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33 API jobs in Haslemere Industrial Estate, Welwyn + 20 miles
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Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
PREMIUM
RESTful API design and implementation expertise
RESTful API design and implementation expertise
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Expertise on Oracle Simphony, API knowledge, Knowledge of Product Limitations
Expertise on Oracle Simphony, API knowledge, Knowledge of Product Limitations
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API integrations
API integrations
FEATURED
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Martech Product Owner (iGaming)
Martech Product Owner (iGaming)
Technically Gifted Ltd
City of London (EC1V)
From £70,000 to £80,000 per annum
Ensure scalable, resilient API integration between MarTech tools, the Bonus Engine, product systems, and data warehouses - Define and manage the Bonus Engine roadmap, evolving API capabilities and reward mechanics to support campaign efficiency and player engagement.
Ensure scalable, resilient API integration between MarTech tools, the Bonus Engine, product systems, and data warehouses - Define and manage the Bonus Engine roadmap, evolving API capabilities and reward mechanics to support campaign efficiency and player engagement.
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Knowledge of ServiceNow scripting (JavaScript, Glide API) a plus.
Knowledge of ServiceNow scripting (JavaScript, Glide API) a plus.
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We are looking for a strong Full Stack Developer to deliver a short-term project involving a static website build, API scraping, and structured JSON output. * Develop API scraping scripts to extract structured data reliably * Proven experience building API scrapers (Axios, Puppeteer, BeautifulSoup, Cheerio, or similar) * Knowledge of API rate limits and bypass methods
We are looking for a strong Full Stack Developer to deliver a short-term project involving a static website build, API scraping, and structured JSON output. * Develop API scraping scripts to extract structured data reliably * Proven experience building API scrapers (Axios, Puppeteer, BeautifulSoup, Cheerio, or similar) * Knowledge of API rate limits and bypass methods
Strong grasp of API integrations, middleware and multi system architectures.
Strong grasp of API integrations, middleware and multi system architectures.
Full Stack Developer – Family Events Platform
Full Stack Developer – Family Events Platform
Loopla
Euston, North West London (NW1), NW1 2RT
Competitive
Vitest/Jest, Docker, CI/CD (GitHub Actions), Shadcn/MUI, MongoDB, microservices, Cloudflare/CDNs, Firebase, Google Maps API, startup experience.
Vitest/Jest, Docker, CI/CD (GitHub Actions), Shadcn/MUI, MongoDB, microservices, Cloudflare/CDNs, Firebase, Google Maps API, startup experience.
NEW
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Get your API on!
Get your API on!
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Software Automation QA
Software Automation QA
Profile 29
Loughton (IG10), IG10
From £50,000 to £60,000 per annum + benefits (see advert)
Conduct comprehensive testing of various API's used by affiliates and other third-party service providers
Conduct comprehensive testing of various API's used by affiliates and other third-party service providers
Senior Full Stack Web Developer
Senior Full Stack Web Developer
Profile 29
Loughton (IG10), IG10
From £80,000 to £100,000 per annum + benefits (see advert)
As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
Senior Full Stack Web Developer
Senior Full Stack Web Developer
Profile 29
Loughton (IG10), IG10
From £80,000 to £100,000 per annum + benefits (see advert)
As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
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Get your API on!
Get your API on!
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Solutions Architect - 6 months £700 per day - This logistics business, based in central London, has undertaken a significant change and transformation programme, the outcome of which is a new multi SAAS platform that will underpins the future state of the architecture. As part of this programme we are looking for a Solution Architect to contribute to shaping the future-state architecture that enables the organisation to meet its strategic business goals. This role ensures that technology solutions directly support desired business outcomes - such as improved efficiency, customer experience, scalability, and innovation-while maintaining strong architectural integrity. The Solution Architect oversees the design of systems and applications across the enterprise and regularly reviews the application portfolio to maximise value, reduce complexity, and ensure agility.
Solutions Architect - 6 months £700 per day - This logistics business, based in central London, has undertaken a significant change and transformation programme, the outcome of which is a new multi SAAS platform that will underpins the future state of the architecture. As part of this programme we are looking for a Solution Architect to contribute to shaping the future-state architecture that enables the organisation to meet its strategic business goals. This role ensures that technology solutions directly support desired business outcomes - such as improved efficiency, customer experience, scalability, and innovation-while maintaining strong architectural integrity. The Solution Architect oversees the design of systems and applications across the enterprise and regularly reviews the application portfolio to maximise value, reduce complexity, and ensure agility.
