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8 Contract API jobs in Newport, Gwent + 20 miles
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Restful and/or RPC API
Restful and/or RPC API
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Work Location: Bristol (2days) Essential Skills / Knowledge / Experience * Extensive knowledge of writing secure scalable enterprise-grade Go applications * Experience of REST APIs, containerisation technologies, micro-services architecture * Ability to work collaboratively within a team as well as independently * Excellent analytical, problem solving, and strategic thinking skills * In depth knowledge of best coding practices, code management, agile development practices and continuous delivery * Understand how to performance optimise and fine tune backend applications to meet demanding NFRs - Desirable Skills / Knowledge / Experience * Experience of JAVA development * Experience with cryptography frameworks in Go and JAVA * Experience with SQL databases * Experience and/or interest in application security and/or mobile app security
Work Location: Bristol (2days) Essential Skills / Knowledge / Experience * Extensive knowledge of writing secure scalable enterprise-grade Go applications * Experience of REST APIs, containerisation technologies, micro-services architecture * Ability to work collaboratively within a team as well as independently * Excellent analytical, problem solving, and strategic thinking skills * In depth knowledge of best coding practices, code management, agile development practices and continuous delivery * Understand how to performance optimise and fine tune backend applications to meet demanding NFRs - Desirable Skills / Knowledge / Experience * Experience of JAVA development * Experience with cryptography frameworks in Go and JAVA * Experience with SQL databases * Experience and/or interest in application security and/or mobile app security
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Position, Navigation & Timing (PNT) Systems Engineer - SC cleared
Position, Navigation & Timing (PNT) Systems Engineer - SC cleared
Evodia Limited
Bristol (BS34)
From £350 to £425 per day Inside IR35
At Evodia Limited, we are proud to partner with a leading defence organisation seeking a highly capable PNT Systems Engineer with current SC security clearance. This is an exciting opportunity to contribute to critical defence projects that support national security and operational excellence. Role Overview - This contract position offers a hybrid working arrangement, with onsite presence required in Bristol once per week.. The role involves delivering key Navigation & Timing (PNT) projects, providing subject matter expertise, and supporting operational activities. The successful candidate will work under the supervision of a PI Programme Manager and PI Engineering Manager, contributing to the design, verification, and documentation of electronic systems and sensors integral to defence applications. Key Responsibilities
At Evodia Limited, we are proud to partner with a leading defence organisation seeking a highly capable PNT Systems Engineer with current SC security clearance. This is an exciting opportunity to contribute to critical defence projects that support national security and operational excellence. Role Overview - This contract position offers a hybrid working arrangement, with onsite presence required in Bristol once per week.. The role involves delivering key Navigation & Timing (PNT) projects, providing subject matter expertise, and supporting operational activities. The successful candidate will work under the supervision of a PI Programme Manager and PI Engineering Manager, contributing to the design, verification, and documentation of electronic systems and sensors integral to defence applications. Key Responsibilities
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Define API and data integration strategies in line with digital standards * Expertise in data and API-driven integration
Define API and data integration strategies in line with digital standards * Expertise in data and API-driven integration
Senior Software Developer (With Management)
Senior Software Developer (With Management)
Digital Health and Care Wales
Cardiff, South Glamorgan
£48,527 - £55,532 a year
Web Services, API, XML, XSLT, .Net , SQL, SOAP, REST
Web Services, API, XML, XSLT, .Net , SQL, SOAP, REST
We are seeking experienced Full Stack TypeScript Developer to join our team and help build innovative, cross-platform applications using a unified architecture. You'll work across the stack - developing responsive frontends in React, building robust RESTful/GraphQL APIs with Node.js and Fastify, and creating desktop/mobile apps using Electron and React Native. Our unified approach ensures code reusability and consistency across all platforms. Familiarity with XSL for data transformation is a plus. We're especially keen to hear from candidates who have real-world experience with vibe coding - using AI tools like Claude, Cursor, or CoPilot to build production-grade software faster and smarter. This is a remote job with regular travel to Bristol. About Contenta - Contenta is part of RWSs content management platform focused on the Aerospace & Defence market.
