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        33 Contract API jobs in Oxfordshire + 20 miles

        Senior Backend Developer - Python

        IO Associates
        Oxfordshire
        Negotiable
        Senior Backend Engineer - Python Outside IR35 Hybrid - Oxford or London | Contract Our client, a UK-based deep tech start-up, is seeking an experienced Senior Backend Engineer (Python & Django or Flask) to own and operate mission-critical backend services powering generative AI products. You'll architect, build, and run scalable APIs and data services end-to-end, collaborating closely with AI engineers to deliver new features from concept to production. This role offers the opportunity to shape the backend systems at the core of cutting-edge AI, with a strong focus on performance, reliability, and security. Key Responsibilities * Architect and evolve scalable backend services in Python (FastAPI/Django/Flask). * Design and operate RESTful APIs aligned with OpenAPI/Swagger. * Implement authentication and authorization (OAuth2/OIDC, permissions, session management).
        Senior Backend Engineer - Python Outside IR35 Hybrid - Oxford or London | Contract Our client, a UK-based deep tech start-up, is seeking an experienced Senior Backend Engineer (Python & Django or Flask) to own and operate mission-critical backend services powering generative AI products. You'll architect, build, and run scalable APIs and data services end-to-end, collaborating closely with AI engineers to deliver new features from concept to production. This role offers the opportunity to shape the backend systems at the core of cutting-edge AI, with a strong focus on performance, reliability, and security. Key Responsibilities * Architect and evolve scalable backend services in Python (FastAPI/Django/Flask). * Design and operate RESTful APIs aligned with OpenAPI/Swagger. * Implement authentication and authorization (OAuth2/OIDC, permissions, session management).
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        NEWFEATURED
        New Job Opportunity - Senior Offshore Structures Engineer - 12 Month Outside Ir35 Contract Our Client has a requirement for a Senior Offshore Structures Engineer, who will be required to work on a contract basis fully remote. Contract Length: Initially 12 Months Location: Fully Remote (Offices in Basingstoke, UK) Engagement: Outside IR35 or PAYE (both considered) Role Overview We are seeking an experienced Senior Offshore Structural Engineer to join our team. You will be responsible for the execution, review, and approval of structural analyses and designs for offshore substructures and topsides across all project phases, from concept through to operations. Key Responsibilities * Perform structural analyses for offshore substructures and topsides. * Define and evaluate optimal technical solutions during all project stages (feasibility, FEED, detailed design).
        New Job Opportunity - Senior Offshore Structures Engineer - 12 Month Outside Ir35 Contract Our Client has a requirement for a Senior Offshore Structures Engineer, who will be required to work on a contract basis fully remote. Contract Length: Initially 12 Months Location: Fully Remote (Offices in Basingstoke, UK) Engagement: Outside IR35 or PAYE (both considered) Role Overview We are seeking an experienced Senior Offshore Structural Engineer to join our team. You will be responsible for the execution, review, and approval of structural analyses and designs for offshore substructures and topsides across all project phases, from concept through to operations. Key Responsibilities * Perform structural analyses for offshore substructures and topsides. * Define and evaluate optimal technical solutions during all project stages (feasibility, FEED, detailed design).
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        NEW
        Halian Technology is looking for a seasoned contractor for a client that has a desire to integrate all of their APIs to move their business technology on to the next step. We are looking for an integration engineer who can help shape the future of the systems by working with providers and making sure APIs plug up to each other. This will be a 6 month contact and Inside IR35 You will have experience in the following. -Strong documentation and communication - Ability to work with business stakeholders (e.g., Marketing, Ops) - Project management or agile familiarity - Problem-solving and debugging - Security awareness (especially around data flows and API access) - Testing and Quality Assurance Tech RESTful API design and integration Power Automate (workflow automation) Power Apps (low-code app development) SQL (data querying and transformation API authentication methods
        Halian Technology is looking for a seasoned contractor for a client that has a desire to integrate all of their APIs to move their business technology on to the next step. We are looking for an integration engineer who can help shape the future of the systems by working with providers and making sure APIs plug up to each other. This will be a 6 month contact and Inside IR35 You will have experience in the following. -Strong documentation and communication - Ability to work with business stakeholders (e.g., Marketing, Ops) - Project management or agile familiarity - Problem-solving and debugging - Security awareness (especially around data flows and API access) - Testing and Quality Assurance Tech RESTful API design and integration Power Automate (workflow automation) Power Apps (low-code app development) SQL (data querying and transformation API authentication methods
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        NEW
        This is a fantastic opportunity to work as a contract Automation Tester for an ecommerce company, on a long term contract, remotely, inside IR35. * .Net/C# * WinDriver * Specflow * API * Azure If you do have the relevant experience for this Automation Tester position, please do apply.
        This is a fantastic opportunity to work as a contract Automation Tester for an ecommerce company, on a long term contract, remotely, inside IR35. * .Net/C# * WinDriver * Specflow * API * Azure If you do have the relevant experience for this Automation Tester position, please do apply.
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        This is a fantastic opportunity to work as a contract Automation Tester for an ecommerce company, on a long term contract, remotely, inside IR35. * .Net/C# * WinDriver * Specflow * API * Azure If you do have the relevant experience for this Automation Tester position, please do apply.
        This is a fantastic opportunity to work as a contract Automation Tester for an ecommerce company, on a long term contract, remotely, inside IR35. * .Net/C# * WinDriver * Specflow * API * Azure If you do have the relevant experience for this Automation Tester position, please do apply.
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        NEW

