Date posted
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Locations
Locations
Salaries
Date posted
Type of Company
Job types
14 Contract API jobs in Portsmouth + 20 miles
363 exact matches jobs are outside your preferred location
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Experience in creating front end and API automated test projects
Experience in creating front end and API automated test projects
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Developer C#, .NET
Developer C#, .NET
Gold Group
East Grinstead (RH19)
£47500.00 - £52000.00 per annum + + benefits, Hybrid WFH
ASP.NET MVC4 / ASP.NET Core (MVC / API)
ASP.NET MVC4 / ASP.NET Core (MVC / API)
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AI Software Engineer, Firebase, GCP, COR7557B
AI Software Engineer, Firebase, GCP, COR7557B
Corriculo Ltd
Reading, Berkshire, RG1
£75k - 100k per year + Stock Options
Building on Firebase, using Claude API and leading LLMs, the AI Software Engineer will build the end-to-end architecture, security, performance and integration.
Building on Firebase, using Claude API and leading LLMs, the AI Software Engineer will build the end-to-end architecture, security, performance and integration.
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Build and manage secure API bridges to link platforms and allow them to share data efficiently.
Build and manage secure API bridges to link platforms and allow them to share data efficiently.
FEATURED
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API Design: REST, GraphQL, external integrations * AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling
API Design: REST, GraphQL, external integrations * AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling
API Design: REST, GraphQL, external integrations * AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling
API Design: REST, GraphQL, external integrations * AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling
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Lead Full Stack Ruby Developer
Lead Full Stack Ruby Developer
G.R.E. Recruitment Limited
Burgess Hill (RH15)
From £80,000 to £85,000 per annum
Tech Stack: Ruby on Rails, SQL, PostgreSQL, JavaScript, Turbolinks, ReactJS, NextJS, API's, AWS - Must have an understanding of the benefits and risks of adopting AI safely and effectively
Tech Stack: Ruby on Rails, SQL, PostgreSQL, JavaScript, Turbolinks, ReactJS, NextJS, API's, AWS - Must have an understanding of the benefits and risks of adopting AI safely and effectively
The business develops and operates a suite of high-traffic digital products, including web, mobile, and API-driven services used by millions of users globally.
The business develops and operates a suite of high-traffic digital products, including web, mobile, and API-driven services used by millions of users globally.
Build and maintain test automation frameworks covering UI, API, and service-level validation * Solid API and UI automation experience (e.g. Playwright, Cypress, or similar)
Build and maintain test automation frameworks covering UI, API, and service-level validation * Solid API and UI automation experience (e.g. Playwright, Cypress, or similar)
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QA Engineering Lead SaaS
QA Engineering Lead SaaS
Client Server
Underhill Park, Reigate (RH2), RH2
£100000 - £130000 per annum + bonus + benefits
You have experience with C# test automation frameworks at all levels (unit, integration, API/system)
You have experience with C# test automation frameworks at all levels (unit, integration, API/system)
NEWPREMIUM
AWS (EC2, container services, serverless, API Gateway)
AWS (EC2, container services, serverless, API Gateway)
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Senior Full Stack Engineer - Role Type: Permanent - Location: Maidenhead (Hybrid - 3 days a week) Here at Dignity Funerals, a purpose-driven organisation committed to supporting families at life's most important moments, we're looking for a Senior Full Stack Engineer to help shape and deliver the next generation of digital experiences. This is a role for a hands-on technical leader who thrives on solving complex challenges while elevating those around them. You'll play a key role in driving engineering excellence, mentoring others, and shaping the future of our tech landscape. What you'll be doing * Own & deliver complex, scalable solutions across the full stack * Drive technical direction - influence architecture, tooling, and long-term strategy * Code with impact - tackling ambiguous problems with high-quality, maintainable solutions
Senior Full Stack Engineer - Role Type: Permanent - Location: Maidenhead (Hybrid - 3 days a week) Here at Dignity Funerals, a purpose-driven organisation committed to supporting families at life's most important moments, we're looking for a Senior Full Stack Engineer to help shape and deliver the next generation of digital experiences. This is a role for a hands-on technical leader who thrives on solving complex challenges while elevating those around them. You'll play a key role in driving engineering excellence, mentoring others, and shaping the future of our tech landscape. What you'll be doing * Own & deliver complex, scalable solutions across the full stack * Drive technical direction - influence architecture, tooling, and long-term strategy * Code with impact - tackling ambiguous problems with high-quality, maintainable solutions
