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Our client, a respected UK leader in mission-critical software and systems, is seeking a capable contractor to assist with API development and systems integration involving Oracle and internal platforms. * Familiarity with API development and integration
Our client, a respected UK leader in mission-critical software and systems, is seeking a capable contractor to assist with API development and systems integration involving Oracle and internal platforms. * Familiarity with API development and integration
We want you to #JOINTHEREBELLION! For 30 years weve been independently developing and publishing incredible video games at our multiple studios founded by Jason & Chris Kingsley, but Rebellion is more than just games. We have our own film studio, we create board games, publish books, and through 2000AD, publish comics and graphic novels such as the amazing Judge Dredd. We are seeking an experienced and highly skilled back-end Senior Online Developer to join our tech team, to help build and support internal and external web APIs to support our game engine team. The successful candidate will join a small team and user their specialist JavaScript knowledge to be involved in the entire software development lifecycle, from requirements gathering and system design to implementation, testing, deployment, and maintenance.
We want you to #JOINTHEREBELLION! For 30 years weve been independently developing and publishing incredible video games at our multiple studios founded by Jason & Chris Kingsley, but Rebellion is more than just games. We have our own film studio, we create board games, publish books, and through 2000AD, publish comics and graphic novels such as the amazing Judge Dredd. We are seeking an experienced and highly skilled back-end Senior Online Developer to join our tech team, to help build and support internal and external web APIs to support our game engine team. The successful candidate will join a small team and user their specialist JavaScript knowledge to be involved in the entire software development lifecycle, from requirements gathering and system design to implementation, testing, deployment, and maintenance.
Were Nominet a world-leading domain name registry operating at the heart of the UK internet. While we're best known for running .UK domains, our DNS expertise also underpins critical internet infrastructure that government services, including the NHS, rely on. As a public benefit company, our work has a positive impact on society. Weve donated millions to projects that use technology to improve peoples lives and have committed to delivering £60m worth of support over the next three years. As the Head of Registry Engineering at Nominet, you will lead a core technology engineering team to deliver industry leading Registry Systems for the internet. This is a critical role with responsibility for engineering Nominets main line of business. You will manage a highly skilled team who are experts in Registry Systems and full stack application development in Java.
Were Nominet a world-leading domain name registry operating at the heart of the UK internet. While we're best known for running .UK domains, our DNS expertise also underpins critical internet infrastructure that government services, including the NHS, rely on. As a public benefit company, our work has a positive impact on society. Weve donated millions to projects that use technology to improve peoples lives and have committed to delivering £60m worth of support over the next three years. As the Head of Registry Engineering at Nominet, you will lead a core technology engineering team to deliver industry leading Registry Systems for the internet. This is a critical role with responsibility for engineering Nominets main line of business. You will manage a highly skilled team who are experts in Registry Systems and full stack application development in Java.
Knowledge of data architecture, API design, and integration patterns.
Knowledge of data architecture, API design, and integration patterns.
83 exact matches jobs are outside your preferred location
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Job Title: Web Solutions Engineer/Full Stack Engineer - Location: Address: 1-13 St Giles High St, London WC2H 8AG - Mode of working: Hybrid (3 Days in the Office) Duration: 6+ Months contract initially - As a Web Solutions Engineer (WSE) you are responsible for building, designing, and deploying scalable, modern, web applications. You deliver full pieces of functionality on moderately complex projects with minimal assistance. You architect high quality web applications, and design key tools and systems that support said web applications. * Write and review code in JavaScript or TypeScript, Java, Kotlin, Golang, and/or SQL * Test, debug, maintain and/or update full-stack web applications. * Write and review technical documents, including design, development, and revision documents. * Collaborate with Product, UX, QA, and engineering teams, to deliver new features