We are seeking experienced Full Stack TypeScript Developer to join our team and help build innovative, cross-platform applications using a unified architecture. You'll work across the stack - developing responsive frontends in React, building robust RESTful/GraphQL APIs with Node.js and Fastify, and creating desktop/mobile apps using Electron and React Native. Our unified approach ensures code reusability and consistency across all platforms. Familiarity with XSL for data transformation is a plus. We're especially keen to hear from candidates who have real-world experience with vibe coding - using AI tools like Claude, Cursor, or CoPilot to build production-grade software faster and smarter. This is a remote job with regular travel to Bristol. About Contenta - Contenta is part of RWSs content management platform focused on the Aerospace & Defence market.
We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description - We challenge where it matters and own the outcome.
We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description - We challenge where it matters and own the outcome.
Technical Visionary: Strong knowledge of cloud architectures (Azure, AWS or GCP), microservices, API development, and modern development frameworks.
Technical Visionary: Strong knowledge of cloud architectures (Azure, AWS or GCP), microservices, API development, and modern development frameworks.
73 exact matches jobs are outside your preferred location
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TypeScript - strongly typed, enterprise-grade API development
TypeScript - strongly typed, enterprise-grade API development
FEATURED
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Node.JS Developer (SC Cleared)
Node.JS Developer (SC Cleared)
Sanderson Government and Defence
Corsham, Wiltshire, BBTE
£500 - £550 per day + Inside IR35
SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
FEATURED
Node.JS Developer
Node.JS Developer
Sanderson Government and Defence
Corsham, Wiltshire, BBTE
£500 - £550 per day + Inside IR35
SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
FEATURED
Description - The Focal and Naim mobile app is used to control streaming audio products and wireless headphones. It is available on iOS and Android and is designed and developed in-house. Working in the Research and Development department Mobile Apps team you will assist in app development focusing on either iOS or Android. Using technologies native to your chosen platform you will either work on new app features or improving existing features. Key Responsibilities * Assisting in developing iOS/Android app * Work with other developers, designers and sometimes engineers from the embedded software team. * Write Clean, Maintainable Code * Test Features and Functionality * Participate in Code Reviews * Participate in daily stand-up meetings - Skills, Knowledge and Expertise * Android Developers: Android Studio, Kotlin and Compose. * iOS Developers: Xcode, Swift and Swift
Description - The Focal and Naim mobile app is used to control streaming audio products and wireless headphones. It is available on iOS and Android and is designed and developed in-house. Working in the Research and Development department Mobile Apps team you will assist in app development focusing on either iOS or Android. Using technologies native to your chosen platform you will either work on new app features or improving existing features. Key Responsibilities * Assisting in developing iOS/Android app * Work with other developers, designers and sometimes engineers from the embedded software team. * Write Clean, Maintainable Code * Test Features and Functionality * Participate in Code Reviews * Participate in daily stand-up meetings - Skills, Knowledge and Expertise * Android Developers: Android Studio, Kotlin and Compose. * iOS Developers: Xcode, Swift and Swift
We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description - We challenge where it matters and own the outcome.
We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description - We challenge where it matters and own the outcome.
Attivo are Lifestyle Financial Planners. Were a privately owned company. We prefer it that way. It means were free to do what we feel is best for our clients and our people. Our work is all about our clients. We pride ourselves on being completely transparent, open and honest an approach that builds trust with our clients and inspires their financial confidence. Our experienced, highly qualified financial specialists and expert support teams are committed to delivering more for all our clients. Our independent status and unique approach to understanding our clients, their preferences and their motivation, sets us apart. We will build and provide ongoing support for a bespoke financial plan aimed at fulfilling our clients' lifestyle needs. Whether youre a private client or a business accessing our corporate services, you can rely on a clear, consistent service from you
Attivo are Lifestyle Financial Planners. Were a privately owned company. We prefer it that way. It means were free to do what we feel is best for our clients and our people. Our work is all about our clients. We pride ourselves on being completely transparent, open and honest an approach that builds trust with our clients and inspires their financial confidence. Our experienced, highly qualified financial specialists and expert support teams are committed to delivering more for all our clients. Our independent status and unique approach to understanding our clients, their preferences and their motivation, sets us apart. We will build and provide ongoing support for a bespoke financial plan aimed at fulfilling our clients' lifestyle needs. Whether youre a private client or a business accessing our corporate services, you can rely on a clear, consistent service from you
Were Civica, and we create software that helps deliver critical services for citizens all around the world. From local government, to education, health, and care, over 5,000 public bodies across the globe use our software to provide essential services to over 100 million citizens. Our aspiration is to be a GovTech champion everywhere we work, supporting the needs of citizens and those who serve them every day. Building on 21 years of continuous growth and success, we're at a pivotal point in our journey to realise that aspiration. Why you will love this opportunity as Technical Consultant at Civica - Its an essential role in the Civica LG Division Services Team, working across a range of products and customers in the portfolio to deliver professional services consultancy on several concurrent projects.
