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11 Permanent API jobs in Portsmouth + 20 miles
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Principal Software Engineer
Principal Software Engineer
Spectrum It Recruitment Limited
Southampton (SO14)
£70000.00 - £75000.00 per annum
Southampton (Onsite) * £75,000 + generous pension & benefits - Are you a Principal Engineer who thrives on solving real-world problems with cutting-edge technology? This is an opportunity to join a talented engineering team building advanced, real-time software systems used in safety-critical environments worldwide. You'll be working at the intersection of enterprise software, IoT, and data-driven decision-making; developing solutions that genuinely make a difference. Why this role is exciting - This isn't just another enterprise software role. You'll be working on a sophisticated platform that connects physical devices (IoT) with real-time data processing, delivering actionable insights through modern web applications. The systems you help build are deployed globally and play a vital role in protecting people, infrastructure, and national security.
Southampton (Onsite) * £75,000 + generous pension & benefits - Are you a Principal Engineer who thrives on solving real-world problems with cutting-edge technology? This is an opportunity to join a talented engineering team building advanced, real-time software systems used in safety-critical environments worldwide. You'll be working at the intersection of enterprise software, IoT, and data-driven decision-making; developing solutions that genuinely make a difference. Why this role is exciting - This isn't just another enterprise software role. You'll be working on a sophisticated platform that connects physical devices (IoT) with real-time data processing, delivering actionable insights through modern web applications. The systems you help build are deployed globally and play a vital role in protecting people, infrastructure, and national security.
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Full-Stack Web Software Engineer - React, ASP.NET & C#
Full-Stack Web Software Engineer - React, ASP.NET & C#
Computer Futures
Portsmouth, Hampshire, BBTE
£68000 - £87000 per annum + bonus
Working across the full stack, contributing to both UI and API development
Working across the full stack, contributing to both UI and API development
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Software Engineer (Azure Certified / C# .Net)
Software Engineer (Azure Certified / C# .Net)
Hays
Portsmouth (PO1)
£56000 - £61000 per annum + £56-61k
Depth of knowledge in Azure is crucial, extending to use of Azure Functions, App Services and API Management App services. You should have good experience building / integrating API's and pushing CI/CD pipelines using GIT in an Agile environment and will have a strong command of the entire SDLC.
Depth of knowledge in Azure is crucial, extending to use of Azure Functions, App Services and API Management App services. You should have good experience building / integrating API's and pushing CI/CD pipelines using GIT in an Agile environment and will have a strong command of the entire SDLC.
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Application Support Engineer
Application Support Engineer
Sterling Bridge Limited
Fareham (PO15)
From £25,000 to £30,000 per annum (Excellent Benefits)
Software Support | Technical Operations | API & System Integration * Hands-on exposure to modern software and API environments - If youre an Application Support Engineer looking to expand your experience in software and API support, click APPLY NOW, attach your FULL CV and contact details, and Ill be in touch ASAP.
Software Support | Technical Operations | API & System Integration * Hands-on exposure to modern software and API environments - If youre an Application Support Engineer looking to expand your experience in software and API support, click APPLY NOW, attach your FULL CV and contact details, and Ill be in touch ASAP.
Tech Ops Environment | Application Support | API & Software Exposure
Tech Ops Environment | Application Support | API & Software Exposure
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Gauging and sampling shore tanks in accordance with API, IP, company or other procedures.
Gauging and sampling shore tanks in accordance with API, IP, company or other procedures.
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Customer facing API's using web technologies
Customer facing API's using web technologies
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Web Services and API knowledge and understanding of conceptual use.
Web Services and API knowledge and understanding of conceptual use.
Introduction - Saab UK is part of Scandinavia's largest defence company, bringing together the best of Swedish and British innovation. Saab offers world-leading solutions and services in defence, aviation, space, and civil security to keep people and society safe. Our UK presence has been growing at pace, meaning we can offer a wide range of opportunities for personal fulfilment and career growth. We currently employ over 600 people across eight sites in the UK, and our specialisations include software engineering, underwater robotics, radars, AI, and armed forces training. This is an initial 6 month contract role within our UK IT Business Unit. The IT Solution Architect will be responsible for designing and implementing technology solutions that align with business objectives and technical requirements.