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Permanent - Location: Home / Andover (onsite 2 days a week) Salary: £100,000 - £120,000 (+ benefits) Skills: Technical Architecture, Azure/AWS, DevOps, Secure Development, Microservices, APIs, SC Clearance - We are looking to recruit an SC Cleared Technical Architect for a leading technology consultancy. This is a high-impact role, working across the full delivery lifecycle to design and deliver complex, secure, and scalable solutions aligned to business and technical strategy. Location: Andover (2 days per week onsite) Clearance: Active SC required - Key Responsibilities * Own the technical design of large and complex systems * Provide architecture governance and technical leadership across delivery teams * Collaborate with multi-disciplinary teams to ensure solutions meet business and technical needs * Define and apply architecture principles, standards and best practice
Permanent - Location: Home / Andover (onsite 2 days a week) Salary: £100,000 - £120,000 (+ benefits) Skills: Technical Architecture, Azure/AWS, DevOps, Secure Development, Microservices, APIs, SC Clearance - We are looking to recruit an SC Cleared Technical Architect for a leading technology consultancy. This is a high-impact role, working across the full delivery lifecycle to design and deliver complex, secure, and scalable solutions aligned to business and technical strategy. Location: Andover (2 days per week onsite) Clearance: Active SC required - Key Responsibilities * Own the technical design of large and complex systems * Provide architecture governance and technical leadership across delivery teams * Collaborate with multi-disciplinary teams to ensure solutions meet business and technical needs * Define and apply architecture principles, standards and best practice
NEW
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MERITUS are recruiting for an SC Cleared Technical Architect / Solution Architect to join our client delivering secure, large-scale technology programmes within the Defence and Central Government sector. As a Technical Architect, you will lead the design and assurance of complex, secure systems across major government programmes. You will ensure architectural integrity across the full delivery lifecycle, working closely with engineering, delivery, and security teams to design scalable, compliant, cloud-based solutions. * Lead technical design of large-scale, complex systems * Define and govern solution architecture and technical designs * Ensure alignment with security, performance, scalability, and compliance standards * Work closely with engineering, delivery, and business stakeholders * Provide technical governance, assurance, and risk evaluation
MERITUS are recruiting for an SC Cleared Technical Architect / Solution Architect to join our client delivering secure, large-scale technology programmes within the Defence and Central Government sector. As a Technical Architect, you will lead the design and assurance of complex, secure systems across major government programmes. You will ensure architectural integrity across the full delivery lifecycle, working closely with engineering, delivery, and security teams to design scalable, compliant, cloud-based solutions. * Lead technical design of large-scale, complex systems * Define and govern solution architecture and technical designs * Ensure alignment with security, performance, scalability, and compliance standards * Work closely with engineering, delivery, and business stakeholders * Provide technical governance, assurance, and risk evaluation
Permanent - Location: Home / Andover (onsite 2 days a week) Salary: £100,000 - £110,000 (+ benefits) Skills: Technical Architecture, Azure/AWS, DevOps, Secure Development, Microservices, APIs, SC Clearance - We are looking to recruit an SC Cleared Technical Architect for a leading technology consultancy. This is a high-impact role, working across the full delivery lifecycle to design and deliver complex, secure, and scalable solutions aligned to business and technical strategy. Location: Andover (2 days per week onsite) Clearance: Active SC required - Key Responsibilities * Own the technical design of large and complex systems * Provide architecture governance and technical leadership across delivery teams * Collaborate with multi-disciplinary teams to ensure solutions meet business and technical needs * Define and apply architecture principles, standards and best practice
Permanent - Location: Home / Andover (onsite 2 days a week) Salary: £100,000 - £110,000 (+ benefits) Skills: Technical Architecture, Azure/AWS, DevOps, Secure Development, Microservices, APIs, SC Clearance - We are looking to recruit an SC Cleared Technical Architect for a leading technology consultancy. This is a high-impact role, working across the full delivery lifecycle to design and deliver complex, secure, and scalable solutions aligned to business and technical strategy. Location: Andover (2 days per week onsite) Clearance: Active SC required - Key Responsibilities * Own the technical design of large and complex systems * Provide architecture governance and technical leadership across delivery teams * Collaborate with multi-disciplinary teams to ensure solutions meet business and technical needs * Define and apply architecture principles, standards and best practice
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Closing date: 23rd June 2026 - Location: RG7 4PR, located between Reading and Basingstoke, with free onsite parking. Package: £61,460 - £95,000 (depending on your suitability, qualifications, and level of experience) Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application. Ready to play your part? At AWE, it's not just a job, it's far more than that. Our shared purpose is to help keep the nation safe. Could this role be the opportunity for you to play your part? * Lead AWE's enterprise AI delivery, turning prototypes into secure, scalable AI solutions that drive innovation and efficiency across the organisation. * Lead a cross-functional AI engineering team, providing technical and team leadership for enterprise AI ...