Were Civica, and we create software that helps deliver critical services for citizens all around the world. From local government, to education, health, and care, over 5,000 public bodies across the globe use our software to provide essential services to over 100 million citizens. Our aspiration is to be a GovTech champion everywhere we work, supporting the needs of citizens and those who serve them every day. Building on 21 years of continuous growth and success, we're at a pivotal point in our journey to realise that aspiration. Why you will love this opportunity as Technical Consultant at Civica - Its an essential role in the Civica LG Division Services Team, working across a range of products and customers in the portfolio to deliver professional services consultancy on several concurrent projects.
Build API-driven solutions, ensuring compatibility with jsonapi.org specifications.
Build API-driven solutions, ensuring compatibility with jsonapi.org specifications.
Familiarity with API testing tools (e.g. Postman)
Familiarity with API testing tools (e.g. Postman)
Strong commercial experience with Node.js (Back End services and API development). * Knowledge of RESTful API design and integration.
Strong commercial experience with Node.js (Back End services and API development). * Knowledge of RESTful API design and integration.
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Senior Front-End Developer - 1 Year Contract - Remote
Senior Front-End Developer - 1 Year Contract - Remote
Stealth IT Consulting Limited
UK
From £450 to £500 per day
Understanding of API integrations and cross-functional workflow
Understanding of API integrations and cross-functional workflow
Senior Full Stack Developer (SC Cleared) - 12 Month Contract - Remote
Senior Full Stack Developer (SC Cleared) - 12 Month Contract - Remote
Stealth IT Consulting Limited
UK
From £450 to £500 per day
Strong understanding of API development and microservices
Strong understanding of API development and microservices
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• Strong backend engineering background delivering high-scale systems with AI components (Python/Java, RAG frameworks, vector databases, API engineering).
• Strong backend engineering background delivering high-scale systems with AI components (Python/Java, RAG frameworks, vector databases, API engineering).
My client are seeking a JavaDeveloper with strong expertise in Apache Kafka, Node.js, and AWS cloud services. The role involves designing and implementing scalable, event-driven architectures, building microservices, and deploying solutions in a cloud-native environment. Essential Skills & Experience * Strong commercial experience with Java (core + modern frameworks) * Hands-on experience with Node.js * Proven background delivering solutions in AWS environments * Understanding of microservices, APIs and distributed systems * Experience working in Agile / DevOps environments * Familiarity with CI/CD pipelines and cloud-native tooling * Experience with Kafka Desirable * Previous experience working in public-sector or secure environments
My client are seeking a JavaDeveloper with strong expertise in Apache Kafka, Node.js, and AWS cloud services. The role involves designing and implementing scalable, event-driven architectures, building microservices, and deploying solutions in a cloud-native environment. Essential Skills & Experience * Strong commercial experience with Java (core + modern frameworks) * Hands-on experience with Node.js * Proven background delivering solutions in AWS environments * Understanding of microservices, APIs and distributed systems * Experience working in Agile / DevOps environments * Familiarity with CI/CD pipelines and cloud-native tooling * Experience with Kafka Desirable * Previous experience working in public-sector or secure environments
Java Developer 12 month Contract - 1 Stage Interview
Java Developer 12 month Contract - 1 Stage Interview
Stealth IT Consulting Limited
UK
Up to £400 per day £400 (Inside IR35) Per Day
Role Overview - We are seeking a skilled Java Developer with strong experience across Java, Node.js, and AWS to support large-scale digital transformation projects within a secure public-sector environment. You will join a collaborative engineering team focused on delivering secure, scalable and high-quality services. Key Responsibilities * Develop, maintain and optimise backend services using Java and Node.js * Build and deploy applications on AWS following best practices * Work within an Agile delivery team, contributing to sprints, ceremonies and code reviews * Collaborate with architects, product owners and other engineers to deliver high-impact features * Ensure code quality, security and performance are upheld * Support CI/CD processes, testing and automation - Essential Skills & Experience * Strong commercial experience with Java (core + modern frameworks)