Introduction - Saab UK is part of Scandinavia's largest defence company, bringing together the best of Swedish and British innovation. Saab offers world-leading solutions and services in defence, aviation, space, and civil security to keep people and society safe. Our UK presence has been growing at pace, meaning we can offer a wide range of opportunities for personal fulfilment and career growth. We currently employ over 600 people across eight sites in the UK, and our specialisations include software engineering, underwater robotics, radars, AI, and armed forces training. This is an initial 6 month contract role within our UK IT Business Unit. The IT Solution Architect will be responsible for designing and implementing technology solutions that align with business objectives and technical requirements.
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Senior Software Engineer (Rust, Go, Typescript)
Senior Software Engineer (Rust, Go, Typescript)
JLA Resourcing Ltd
Southampton (SO15)
£70,000 to £80,000
Role – Senior Software Engineer (Rust, Go, Typescript) Location – Remote, occasional visits to Southampton office - Salary - £70,000 to £80,000 - Start – ASAP - The Opportunity - This is a chance to join an innovative technology business transforming how complex, safety-critical industries operate. The company is building cutting-edge solutions that combine augmented reality, AI, and computer vision to modernise traditional workflows and bring them into a fully digital, connected future. You’ll be joining a small, high-impact, remote-first team at a pivotal stage of growth, where engineering decisions directly shape the product and its success. With strong backing and growing enterprise demand, this is an opportunity to take real ownership, work across the full technology stack, and contribute to a product that blends software, hardware, and machine learning in a genuinely ...
Role – Senior Software Engineer (Rust, Go, Typescript) Location – Remote, occasional visits to Southampton office - Salary - £70,000 to £80,000 - Start – ASAP - The Opportunity - This is a chance to join an innovative technology business transforming how complex, safety-critical industries operate. The company is building cutting-edge solutions that combine augmented reality, AI, and computer vision to modernise traditional workflows and bring them into a fully digital, connected future. You’ll be joining a small, high-impact, remote-first team at a pivotal stage of growth, where engineering decisions directly shape the product and its success. With strong backing and growing enterprise demand, this is an opportunity to take real ownership, work across the full technology stack, and contribute to a product that blends software, hardware, and machine learning in a genuinely ...
.Net Software Developer - AI Product
.Net Software Developer - AI Product
Spectrum It Recruitment Limited
Fareham (PO14)
£45000 - £50000 per annum + generous benefits
3+ years commercial experience working with C#, ASP.Net Core, Web API, SQL, JavaScript
3+ years commercial experience working with C#, ASP.Net Core, Web API, SQL, JavaScript
84 exact matches jobs are outside your preferred location
Are you an experienced Software Engineer looking to work on cutting-edge technology? Do you enjoy problem solving, customer interactions and developing real-world solutions? Our client has won the Queens Award for innovation and is a leading supplier to global Air Traffic Control technology. Better still, they're a friendly team with a positive outlook and collaborative way of working. * We are looking for a Senior Software Engineer to play a key role in the development and maintenance of high-performance 3D display systems used within for Air Traffic Control simulation. * You'll be working on innovative display solutions, integrating emerging technologies such as Digital Towers and collaborating with suppliers to design and deliver state-of-the-art solutions. * This is a customer-facing role, so occasional travel will be required to support system demonstrations, ...
Are you an experienced Software Engineer looking to work on cutting-edge technology? Do you enjoy problem solving, customer interactions and developing real-world solutions? Our client has won the Queens Award for innovation and is a leading supplier to global Air Traffic Control technology. Better still, they're a friendly team with a positive outlook and collaborative way of working. * We are looking for a Senior Software Engineer to play a key role in the development and maintenance of high-performance 3D display systems used within for Air Traffic Control simulation. * You'll be working on innovative display solutions, integrating emerging technologies such as Digital Towers and collaborating with suppliers to design and deliver state-of-the-art solutions. * This is a customer-facing role, so occasional travel will be required to support system demonstrations, ...
