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        Contract
        112

        1 Contract API job in Southampton + 20 miles

        Senior Software Developer

        Boats Group
        Fareham, Hampshire
        Competitive
        Experience developing API and UI
        Experience developing API and UI
        NEW

        111 exact matches jobs are outside your preferred location

        Solution Architect

        Queen Square Recruitment Limited
        RG40, Wokingham
        £500 per day inside IR35
        Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
        Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
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        NEW

        Security Architect

        Queen Square Recruitment Limited
        Reading, Berkshire
        From £700 to £750 per day
        Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
        Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
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        NEW

        Backend engineer

        LA International Computer Consultants Ltd
        SN13, Corsham
        £500 - £600 per day + price in
        Architect and implement backend services that support secure, air-gapped AI - deployments, with a focus on NLP-based tooling * Develop pipelines for transcription ingestion and real-time analytical insight - generation * Support graph and RAG-based inference layers using data from structured and - unstructured sources * Build and expose APIs for frontend consumption, enabling natural-language - querying, dynamic visualisation, and reporting * Ensure system portability via containerisation * Collaborate closely with data scientists to integrate self-hosted LLMs and - analysis models into the backend infrastructure * Work with platform engineers to tune deployments for hardware-limited - environments - What You Bring * Strong experience building secure, scalable backend systems in Python and/or - Go * Deep understanding of containerised services, particularly in Kuberne
        Architect and implement backend services that support secure, air-gapped AI - deployments, with a focus on NLP-based tooling * Develop pipelines for transcription ingestion and real-time analytical insight - generation * Support graph and RAG-based inference layers using data from structured and - unstructured sources * Build and expose APIs for frontend consumption, enabling natural-language - querying, dynamic visualisation, and reporting * Ensure system portability via containerisation * Collaborate closely with data scientists to integrate self-hosted LLMs and - analysis models into the backend infrastructure * Work with platform engineers to tune deployments for hardware-limited - environments - What You Bring * Strong experience building secure, scalable backend systems in Python and/or - Go * Deep understanding of containerised services, particularly in Kuberne
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        NEW
        HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
        HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
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        NEW

        Senior Data Test Automation Engineer

        Hawk-Eye Innovations Ltd
        Basingstoke, Hampshire
        £58,810 - £80,910 a year
        Proven ability to build and maintain scalable test automation frameworks, with a focus on backend, API, and data systems using tools like Pytest and Postman. * Advanced skills in automating API and backend testing workflows, ensuring robust and reliable system interactions.
        Proven ability to build and maintain scalable test automation frameworks, with a focus on backend, API, and data systems using tools like Pytest and Postman. * Advanced skills in automating API and backend testing workflows, ensuring robust and reliable system interactions.
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        Software Development Lead

        Gigaclear Ltd
        Abingdon, Oxfordshire
        £60,000 - £68,000 a year
        Help shape our technical vision and adapt solutions to meet changing business needs. A mix of hands-on development, leading, coaching and mentoring a team, whilst using your interpersonal skills to communicate with cross functional teams on architectural shaping and decision making. You will work closely and collaborate with Product Owners, Scrum Masters, Delivery Managers, QA, and DevOps to drive high-quality, secure, and performant code. You will uphold engineering standards, support team capability growth, and ensure sustainable delivery practices. * Python Development Capability * Experienced with front-end frameworks (React.js and Next.js) * Experience with TypeScript * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Experience with responsive web design * Understanding of SEO strategies and security
        Help shape our technical vision and adapt solutions to meet changing business needs. A mix of hands-on development, leading, coaching and mentoring a team, whilst using your interpersonal skills to communicate with cross functional teams on architectural shaping and decision making. You will work closely and collaborate with Product Owners, Scrum Masters, Delivery Managers, QA, and DevOps to drive high-quality, secure, and performant code. You will uphold engineering standards, support team capability growth, and ensure sustainable delivery practices. * Python Development Capability * Experienced with front-end frameworks (React.js and Next.js) * Experience with TypeScript * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Experience with responsive web design * Understanding of SEO strategies and security
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        About Unily - Unily partners with the worlds largest and most complex enterprises to power Organizational Velocity through digital Employee Experience transformation. Iconic brands, including Estée Lauder Companies, CVS Health, and British Airways, use Unilys market-leading Employee Experience platform to improve productivity, streamline communication, and foster a highly connected workplace. Unily is the only triple leader recognized by all three of the major analysts. Unily is recognized as a Leader in the 2024 Gartner Magic Quadrant for Intranet Packaged Solutions, the 2024 Forrester Wave: Intranet Platforms, and the IDC MarketScape: Worldwide Experience-Centric Intelligent Digital Workspaces 2024. With these accolades, we continue to grow and expand our employee community with people who are passionate about joining us on this exciting journey. Job Purpose
        About Unily - Unily partners with the worlds largest and most complex enterprises to power Organizational Velocity through digital Employee Experience transformation. Iconic brands, including Estée Lauder Companies, CVS Health, and British Airways, use Unilys market-leading Employee Experience platform to improve productivity, streamline communication, and foster a highly connected workplace. Unily is the only triple leader recognized by all three of the major analysts. Unily is recognized as a Leader in the 2024 Gartner Magic Quadrant for Intranet Packaged Solutions, the 2024 Forrester Wave: Intranet Platforms, and the IDC MarketScape: Worldwide Experience-Centric Intelligent Digital Workspaces 2024. With these accolades, we continue to grow and expand our employee community with people who are passionate about joining us on this exciting journey. Job Purpose
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        SAP Data Migration Specialist

