controls, and OAuth2 / API authentication methods * Hands-on experience with RESTful API design and integration, workflow au
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Own end-to-end API and IDoc integration strategy and execution through go-live.
Own end-to-end API and IDoc integration strategy and execution through go-live.
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SharePoint CSOM API
SharePoint CSOM API
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Responsible for configuration and testing of API and Webservices based integrations and develop customisations where required.
Responsible for configuration and testing of API and Webservices based integrations and develop customisations where required.
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Junior Application Security Engineer (Basingstoke, Hybrid 2 days onsite)
Junior Application Security Engineer (Basingstoke, Hybrid 2 days onsite)
Infosum Limited
Basingstoke, Hampshire
Competitive
Familiarity with common security issues (e.g., OWASP Top 10, API security basics).
Familiarity with common security issues (e.g., OWASP Top 10, API security basics).
Document integration flows, including API specs, data mapping, and system interactions
Document integration flows, including API specs, data mapping, and system interactions
Full Stack Engineer (Product Data Compliance) - 12 month FTC- Remote
Full Stack Engineer (Product Data Compliance) - 12 month FTC- Remote
Abcam PLC
Amersham, Buckinghamshire
Competitive
Proficiency in AWS services and serverless architecture including Lambda, API gateway, Elastic Beanstalk, EC2, S3, Aurora, Security Groups, and CloudWatch.
Proficiency in AWS services and serverless architecture including Lambda, API gateway, Elastic Beanstalk, EC2, S3, Aurora, Security Groups, and CloudWatch.
Strong API development and database experience (Postgres/Oracle + SQL).
Strong API development and database experience (Postgres/Oracle + SQL).
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