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9 API jobs in Fawley, Southampton + 20 miles
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Senior Software Developer
Senior Software Developer
Spectrum It Recruitment Limited
Southampton (SO14)
£65000 - £70000 per annum + Bonus & Benefits
Experience creating RESTful APIs and ensuring API extensibility
Experience creating RESTful APIs and ensuring API extensibility
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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.
PREMIUM
Backend API development, ideally with Express, Nest.js or similar
Backend API development, ideally with Express, Nest.js or similar
NEW
Application Support Engineer
Application Support Engineer
Spectrum It Recruitment Limited
Fareham (PO14)
£30000 - £35000 per annum + Benefits
Hybrid Working - Fareham, Hampshire £30,000 - £35,000 - We're looking for a driven Application Support Engineer to join my client and help deliver exceptional support for business-critical applications. If you enjoy problem-solving, working with clients, and collaborating with developers to deliver real solutions-this could be the role for you. What You'll Be Doing * Providing technical support and resolving application issues within agreed SLAs * Troubleshooting and managing client tickets from start to resolution * Working closely with stakeholders, analysts, and developers * Communicating clearly with clients and delivering excellent customer service * Gathering requirements for system changes (RFCs) and supporting their delivery * Testing, documenting, and supporting application updates * Assisting with debugging and implementing improvements (training provided)
Hybrid Working - Fareham, Hampshire £30,000 - £35,000 - We're looking for a driven Application Support Engineer to join my client and help deliver exceptional support for business-critical applications. If you enjoy problem-solving, working with clients, and collaborating with developers to deliver real solutions-this could be the role for you. What You'll Be Doing * Providing technical support and resolving application issues within agreed SLAs * Troubleshooting and managing client tickets from start to resolution * Working closely with stakeholders, analysts, and developers * Communicating clearly with clients and delivering excellent customer service * Gathering requirements for system changes (RFCs) and supporting their delivery * Testing, documenting, and supporting application updates * Assisting with debugging and implementing improvements (training provided)
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QA Engineer (Junior-Mid Level) Location: Fareham, Hampshire (Full-Time, On-Site) Salary: £30,000 - £40,000 - I'm partnering with a fast-growing pet-tech business building smart, connected products used by hundreds of thousands of pet owners globally. As they scale, they're looking to hire a QA Engineer to play a key role in ensuring the quality and reliability of their products. The Opportunity - This role is well-suited to a junior to mid-level QA Engineer looking to develop in a product-focused environment. You'll work across mobile (Flutter), web applications, and internal tools, with a strong emphasis on manual testing and a clear pathway into automation or development. You'll collaborate closely with engineering and design teams, contributing directly to the quality of features before they reach end users. Key Responsibilities
QA Engineer (Junior-Mid Level) Location: Fareham, Hampshire (Full-Time, On-Site) Salary: £30,000 - £40,000 - I'm partnering with a fast-growing pet-tech business building smart, connected products used by hundreds of thousands of pet owners globally. As they scale, they're looking to hire a QA Engineer to play a key role in ensuring the quality and reliability of their products. The Opportunity - This role is well-suited to a junior to mid-level QA Engineer looking to develop in a product-focused environment. You'll work across mobile (Flutter), web applications, and internal tools, with a strong emphasis on manual testing and a clear pathway into automation or development. You'll collaborate closely with engineering and design teams, contributing directly to the quality of features before they reach end users. Key Responsibilities
Principal Software Engineer - Python
Principal Software Engineer - Python
Parent TEST TJ Company 1
Chandler's Ford, Eastleigh (SO53), SO53 3QB
65000
Title:Principal Software Engineer Python - Department:Procode IT - Location:Hybrid Commutable distance of either Chandlers Ford or Oxford - Salary:Circa £65k +DiscretionaryBonus Scheme - Sponsorship:Unfortunately, we are unable to offer sponsorship for this role - Ifyou'rea Principal Software Engineer, who enjoys architecting complex systems, owning technical decisions, and crafting Python-powered solutions that make a real impact to customers, then this might be the role for you! Step into a role where your technical vision truly shapes the future! About us - We are a leading UK technology company delivering transformative, data driven solutions for the energy sector and beyond. With two decades of experience, we help organisations unlock the power of smart data to improve efficiency, reduce cost to serve, and enhance customer experience.