Closing date: 23rd June 2026 - Location: RG7 4PR, located between Reading and Basingstoke, with free onsite parking. Package: £61,460 - £95,000 (depending on your suitability, qualifications, and level of experience) Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application. Ready to play your part? At AWE, it's not just a job, it's far more than that. Our shared purpose is to help keep the nation safe. Could this role be the opportunity for you to play your part? * Lead AWE's enterprise AI delivery, turning prototypes into secure, scalable AI solutions that drive innovation and efficiency across the organisation. * Lead a cross-functional AI engineering team, providing technical and team leadership for enterprise AI ...
FEATURED
Description - Join us, be part of more. We're so much more than an energy company. We're a family of brands revolutionising how we power the planet. We're energisers. One team of 21,000 colleagues that's energising a greener, fairer future by creating an energy system that doesn't rely on fossil fuels, whilst living our powerful commitment to igniting positive change in our communities. Here, you can find more purpose, more passion, and more potential. That's why working here is #MoreThanACareer. We do energy differently - we do it all. We make it, store it, move it, sell it, and mend it. Centrica, Technology is a core driver of how we deliver our strategy. You'll join a team modernising our platforms, strengthening cyber and operational resilience, and advancing a product-led way of working that brings engineers, data specialists and business experts together to deliver ...
Description - Join us, be part of more. We're so much more than an energy company. We're a family of brands revolutionising how we power the planet. We're energisers. One team of 21,000 colleagues that's energising a greener, fairer future by creating an energy system that doesn't rely on fossil fuels, whilst living our powerful commitment to igniting positive change in our communities. Here, you can find more purpose, more passion, and more potential. That's why working here is #MoreThanACareer. We do energy differently - we do it all. We make it, store it, move it, sell it, and mend it. Centrica, Technology is a core driver of how we deliver our strategy. You'll join a team modernising our platforms, strengthening cyber and operational resilience, and advancing a product-led way of working that brings engineers, data specialists and business experts together to deliver ...
PREMIUM
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Senior AI Engineer (LLMs, Python & Java)
Senior AI Engineer (LLMs, Python & Java)
Halian Technology Limited
Bracknell (RG12)
£95,000 per annum Bonus and benefits
Bracknell (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
Bracknell (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
Reading (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
Reading (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
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Distinguished Technologist – Pre-Sales AI and Data Center Networking
Distinguished Technologist – Pre-Sales AI and Data Center Networking
Hewlett Packard Enterprise
Winnersh, Wokingham (RG41)
Competitive
Description - Distinguished Technologist Pre-Sales AI & Data Center Networking This role has been designed as Hybrid with an expectation that you will work on average 2 days per week from an HPE office. Hewlett Packard Enterprise is the global edge-to-cloud company advancing the way people live and work. We help companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive in todays complex world. Our culture thrives on finding new and better ways to accelerate whats next. We know varied backgrounds are valued and succeed here. We have the flexibility to manage our work and personal needs. We make bold moves, together, and are a force for good. If you are looking to stretch and grow your career our culture will embrace you. Open up opportunities with HPE.
Description - Distinguished Technologist Pre-Sales AI & Data Center Networking This role has been designed as Hybrid with an expectation that you will work on average 2 days per week from an HPE office. Hewlett Packard Enterprise is the global edge-to-cloud company advancing the way people live and work. We help companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive in todays complex world. Our culture thrives on finding new and better ways to accelerate whats next. We know varied backgrounds are valued and succeed here. We have the flexibility to manage our work and personal needs. We make bold moves, together, and are a force for good. If you are looking to stretch and grow your career our culture will embrace you. Open up opportunities with HPE.
Software Engineer
Software Engineer
Halian Technology Limited
New Town, Reading (RG1), RG1 3BE
From £55,000 to £90,000 per annum Bonus, Pension, Private Healthcare,
JOB Software Engineer - LOCATION Reading (Hybrid) TERM Permanent - SALARY £55,000 to £90,000 per annum - BENEFITS Bonus, Pension, Private Healthcare, Hybrid Working, Flexi-time, Learning & Development Budget, AI Training & Certifications etc. We are a forward-thinking technology organisation driving innovation through artificial intelligence and modern software engineering. As part of our continued growth, we are expanding our engineering team with the addition of an experienced AI Software Developer. We are looking to hire an AI Software Developer to design, build, and deploy intelligent applications and systems, leveraging modern AI frameworks and technologies from our Reading office on a hybrid basis. Strong experience in software development with a focus on AI/ML applications - A degree qualification (BSc, MSc, PhD etc.) in Computer Science, Artificial Intelligence, Software ...