        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
        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
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        NEW

        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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        NEW

        Software Developer

        Nextech Group Limited
        MK1, Milton Keynes
        £45000 - £50000 per annum
        Senior Software Engineer Salary: up to £50k Location: Buckinghamshire My client, an innovative leader in the technology space, is seeking a Senior Software Engineer to drive the development of next-generation Windows desktop applications. This role blends desktop engineering, networking, and real-time data integration, offering the chance to work on truly cutting-edge projects. Key Responsibilities * Build and enhance Electron-based desktop applications * Integrate IP cameras via TCP/IP protocols * Develop mapping and geolocation features * Optimize and extend Node.js applications * Implement API integrations with external services * Collaborate using modern Git workflows * Contribute across the full technology stack What We're Looking For * 5+ years software development experience * 3+ years hands-on with Electron * Strong expertise in TCP/IP networking
        Senior Software Engineer Salary: up to £50k Location: Buckinghamshire My client, an innovative leader in the technology space, is seeking a Senior Software Engineer to drive the development of next-generation Windows desktop applications. This role blends desktop engineering, networking, and real-time data integration, offering the chance to work on truly cutting-edge projects. Key Responsibilities * Build and enhance Electron-based desktop applications * Integrate IP cameras via TCP/IP protocols * Develop mapping and geolocation features * Optimize and extend Node.js applications * Implement API integrations with external services * Collaborate using modern Git workflows * Contribute across the full technology stack What We're Looking For * 5+ years software development experience * 3+ years hands-on with Electron * Strong expertise in TCP/IP networking
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        WordPress Developer - Reading

