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    Full Stack Engineer: Web & API Platform (Remote)

    A modern rental platform based in the UK is seeking a Full-Stack Engineer to design and develop scalable web applications and APIs that enhance the booking experience. The ideal candidate will have strong skills in Node.js, React, and AWS serverless technologies. You will be key in creating automated workflows a ...

    Full Stack Engineer: Web & API Platform (Remote)

    A technology-driven rental company in Belfast seeks a Full-Stack Engineer to design and scale web applications and APIs. This role focuses on building efficient, innovative systems for instant bookings and intelligent operations. The ideal candidate will have strong skills in Node.js, React, and AWS, with a pass ...

    Remote Senior Go Backend Engineer Payments API

    A fintech company in London is seeking a Senior Backend Engineer to enhance digital payment systems for Africa and Asia. The role involves building scalable services using Go and integrating with payment partners. The ideal candidate has over 5 years of experience and is passionate about innovative financial sol ...

    AI Powered Python API & Data Engineer (Energy)

    A leading energy tech company in London seeks a Software Engineer/Data Engineer to build data presentation layers and stable APIs for complex energy market data. Responsibilities include full lifecycle ownership of projects, designing infrastructure, and ensuring code quality. The ideal candidate has 4+ years of ...

    Backend API Engineer — Python, AWS & Data Pipelines

    A leading advertising and communication agency in Greater London is seeking a Software Developer Back End. The role involves designing and operating scalable APIs and data systems on AWS, while leading a team. Ideal candidates should have strong Python and FastAPI skills, along with experience in CI/CD and AWS s ...

    Enterprise API Solutions Engineer — Pre Sales Leader

    A leading API platform company is looking for an experienced Enterprise Solutions Engineer in the UKI region. You will collaborate with sales and product teams to support enterprise customers by providing technical expertise throughout the sales cycle. Ideal candidates have over 5 years of software engineering e ...

    Boomi Integrations Engineer Real Time API Architect

    Beauty Pie is looking for a Boomi specialist Integrations Engineer to enhance customer-centric integration landscapes. The role involves designing and supporting integrations across eCommerce, mobile, and customer service systems. Candidates should have strong hands-on experience with APIs, real-time data flows, ...

    Hybrid Test Engineer – Quality, Data & API Validation

    A global digital transformation organization seeks a Test Engineer to enhance quality assurance during a significant modernization effort in London. This hybrid role involves working closely with developers and business analysts to ensure the accuracy and stability of applications and data. The ideal candidate w ...

    API Platform Engineer — Scalable Backend (Rust/C++)

    x.ai in Greater London is seeking a backend infrastructure engineer to build the xAI API for developers worldwide. Ideal candidates will have expert knowledge of Rust or C++, experience in designing and maintaining distributed systems, and a strong understanding of observability and reliability. Responsibilities ...

    Test Automation Engineer: API/UI & CI/CD

    A leading tech services firm in Belfast is seeking a Test Automation Engineer to design testing strategies and build automation frameworks for enterprise applications. The successful candidate will work collaboratively with development teams to enhance software quality through advanced testing solutions. Profici ...

    Senior .NET Engineer (C#) – API First, Hybrid

    An established industry player in the automotive sector is seeking a skilled Software Developer to join their team. In this dynamic role, you will be pivotal in transforming their digital product suite, utilizing an API-first approach with .NET and modern front-end technologies like Vue.js. You will adopt best p ...

    Quality Engineer ISO/API, CAPA & Audit Leader

    A leading oil and gas service provider in Great Yarmouth seeks a Quality Engineer responsible for maintaining the Quality Management System (QMS). Key activities include conducting audits, managing NCR and CAPA processes, and ensuring compliance with ISO standards. Ideal candidates will have quality experience, ...

    AI QA Engineer: Web, API & Voice Systems

    Peaple Talent is seeking a QA Engineer in Bristol to enhance the stability and quality of an innovative AI communications platform. In this role, you will collaborate with teams across Backend, Frontend, Telephony, DevOps, and AI to ensure the seamless performance of web applications, APIs, and intelligent voice ...