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Job Description - Role / Job Title:GE Smallworld Solution Architect - Work Location:Dublin / Cork (preferred) * We are seeking an experienced GE Smallworld Solution Architect to lead the design and implementation of advanced GIS solutions. * This role requires deep technical expertise, a strong understanding of solution design, and the ability to collaborate across multiple functional teams. * You will play a key role in crafting integrated, future-ready solutions that empower our client's digital transformation journey. The Role - A critical position within the team, this role is instrumental in defining the asset strategy for a leading utilities customer. You will serve as the architectural backbone of GIS initiatives, ensuring every layer of design, integration, and deployment aligns seamlessly with business goals and technical best practices. Your Responsibilities
Job Description - Role / Job Title:GE Smallworld Solution Architect - Work Location:Dublin / Cork (preferred) * We are seeking an experienced GE Smallworld Solution Architect to lead the design and implementation of advanced GIS solutions. * This role requires deep technical expertise, a strong understanding of solution design, and the ability to collaborate across multiple functional teams. * You will play a key role in crafting integrated, future-ready solutions that empower our client's digital transformation journey. The Role - A critical position within the team, this role is instrumental in defining the asset strategy for a leading utilities customer. You will serve as the architectural backbone of GIS initiatives, ensuring every layer of design, integration, and deployment aligns seamlessly with business goals and technical best practices. Your Responsibilities
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Location * London * Hybrid 1-2 days a week in the office * eligibility to work in the UK - Role Overview - We are looking for 2 experienced Senior Developers, preferably people who are experienced with Back End development, to join a team of eight mid-senior level developers on a greenfield Stream Factory project. This is a cutting-edge cloud solution that handles video and audio contributions, transformation, storage, and media file production. The successful applicants will help develop and maintain a suite of microservices that drive the backend workflows for preparing, transcoding, and distributing audio and video content online. In a future dominated by digital media, our role ensures the content stays relevant in a rapidly evolving landscape. To join our Agile, multi-disciplinary engineering team, the ideal candidate will have strong skills in Java, AWS (Lambda,
Location * London * Hybrid 1-2 days a week in the office * eligibility to work in the UK - Role Overview - We are looking for 2 experienced Senior Developers, preferably people who are experienced with Back End development, to join a team of eight mid-senior level developers on a greenfield Stream Factory project. This is a cutting-edge cloud solution that handles video and audio contributions, transformation, storage, and media file production. The successful applicants will help develop and maintain a suite of microservices that drive the backend workflows for preparing, transcoding, and distributing audio and video content online. In a future dominated by digital media, our role ensures the content stays relevant in a rapidly evolving landscape. To join our Agile, multi-disciplinary engineering team, the ideal candidate will have strong skills in Java, AWS (Lambda,
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Company Overview - At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion people by the end of the decade. Our R&D focuses on discovering and delivering vaccines and medicines, combining our understanding of the immune system with cutting-edge technology to transform peoples lives. GSK fosters a culture ambitious for patients, accountable for impact, and committed to doing the right thing, making sure that we focus our efforts on accelerating significant assets that meet patients needs and have the highest probability of success. GSK has kicked off 2025 with impressive growth in sales, profits, and earnings. We anticipate five major new FDA product approvals and 15 phase III/pivotal study readouts over the next two years. So far, we have secured two FDA approvals, with three more expected later this year.
Company Overview - At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion people by the end of the decade. Our R&D focuses on discovering and delivering vaccines and medicines, combining our understanding of the immune system with cutting-edge technology to transform peoples lives. GSK fosters a culture ambitious for patients, accountable for impact, and committed to doing the right thing, making sure that we focus our efforts on accelerating significant assets that meet patients needs and have the highest probability of success. GSK has kicked off 2025 with impressive growth in sales, profits, and earnings. We anticipate five major new FDA product approvals and 15 phase III/pivotal study readouts over the next two years. So far, we have secured two FDA approvals, with three more expected later this year.
