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2 Contract API jobs in Fawley, Southampton + 20 miles
54 exact matches jobs are outside your preferred location
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Contract Solution Architect SaaS / Integration / Identity - Midlands (Hybrid Working) Up to £750 per day (Inside IR35) 6-Month Initial Contract | Immediate Start - Active SC Clearance Required - We are supporting a globally recognised engineering and technology organisation operating at the forefront of advanced aerospace, defence, and power systems. They are seeking an experienced Solution Architect to support a major enterprise SaaS platform programme within a highly secure environment. This role will be instrumental in designing end-to-end architectures and ensuring new platforms integrate securely and effectively within a complex enterprise landscape. As a Solution Architect, you will assess the current technology landscape and produce high-level architectural designs that enable secure and scalable SaaS platform implementations.
Contract Solution Architect SaaS / Integration / Identity - Midlands (Hybrid Working) Up to £750 per day (Inside IR35) 6-Month Initial Contract | Immediate Start - Active SC Clearance Required - We are supporting a globally recognised engineering and technology organisation operating at the forefront of advanced aerospace, defence, and power systems. They are seeking an experienced Solution Architect to support a major enterprise SaaS platform programme within a highly secure environment. This role will be instrumental in designing end-to-end architectures and ensuring new platforms integrate securely and effectively within a complex enterprise landscape. As a Solution Architect, you will assess the current technology landscape and produce high-level architectural designs that enable secure and scalable SaaS platform implementations.
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Senior Full Stack Engineer (Python Focused) Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Senior Full Stack Engineer (Python Focused) Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Senior Full Stack Engineer - Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Senior Full Stack Engineer - Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
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Location: UK / Remote / Hybrid - Contract Type: Contract / Interim - About the Role - We are seeking Developers across multiple specialisms to join multidisciplinary digital teams within central government. You will help design, build and support high-quality, user-centred digital services delivered in line with GDS and modern engineering practices. Key Responsibilities * Build, test, deploy and iterate secure digital services across discovery, alpha, beta and live phases. * Collaborate closely with designers, user researchers, content designers, product managers and delivery teams to create user-centred solutions. * Apply government-wide accessibility and inclusive design standards to ensure services work for all users. * Support live service operations, including monitoring, troubleshooting and continual improvement.
Location: UK / Remote / Hybrid - Contract Type: Contract / Interim - About the Role - We are seeking Developers across multiple specialisms to join multidisciplinary digital teams within central government. You will help design, build and support high-quality, user-centred digital services delivered in line with GDS and modern engineering practices. Key Responsibilities * Build, test, deploy and iterate secure digital services across discovery, alpha, beta and live phases. * Collaborate closely with designers, user researchers, content designers, product managers and delivery teams to create user-centred solutions. * Apply government-wide accessibility and inclusive design standards to ensure services work for all users. * Support live service operations, including monitoring, troubleshooting and continual improvement.
PREMIUM
Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
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Location: Remote - Duration: 12 months with possible extension - Rate: Up to £550 per day via an approved umbrella company - Must be willing and eligible to go through the SC Clearance process - Our client, a reputable organisation in the IT sector, is hiring for a skilled SC Cleared Salesforce Developer to join a dynamic team on a 12-month contract, with the possibility of extension. This is an excellent opportunity to work on high-profile projects remotely, supporting critical infrastructure. * Developing and customising Salesforce solutions using Apex, Visualforce, and Lightning Components. * Designing and implementing Salesforce architecture, including data models, workflows, and business processes. * Configuring Salesforce environments, including setup, integrations, and customisations. * Troubleshooting complex technical issues and debugging code to ensure optimal performance.
Location: Remote - Duration: 12 months with possible extension - Rate: Up to £550 per day via an approved umbrella company - Must be willing and eligible to go through the SC Clearance process - Our client, a reputable organisation in the IT sector, is hiring for a skilled SC Cleared Salesforce Developer to join a dynamic team on a 12-month contract, with the possibility of extension. This is an excellent opportunity to work on high-profile projects remotely, supporting critical infrastructure. * Developing and customising Salesforce solutions using Apex, Visualforce, and Lightning Components. * Designing and implementing Salesforce architecture, including data models, workflows, and business processes. * Configuring Salesforce environments, including setup, integrations, and customisations. * Troubleshooting complex technical issues and debugging code to ensure optimal performance.