    Senior Frontend Engineer – API Driven Web Features

    A growing tech company in Greater London is seeking a Senior Frontend Engineer to enhance their web products in the user-data space. You will develop new features and improve existing ones while collaborating with engineers, product, and design teams to deliver polished user experiences. Ideal candidates should ...

    Solutions Engineer: Drive API Solutions & Customer Impact

    A leading technology company in Greater London is seeking a Solutions Engineer to work with global enterprises and tackle complex customer challenges. In this role, you'll leverage your expertise to deliver tailored solutions while partnering with the sales team. As an advocate for the company’s API capabilities ...

    Fintech .NET Core Engineer – Greenfield API & Blockchain

    A well-known fintech company in the City of London is seeking Engineers to join their 30-man flat Dev Team. Candidates should have a degree in Computer Science and strong experience with .Net Core, C#, TypeScript, and Docker. The role involves developing a greenfield blockchain platform and API development while ...

    Cloud Automation Engineer .NET | API Testing & QA

    A healthcare technology company is seeking an Automation Engineer to design and execute automated testing for its software solutions. The role involves collaborating closely with Agile teams and utilizing technologies such as C#, .NET, and Azure. The successful candidate will work in a friendly environment focus ...

    Senior Ruby on Rails & API Integration Engineer

    SeniorSoftwareEngineer/RubyOnRails/React/TypeScript Location:Wallingford-Oxfordshire(Hybrid)-onsiteonceevery4-6weeks Permanent AtDexory,wearetransformingthewarehousingandlogisticsindustrythroughdataintelligence. AsanIntegrationEngineer,youwillplayakeypartin ...

    Quality Engineer — CI/CD, API & Reliability (Hybrid)

    Change Digital – Digital & Tech Recruitment is seeking an experienced Quality Engineer to join a leading client based in Edinburgh. You will thrive on improving software quality and work in a hybrid environment to embed quality across the full SDLC. The ideal candidate has over 5 years of experience in ...

    QA Engineer API & Web Testing (Manual + Automation)

    A global API management company is seeking a QA Engineer to enhance the software development process through manual testing and automation. You'll work in an Agile environment, creating manual tests for web applications while also maintaining the automation framework. Essential skills include extensive manual te ...

    Senior QA Automation Engineer — Shopify & API Testing

    Beauty Pie is seeking a QA Automation Engineer to develop automated test frameworks for their Web and Mobile platforms. This role requires at least 3 years of experience in Test Automation, strong knowledge of APIs, and a proactive approach to testing e-commerce flows like Checkout and Payments. The position off ...

    Senior PHP Backend Engineer Platform & API Specialist

    A leading recruitment agency is seeking a Senior PHP Developer to join their Lincolnshire office. In this role, you will design and maintain scalable backend services, focusing on performance, security, and system reliability. The ideal candidate will have strong experience in PHP and Laravel, with the ability t ...

    AI API Engineer — Greenfield, Hybrid, Azure Stack

    A leading technology company in Birmingham is looking for an API Engineer to build and maintain APIs that connect AI services. As part of a Greenfield project, you will leverage C#, .NET, and SQL to develop secure, scalable APIs that address real customer needs. You'll work with a talented team from day one, sha ...

    Remote Test Automation Engineer API & CI Pipelines

    A software testing consultancy in the UK is seeking a candidate for a remote-oriented role with client visits. The position involves designing API automation solutions and developing CI Test Pipelines using tools like MS Azure and Jenkins. The ideal candidate will improve quality engineering processes and mainta ...

    Remote Data Test Engineer | Ecommerce & API Testing

    pcscs is seeking a skilled Data Test Engineer in Swindon to join an ecommerce-related POC project. In this permanent position, you will be responsible for testing web applications, payment gateway data flows, and conducting integration testing. The ideal candidate should have strong SQL skills, experie ...