Job Title: Web Solutions Engineer/Full Stack Engineer - Location: Address: 1-13 St Giles High St, London WC2H 8AG - Mode of working: Hybrid (3 Days in the Office) Duration: 6+ Months contract initially - As a Web Solutions Engineer (WSE) you are responsible for building, designing, and deploying scalable, modern, web applications. You deliver full pieces of functionality on moderately complex projects with minimal assistance. You architect high quality web applications, and design key tools and systems that support said web applications. * Write and review code in JavaScript or TypeScript, Java, Kotlin, Golang, and/or SQL * Test, debug, maintain and/or update full-stack web applications. * Write and review technical documents, including design, development, and revision documents. * Collaborate with Product, UX, QA, and engineering teams, to deliver new features
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Technical Agile Business Analyst/ Product Engineer
Technical Agile Business Analyst/ Product Engineer
Hays
London, EC3A 4BF
£50000.0 - £60000.0 per annum + 50000-60000
Proficient with tools such as JIRA, Confluence, Figma and an API documentation platform
Proficient with tools such as JIRA, Confluence, Figma and an API documentation platform
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Contract: Automated Test Engineer (SFIA 5) Rate: £400/day | Outside IR35 | Duration: 12 months - Security Clearance: NPPV2 / NPPV3 - We are seeking an experienced Automated Test Engineer to design and implement automated testing frameworks for complex systems. You will ensure both functional and non-functional requirements are met, working closely with stakeholders to deliver high-quality solutions in a fully remote, agile environment. * Develop and enhance automated testing across all stages of product, system, and service development. * Collaborate with stakeholders to define requirements, acceptance criteria, and ensure robust test coverage. * Implement automation-first strategies and best practices for repeatable, efficient testing. * Identify and adopt tools, techniques, and processes to strengthen testing frameworks. * Mentor and support less experienced test en
Contract: Automated Test Engineer (SFIA 5) Rate: £400/day | Outside IR35 | Duration: 12 months - Security Clearance: NPPV2 / NPPV3 - We are seeking an experienced Automated Test Engineer to design and implement automated testing frameworks for complex systems. You will ensure both functional and non-functional requirements are met, working closely with stakeholders to deliver high-quality solutions in a fully remote, agile environment. * Develop and enhance automated testing across all stages of product, system, and service development. * Collaborate with stakeholders to define requirements, acceptance criteria, and ensure robust test coverage. * Implement automation-first strategies and best practices for repeatable, efficient testing. * Identify and adopt tools, techniques, and processes to strengthen testing frameworks. * Mentor and support less experienced test en
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We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
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Basic knowledge of REST and SOAP API integrations.
Basic knowledge of REST and SOAP API integrations.
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Excellent development skills, with a depth of experience including C#, Java (Spring Boot, JPA/Hibernate), REST API's, observability and monitoring, queue technologies and security.
Excellent development skills, with a depth of experience including C#, Java (Spring Boot, JPA/Hibernate), REST API's, observability and monitoring, queue technologies and security.
PREMIUM
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London - Hybrid (1x day per week) Salary: Up to £100k DOE + Benefits - About Us - Our client is a Insurtech Unicorn looking to expand their engineering team. With the opportunity to work on existing products which have generated millions in revenue to something new changing the landscape of the insurance world, this is the perfect opportunity for a results driven and growth focused Senior engineer looking to start an ambitious business. The Role - We're seeking a Lead Backend Engineer to drive the architecture, development, and scaling of cloud-native microservices using Python-especially FastAPI. You'll lead a cross-functional team building resilient backend systems that support millions of users, with a direct impact on product and business outcomes. This fast-paced role demands expertise in building scalable, secure services and guiding the evolution of our platfor
London - Hybrid (1x day per week) Salary: Up to £100k DOE + Benefits - About Us - Our client is a Insurtech Unicorn looking to expand their engineering team. With the opportunity to work on existing products which have generated millions in revenue to something new changing the landscape of the insurance world, this is the perfect opportunity for a results driven and growth focused Senior engineer looking to start an ambitious business. The Role - We're seeking a Lead Backend Engineer to drive the architecture, development, and scaling of cloud-native microservices using Python-especially FastAPI. You'll lead a cross-functional team building resilient backend systems that support millions of users, with a direct impact on product and business outcomes. This fast-paced role demands expertise in building scalable, secure services and guiding the evolution of our platfor
Senior Backend Engineer - Data Pipelines - £600.day
Senior Backend Engineer - Data Pipelines - £600.day
Wilson Brown Limited