        Surrey Satellite Technology Ltd (SSTL)
        Guildford, Surrey
        Competitive
        We are seeking a skilled SAP Data Migration Specialist to join our team. This contract role sits inside IR35. Duration 6 months - Summary - The successful candidate will have experience in S4 Hana Greenfield data migration and multi LOBs such as Finance, Procurement, Manufacturing and Projects. This role requires meticulous attention to detail, a strong ability to work independently while supporting the team, and effective communications skills for collaboration with Business Users. Key Tasks * Develop and optimize SQL scripts for data extraction, transformation, loading (ETL). * Write robust, efficient, and scalable SQL code for data manipulation, reporting, and analytics across various platforms * Proficiency in writing complex SQL queries, stored procedures, and database triggers * Experienced S/4HANA Public cloud Data Migration consultant covering P2P, OTC, Financ
        We are seeking a skilled SAP Data Migration Specialist to join our team. This contract role sits inside IR35. Duration 6 months - Summary - The successful candidate will have experience in S4 Hana Greenfield data migration and multi LOBs such as Finance, Procurement, Manufacturing and Projects. This role requires meticulous attention to detail, a strong ability to work independently while supporting the team, and effective communications skills for collaboration with Business Users. Key Tasks * Develop and optimize SQL scripts for data extraction, transformation, loading (ETL). * Write robust, efficient, and scalable SQL code for data manipulation, reporting, and analytics across various platforms * Proficiency in writing complex SQL queries, stored procedures, and database triggers * Experienced S/4HANA Public cloud Data Migration consultant covering P2P, OTC, Financ
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        Company Description - Founded by experienced entrepreneurs and engineers in 2016, Pismo is a technology company that provides a comprehensive processing platform for banking, card issuing and financial market infrastructure and helps customers innovate and build the next generation of banking and payment solutions. Pismo joined Visa in 2024. Leveraging Visas solutions, our core platform, and an expanding suite of capabilities, Pismo addresses the technological challenges that large banks, marketplaces, and fintech companies face in migrating from legacy systems to more advanced technology in the market. Pismos cloud-based platform empowers firms to build and launch financial products rapidly, scaling as they grow to have a broader audience while keeping high security and availability standards. Pismos 500+ employees are located in more than 10 countries around the wor
        Company Description - Founded by experienced entrepreneurs and engineers in 2016, Pismo is a technology company that provides a comprehensive processing platform for banking, card issuing and financial market infrastructure and helps customers innovate and build the next generation of banking and payment solutions. Pismo joined Visa in 2024. Leveraging Visas solutions, our core platform, and an expanding suite of capabilities, Pismo addresses the technological challenges that large banks, marketplaces, and fintech companies face in migrating from legacy systems to more advanced technology in the market. Pismos cloud-based platform empowers firms to build and launch financial products rapidly, scaling as they grow to have a broader audience while keeping high security and availability standards. Pismos 500+ employees are located in more than 10 countries around the wor
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        Data Engineer

