1 to 25 of 154 API Testing Jobs in London

of scalable and maintainable test automation frameworks. Define and enforce best practices for test automation across teams and projects. Collaborate with development, DevOps, and QA teams to integrate automated testing into CI/CD pipelines. Mentor and guide QA engineers and automation testers, providing technical leadership and training. Evaluate and recommend new tools, technologies, and processes to improve test … progress, quality metrics, and risks to stakeholders. Required Qualifications: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field. 7+ years of experience in software testing, with at least 4 years in test automation. Proven experience leading test automation initiatives and teams. Expertise in automation tools such as Selenium, Cypress, Playwright, Appium, TestNG, JUnit, etc. … Strong understanding of CI/CD tools (e.g., Jenkins, GitLab CI, Azure DevOps). Experience with API testing tools (e.g., Postman, RestAssured). Familiarity with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes). Excellent problem-solving, communication, and leadership skills. Preferred Qualifications: ISTQB or equivalent certification. Experience with performance testing tools (e.g., JMeter, Gatling). More ❯

solver with a knack for uncovering bugs and optimising software quality, this is your chance to make an impact and grow your career. What You’ll Be Doing Automation Testing Develop, maintain, and execute automated test scripts using UI automation tools (preferably Selenium). Focus on programming in C# (preferred), though experience in Python, Java, or other languages is … acceptable. Collaborate with developers to integrate automated tests into the development process and CI/CD pipelines. Manual Testing Conduct thorough manual testing to validate software functionality and user experience. Write and execute detailed test cases and plans across various platforms. Identify, track, and document defects using our established bug tracking tools. What We’re Looking For Must … C# with Selenium. Familiarity with design patterns and best practices in C#. Bonus Points For Exposure to CI/CD pipelines (GitHub Actions, Azure, Jenkins, etc.). Experience with API testing tools like Postman, Insomnia, or curl. Exposure to performance testing tools. Who You Are Independent and Proactive: You’re comfortable taking the lead and researching solutions More ❯

ability to enable others to deliver genomic healthcare and conduct genomic research. We are accelerating our impact and working with patients, doctors, scientists, government and industry to improve genomic testing, and help researchers access the health data and technology they need to make new medical discoveries and create more effective, targeted medicines for everybody. Job Description Are you passionate … new Test Enablement team, you'll have the opportunity to work with your peers in product teams to help them solve their quality-assurance challenges. You will build reusable testing tools and automation, help to make strategic tooling choices, establish quality-assurance Golden Paths, and work towards maturing our testing practices across the organisation. You will look at … the big picture problems that come with testing complex, distributed applications in a regulated industry, and you will work to improve the reliability and speed of our software delivery through accelerated and optimised testing. In this role, you’ll work in partnership with engineers in product squads to test and evolve common solutions. You will experiment with alternative strategies More ❯

hands-on Quality Engineers (QEs) to join our growing FinTech/EngTech crossover team. As a key member of our engineering team, you will contribute to the development and testing of innovative software solutions that support the transition to a low-carbon future. This is an exciting opportunity for individuals who thrive in a collaborative, fast-paced environment and … want to make a real impact on the way we build and deliver high-quality software. Key Responsibilities: Testing Strategy & Execution: Implement and execute comprehensive testing strategies to ensure software quality and reliability across multiple platforms. Automation & Manual Testing: Contribute to the balance of automated and manual testing efforts, ensuring we maintain a strong focus on … quality. Collaboration & Best Practices: Work closely with engineering teams to set quality standards, promote best practices, and ensure adherence to quality metrics throughout the software development lifecycle. Shift-Left Testing: Help implement and advocate for shift-left testing, ensuring teams develop maintainable and reliable automated tests from the earliest stages of development. Tools & Technologies: Collaborate with DevOps and More ❯