    Backend API Engineer | Remote, Equity, Travel Allowance

    Duffel is hiring a Software Engineer to join their team in London. This role is focused on building tools for travel distribution and booking through a seamless API. You will work on the core API that powers millions of travel bookings, ensuring high standards in design and developer experience. This p ...

    Hybrid Remote QA Automation Engineer (Playwright & API)

    A leading technology recruitment agency in England is seeking a QA Engineer with strong experience in C# and automation tools. In this hybrid role, you will contribute significantly to the quality assurance of a Microsoft 365 solution, working within Agile teams to enhance test automation. Candidates should have ...

    Senior Backend Engineer – AI Powered Compliance API

    Adclear is seeking a Senior Backend Engineer to enhance its compliance infrastructure in London. You will be responsible for owning the public API, building integrations with customer tools, and architecting critical infrastructure. The ideal candidate should be proficient in TypeScript, API design, an ...

    Middleware Engineer (Linux/Unix) Enterprise API & Ops

    Gazelle Global is seeking a Middleware Engineer (Linux/Unix) for a position in the UK (Reading, Leeds or London). As a Middleware Resource, you will be part of a dynamic application operations and service delivery team that supports enterprise middleware platforms. Your role will include monitoring, troublesh ...

    Senior Test Engineer: Automation & API Frameworks Lead

    LA International is seeking skilled candidates for a testing role focused on building frameworks and developing automated test scripts. The ideal candidate will have experience with Playwright, Cucumber, and API testing tools like Rest Assured. This role emphasizes a collaborative environment where Agi ...

    GenAI ML Engineer – Deployments & API Systems (Remote)

    A technology recruitment agency is seeking a Machine Learning Engineer for a long-term project in the retail space. The role offers a hybrid working model, requiring strong expertise in machine learning deployments, API development, and cloud platforms like AWS and GCP. The ideal candidate will be able to work e ...

    Senior PHP Integrations Engineer API led & Azure

    Profectus Recruitment is seeking a Senior Developer (Integrations) to join a FTSE250 Wealth Management business in London. In this role, you will develop and support modern applications and integrations across various platforms, focusing on Azure PaaS services and secure API-led solutions. The ideal ca ...

    Solutions Engineer EMESA North AI & API Solutions

    Gravitee is seeking a Solutions Engineer in Greater London to drive technical sales success and partner with customers to meet their API needs. The role focuses on turning technical conversations into successful partnerships and requires strong communication and technical skills. Ideal candidates will ...

    Senior Vue 3 Engineer TypeScript & Composition API

    A progressive tech company in London is seeking a Senior Frontend Software Engineer to lead the development of innovative UI components using Vue 3 and TypeScript. The ideal candidate will have over 5 years of experience in building production-ready applications and must be adept at presenting concepts to stream ...

    Remote Automation Test Engineer Enterprise API Resilience

    Sivara GmbH is looking for an automation tester to design and implement automated test frameworks for UI, API, integration, and end-to-end testing. This role involves developing tests using Playwright and/or Cypress, validating complex integrations, and delivering API testing across multiple services.T ...

    Senior Ruby on Rails & API Integration Engineer

    SeniorSoftwareEngineer/RubyOnRails/React/TypeScriptLocation:Wallingford-Oxfordshire(Hybrid)-onsiteonceevery4-6weeksPermanentAtDexory,wearetransformingthewarehousingandlogisticsindustrythroughdataintelligence.AsanIntegrationEngineer,youwillplayak ...

    Senior API Quality Engineer, Middleware (AI Driven)

    慨正橡扯 is looking for a Senior Quality Engineer in the UK to enhance the reliability of middleware APIs. You will design and execute comprehensive test strategies, including integration and performance testing, using AI-assisted tools like GitHub Copilot.This role is pivotal in ensuring the quality of di ...