        Transparent Technology
        RG1, Reading
        £30000 - £45000 per annum + bens
        WordPress Developer - PHP / HTML / CSS - Up to £45k + Benefits An established digital agency is seeking a WordPress Developer to join their collaborative production team. You'll be building bespoke WordPress websites and applications, working closely with designers and developers to deliver high-quality, responsive, and user-friendly solutions for a variety of clients. * Develop and maintain custom WordPress themes and plugins * Work on responsive layouts with HTML5, CSS3, and PHP * Integrate APIs and contribute to bespoke functionality * Ensure accessibility, usability, and performance across platforms * Collaborate with the wider team and contribute to project estimates and documentation Skills & Experience Required * Strong WordPress development experience (themes, plugins, custom builds) * Proficiency with PHP and front-end technologies (HTML5, CSS3, JavaScript)
        WordPress Developer - PHP / HTML / CSS - Up to £45k + Benefits An established digital agency is seeking a WordPress Developer to join their collaborative production team. You'll be building bespoke WordPress websites and applications, working closely with designers and developers to deliver high-quality, responsive, and user-friendly solutions for a variety of clients. * Develop and maintain custom WordPress themes and plugins * Work on responsive layouts with HTML5, CSS3, and PHP * Integrate APIs and contribute to bespoke functionality * Ensure accessibility, usability, and performance across platforms * Collaborate with the wider team and contribute to project estimates and documentation Skills & Experience Required * Strong WordPress development experience (themes, plugins, custom builds) * Proficiency with PHP and front-end technologies (HTML5, CSS3, JavaScript)
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        NEW
        Title: Laboratory Systems Specialist Location: Slough Visa and Relocation support is offered with this role. Today, Lonza is a global leader in life sciences operating across five continents. While we work in science, theres no magic formula to how we do it. Our greatest scientific solution is talented people working together, devising ideas that help businesses to help people. In exchange, we let our people own their careers. Their ideas, big and small, genuinely improve the world. And thats the kind of work we want to be part of. The role of a Laboratory Systems Specialist is to lead the development and implementation of robust Lab/digital infrastructure within our R&D laboratories for the UK and US locations.
        Title: Laboratory Systems Specialist Location: Slough Visa and Relocation support is offered with this role. Today, Lonza is a global leader in life sciences operating across five continents. While we work in science, theres no magic formula to how we do it. Our greatest scientific solution is talented people working together, devising ideas that help businesses to help people. In exchange, we let our people own their careers. Their ideas, big and small, genuinely improve the world. And thats the kind of work we want to be part of. The role of a Laboratory Systems Specialist is to lead the development and implementation of robust Lab/digital infrastructure within our R&D laboratories for the UK and US locations.
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        NEW
        Halian Technology is looking for a seasoned contractor for a client that has a desire to integrate all of their APIs to move their business technology on to the next step. We are looking for an integration engineer who can help shape the future of the systems by working with providers and making sure APIs plug up to each other. This will be a 6 month contact and outside IR35. You will have experience in the following. -Strong documentation and communication - Ability to work with business stakeholders (e.g., Marketing, Ops) - Project management or agile familiarity - Problem-solving and debugging - Security awareness (especially around data flows and API access) - Testing and Quality Assurance Tech RESTful API design and integration Power Automate (workflow automation) Power Apps (low-code app development) SQL (data querying and transformation
        Halian Technology is looking for a seasoned contractor for a client that has a desire to integrate all of their APIs to move their business technology on to the next step. We are looking for an integration engineer who can help shape the future of the systems by working with providers and making sure APIs plug up to each other. This will be a 6 month contact and outside IR35. You will have experience in the following. -Strong documentation and communication - Ability to work with business stakeholders (e.g., Marketing, Ops) - Project management or agile familiarity - Problem-solving and debugging - Security awareness (especially around data flows and API access) - Testing and Quality Assurance Tech RESTful API design and integration Power Automate (workflow automation) Power Apps (low-code app development) SQL (data querying and transformation
        more
        NEW
        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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        NEW

        Senior Databricks Engineer

        Bibby Financial Services
        Adderbury, OX17 3NS
        £60,000 - £70,000 per annum
        Bibby Financial Services have an exciting opportunity available for a reliable Senior Databricks Engineer to join our team. You will join us on a full time, permanent basisand in return, you will receive a competitive salary of £60,000 - £70,000 per annum. As our Senior Databricks Engineer, you will operate within an Agile delivery environment, working closely with the Data Product Manager and Data Architect to ensure your team maintains a pipeline of delivery against the Backlog; providing vital insight from our wide-ranging dataset to support executive and operational decision making that will underpin sustained growth of BFS business units domestically and internationally.
        Bibby Financial Services have an exciting opportunity available for a reliable Senior Databricks Engineer to join our team. You will join us on a full time, permanent basisand in return, you will receive a competitive salary of £60,000 - £70,000 per annum. As our Senior Databricks Engineer, you will operate within an Agile delivery environment, working closely with the Data Product Manager and Data Architect to ensure your team maintains a pipeline of delivery against the Backlog; providing vital insight from our wide-ranging dataset to support executive and operational decision making that will underpin sustained growth of BFS business units domestically and internationally.
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        NEWPREMIUM