EC1, City of London
Up to £600 per day Outside IR35 & Fully Remote (UK)
Senior Software Engineer - Data & Backend - Up to £600.day outside IR35 - LegalTech | Remote (UK) | Python | GCP | Data Pipelines | Event-Based Solutions - Were helping a seed-funded LegalTech startup build their MVP. They need a Data-Focused Senior Software Engineer with a passion for building data pipelines and backend engineering using Python. If you crave a role where you can build 0-1 and have big impact then look no further! * Location: Remote (UK Only) * Outside IR35 * Up to £600.day * 3 months (possible extension) As the Software Engineer on this project, youll design and build data pipelines in Python and GCP, deliver high-performance backend systems, and implement IaC to ensure everything scales. * Build backend services and data pipelines from scratch * Architect event-driven solutions in GCP with Pub/Sub & Cloud Run
Senior Software Engineer - Data & Backend - Up to £600.day outside IR35 - LegalTech | Remote (UK) | Python | GCP | Data Pipelines | Event-Based Solutions - Were helping a seed-funded LegalTech startup build their MVP. They need a Data-Focused Senior Software Engineer with a passion for building data pipelines and backend engineering using Python. If you crave a role where you can build 0-1 and have big impact then look no further! * Location: Remote (UK Only) * Outside IR35 * Up to £600.day * 3 months (possible extension) As the Software Engineer on this project, youll design and build data pipelines in Python and GCP, deliver high-performance backend systems, and implement IaC to ensure everything scales. * Build backend services and data pipelines from scratch * Architect event-driven solutions in GCP with Pub/Sub & Cloud Run
Junior Presales Engineer, UK (German & English)
Junior Presales Engineer, UK (German & English)
Optibus Transportation Limited
The City, EC2M 5TQ
From £39,000 to £45,000 per annum Salary displays OTE, which is 80% &
Optibusis a unified software platform revolutionizing public transportation planning, scheduling, and operations in over 7,000 cities worldwide. Using AI, ML, and optimization algorithms, it empowers agencies to design more efficient, equitable, and sustainable transit networks, enhancing passenger access, reducing emissions, and improving driver conditions. With offices globally and a team of 350+ employees, Optibus fosters a collaborative culture centered on innovation, determination, and impact. As the first unicorn in public transportation technology, Optibus is driving the modernization of mass transit to make it the preferred choice for cities and passengers alike. We are looking for a Junior Presales Engineer to join our global Revenue team! Based in London, this individual will play a crucial role in supporting core presales engineering activities in showcasin
Optibusis a unified software platform revolutionizing public transportation planning, scheduling, and operations in over 7,000 cities worldwide. Using AI, ML, and optimization algorithms, it empowers agencies to design more efficient, equitable, and sustainable transit networks, enhancing passenger access, reducing emissions, and improving driver conditions. With offices globally and a team of 350+ employees, Optibus fosters a collaborative culture centered on innovation, determination, and impact. As the first unicorn in public transportation technology, Optibus is driving the modernization of mass transit to make it the preferred choice for cities and passengers alike. We are looking for a Junior Presales Engineer to join our global Revenue team! Based in London, this individual will play a crucial role in supporting core presales engineering activities in showcasin
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Contract Golang Engineer AI for Defence £700800/day | Inside IR35 | Hybrid / Secure Site | SC/DV Cleared | UK Nationals Only - Initial 3-month contract (extensions expected up to 12 months) Join a ground-breaking AI programme delivering national security impact. Were working with a leading UK AI firm on a mission-critical Defence deployment. This greenfield build calls for a Golang specialist to help deliver backend systems that support real-time inference, transcription pipelines, and natural language interaction all under tight performance and security constraints. * Build high-performance services using Golang in secure environments * Develop ingestion and processing pipelines for transcription and structured/unstructured data * Contribute to intelligent data flows including graph-based and RAG inference pipelines
Contract Golang Engineer AI for Defence £700800/day | Inside IR35 | Hybrid / Secure Site | SC/DV Cleared | UK Nationals Only - Initial 3-month contract (extensions expected up to 12 months) Join a ground-breaking AI programme delivering national security impact. Were working with a leading UK AI firm on a mission-critical Defence deployment. This greenfield build calls for a Golang specialist to help deliver backend systems that support real-time inference, transcription pipelines, and natural language interaction all under tight performance and security constraints. * Build high-performance services using Golang in secure environments * Develop ingestion and processing pipelines for transcription and structured/unstructured data * Contribute to intelligent data flows including graph-based and RAG inference pipelines