    Test Automation Engineer Selenium, API & CI/CD

    HelloKindred is seeking a Test Automation Engineer in Milton Keynes to design, develop, and maintain automation frameworks and solutions for enterprise testing. You will focus on Selenium and API test automation, collaborating with development teams to ensure quality delivery. This hybrid role requires ...

    Remote .NET Developer Greenfield Web/API Engineer

    A leading internet solutions company based in the UK is seeking a .NET Developer to help develop innovative Greenfield software applications. The ideal candidate will possess strong knowledge of .NET, .NET Core, and C#. Opportunities for training in .NET 10.0, C# 14, and other advanced technologies are available ...

    QA Automation Engineer: API Testing with Playwright

    twentyAI is seeking a QA Automation Engineer in Greater London to enhance automation within a leading Financial Services organization. In this role, you'll drive quality engineering practices, working closely with teams to ensure quality assurance is integrated throughout the software development lifecycle. < ...

    Identity & API Engineer — Cloud IAM & Pub/Sub

    A global consulting firm is seeking a highly skilled Application Developer to focus on identity API development within the Google Cloud Platform. The role requires experience in building secure, scalable identity workflows and integrating identity services with APIs and event-driven architectures. Responsibiliti ...

    Founding Backend Engineer for Fintech API Platform

    A regulated fintech company based in Greater London is seeking a Founding Engineer to design and build the core platform. This high-impact role involves owning production systems and shaping technical direction. Candidates should have strong experience with Node.js and PostgreSQL. The role provides an opportunit ...

    Hybrid Automation Test Engineer: API & Data Validation

    A leading software company in London is seeking an Automation Test Engineer to join their team. This hybrid role will involve working onsite 2-3 days per week. The ideal candidate will have a strong background in integration and API testing, solid database knowledge, and the ability to communicate effectively wi ...

    Senior Security Engineer

    About Prolific Prolific is not just another player in the AI space – we are the architects of the human data infrastructure that's reshaping the landscape of AI development. In a world where foundational AI technologies are increasingly commoditized, it's the quality and diversity of human-genera ...

    Senior Software Engineer

    Are you a talented Senior Software Engineer looking for an exciting new challenge? STS Defence is seeking a Senior Software Engineer to join our dynamic Programmes Division in Gosport. As a Senior Software Engineer, you will play a pivotal role in the design, development, and implementation of adva ...

    Platform Engineer – Cloud & Kubernetes

    # Platform Engineer – Cloud & Kubernetes,March 11, 2026### Job Description**Location:** London, UK **Work Model:** On-site **Role Type:** Full-TimeWe are looking for a **Platform Engineer** with strong experience in cloud infrastructure and container orchestration to join our client’s on-site team in London. ...

    Senior Lead Full Stack Software Engineer

    Senior Lead Full Stack Software Engineer – Cybersecurity and Technology Controls As a Senior Lead Full Stack Software Engineer at JPMorgan Chase within Cybersecurity and Technology Controls, you serve as a seasoned member of an engineering team that leads the delivery of software solutions that s ...

    Mid Backend Engineer (Golang)

    Requirements This is an ideal opportunity for a motivated self-starter to accelerate their career, taking a broad and varied role within a rapidly growing company. We pride ourselves on building an inclusive working environment where diversity is celebrated As an Engineer, you sho ...

    Software Development Engineer, Veeqo in Swansea Veeqo Limited

    Software Development Engineer, Veeqo Veeqo Limited | Swansea, United Kingdom Posted 10 months ago Tech Stack C Java Basic Qualifications Experience (non-internship) in professional software development Experience ...

    Senior Java Backend Engineer — Build Scalable Secure Systems

    FanDuel is searching for a Senior Software Engineer - Java in Edinburgh, Scotland. This role involves developing scalable, fault-tolerant backend systems while working within agile teams. Candidates should possess a strong command of Java and related technologies, along with experience in cloud environments. ...

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      Java Software Engineer Cloudnative Api Security Jobs in United Kingdom Job Search Guide, Trends and Insights