        Security Service Engineer

        Chubb Fire & Security Limited
        OX15, Banbury
        From £35,000 to £40,000 per annum
        Think you know Chubb? We might just surprise you! Chubb is so much more than a fire and security business; we are an organisation that delivers innovative solutions and leverages new technologies to provide best in class service to our expanding client base. You wont see locks and safes here, but we are proud of our 200-year heritage. Our commitment to our people is to continually develop and innovate so that we grow together as your career unfolds. As part of the global API Group, we join a family of organisations where leadership, and leadership development is our most powerful strategic advantage and the best way to invest in our people. SALARY: Opportunity to earn in excess of £40,000 (This includes basic and additional supplements - base is determined on experience) LOCATION:Banbury / Bicester Area
        Think you know Chubb? We might just surprise you! Chubb is so much more than a fire and security business; we are an organisation that delivers innovative solutions and leverages new technologies to provide best in class service to our expanding client base. You wont see locks and safes here, but we are proud of our 200-year heritage. Our commitment to our people is to continually develop and innovate so that we grow together as your career unfolds. As part of the global API Group, we join a family of organisations where leadership, and leadership development is our most powerful strategic advantage and the best way to invest in our people. SALARY: Opportunity to earn in excess of £40,000 (This includes basic and additional supplements - base is determined on experience) LOCATION:Banbury / Bicester Area
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        NEWFEATURED

        Solution Architect

        Stackstudio Digital Ltd.
        SL4, Windsor
        From £525 to £550 per day
        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.
        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.
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        NEW

        Salesforce Vlocity Developer

        Stackstudio Digital Ltd.
        SL4, Windsor
        From £475 to £500 per day
        Job Title: Salesforce Vlocity Developer Location: Windsor, UK Work Mode (Mandatory): Hybrid (visit to office once every week) to begin with Job Purpose and Primary Objectives Salesforce Vlocity development for a major business unit Key Responsibilities * Design and develop custom Vlocity solutions on top of the Salesforce platform, including CPQ, CLM, and OmniStudio. * Work with the design and product teams to translate product requirements into technical specifications. * Build and maintain Vlocity data models, including objects, fields, and relationships. * Develop custom Apex classes, triggers, and Visualforce pages to extend the functionality of the Salesforce platform. * Implement Vlocity integration with external systems using REST and SOAP APIs.
        Job Title: Salesforce Vlocity Developer Location: Windsor, UK Work Mode (Mandatory): Hybrid (visit to office once every week) to begin with Job Purpose and Primary Objectives Salesforce Vlocity development for a major business unit Key Responsibilities * Design and develop custom Vlocity solutions on top of the Salesforce platform, including CPQ, CLM, and OmniStudio. * Work with the design and product teams to translate product requirements into technical specifications. * Build and maintain Vlocity data models, including objects, fields, and relationships. * Develop custom Apex classes, triggers, and Visualforce pages to extend the functionality of the Salesforce platform. * Implement Vlocity integration with external systems using REST and SOAP APIs.
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        NEW