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Treasury & Trading Platform Lead
Treasury & Trading Platform Lead
Johnson Matthey Plc
Royston (SG8), SG8 5HE
competitive salary and package
World-changing careers, enabled by Johnson Matthey. With more than 200 years history, j oin us and help to accelerate the transition to net-zero! As a Treasury & Trading Platform Lead , you'll contribute to JM's mission as a world leader in sustainable technology, transforming energy and reducing carbon emissions for a cleaner, brighter future. * Overseeing all systems that support and enable the mission-critical Treasury and Platinum Metal Trading teams - ensuring the platforms are reliable, scalable, and aligned with business needs. * Defining and executing the platform strategy and roadmap - aligning with business goals, prioritizing features and capabilities based on customer needs, value, and ROI, and ensuring scalability and performance. * Building strong partnerships with business stakeholders - translating requirements into technical outcomes and promoting agi
World-changing careers, enabled by Johnson Matthey. With more than 200 years history, j oin us and help to accelerate the transition to net-zero! As a Treasury & Trading Platform Lead , you'll contribute to JM's mission as a world leader in sustainable technology, transforming energy and reducing carbon emissions for a cleaner, brighter future. * Overseeing all systems that support and enable the mission-critical Treasury and Platinum Metal Trading teams - ensuring the platforms are reliable, scalable, and aligned with business needs. * Defining and executing the platform strategy and roadmap - aligning with business goals, prioritizing features and capabilities based on customer needs, value, and ROI, and ensuring scalability and performance. * Building strong partnerships with business stakeholders - translating requirements into technical outcomes and promoting agi
Treasury & Trading Platform Specialist
Treasury & Trading Platform Specialist
Johnson Matthey Plc
Royston (SG8), SG8 5HE
competitive salary and package
World-changing careers, enabled by Johnson Matthey. With more than 200 years history, join us and help to accelerate the transition to net-zero! As a Treasury & Trading Platform Specialist, you'll contribute to JM's mission as a world leader in sustainable technology, transforming energy and reducing carbon emissions for a cleaner, brighter future. * Ensuring platform stability and performance through proactive monitoring, optimisation, and adherence to security and compliance standards. * Managing technical delivery and support by overseeing external partners, resolving complex issues, and maintaining detailed solution documentation. * Driving solution design and implementation in collaboration with engineering teams and vendors, ensuring high-quality, scalable configurations aligned with business needs.
World-changing careers, enabled by Johnson Matthey. With more than 200 years history, join us and help to accelerate the transition to net-zero! As a Treasury & Trading Platform Specialist, you'll contribute to JM's mission as a world leader in sustainable technology, transforming energy and reducing carbon emissions for a cleaner, brighter future. * Ensuring platform stability and performance through proactive monitoring, optimisation, and adherence to security and compliance standards. * Managing technical delivery and support by overseeing external partners, resolving complex issues, and maintaining detailed solution documentation. * Driving solution design and implementation in collaboration with engineering teams and vendors, ensuring high-quality, scalable configurations aligned with business needs.
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Senior Full Stack PHP Developer (Remote)
Senior Full Stack PHP Developer (Remote)
Digital Appointments
Bloomsbury, Central London (WC1), WC1N 3AX
From £50,000 to £60,000 per annum
A fantastic, fully remote opportunity! Are you an experienced Full Stack PHP Developer with React? This well-established SaaS platform used by businesses across the UK prides itself on providing a stable, reliable, and feature-rich service to its large portfolio of clients. They foster a collaborative, supportive, and fully remote working environment where talented developers can really thrive. We are seeking a talented and experienced Full Stack PHP Developer to join their dedicated development team. You will play a crucial role in the ongoing development, maintenance, and enhancement of their core SaaS platform. Working across the full stack, you'll be involved in building new features, optimising existing code, and ensuring the scalability and reliability of their application. This is an excellent opportunity to contribute significantly to a great product within a
A fantastic, fully remote opportunity! Are you an experienced Full Stack PHP Developer with React? This well-established SaaS platform used by businesses across the UK prides itself on providing a stable, reliable, and feature-rich service to its large portfolio of clients. They foster a collaborative, supportive, and fully remote working environment where talented developers can really thrive. We are seeking a talented and experienced Full Stack PHP Developer to join their dedicated development team. You will play a crucial role in the ongoing development, maintenance, and enhancement of their core SaaS platform. Working across the full stack, you'll be involved in building new features, optimising existing code, and ensuring the scalability and reliability of their application. This is an excellent opportunity to contribute significantly to a great product within a
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We are seeking a highly skilled LLM Developer to design, build, and deploy a web-based AI agent that will automate and elevate our core QA coordination tasks. * Design & Implement NLP Pipelines: Parse, understand, and extract key information from unstructured Release Notes and Test Policy documents. * Develop RAG Systems: Fine-tune a Retrieval-Augmented Generation (RAG) system, training models on QA policies for accuracy and context-awareness. * Build AI Agent Architecture: Utilize modern LLM APIs (e.g., OpenAI, Anthropic, Gemini) and frameworks (e.g., LangChain, LlamaIndex) to create a robust system. * Integrate Backend APIs: Enable the AI agent to automatically publish generated test guides to our internal web platform. * Create Web-Based UI: Develop a simple, effective interface for QA teams to interact with, review, and override AI outputs if necessary.