FEATURED
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Were looking for an experienced AI Engineer to build and scale GenAI-powered document intelligence systems on GCP. What Youll Do * Build LLM-driven document intelligence using Gemini on Vertex AI, including advanced prompt engineering and model orchestration. * Extract and normalise data from legal documents (tables, clauses, signatures, covenants, payment waterfalls). * Automate checklist-based analysis with strong validation and citation logic (No Page, No Claim). * Design robust evaluation frameworks (accuracy, bias, drift) with human-in-the-loop review. * Deliver production APIs (REST/gRPC) and high-throughput ingestion pipelines. * Create multimodal ingestion workflows for PDFs, scans, images, Excel and emails with OCR. Tech Stack * GCP: Vertex AI, Cloud Run, Pub/Sub, Dataflow * LLMs: Gemini, LangChain / LlamaIndex * Languages: Python (primary), TypeScript
Were looking for an experienced AI Engineer to build and scale GenAI-powered document intelligence systems on GCP. What Youll Do * Build LLM-driven document intelligence using Gemini on Vertex AI, including advanced prompt engineering and model orchestration. * Extract and normalise data from legal documents (tables, clauses, signatures, covenants, payment waterfalls). * Automate checklist-based analysis with strong validation and citation logic (No Page, No Claim). * Design robust evaluation frameworks (accuracy, bias, drift) with human-in-the-loop review. * Deliver production APIs (REST/gRPC) and high-throughput ingestion pipelines. * Create multimodal ingestion workflows for PDFs, scans, images, Excel and emails with OCR. Tech Stack * GCP: Vertex AI, Cloud Run, Pub/Sub, Dataflow * LLMs: Gemini, LangChain / LlamaIndex * Languages: Python (primary), TypeScript
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Location: Remote (UK / Europe) Rate: £400 £500 per day (Outside IR35) Duration: 6 Months - Start Date: ASAP - Company: 167 Solutions Ltd (on behalf of a global client) Overview - 167 Solutions Ltd is hiring a Salesforce Developer (Contract) to support a large-scale Salesforce transformation programme. This is a fully remote opportunity working within an enterprise environment across multiple Salesforce Clouds. Key Responsibilities * Design, develop and implement Salesforce solutions using Apex and Lightning Web Components (LWC) * Customise Salesforce across Sales Cloud, Service Cloud and Experience Cloud * Build and maintain integrations using REST/SOAP APIs * Work closely with Architects, Consultants and stakeholders to deliver scalable solutions * Support data migration, data modelling and system optimisation * Follow Salesforce best practices, CI/CD and deployment processes
Location: Remote (UK / Europe) Rate: £400 £500 per day (Outside IR35) Duration: 6 Months - Start Date: ASAP - Company: 167 Solutions Ltd (on behalf of a global client) Overview - 167 Solutions Ltd is hiring a Salesforce Developer (Contract) to support a large-scale Salesforce transformation programme. This is a fully remote opportunity working within an enterprise environment across multiple Salesforce Clouds. Key Responsibilities * Design, develop and implement Salesforce solutions using Apex and Lightning Web Components (LWC) * Customise Salesforce across Sales Cloud, Service Cloud and Experience Cloud * Build and maintain integrations using REST/SOAP APIs * Work closely with Architects, Consultants and stakeholders to deliver scalable solutions * Support data migration, data modelling and system optimisation * Follow Salesforce best practices, CI/CD and deployment processes
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Scala Developer – 12-Month Contract (Outside IR35)
Scala Developer – 12-Month Contract (Outside IR35)
Stealth IT Consulting Limited
UK
£450 per day £450 per day (Outside IR35)
£450 per day Fully Remote (UK-based) Occasional Out-of-Hours Work Required Im supporting a long-term programme looking for an experienced Scala Developer to join a high-performing engineering team on a 12-month Outside IR35 contract. * Strong commercial experience with Scala * Experience building high-quality, scalable backend services * Exposure to microservices, REST APIs, functional programming * Strong understanding of CI/CD and modern engineering practices * Cloud experience (AWS ideally) * Able to support occasional out-of-hours work when required?? * £450/day (Outside IR35) * 12 months * Remote * Immediate interviews & quick onboarding If youre available and interested, drop me a message or send over your CV.