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Senior Java Developer – AWS Cloud Backend
Senior Java Developer – AWS Cloud Backend
Intelligent Talent Solutions Ltd
Bracknell (RG12)
From £75,000 to £90,000 per annum Pension, staff discounts, medical
Experience building platforms supporting mobile or API-driven products
Experience building platforms supporting mobile or API-driven products
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Applications Support Analyst / Engineer
Applications Support Analyst / Engineer
Kudos Partners
Datchet Common, Slough (SL3), SL3
Up to £75,000 per annum plus 12% bonus - generous benefits package
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
Senior iOS Developer – Swift / Mobile Applications
Senior iOS Developer – Swift / Mobile Applications
Intelligent Talent Solutions Ltd
Bracknell (RG12)
From £70,000 to £90,000 per annum Pension, staff discounts, medical
Implement robust REST API integrations
Implement robust REST API integrations
Senior Android Developer – Kotlin / Mobile Applications
Senior Android Developer – Kotlin / Mobile Applications
Intelligent Talent Solutions Ltd
Bracknell (RG12)
From £68,000 to £88,000 per annum Pension, staff discounts, medical
Implement robust REST API integrations
Implement robust REST API integrations
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Senior Front End Engineer React & React Native
Senior Front End Engineer React & React Native
EFCI Group Ltd
Bracknell (RG12)
£70,000 per annum benefits
React & React Native Mastery: 5+ years of production-grade experience, with a deep understanding of state management (Zustand/Redux) and API integration.
React & React Native Mastery: 5+ years of production-grade experience, with a deep understanding of state management (Zustand/Redux) and API integration.
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Were seeking a talented Full Stack Engineer to help build and scale innovative web applications. If you enjoy working across the full stack and delivering high-performance solutions, this is your opportunity to make a real impact. Location: Reading (2 days a week) * Modern, responsive web applications using React & TypeScript. * Sleek UIs with Tailwind CSS and cutting-edge frontend architecture. * Backend services with Ruby on Rails (essential) or Node.js, integrated via RESTful APIs. * Robust data solutions with PostgreSQL or similar databases. * Scalable deployment pipelines on cloud platforms with full CI/CD workflows. * Automated testing across frontend and backend to ensure reliability and performance. * Optimized client-side performance for smooth user experiences. * Strong commercial experience with React & TypeScript. * Deep expertise in Ruby on Rails (essential).
Were seeking a talented Full Stack Engineer to help build and scale innovative web applications. If you enjoy working across the full stack and delivering high-performance solutions, this is your opportunity to make a real impact. Location: Reading (2 days a week) * Modern, responsive web applications using React & TypeScript. * Sleek UIs with Tailwind CSS and cutting-edge frontend architecture. * Backend services with Ruby on Rails (essential) or Node.js, integrated via RESTful APIs. * Robust data solutions with PostgreSQL or similar databases. * Scalable deployment pipelines on cloud platforms with full CI/CD workflows. * Automated testing across frontend and backend to ensure reliability and performance. * Optimized client-side performance for smooth user experiences. * Strong commercial experience with React & TypeScript. * Deep expertise in Ruby on Rails (essential).
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FixMyCar is currently working hard to grow the digitalisation of the UK aftermarket in the Automotive sector, by driving growth for Garages through smarter tools to increase efficiency and meet evolving consumer behaviour. With an exciting mission ahead, we are looking for a proactive Mid-Level NodeJS Engineer to build and evolve scalable backend services using Node.js and TypeScript, working closely across our small team to implement features that truly make an impact to our platform and product. The ideal candidate will love problem-solving, learning new tech, and ensuring high code quality standards at all times. In this hands-on role, they will flourish in an Agile environment and enjoy continuously improving how systems are built, deployed, and scaled. They are a key role in how FixMyCars software applications are developed and maintained. Key Responsibilities
FixMyCar is currently working hard to grow the digitalisation of the UK aftermarket in the Automotive sector, by driving growth for Garages through smarter tools to increase efficiency and meet evolving consumer behaviour. With an exciting mission ahead, we are looking for a proactive Mid-Level NodeJS Engineer to build and evolve scalable backend services using Node.js and TypeScript, working closely across our small team to implement features that truly make an impact to our platform and product. The ideal candidate will love problem-solving, learning new tech, and ensuring high code quality standards at all times. In this hands-on role, they will flourish in an Agile environment and enjoy continuously improving how systems are built, deployed, and scaled. They are a key role in how FixMyCars software applications are developed and maintained. Key Responsibilities