Title:Principal Software Engineer Python - Department:Procode IT - Location:Hybrid Commutable distance of either Chandlers Ford or Oxford - Salary:Circa £65k +DiscretionaryBonus Scheme - Sponsorship:Unfortunately, we are unable to offer sponsorship for this role - Ifyou'rea Principal Software Engineer, who enjoys architecting complex systems, owning technical decisions, and crafting Python-powered solutions that make a real impact to customers, then this might be the role for you! Step into a role where your technical vision truly shapes the future! About us - We are a leading UK technology company delivering transformative, data driven solutions for the energy sector and beyond. With two decades of experience, we help organisations unlock the power of smart data to improve efficiency, reduce cost to serve, and enhance customer experience.
NEW
Our client, a leading technology company in the Defence & Security sector, is currently seeking a talented Research & Development Software Engineer to join their innovative team on a permanent basis. This role is based at Portsdown Technology Park in Portsmouth and offers the exciting opportunity to work on cutting-edge immersive training solutions and simulations. * Build and maintain prototypes, proof-of-concept systems, and technical demonstrators * Take early-stage feasibility prototypes forward into working implementations, validating technical assumptions and documenting findings * Implement integrations between AI services, APIs, backend systems, XR applications, simulation environments, and third-party platforms * Develop microservices, wrappers, connectors, and service interfaces to support solution components
Our client, a leading technology company in the Defence & Security sector, is currently seeking a talented Research & Development Software Engineer to join their innovative team on a permanent basis. This role is based at Portsdown Technology Park in Portsmouth and offers the exciting opportunity to work on cutting-edge immersive training solutions and simulations. * Build and maintain prototypes, proof-of-concept systems, and technical demonstrators * Take early-stage feasibility prototypes forward into working implementations, validating technical assumptions and documenting findings * Implement integrations between AI services, APIs, backend systems, XR applications, simulation environments, and third-party platforms * Develop microservices, wrappers, connectors, and service interfaces to support solution components
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You will have extensive experience across user acceptance testing, regression, end-to-end and API testing, as well as working with data at a SQL level where required.
You will have extensive experience across user acceptance testing, regression, end-to-end and API testing, as well as working with data at a SQL level where required.
Supporting the JAVA platform and having a full understanding of all the integrations that interact with the platform will be key to this role, so having good experience with integrated platforms (Headless/API) is essential. * Developing Integrated solutions (API, Web Services)
Supporting the JAVA platform and having a full understanding of all the integrations that interact with the platform will be key to this role, so having good experience with integrated platforms (Headless/API) is essential. * Developing Integrated solutions (API, Web Services)
141 exact matches jobs are outside your preferred location
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Connectivity: Design PL/SQL interfaces to handle RESTful API operations.
Connectivity: Design PL/SQL interfaces to handle RESTful API operations.
FEATURED
Experience with REST API design and MCP integration patterns
Experience with REST API design and MCP integration patterns
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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.
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
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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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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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
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MS Dynamics Developer
MS Dynamics Developer
Certain Advantage
South Farnborough, Farnborough (GU14), GU14 6TF
£30 - £38.25 per hour
MS Dynamics 365 Developer - Certain Advantage is hiring for an MS Dynamics 365 Developer based in the Farnborough area. This role is on a contract basis and is hybrid-based. The Company - Were working with a Manufacturing business that operates in the Aerospace sector. They design, manufacture and deliver industry-leading commercial aircraft, and a separate Space and Defence division. Does this sound like your next career move? If youre ambitious to grow, this may be your next role? This role is for an MS Dynamics 365 Developersomeone ambitious and ready to make an impact. Youll be results-oriented and driven to succeed. * Design and develop customisations, plugins, workflows, and integrations within the D365 environment. * Customise and extend D365 modules using X++, C#, JavaScript, Power Automate, and Power Apps.
MS Dynamics 365 Developer - Certain Advantage is hiring for an MS Dynamics 365 Developer based in the Farnborough area. This role is on a contract basis and is hybrid-based. The Company - Were working with a Manufacturing business that operates in the Aerospace sector. They design, manufacture and deliver industry-leading commercial aircraft, and a separate Space and Defence division. Does this sound like your next career move? If youre ambitious to grow, this may be your next role? This role is for an MS Dynamics 365 Developersomeone ambitious and ready to make an impact. Youll be results-oriented and driven to succeed. * Design and develop customisations, plugins, workflows, and integrations within the D365 environment. * Customise and extend D365 modules using X++, C#, JavaScript, Power Automate, and Power Apps.
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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