£450 per day Fully Remote (UK-based) Occasional Out-of-Hours Work Required Im supporting a long-term programme looking for an experienced Scala Developer to join a high-performing engineering team on a 12-month Outside IR35 contract. * Strong commercial experience with Scala * Experience building high-quality, scalable backend services * Exposure to microservices, REST APIs, functional programming * Strong understanding of CI/CD and modern engineering practices * Cloud experience (AWS ideally) * Able to support occasional out-of-hours work when required?? * £450/day (Outside IR35) * 12 months * Remote * Immediate interviews & quick onboarding If youre available and interested, drop me a message or send over your CV.
FEATURED
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Rest API Integration
Rest API Integration
Focus on API management and 3GPP protocols . * Experience with RESTful API design, documentation, development, testing, and debugging.
Focus on API management and 3GPP protocols . * Experience with RESTful API design, documentation, development, testing, and debugging.
API-focused testing * Design and execute manual API tests using tools such as Postman, curl, or similar. * Chain API calls to simulate realistic workflows and ensure correct behaviour independent of the UI. * Identify gaps in API behaviour, validation, and documentation based on real-world usage patterns. * Participate in refinement, planning, and design discussions to surface testability and quality concerns early, particularly around API contracts and UI/API interactions. * Collaborate with engineers to clarify expected behaviour, edge cases, and acceptance criteria for both UI and API changes. * Translate requirements, user flows, and API specifications into structured test conditions and scenarios. * Reproduce, investigate, and document issues with clear steps, including failing UI flows and/or API requests and responses. * Verify fixes at both the API and UI layer, checking for ...
API-focused testing * Design and execute manual API tests using tools such as Postman, curl, or similar. * Chain API calls to simulate realistic workflows and ensure correct behaviour independent of the UI. * Identify gaps in API behaviour, validation, and documentation based on real-world usage patterns. * Participate in refinement, planning, and design discussions to surface testability and quality concerns early, particularly around API contracts and UI/API interactions. * Collaborate with engineers to clarify expected behaviour, edge cases, and acceptance criteria for both UI and API changes. * Translate requirements, user flows, and API specifications into structured test conditions and scenarios. * Reproduce, investigate, and document issues with clear steps, including failing UI flows and/or API requests and responses. * Verify fixes at both the API and UI layer, checking for ...
Knowledge and experience in modern API-driven web architectures.
Knowledge and experience in modern API-driven web architectures.
Troubleshoot API connections, reviewing payloads, authentication, and performance to maintain stability.
Troubleshoot API connections, reviewing payloads, authentication, and performance to maintain stability.
Expertise in cloud-native architectures, API strategies, data platforms, and integration patterns.
Expertise in cloud-native architectures, API strategies, data platforms, and integration patterns.
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API-First
API-First
Fortune 500 clients trust eGain AI knowledge solution to improve customer experience and reduce cost of service. Top rated by Gartner, eGain AI Knowledge Hub orchestrates AI and experts to deliver trusted answers to customers, agents, and field staff. We dream big and sweat details. We are diverse, optimistic, and tenacious. We take pride in what we do but we dont take ourselves too seriously. If work is fun for you, talk to us. We will not waste your time. Responsibilities * Discover client requirements and pain points to propose and configure tailored solutions. * Architect AI Knowledge Solutions leveraging eGain product capabilities and architecture in the context of the clients tech stack. * Develop and present technical proposals and sharp RFP responses. Education and Experience * 7 years of experience in developing AI based solutions for customer service/Contact Centers
Fortune 500 clients trust eGain AI knowledge solution to improve customer experience and reduce cost of service. Top rated by Gartner, eGain AI Knowledge Hub orchestrates AI and experts to deliver trusted answers to customers, agents, and field staff. We dream big and sweat details. We are diverse, optimistic, and tenacious. We take pride in what we do but we dont take ourselves too seriously. If work is fun for you, talk to us. We will not waste your time. Responsibilities * Discover client requirements and pain points to propose and configure tailored solutions. * Architect AI Knowledge Solutions leveraging eGain product capabilities and architecture in the context of the clients tech stack. * Develop and present technical proposals and sharp RFP responses. Education and Experience * 7 years of experience in developing AI based solutions for customer service/Contact Centers
Interprets complex technical client issues including API support.