        Wireless Logic Limited
        Maidenhead, Berkshire
        Competitive
        Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But we're more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 14 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks , we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA , and we have an insatiable hunger to 'wow'! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
        Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But we're more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 14 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks , we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA , and we have an insatiable hunger to 'wow'! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
        more
        ABOUT WIND RIVER Wind River is a global leader in delivering software for mission-critical intelligent systems. For more than four decades, the company has been an innovator and pioneer, powering billions of systems that require the highest levels of security, safety, and reliability. Wind River helps customers across automotive, aerospace, defense, industrial, medical, and telecommunications industries solve complex technology challenges on their journey toward the new intelligent machine economy. The companys software powers generation after generation of the safest, most secure systems in the world. Examples include playing a key role in NASA space missions such as Artemis I, the James Webb Space Telescope, and multiple Mars rovers. Weve achieved recent 5G milestones including the worlds first successful 5G data session with Verizon and building one of the largest
        ABOUT WIND RIVER Wind River is a global leader in delivering software for mission-critical intelligent systems. For more than four decades, the company has been an innovator and pioneer, powering billions of systems that require the highest levels of security, safety, and reliability. Wind River helps customers across automotive, aerospace, defense, industrial, medical, and telecommunications industries solve complex technology challenges on their journey toward the new intelligent machine economy. The companys software powers generation after generation of the safest, most secure systems in the world. Examples include playing a key role in NASA space missions such as Artemis I, the James Webb Space Telescope, and multiple Mars rovers. Weve achieved recent 5G milestones including the worlds first successful 5G data session with Verizon and building one of the largest
        more
        Company Description - Why Babble? Babble is a Customer Experience-led growth business. As the ultimate Trusted Advisor for cloud-based technologies, we specialize in empowering businesses with the best solutions from the world's leading providers. * Microsoft Modern Work * Cybersecurity * Contact Centre Technology * Mobile Solutions * Communications & Connectivity - With nearly 15,000 customers, we're just scratching the surface of our potential. Many of our clients currently benefit from one or two of our technologies, presenting an incredible opportunity to introduce them to our full suite of market-leading solutions. Join us on this exciting journey and let's achieve greatness together! About Us | Leading UK Cloud Solutions Provider | Babble - Job Description - Join Our Dynamic Team as a Key Accounts - Contact Centre as a Service Support Engineer! Are you passionat
        Company Description - Why Babble? Babble is a Customer Experience-led growth business. As the ultimate Trusted Advisor for cloud-based technologies, we specialize in empowering businesses with the best solutions from the world's leading providers. * Microsoft Modern Work * Cybersecurity * Contact Centre Technology * Mobile Solutions * Communications & Connectivity - With nearly 15,000 customers, we're just scratching the surface of our potential. Many of our clients currently benefit from one or two of our technologies, presenting an incredible opportunity to introduce them to our full suite of market-leading solutions. Join us on this exciting journey and let's achieve greatness together! About Us | Leading UK Cloud Solutions Provider | Babble - Job Description - Join Our Dynamic Team as a Key Accounts - Contact Centre as a Service Support Engineer! Are you passionat
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        Software Engineer

        Gigaclear Ltd
        Abingdon, Oxfordshire
        £45,000 - £55,000 a year
        A Full Stack Software Engineering role. A role that will build your technical capabilities, providing a foundation for growth into more senior technical leadership roles. The Software Engineer is a hands-on contributor responsible for delivering secure, maintainable, and performant software as part of a cross-functional Agile team. Working closely with Product, QA, DevOps, and fellow engineers, this role helps shape technical solutions and contributes to quality practices. Essential Skills & Experience * Strong Python Development Capability 3 years+ * Experienced with front-end frameworks (React.js and Next.js) * Experience with TypeScript * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Experience with responsive web design * Understanding of SEO strategies and security standards
        A Full Stack Software Engineering role. A role that will build your technical capabilities, providing a foundation for growth into more senior technical leadership roles. The Software Engineer is a hands-on contributor responsible for delivering secure, maintainable, and performant software as part of a cross-functional Agile team. Working closely with Product, QA, DevOps, and fellow engineers, this role helps shape technical solutions and contributes to quality practices. Essential Skills & Experience * Strong Python Development Capability 3 years+ * Experienced with front-end frameworks (React.js and Next.js) * Experience with TypeScript * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Experience with responsive web design * Understanding of SEO strategies and security standards
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        Senior Software Engineer