days per week in London) Join a Global Tech-Driven Property Marketplace Are you an experienced QA Lead with a passion for driving quality in web and mobile testing? Join a fast-growing, innovative global technology platform that is leading the way in transforming its B2C services. Backed by substantial investment and a financially secure parent company, this is … Actively participate in Agile ceremonies, offering valuable insights and feedback to improve processes and drive continuous improvement. Test Strategy Development: Design and implement robust test strategies, including functional validation, API/interface testing, cross-platform compatibility, negative test cases, and exploratory testing. Regression & Release Testing: Develop and maintain comprehensive regression test suites, ensuring product stability with each … release cycle. Risk-Based Testing: Perform risk-based testing to maximise test coverage while enhancing efficiency. Automation Expertise: Create and maintain scalable test automation scripts, integrating continuous testing seamlessly within CI/CD pipelines to ensure rapid and reliable delivery. Test Suite Execution & Monitoring: Regularly execute automated test suites, ensuring reliable execution, accurate result validation, and quick More ❯

colleagues with high-quality, actionable insights. As a Quality Engineer on this team, you will uphold engineering and quality best practices across our data infrastructure, designing and implementing robust testing strategies to validate scalable data pipelines and ensure data accuracy, integrity, and performance. You will collaborate closely with data engineers, solution architects, product owners, and technical leads to deliver … business insights. This role is ideal for someone passionate about data quality, engineering excellence, and shaping an enterprise-wide data ecosystem. You're Good At Strong knowledge of manual testing & automation development Experience with Agile methodologies and Scaled Agile Proficiency with QA testing frameworks and tools Knowledge of validating streaming data flows and asynchronous processing Python scripting for … test automation of data pipelines, API testing, and custom validations Familiarity with JIRA & Zephyr tools Understanding of Software Development Life Cycle, Testing Life Cycle & Automation test life cycle Knowledge of Java & Automated Testing using Selenium WebDriver, TestNG, and Maven Experience in writing Test Scenarios, Test Cases, executing tests, and defect reporting Experience with Functional, System, Integration More ❯

solutions supporting the transition to a low-carbon future. This role offers an exciting opportunity for collaborative, fast-paced individuals eager to impact software quality and delivery. Key Responsibilities: Testing Strategy & Execution: Develop and implement comprehensive testing strategies to ensure software quality and reliability across platforms. Automation & Manual Testing: Balance automated and manual testing efforts to … optimize efficiency and quality. Collaboration & Best Practices: Work with engineering teams to set quality standards, promote best practices, and monitor quality metrics throughout development. Shift-Left Testing: Advocate for shift-left testing to develop maintainable automated tests early in development. Tools & Technologies: Collaborate with DevOps and Cyber Security teams to integrate testing tools into CI/CD … pipelines. Load & Performance Testing: Conduct load, stress, and spike testing to ensure application performance under heavy loads. Ideal Candidate: Testing Expertise: Experience in front-end and back-end testing, with automation testing skills. API Testing: Skilled in API testing tools like Postman or Insomnia. Programming Skills: Proficiency in Python, C#, or More ❯

Salary: £45,000 to £60,000 DOE 🗣 Language: Fluent Mandarin and English required What You’ll Do: Design, build, and maintain test automation frameworks Lead regression, integration, and performance testing Collaborate across DevOps, development, and product teams Integrate tests into CI/CD pipelines Improve testing processes, tools, and documentation Represent QA in stakeholder meetings and demos What … ll Need: 2+ years’ experience in software QA, both manual and automated Strong skills in Selenium, Cypress, Playwright, or similar Scripting knowledge (Java, Python, or JavaScript) Familiarity with performance testing (e.g., JMeter, LoadRunner) CI/CD experience with Jenkins, GitLab CI, or Azure DevOps Solid understanding of databases (Oracle/MySQL) and Linux systems Strong communication and stakeholder management … skills Bonus Points For: Experience with security or performance testing Knowledge of BDD tools (e.g., Cucumber) Familiarity with cloud platforms and containerization (AWS, Docker, etc.) API testing experience (Postman, RestAssured) If you're ready to take your QA career to the next level in a tech-forward environment - we’d love to hear from you. More ❯