JOB Software Engineer - LOCATION Reading (Hybrid) TERM Permanent - SALARY £55,000 to £90,000 per annum - BENEFITS Bonus, Pension, Private Healthcare, Hybrid Working, Flexi-time, Learning & Development Budget, AI Training & Certifications etc. We are a forward-thinking technology organisation driving innovation through artificial intelligence and modern software engineering. As part of our continued growth, we are expanding our engineering team with the addition of an experienced AI Software Developer. We are looking to hire an AI Software Developer to design, build, and deploy intelligent applications and systems, leveraging modern AI frameworks and technologies from our Reading office on a hybrid basis. Strong experience in software development with a focus on AI/ML applications - A degree qualification (BSc, MSc, PhD etc.) in Computer Science, Artificial Intelligence, Software ...
Senior Software Engineer - Location: Near Winchester - Salary: Up to £65,000 - Clearance: Must hold SC Clearance and be eligible for DV - To Apply: Email - Overview - A leading technology organisation within the defence and national security sector is seeking a Senior Software Engineer to join a growing engineering team near Winchester. This is an opportunity to work on secure, mission-critical systems using modern cloud-native technologies within a collaborative and highly technical environment. The team delivers innovative software solutions across complex programmes supporting national security and defence operations. Key Responsibilities * Design, develop, and maintain scalable software solutions * Collaborate within Agile engineering teams to deliver high-quality products * Build and support cloud-native applications and infrastructure
Senior Software Engineer - Location: Near Winchester - Salary: Up to £65,000 - Clearance: Must hold SC Clearance and be eligible for DV - To Apply: Email - Overview - A leading technology organisation within the defence and national security sector is seeking a Senior Software Engineer to join a growing engineering team near Winchester. This is an opportunity to work on secure, mission-critical systems using modern cloud-native technologies within a collaborative and highly technical environment. The team delivers innovative software solutions across complex programmes supporting national security and defence operations. Key Responsibilities * Design, develop, and maintain scalable software solutions * Collaborate within Agile engineering teams to deliver high-quality products * Build and support cloud-native applications and infrastructure
Reading (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
Reading (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
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Location: Horsham (Hybrid) Salary: Up to £40,000 DOE *MUST HAVE VALID RIGHT TO WORK IN UK WITHOUT EVER NEEDING SPONSORSHIP* Our client is a well-established technology business with a strong reputation for delivering innovative software and digital solutions across a diverse customer base. Due to continued growth and investment in internal systems, they are looking to appoint a Software Business Analyst to support a range of business-critical projects. This is an excellent opportunity to join a collaborative and fast-paced SME environment where you'll play a key role in bridging the gap between business operations and technical delivery teams. The Role - As a Software Business Analyst, you'll work closely with stakeholders across the business to understand requirements, improve processes, and support the successful delivery of software and systems projects.
Location: Horsham (Hybrid) Salary: Up to £40,000 DOE *MUST HAVE VALID RIGHT TO WORK IN UK WITHOUT EVER NEEDING SPONSORSHIP* Our client is a well-established technology business with a strong reputation for delivering innovative software and digital solutions across a diverse customer base. Due to continued growth and investment in internal systems, they are looking to appoint a Software Business Analyst to support a range of business-critical projects. This is an excellent opportunity to join a collaborative and fast-paced SME environment where you'll play a key role in bridging the gap between business operations and technical delivery teams. The Role - As a Software Business Analyst, you'll work closely with stakeholders across the business to understand requirements, improve processes, and support the successful delivery of software and systems projects.
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Server Infrastructure Engineer
Server Infrastructure Engineer
CBSbutler Holdings Limited
Blandford Forum (DT11)
£550 - £600 per day + Outside IR35
+9 months + +On site in Blandford +SC cleared role +Outside IR35 +£550 - £600 a day - We are seeking a skilled and motivated Server Infrastructure Engineer to support the management, maintenance, and assurance of secure testbed environments that enable critical digital development, integration, and innovation activities within the Defence sector. Working as part of a specialist engineering team, you will be responsible for maintaining both on-premise and cloud-hosted infrastructure environments, ensuring secure, reliable, and continuous support for development activities, testing, exercises, and emerging AI capabilities. This is an exciting opportunity for an infrastructure professional with Defence CIS experience who enjoys working across server technologies, cloud platforms, virtualisation, networking, and cyber security. Key Responsibilities
+9 months + +On site in Blandford +SC cleared role +Outside IR35 +£550 - £600 a day - We are seeking a skilled and motivated Server Infrastructure Engineer to support the management, maintenance, and assurance of secure testbed environments that enable critical digital development, integration, and innovation activities within the Defence sector. Working as part of a specialist engineering team, you will be responsible for maintaining both on-premise and cloud-hosted infrastructure environments, ensuring secure, reliable, and continuous support for development activities, testing, exercises, and emerging AI capabilities. This is an exciting opportunity for an infrastructure professional with Defence CIS experience who enjoys working across server technologies, cloud platforms, virtualisation, networking, and cyber security. Key Responsibilities