        Gigaclear Ltd
        Abingdon, Oxfordshire
        £55,000 - £60,000 a year
        A role to put your Software Engineering problem solving skills to the test, translating complex technical concepts to cross-functional audiences. You will play a key role in delivering robust, secure, and scalable software systems. Working closely with Product, QA, and DevOps, you will balance hands-on development with architectural contribution, promote Agile best practices, and help raise the engineering bar through coaching, code quality, and continuous improvement initiatives. You will support the teams technical evolution while ensuring reliable product delivery aligned to business needs. * Strong Python Development Capability 5 years+ * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Passionate about building quality software * Experience of developing in Rust.
        A role to put your Software Engineering problem solving skills to the test, translating complex technical concepts to cross-functional audiences. You will play a key role in delivering robust, secure, and scalable software systems. Working closely with Product, QA, and DevOps, you will balance hands-on development with architectural contribution, promote Agile best practices, and help raise the engineering bar through coaching, code quality, and continuous improvement initiatives. You will support the teams technical evolution while ensuring reliable product delivery aligned to business needs. * Strong Python Development Capability 5 years+ * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Passionate about building quality software * Experience of developing in Rust.
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        Staff HR Technical Analyst

        Renesas Electronics Europe Ltd
        Swindon, Wiltshire
        Competitive
        Job Description - Renesas Electronics is looking for an experienced System Analyst to join our IT team, supporting our HR applications within the business. The role will work closely with wider IT and HR colleagues, as well as other internal and external stakeholders. You will assess needs, gather requirements, and support the creation of specifications for new and existing tools, and deliver on system and process improvements. * Administer and provide advanced technical support for SuccessFactors and other HR-related enterprise applications , ensuring alignment with IT and HRIS stakeholders. * Maintain, configure, and optimize HR systems within the broader enterprise IT infrastructure , ensuring scalability, performance, and integration with other business-critical platforms (e.g., payroll, identity management, reporting tools).
        Job Description - Renesas Electronics is looking for an experienced System Analyst to join our IT team, supporting our HR applications within the business. The role will work closely with wider IT and HR colleagues, as well as other internal and external stakeholders. You will assess needs, gather requirements, and support the creation of specifications for new and existing tools, and deliver on system and process improvements. * Administer and provide advanced technical support for SuccessFactors and other HR-related enterprise applications , ensuring alignment with IT and HRIS stakeholders. * Maintain, configure, and optimize HR systems within the broader enterprise IT infrastructure , ensuring scalability, performance, and integration with other business-critical platforms (e.g., payroll, identity management, reporting tools).
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        Excellent skills in designing and delivering integrations using Microsoft Azure PaaS (Functions, Logic Apps, API Management, Service Bus,) * Expertise in integration strategy, API management, and canonical data models.
        Excellent skills in designing and delivering integrations using Microsoft Azure PaaS (Functions, Logic Apps, API Management, Service Bus,) * Expertise in integration strategy, API management, and canonical data models.
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        The ideal candidate will have proven experience with Node.js and/or Java (v21+) for backend development, as well as a strong knowledge of microservices architecture and RESTful API design. - Familiarity with API Gateway platforms such as WSO2 or similar.
        The ideal candidate will have proven experience with Node.js and/or Java (v21+) for backend development, as well as a strong knowledge of microservices architecture and RESTful API design. - Familiarity with API Gateway platforms such as WSO2 or similar.
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        What is the average salary for API in Southampton?

        Average salary per year
        £52,499

        The average salary for a API in Southampton is £52,499. API in Southampton salaries range from £47,499 to £62,499.

        Frequently Asked Questions

        How many contract API jobs are there in Southampton?
        There are 1 contract API jobs within 20 miles of Southampton available on CWJobs right now.

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