        Software Test Analyst

        Hireful
        Banbury, Oxfordshire
        £35K - £40K Basic + Benefits package
        Are you looking to progress your career as a Software Test Analyst, at a UK based SaaS product company who have recently secured heavy investment & are scaling their technical teams? Do you love problem-solving, have high attention to detail & are looking for the career opportunity to progress skills in mobile / web & software testing in a technical environment? You will work closely with the Test Lead & cross-functional teams, including developers, product managers, and UI designers, to clarify requirements, identify risks, and ensure comprehensive test coverage. Job title: Test Analyst (Web, Mobile, Software) may also be known as: QA Analyst, Mobile Application Tester, Software Tester, etc. Location: Banbury, Oxfordshire. We operate a hybrid working environment: 2 days in-office, 3 days from home.
        Are you looking to progress your career as a Software Test Analyst, at a UK based SaaS product company who have recently secured heavy investment & are scaling their technical teams? Do you love problem-solving, have high attention to detail & are looking for the career opportunity to progress skills in mobile / web & software testing in a technical environment? You will work closely with the Test Lead & cross-functional teams, including developers, product managers, and UI designers, to clarify requirements, identify risks, and ensure comprehensive test coverage. Job title: Test Analyst (Web, Mobile, Software) may also be known as: QA Analyst, Mobile Application Tester, Software Tester, etc. Location: Banbury, Oxfordshire. We operate a hybrid working environment: 2 days in-office, 3 days from home.
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        NEWFEATURED

        Lead Android Engineer

        Halian Technology Limited
        RG1, Reading
        From £82,000 to £92,000 per annum
        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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        NEW

        Lead Android Engineer

        Halian Technology Limited
        RG12, Bracknell
        From £82,000 to £92,000 per annum
        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.
        more
        NEW
        18 Month Fixed Term Contract Milton Keynes: £53,000 - £57,000 Hybrid Working Ready to shape the future of digital assessment through precision, collaboration, and innovation? AQA is looking for a Senior Test Analyst - Automation with proven experience in creating automated tests using BDD methodology. You'll translate specifications into meaningful automated tests using C# toolsets and libraries such as Playwright. You're someone who thrives on quality, champions best practices, and is eager to play a key role in delivering the systems behind millions of GCSE and A-level results across the UK and internationally. This is more than just writing test scripts - it's your opportunity to influence how we build, test, and deliver software that truly matters.
        18 Month Fixed Term Contract Milton Keynes: £53,000 - £57,000 Hybrid Working Ready to shape the future of digital assessment through precision, collaboration, and innovation? AQA is looking for a Senior Test Analyst - Automation with proven experience in creating automated tests using BDD methodology. You'll translate specifications into meaningful automated tests using C# toolsets and libraries such as Playwright. You're someone who thrives on quality, champions best practices, and is eager to play a key role in delivering the systems behind millions of GCSE and A-level results across the UK and internationally. This is more than just writing test scripts - it's your opportunity to influence how we build, test, and deliver software that truly matters.
        more
        NEWFEATURED
        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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        NEWFEATURED