Salary: £45,000 to £60,000 DOE 🗣 Language: Fluent Mandarin and English required What You’ll Do: Design, build, and maintain test automation frameworks Lead regression, integration, and performance testing Collaborate across DevOps, development, and product teams Integrate tests into CI/CD pipelines Improve testing processes, tools, and documentation Represent QA in stakeholder meetings and demos What … ll Need: 2+ years’ experience in software QA, both manual and automated Strong skills in Selenium, Cypress, Playwright, or similar Scripting knowledge (Java, Python, or JavaScript) Familiarity with performance testing (e.g., JMeter, LoadRunner) CI/CD experience with Jenkins, GitLab CI, or Azure DevOps Solid understanding of databases (Oracle/MySQL) and Linux systems Strong communication and stakeholder management … skills Bonus Points For: Experience with security or performance testing Knowledge of BDD tools (e.g., Cucumber) Familiarity with cloud platforms and containerization (AWS, Docker, etc.) API testing experience (Postman, RestAssured) If you're ready to take your QA career to the next level in a tech-forward environment - we’d love to hear from you. More ❯

Salary: £45,000 to £60,000 DOE 🗣 Language: Fluent Mandarin and English required What You’ll Do: Design, build, and maintain test automation frameworks Lead regression, integration, and performance testing Collaborate across DevOps, development, and product teams Integrate tests into CI/CD pipelines Improve testing processes, tools, and documentation Represent QA in stakeholder meetings and demos What … ll Need: 2+ years’ experience in software QA, both manual and automated Strong skills in Selenium, Cypress, Playwright, or similar Scripting knowledge (Java, Python, or JavaScript) Familiarity with performance testing (e.g., JMeter, LoadRunner) CI/CD experience with Jenkins, GitLab CI, or Azure DevOps Solid understanding of databases (Oracle/MySQL) and Linux systems Strong communication and stakeholder management … skills Bonus Points For: Experience with security or performance testing Knowledge of BDD tools (e.g., Cucumber) Familiarity with cloud platforms and containerization (AWS, Docker, etc.) API testing experience (Postman, RestAssured) If you're ready to take your QA career to the next level in a tech-forward environment - we’d love to hear from you. More ❯

Salary: £45,000 to £60,000 DOE 🗣 Language: Fluent Mandarin and English required What You’ll Do: Design, build, and maintain test automation frameworks Lead regression, integration, and performance testing Collaborate across DevOps, development, and product teams Integrate tests into CI/CD pipelines Improve testing processes, tools, and documentation Represent QA in stakeholder meetings and demos What … ll Need: 2+ years’ experience in software QA, both manual and automated Strong skills in Selenium, Cypress, Playwright, or similar Scripting knowledge (Java, Python, or JavaScript) Familiarity with performance testing (e.g., JMeter, LoadRunner) CI/CD experience with Jenkins, GitLab CI, or Azure DevOps Solid understanding of databases (Oracle/MySQL) and Linux systems Strong communication and stakeholder management … skills Bonus Points For: Experience with security or performance testing Knowledge of BDD tools (e.g., Cucumber) Familiarity with cloud platforms and containerization (AWS, Docker, etc.) API testing experience (Postman, RestAssured) If you're ready to take your QA career to the next level in a tech-forward environment - we’d love to hear from you. More ❯

just getting started. If you're excited by mission-driven impact, big ideas, and helping define the future of work - join us. WHAT YOU'LL DO Drive and champion testing across key areas of our web, mobile and desktop applications - including AI powered features such as smart assistants, chat interfaces and smart recommendations. Advocate for the user experience by … escalating UX inconsistencies, friction points, or confusing AI behaviours. Design and maintain test strategies and plans that ensure high quality across Kadence's software stack, with tailored approaches for testing deterministic and non-deterministic systems (e.g. LLM based workflows). Execute test cases, analyse results, and clearly report bugs and errors. Collaborate closely with cross-functional teams including engineers … through resolution. Contribute to technical discussions and help shape our approach to quality engineering. Debug and troubleshoot complex issues and provide clear defect documentation. Conduct post-release and regression testing to ensure ongoing stability. Create and maintain internal documentation for testing processes, including expected AI behaviour and edge case handling. WHAT YOU BRING Solid experience as a QA More ❯