Interprets complex technical client issues including API support.
Experience with using Postman or other API platform UI tools a plus
Experience with using Postman or other API platform UI tools a plus
Menlo Security's mission is enabling the world to connect, communicate and collaborate securely without compromise. COVID-19 has made our mission all the more real. We support customers across various enterprises including Fortune 500 companies, 9/10 of the largest global banks and the Department of Defense. The world has fundamentally changed. We are growing from 400 employees into the next phase of our journey, and we need passionate talent filled with empathy and agility. The right candidate for the job is ethical, hyper-organized, fanatical about seeing things through to completion, service-oriented, and humble enough to take feedback and coaching yet confident enough to provide feedback and coaching. Menlo is well-funded for growth and our investors are second to none. They include Vista Equity Partners (Vista), General Catalyst, JPMC, American Express, HSBC, and ...
Menlo Security's mission is enabling the world to connect, communicate and collaborate securely without compromise. COVID-19 has made our mission all the more real. We support customers across various enterprises including Fortune 500 companies, 9/10 of the largest global banks and the Department of Defense. The world has fundamentally changed. We are growing from 400 employees into the next phase of our journey, and we need passionate talent filled with empathy and agility. The right candidate for the job is ethical, hyper-organized, fanatical about seeing things through to completion, service-oriented, and humble enough to take feedback and coaching yet confident enough to provide feedback and coaching. Menlo is well-funded for growth and our investors are second to none. They include Vista Equity Partners (Vista), General Catalyst, JPMC, American Express, HSBC, and ...
Menlo Security's mission is enabling the world to connect, communicate and collaborate securely without compromise. COVID-19 has made our mission all the more real. We support customers across various enterprises including Fortune 500 companies, 9/10 of the largest global banks and the Department of Defense. The world has fundamentally changed. We are growing from 400 employees into the next phase of our journey, and we need passionate talent filled with empathy and agility. The right candidate for the job is ethical, hyper-organized, fanatical about seeing things through to completion, service-oriented, and humble enough to take feedback and coaching yet confident enough to provide feedback and coaching. Menlo is well-funded for growth and our investors are second to none. They include Vista Equity Partners (Vista), General Catalyst, JPMC, American Express, HSBC, and ...
Menlo Security's mission is enabling the world to connect, communicate and collaborate securely without compromise. COVID-19 has made our mission all the more real. We support customers across various enterprises including Fortune 500 companies, 9/10 of the largest global banks and the Department of Defense. The world has fundamentally changed. We are growing from 400 employees into the next phase of our journey, and we need passionate talent filled with empathy and agility. The right candidate for the job is ethical, hyper-organized, fanatical about seeing things through to completion, service-oriented, and humble enough to take feedback and coaching yet confident enough to provide feedback and coaching. Menlo is well-funded for growth and our investors are second to none. They include Vista Equity Partners (Vista), General Catalyst, JPMC, American Express, HSBC, and ...
Full time - Experienced (relevant combo of work and education) As the world works and lives faster, FIS is leading the way. Our fintech solutions touch nearly every market, company and person on the planet. Our teams are inclusive and diverse. Our colleagues work together and celebrate together. If you want to advance the world of fintech, wed like to ask you: Are you FIS? * Maintain knowledge of an assigned set of clients in terms of their business and their solutions / configurations for a particular domain or functional area. * Provide business and technical support to assigned clients through issue resolution, consulting on system functionality, best in class recommendations, and ensuring to adhere to our clients Service Level Agreements in all respects and to serve as a single point of governance and technical escalation
Full time - Experienced (relevant combo of work and education) As the world works and lives faster, FIS is leading the way. Our fintech solutions touch nearly every market, company and person on the planet. Our teams are inclusive and diverse. Our colleagues work together and celebrate together. If you want to advance the world of fintech, wed like to ask you: Are you FIS? * Maintain knowledge of an assigned set of clients in terms of their business and their solutions / configurations for a particular domain or functional area. * Provide business and technical support to assigned clients through issue resolution, consulting on system functionality, best in class recommendations, and ensuring to adhere to our clients Service Level Agreements in all respects and to serve as a single point of governance and technical escalation
Lab Informatics Engineer - Slough, UK - The actual location of this job is in Slough, United Kingdom. Join Lonzas Biologics R&D team and play a pivotal role in shaping the digital future of laboratory science. This role sits at the intersection of science, data, and engineering, with a strong focus on owning and delivering laboratory informatics solutions (ELN, LIMS, SDMS) that enable scalable, high-quality scientific workflows. This is a unique opportunity to take ownership of lab informatics systems and play a key role in Lonzas digital transformation. You will work in a highly collaborative environment, bridging science and technology to enable next-generation R&D. * An agile career and dynamic working culture. * An inclusive and ethical workplace. * Compensation programs that recognize high performance. * A variety of benefits dependent on role and location.