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Our client, a leader in the technology sector, is currently seeking a Senior SAP UI5/ABAP Developer to join their team on a permanent basis. This role provides an exciting opportunity to work with cutting-edge SAP technologies in a dynamic and agile environment. * Develop and enhance SAP applications using SAP ABAP OO and traditional SAP ABAP * Implement change management processes including transports and source code control with abapGit * Utilise ABAP OOP for user exits and enhancements * Perform dialog programming and report writing with ALV and ABAP lists * Implement complex integrations via OData services and REST APIs * Contribute to SAP UI5 development including controls, data binding, ODataModel, and JSONModel * Develop unit tests using ABAP Unit ensuring high-quality software delivery * Participate actively in Agile practices and ceremonies
Our client, a leader in the technology sector, is currently seeking a Senior SAP UI5/ABAP Developer to join their team on a permanent basis. This role provides an exciting opportunity to work with cutting-edge SAP technologies in a dynamic and agile environment. * Develop and enhance SAP applications using SAP ABAP OO and traditional SAP ABAP * Implement change management processes including transports and source code control with abapGit * Utilise ABAP OOP for user exits and enhancements * Perform dialog programming and report writing with ALV and ABAP lists * Implement complex integrations via OData services and REST APIs * Contribute to SAP UI5 development including controls, data binding, ODataModel, and JSONModel * Develop unit tests using ABAP Unit ensuring high-quality software delivery * Participate actively in Agile practices and ceremonies
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AI Solutions Consultant (Power Platform ? £55,000 - £65,000 + Exceptional Benefits (DOE) Full-Time | Remote (UK) | Microsoft Solutions Partner? What's on Offer * £55,000-£65,000 base salary (DOE) * £5k cash car allowance per annum * 9-day fortnight (every other Friday off) * Remote-first with access to Reading office & regional hubs * Private Medical (Vitality) + Medical Cash Plan * Income Protection & Life Assurance * 25-28 days holiday + birthday off * Buy/sell up to 10 days holiday * Pension (5.5% employer / 4% employee) * EV car scheme, Cycle to Work, Gym discounts * Dedicated training budget (including AI certifications) * Structured career path into AI & Copilot technologies * Quarterly reviews & progression support * Recognition schemes, bonuses & awards * Award-winning culture (Great Place to Work)?? The Role
AI Solutions Consultant (Power Platform ? £55,000 - £65,000 + Exceptional Benefits (DOE) Full-Time | Remote (UK) | Microsoft Solutions Partner? What's on Offer * £55,000-£65,000 base salary (DOE) * £5k cash car allowance per annum * 9-day fortnight (every other Friday off) * Remote-first with access to Reading office & regional hubs * Private Medical (Vitality) + Medical Cash Plan * Income Protection & Life Assurance * 25-28 days holiday + birthday off * Buy/sell up to 10 days holiday * Pension (5.5% employer / 4% employee) * EV car scheme, Cycle to Work, Gym discounts * Dedicated training budget (including AI certifications) * Structured career path into AI & Copilot technologies * Quarterly reviews & progression support * Recognition schemes, bonuses & awards * Award-winning culture (Great Place to Work)?? The Role
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Backend Developer
Backend Developer
Spectrum It Recruitment Limited
Romsey (SO51)
£45000 - £50000 per annum + plus hybrid working and benefits
Romsey, Hampshire (Hybrid - 3 days office / 2 remote, flexible) * £45,000 - £50,000 + Benefits * OOP, PHP, Laravel - My client build innovative SaaS solutions that help organisations monitor, manage, and optimise critical infrastructure. Following recent growth and their migration to AWS, they're investing heavily in modernising their platform and building new products. I'm now looking for a Backend Developer to join their agile team and play a key role in shaping the future of their technology. The Role - This is a hands-on backend role with real ownership. * Stabilising and improving existing Laravel-based systems * Designing and building new SaaS products using a modern tech stack - You'll act as the backend authority within a small, collaborative team, working closely with a Frontend Developer and Senior UX/UI Designer. What You'll Be Doing - Design & Development
Romsey, Hampshire (Hybrid - 3 days office / 2 remote, flexible) * £45,000 - £50,000 + Benefits * OOP, PHP, Laravel - My client build innovative SaaS solutions that help organisations monitor, manage, and optimise critical infrastructure. Following recent growth and their migration to AWS, they're investing heavily in modernising their platform and building new products. I'm now looking for a Backend Developer to join their agile team and play a key role in shaping the future of their technology. The Role - This is a hands-on backend role with real ownership. * Stabilising and improving existing Laravel-based systems * Designing and building new SaaS products using a modern tech stack - You'll act as the backend authority within a small, collaborative team, working closely with a Frontend Developer and Senior UX/UI Designer. What You'll Be Doing - Design & Development