you'll be doing: You will join a highly focused quality engineering team that drives value for clients through an engineering-led approach. Your responsibilities include ensuring Shift-Left Testing, supporting various testing types with frameworks like WebdriverIO, Cypress, and Playwright, mentoring team members, and continuously improving quality metrics such as defect density, test pass rate, and mean … OOP principles Experience working in Agile teams, designing automated tests, and ensuring test coverage Ability to collaborate with developers and understand CI/CD pipelines Knowledge of non-functional testing aspects like performance, security, accessibility Familiarity with command line operations, code review, and version control workflows Experience with BDD, API testing, web UI testing, and cross … domain applications including cloud and web apps Additional skills such as mobile automation and contract testing are a plus Nice to have: Experience with CI/CD tools like GitHub Actions, Jenkins, Azure DevOps, GitLab AWS experience Experience with Cypress, Playwright, Webdriver.io, and Selenium Knowledge of Contract Testing frameworks like PACT Experience setting up E2E testing frameworks More ❯

Python (Pandas, Numpy, Requests, Boto3) Experience creating automation frameworks using Selenium (Python) and tools to support test automation for web applications Experience working with Postman, SOAPUI, GraphQL or similar API testing tools Strong hands-on experience in APIs, webservices and Microservices. Experience with processes and deliverables in an Agile/SCRUM environment What Would Make You Stand Out … Delivery/Deployment concepts and CI tools like Jenkins/Bamboo/Github, etc. Financial domain experience is a plus Exposure to BDD concepts, including enhanced acceptance criteria and testing practices Exposure to Code quality metrics, and shift-left principles Exposure to the financial industry domain and data platforms (data warehouses, data lakes) Why Choose Fitch Hybrid Work Environment More ❯

active customers a personalized shopping experience with multiple delivery methods and payment options. eCommerce is the biggest department at Next, based across multiple sites and countries, working across development, testing, support, architecture, and more to stay ahead. About the Team We work in one of the largest QA teams in the country, comprising Manual and Automation Testers of various … our growing eCommerce team and play a crucial role in driving Next forward in a fast-paced retail environment. You should have extensive experience in both automation and manual testing to implement diverse test strategies across our web and mobile applications. You will work on various projects on our eCommerce platform, significantly contributing to departmental progress. Your expertise in … write automated tests (including unit and integration tests), and test across multiple platforms. You will also build automation frameworks from scratch, working with different tools and architectures to enhance testing scripts and ensure comprehensive coverage. You will collaborate with functional and non-functional testing, security, and API testing disciplines. Essential Criteria Extensive experience with test automation More ❯

as a liaison for our infrastructure and developer experience teams. Implement and maintain continuous integration (CI) and continuous deployment (CD) pipelines for automated testing. Develop and execute a comprehensive testing strategy for our blockchain solutions, encompassing functional, performance, security, and integration testing. Develop and maintain automated test scripts using relevant testing frameworks and tools. Conduct manual testing when necessary, including exploratory testing, regression testing, and ad-hoc testing. Identify, report, and track defects to resolution. Perform root cause analysis of defects and work with development teams to implement timely solutions. Set up and maintain test environments, including test data and test configurations. Plan and conduct performance testing to assess scalability, reliability, and responsiveness … s degree in computer science, software engineering, or a related field (advanced degrees are a plus). Proven experience as an SDET or in a similar quality assurance/testing role. Experience of agile methodologies. Experience with modern testing frameworks. Experience in test automation for front-end/back-end and end-to-end systems. Experience working with More ❯

business' software system end points; Provides input on functional requirements and advises on design and configuration of client software applications; Ensures delivery of testable requirements and effectively applies appropriate testing techniques to ensure comprehensive end-to-end black box testing; Leads user story and test case development, and test execution; Designs, develops, documents and maintains test artifacts for … functional, integration, system, and acceptance testing; Creates test plans outlining test approach and risk mitigation; Prepares and may oversee the preparation of test data and readiness of test environment prior to test execution; Create & executes automated tests. Generates reporting and defines action plans based on their status; Analyses test results to identify defects, errors and configuration issues, and advises … customer service and collaboration abilities. QUALIFICATIONS 3+ years QA automation experience supporting large, critical business applications; 5+ years QA experience with Test and Issues Management Tools (JIRA, Azure DevOps); Testing Activities, Manual and Automated Testing Procedures and Tools; Solutions Development Life Cycle in Agile & Waterfall Environments; QA Test Management tools; Creation and execution of SQL Queries involving multiple More ❯