Role Overview - We are seeking a skilled Java Developer with strong experience across Java, Node.js, and AWS to support large-scale digital transformation projects within a secure public-sector environment. You will join a collaborative engineering team focused on delivering secure, scalable and high-quality services. Key Responsibilities * Develop, maintain and optimise backend services using Java and Node.js * Build and deploy applications on AWS following best practices * Work within an Agile delivery team, contributing to sprints, ceremonies and code reviews * Collaborate with architects, product owners and other engineers to deliver high-impact features * Ensure code quality, security and performance are upheld * Support CI/CD processes, testing and automation - Essential Skills & Experience * Strong commercial experience with Java (core + modern frameworks)
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QA Tester - Python/Gherkin/BDD - SC Cleared
QA Tester - Python/Gherkin/BDD - SC Cleared
Hays
UK
£450.0 - £500.0 per annum + £450 - £500 inside IR35
Your new company - One of the largest Public Sector Organisations in the UK managing trade - Your new role - What you'll need to succeed - We are supporting a client in seeking an experienced Quality Assurance (QA) contractor to help design, build, and operationalise robust testing capabilities across our web application stack. You will play a key role in ensuring the reliability, performance, and security of our systems, which include a Django/Wagtail CMS backend, microservices architecture, and a modern JavaScript/CSS frontend. You will develop and execute comprehensive test strategies, covering both manual and automated testing. This is a strategic and technical role, with a strong emphasis on quality uplift, process definition, and knowledge transfer across the team. You will be instrumental in validating deployments across multiple environments, supporting Agile
Your new company - One of the largest Public Sector Organisations in the UK managing trade - Your new role - What you'll need to succeed - We are supporting a client in seeking an experienced Quality Assurance (QA) contractor to help design, build, and operationalise robust testing capabilities across our web application stack. You will play a key role in ensuring the reliability, performance, and security of our systems, which include a Django/Wagtail CMS backend, microservices architecture, and a modern JavaScript/CSS frontend. You will develop and execute comprehensive test strategies, covering both manual and automated testing. This is a strategic and technical role, with a strong emphasis on quality uplift, process definition, and knowledge transfer across the team. You will be instrumental in validating deployments across multiple environments, supporting Agile
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Job Title: Product Security Architect (Contract) Location: UK-based / Remote - Contract: 3 months initially, Outside IR35 - Why Apply? This is an opportunity to play a key role in shaping Product Security for an international technology organisation. The role offers exposure to a federated environment across multiple business units, providing strategic influence and hands on technical impact. * Define, lead, and evolve a group-wide Product Security and Secure SSDLC strategy across all business units. * Assess current AppSec capabilities, identify gaps, and implement practical, scalable improvements. * Collaborate with Product Architects, engineering, and security teams to integrate security into GitHub, CI/CD pipelines, and development workflows. * Provide architecture guidance and implement secure coding practices, threat modelling, and security tooling.
Job Title: Product Security Architect (Contract) Location: UK-based / Remote - Contract: 3 months initially, Outside IR35 - Why Apply? This is an opportunity to play a key role in shaping Product Security for an international technology organisation. The role offers exposure to a federated environment across multiple business units, providing strategic influence and hands on technical impact. * Define, lead, and evolve a group-wide Product Security and Secure SSDLC strategy across all business units. * Assess current AppSec capabilities, identify gaps, and implement practical, scalable improvements. * Collaborate with Product Architects, engineering, and security teams to integrate security into GitHub, CI/CD pipelines, and development workflows. * Provide architecture guidance and implement secure coding practices, threat modelling, and security tooling.