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Role: Golang Engineer - Job Type:Permanent - Location: Burgess Hill (3 days onsite) The Role - As a Golang Engineer, you will be responsible for working as part of an agile team to deliver features with your focus being on designing and developing Golang based microservices/APIs. * Lead and implement best practices in the team such as consistent branching strategy, coding standards, BDD/TDD, CI/CD and DevOps * Involvement in every step of the software development life cycle, from design, development, testing release changes and troubleshoot whenever necessary. * Follow the Scrum Methodology, participating actively in sprint backlog refinement, sprint planning, stand-ups, sprint review and sprint retrospective. * Support other team members and teams with sharing your knowledge and implementing innovative solutions that can be used across platforms. Your Profile
Role: Golang Engineer - Job Type:Permanent - Location: Burgess Hill (3 days onsite) The Role - As a Golang Engineer, you will be responsible for working as part of an agile team to deliver features with your focus being on designing and developing Golang based microservices/APIs. * Lead and implement best practices in the team such as consistent branching strategy, coding standards, BDD/TDD, CI/CD and DevOps * Involvement in every step of the software development life cycle, from design, development, testing release changes and troubleshoot whenever necessary. * Follow the Scrum Methodology, participating actively in sprint backlog refinement, sprint planning, stand-ups, sprint review and sprint retrospective. * Support other team members and teams with sharing your knowledge and implementing innovative solutions that can be used across platforms. Your Profile
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This is a hands-on, commercially focused role for a pragmatic builder who wants to improve how a property management business operates. Working closely with operations and finance teams, you will develop a strong understanding of how processes function in practice, identify inefficiencies, and implement technical solutions that reduce manual work and increase data visibility. The role sits at the intersection of business and technology. Rather than focusing on large-scale consumer applications, the emphasis is on automation, integrations, reporting tools, and internal systems that directly enhance operational performance. Role Overview * Analyse and map business processes across property management and finance functions * Write Python scripts to automate repetitive administrative tasks * Build lightweight internal tools for reporting, tracking, and workflow management
This is a hands-on, commercially focused role for a pragmatic builder who wants to improve how a property management business operates. Working closely with operations and finance teams, you will develop a strong understanding of how processes function in practice, identify inefficiencies, and implement technical solutions that reduce manual work and increase data visibility. The role sits at the intersection of business and technology. Rather than focusing on large-scale consumer applications, the emphasis is on automation, integrations, reporting tools, and internal systems that directly enhance operational performance. Role Overview * Analyse and map business processes across property management and finance functions * Write Python scripts to automate repetitive administrative tasks * Build lightweight internal tools for reporting, tracking, and workflow management
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Job Title: Retailer Systems Project Consultant - Location: Hybrid, 2 days in the office (Farnborough) Salary: Competitive + Performance Bonus - Job type: Full time, Permanent - Working Hours: 40 Hours Per Week - Application Deadline: 3rd April 2026 - The Retailer Systems Project Consultant is responsible for supporting, coordinating, and delivering sales and CRM projects within our client's Network Digitalisation department. These projects will primarily focus on providing state of the art systems for the wider Retailer Network. This role ensures that initiatives are completed on time, within budget, and to the desired quality standards, whilst aligning with strategic business objectives. The Project Consultant will be actively involved in the planning, testing, execution and deployment of new retailer systems, upgrades, and technology rollouts, working collaboratively with ...
Job Title: Retailer Systems Project Consultant - Location: Hybrid, 2 days in the office (Farnborough) Salary: Competitive + Performance Bonus - Job type: Full time, Permanent - Working Hours: 40 Hours Per Week - Application Deadline: 3rd April 2026 - The Retailer Systems Project Consultant is responsible for supporting, coordinating, and delivering sales and CRM projects within our client's Network Digitalisation department. These projects will primarily focus on providing state of the art systems for the wider Retailer Network. This role ensures that initiatives are completed on time, within budget, and to the desired quality standards, whilst aligning with strategic business objectives. The Project Consultant will be actively involved in the planning, testing, execution and deployment of new retailer systems, upgrades, and technology rollouts, working collaboratively with ...
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