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Strong integration, E2E and API testing experience
Strong integration, E2E and API testing experience
PREMIUM
We are a fast-growing data-as-a-service provider helping businesses access high-quality business data via a robust REST API. As a Sales Engineer, you will work closely with our sales team to identify customer needs, explore potential solutions using our API, and ensure a smooth technical onboarding experience. * Explain API capabilities, data models, and integration workflows in a clear, customer-centric way * Evaluate customer challenges and propose tailored solutions using our REST API and MCP * Deliver demos, proof-of-concept support, and API walkthroughs * Solid understanding of APIs, REST, JSON, authentication (OAuth, API keys), and data workflows * Comfortable debugging basic integration issues (e.g., API calls, response errors, authentication p
We are a fast-growing data-as-a-service provider helping businesses access high-quality business data via a robust REST API. As a Sales Engineer, you will work closely with our sales team to identify customer needs, explore potential solutions using our API, and ensure a smooth technical onboarding experience. * Explain API capabilities, data models, and integration workflows in a clear, customer-centric way * Evaluate customer challenges and propose tailored solutions using our REST API and MCP * Deliver demos, proof-of-concept support, and API walkthroughs * Solid understanding of APIs, REST, JSON, authentication (OAuth, API keys), and data workflows * Comfortable debugging basic integration issues (e.g., API calls, response errors, authentication p
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Staff Back End Engineer
Staff Back End Engineer
John Lewis & Partners
SW1V, South West London, SW1V 2QQ
From £75,000 to £92,000 per annum
REST API development and/or consumption.
REST API development and/or consumption.
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Experience with API-first platforms and optimizing front-end systems that consume complex API data.
Experience with API-first platforms and optimizing front-end systems that consume complex API data.
Knowledge of HSE, Safety and Global Plant Layout practices (i.e., PIP, API, GAP, etc.)
Knowledge of HSE, Safety and Global Plant Layout practices (i.e., PIP, API, GAP, etc.)
All relevant API/ISO and Codes for Equipment within packages in both FEED and EPC environments.
All relevant API/ISO and Codes for Equipment within packages in both FEED and EPC environments.
Starling is the UKs first and leading digital bank on a mission to fix banking! Our vision is fast technology, fair service, and honest values. We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. Were a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. Were a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices. Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech.
Starling is the UKs first and leading digital bank on a mission to fix banking! Our vision is fast technology, fair service, and honest values. We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. Were a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. Were a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices. Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech.
Familiarity with a GPGPU API such as SYCL, OpenCL or CUDA.
Familiarity with a GPGPU API such as SYCL, OpenCL or CUDA.
Knowledge and/or work experience with API's
Knowledge and/or work experience with API's
1. Design, develop, and maintain web applications and RESTful APIs using TypeScript, GraphQL, React, and Node.js. 2. Collaborate with product owners, UX/UI designers, and other stakeholders to gather requirements and translate them into technical specifications. 3. Build intuitive user interfaces using modern web technologies, with a focus on usability and responsiveness. 4. Implement server-side logic and business rules using Node.js and Express framework. 5. Develop and integrate with external APIs and third-party services to enable data exchange and system integrations. 6. Design and optimise databases, ensuring efficient data storage, retrieval, and query performance. 7. Implement and maintain unit tests and end-to-end tests using frameworks like Jest or Mocha, practicing Test-Driven Development (TDD) principles. 8.
1. Design, develop, and maintain web applications and RESTful APIs using TypeScript, GraphQL, React, and Node.js. 2. Collaborate with product owners, UX/UI designers, and other stakeholders to gather requirements and translate them into technical specifications. 3. Build intuitive user interfaces using modern web technologies, with a focus on usability and responsiveness. 4. Implement server-side logic and business rules using Node.js and Express framework. 5. Develop and integrate with external APIs and third-party services to enable data exchange and system integrations. 6. Design and optimise databases, ensuring efficient data storage, retrieval, and query performance. 7. Implement and maintain unit tests and end-to-end tests using frameworks like Jest or Mocha, practicing Test-Driven Development (TDD) principles. 8.
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Node.js for services and API development
Node.js for services and API development