        Technical Architect

        Queen Square Recruitment Limited
        RG40, Wokingham
        £500 per day inside IR35
        Azure Technical Architect Start date: ASAP (within the next 4 weeks) Contract length: 6 months Day rate: £500 per day inside IR35 Location: Wokingham - 3 days per week onsite Our client, a large global consultancy, is looking for an Azure Solution Architectto play a key role in the RegDB decommission program, working closely with stakeholders and offshore teams to design, develop, and deliver high-quality Azure-based solutions. This is a hands-on role where you will combine solution design expertise with strong development and integration skills. * Collaborate with stakeholders and coordinate delivery with offshore teams. * Lead the development of the RegDB program and ensure on-time delivery of project code. * Provide clear and timely progress updates to stakeholders (daily/weekly). * Conduct requirement meetings and translate needs into technical solutions.
        Azure Technical Architect Start date: ASAP (within the next 4 weeks) Contract length: 6 months Day rate: £500 per day inside IR35 Location: Wokingham - 3 days per week onsite Our client, a large global consultancy, is looking for an Azure Solution Architectto play a key role in the RegDB decommission program, working closely with stakeholders and offshore teams to design, develop, and deliver high-quality Azure-based solutions. This is a hands-on role where you will combine solution design expertise with strong development and integration skills. * Collaborate with stakeholders and coordinate delivery with offshore teams. * Lead the development of the RegDB program and ensure on-time delivery of project code. * Provide clear and timely progress updates to stakeholders (daily/weekly). * Conduct requirement meetings and translate needs into technical solutions.
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        NEW
        Are you an experienced .Net (C#) Developer, with some solid experience in API development, looking to take on your next Software Engineering role in a growing SaaS product company? Keen to grow your technical skills around .Net 8 / C# / API & MySQL development & look into new Generative AI / LLM dev' tools, too? If yes to the above & you’d like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we’d like to speak with you! Job title: .Net (C#) API Developer Location: Banbury, Oxfordshire. Hybrid working: 2 office days per week, 3 from home, flexible. Salary: ~£50K Basic + Benefits package. We can be somewhat flexible though - so please just get in touch. You’ll have the full support of an Agile Scrum Master, excellent technical product team & obviously fellow software engineers in your team.
        Are you an experienced .Net (C#) Developer, with some solid experience in API development, looking to take on your next Software Engineering role in a growing SaaS product company? Keen to grow your technical skills around .Net 8 / C# / API & MySQL development & look into new Generative AI / LLM dev' tools, too? If yes to the above & you’d like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we’d like to speak with you! Job title: .Net (C#) API Developer Location: Banbury, Oxfordshire. Hybrid working: 2 office days per week, 3 from home, flexible. Salary: ~£50K Basic + Benefits package. We can be somewhat flexible though - so please just get in touch. You’ll have the full support of an Agile Scrum Master, excellent technical product team & obviously fellow software engineers in your team.
        more
        NEWFEATURED

        Lead .Net Software Developer

        Hireful
        Milton Keynes, Buckinghamshire
        £65k - £75k base + Bonus
        Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer Salary: £65k - £75k base + Bonus Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more Location: Milton Keynes – Hybrid (2 days a week in office)
        Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer Salary: £65k - £75k base + Bonus Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more Location: Milton Keynes – Hybrid (2 days a week in office)
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        Salesforce Developer

        Queen Square Recruitment Limited
        SL4, Windsor
        £500 per day
        Job Title: Salesforce Vlocity Developer Location: Windsor, UK (Hybrid 1 day per week onsite) Contract Duration: 6 Months Day Rate: £500 Inside IR35 About the Role We are looking for an experienced Salesforce Vlocity Developer to join a major business unit on a 6-month contract. This is a hybrid role requiring weekly onsite presence in Windsor, offering an exciting opportunity to work on cutting-edge Salesforce solutions within a collaborative team environment. Key Responsibilities * Design and develop custom Vlocity solutions on the Salesforce platform, including CPQ, CLM, and OmniStudio. * Translate business and product requirements into technical specifications. * Build and maintain Vlocity data models, including objects, fields, and relationships. * Develop custom Apex classes, triggers, and Lightning Web Components.
        Job Title: Salesforce Vlocity Developer Location: Windsor, UK (Hybrid 1 day per week onsite) Contract Duration: 6 Months Day Rate: £500 Inside IR35 About the Role We are looking for an experienced Salesforce Vlocity Developer to join a major business unit on a 6-month contract. This is a hybrid role requiring weekly onsite presence in Windsor, offering an exciting opportunity to work on cutting-edge Salesforce solutions within a collaborative team environment. Key Responsibilities * Design and develop custom Vlocity solutions on the Salesforce platform, including CPQ, CLM, and OmniStudio. * Translate business and product requirements into technical specifications. * Build and maintain Vlocity data models, including objects, fields, and relationships. * Develop custom Apex classes, triggers, and Lightning Web Components.
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        What is the average salary for API in Oxfordshire?

        Average salary per year
        £52,499

        The average salary for a API in Oxfordshire is £52,499. API in Oxfordshire salaries range from £48,750 to £62,499.

        Frequently Asked Questions

        How many contract API jobs are there in Oxfordshire?
        There are 33 contract API jobs within 20 miles of Oxfordshire available on Jobsite right now.

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