We are seeking a highly skilled LLM Developer to design, build, and deploy a web-based AI agent that will automate and elevate our core QA coordination tasks. * Design & Implement NLP Pipelines: Parse, understand, and extract key information from unstructured Release Notes and Test Policy documents. * Develop RAG Systems: Fine-tune a Retrieval-Augmented Generation (RAG) system, training models on QA policies for accuracy and context-awareness. * Build AI Agent Architecture: Utilize modern LLM APIs (e.g., OpenAI, Anthropic, Gemini) and frameworks (e.g., LangChain, LlamaIndex) to create a robust system. * Integrate Backend APIs: Enable the AI agent to automatically publish generated test guides to our internal web platform. * Create Web-Based UI: Develop a simple, effective interface for QA teams to interact with, review, and override AI outputs if necessary.
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Graduate IT Project Manager
Graduate IT Project Manager
Inspiring Search
Wealdstone, Harrow (HA3), HA3 5EQ
From £28,000 to £32,000 per annum
We are one of the leading plumbing, heating and electrical companies nationally, serving residential and commercial clients throughout South East England with almost three decades in the industry, we have worked to build a large, fully equipped team of over 150 members of staff all focused on providing the best quality service to our customers. We work closely with various known housing associations, local councils as well as catering to the private sector such as schools, hotels, care homes and commercial building. Support the delivery and improvement of the business systems and information security. The Graduate IT Project Manager will coordinate with a third-party IT development partners, assist in implementing system enhancements, manage company IT assets, and help maintain access control and documentation processes across the business.
We are one of the leading plumbing, heating and electrical companies nationally, serving residential and commercial clients throughout South East England with almost three decades in the industry, we have worked to build a large, fully equipped team of over 150 members of staff all focused on providing the best quality service to our customers. We work closely with various known housing associations, local councils as well as catering to the private sector such as schools, hotels, care homes and commercial building. Support the delivery and improvement of the business systems and information security. The Graduate IT Project Manager will coordinate with a third-party IT development partners, assist in implementing system enhancements, manage company IT assets, and help maintain access control and documentation processes across the business.
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FTP/SFTP, SSL Certificates, REST API, SOAP, Postman, Excel, CSV files ??
FTP/SFTP, SSL Certificates, REST API, SOAP, Postman, Excel, CSV files ??
FEATURED
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Deep knowledge of REST API design, scalability, fault tolerance, and performance optimization.
Deep knowledge of REST API design, scalability, fault tolerance, and performance optimization.
Related Jobs
Locations
- The City, City (EC4)
- The City, City (EC3)
- The City, City (EC2)
- Shoreditch
- Southwark
- Hinxton
- Ireland
- Lambeth
- Stewartby
- Arundel Heights
- City of London
- Cambridge
- Reading
- Central London
- West End
- South East London
- Milton Keynes
- East London
- West London
- Northampton
- London
- Berkshire
- Cambridgeshire
- Buckinghamshire
- Hertfordshire
- Oxfordshire
- Essex
- Northamptonshire
- Surrey
- Bedfordshire
- South East
- East Anglia
- East Midlands
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