Lab Informatics Engineer - Slough, UK - The actual location of this job is in Slough, United Kingdom. Join Lonzas Biologics R&D team and play a pivotal role in shaping the digital future of laboratory science. This role sits at the intersection of science, data, and engineering, with a strong focus on owning and delivering laboratory informatics solutions (ELN, LIMS, SDMS) that enable scalable, high-quality scientific workflows. This is a unique opportunity to take ownership of lab informatics systems and play a key role in Lonzas digital transformation. You will work in a highly collaborative environment, bridging science and technology to enable next-generation R&D. * An agile career and dynamic working culture. * An inclusive and ethical workplace. * Compensation programs that recognize high performance. * A variety of benefits dependent on role and location.
The Rosalind Franklin Institute (the Franklin) is a technology institute established by the UK Government as a unique centre committed to advancing tools that are needed to transform healthcare in the future. Our teams are aligned across a number of technology and life science challenges as part of our strategic focus, with scientists, technologists and software engineers working together in a multi-disciplinary and collaborative environment at our state-of-the-art research facility at Harwell in Oxfordshire. For more information on the Franklins Challenges click here. Role Overview - As a Research Software Engineer (RSE) at the Franklin, you will bring scientific research and computational skills to develop scientific software, apply artificial intelligence (AI) and data science to solve scientific challenges and develop compute and data infrastructure to accelerate ...
The Rosalind Franklin Institute (the Franklin) is a technology institute established by the UK Government as a unique centre committed to advancing tools that are needed to transform healthcare in the future. Our teams are aligned across a number of technology and life science challenges as part of our strategic focus, with scientists, technologists and software engineers working together in a multi-disciplinary and collaborative environment at our state-of-the-art research facility at Harwell in Oxfordshire. For more information on the Franklins Challenges click here. Role Overview - As a Research Software Engineer (RSE) at the Franklin, you will bring scientific research and computational skills to develop scientific software, apply artificial intelligence (AI) and data science to solve scientific challenges and develop compute and data infrastructure to accelerate ...
The Opportunity - You will architect and build the data foundations that power litigation to support millions of Clients across the world, create AI services that augment our lawyers and analysts, and deploy intelligent tooling directly into client-facing journeys. The impact is real, the scope is huge, and the team is exceptional. Data Platform Engineering * Own the design and build of our Databricks Lakehouse architecture, Delta Lake, Unity Catalog, and more. * Build and maintain production-grade pipelines ingesting data from Litify/Salesforce, client submissions, and third-party sources. * Champion medallion architecture (bronze/silver/gold) and enforce data quality at every layer. * Optimise for performance and cost. AI & Machine Learning Engineering * Design and deploy internal AI services: RAG systems, LLM-powered document analysis, and intelligent data extraction ...
The Opportunity - You will architect and build the data foundations that power litigation to support millions of Clients across the world, create AI services that augment our lawyers and analysts, and deploy intelligent tooling directly into client-facing journeys. The impact is real, the scope is huge, and the team is exceptional. Data Platform Engineering * Own the design and build of our Databricks Lakehouse architecture, Delta Lake, Unity Catalog, and more. * Build and maintain production-grade pipelines ingesting data from Litify/Salesforce, client submissions, and third-party sources. * Champion medallion architecture (bronze/silver/gold) and enforce data quality at every layer. * Optimise for performance and cost. AI & Machine Learning Engineering * Design and deploy internal AI services: RAG systems, LLM-powered document analysis, and intelligent data extraction ...