both Java and Javascript for automation testing. You should have experience of working with cloud platforms (Azure preferred, but not essential), a good understanding of agile principles, and software testing best-practices. You will coach more junior QAs and take the lead on test initiatives while working closely with the Team Lead as part of refinement and 3 Amigo … in a multi-tenanted environment. Work with multiple teams to ensure both functional and non-functional requirements are defined and understood, ensuring efficiency in implementation and test. Work on testing our applications to ensure high quality as well as performing load, stress and security testing with the team. Introduce new tools and carry out POCs to drive our … the team. Requirements Strong technical background Analytical and methodical approach Ability to learn quickly and hit the ground running Considerable experience with Selenium, Cypress, Cucumber and JMeter Experience of testing Web Applications, Web Services and Microservices Knowledge of good practices and design patterns in test code Experience in API testing with tools such as Postman and WireMock More ❯

Python (Pandas, Numpy, Requests, Boto3) Experience creating automation frameworks using Selenium (Python) and tools to support test automation for web applications Experience working with Postman, SOAPUI, GraphQL or similar API testing tools Strong hands-on experience in APIs, webservices and Microservices. Experience with processes and deliverables in an Agile/SCRUM environment What Would Make You Stand Out … Delivery/Deployment concepts and CI tools like Jenkins/Bamboo/Github, etc. Financial domain experience is a plus Exposure to BDD concepts, including enhanced acceptance criteria and testing practices Exposure to Code quality metrics, and shift-left principles Exposure to the financial industry domain and data platforms (data warehouses, data lakes) Why Choose Fitch: Hybrid Work Environment More ❯

Role We are looking for experienced Automation Test Engineers/SDET to work on projects with our clients from both the public and private sectors. You will have a testing background and be confident using your skills to run projects directly with clients with minimal supervision. You will be a fundamental member of the team, responsible for designing, developing … to accommodate unique team requirements. Initiating and establishing processes for automation and performance monitoring. Actively contributing to both our Quality Engineering teams and our clients in establishing Automation and Testing best practices for the organisation. Collaborating with various teams to address their automation challenges and coordinating efforts with diverse teams to resolve performance test failures. Key Skills & Experience Excellent … and troubleshooting skills as well as thrive in a dynamic work environment. In depth understanding of QA process and software development life-cycle. Proven experience with current front-end testing frameworks and tools, like Cypress or Playwright. Hands-on experience of building test automation frameworks from scratch. Proficiency in scripting and programming languages such as JavaScript and TypeScript (3+years More ❯

years' hands-on automation experience Other Requirements: Strong with Playwright (preferred) or Selenium/Cypress and one scripting language (JS/TS, Python or Java) Familiarity with AI-based testing platforms Solid API testing & SQL skills; sound grasp of STLC and defect management Clear communicator with sharp analytical instincts Nice to have: BDD (Cucumber/SpecFlow), performance … testing (JMeter/LoadRunner), TestRail/Zephyr, ML model validation Responsibilities: Build & maintain automation with Playwright, Selenium, Cypress or equivalent Super-charge coverage using AI-powered tools Create, run and optimize manual, API (Postman/Rest Assured) and database (SQL) tests Triage results, file defects in Jira, and drive them to closure Full-Stack AI Software Engineer (Junior More ❯

opportunity for the right person. The job Collaborating with team, product, and other stakeholders to understand requirements, and deliver quality solutions that meet acceptance criteria. Analyse functionality to decide testing coverage, identifying which areas can be automated. Creation of tests scenarios following Gherkin Syntax. Perform manual testing for areas not automated. Mentoring more junior members of the team. … The ideal candidate Experience with Web automation frameworks (Selenium, Playwright). JMeter or any other Performance testing framework Tech stack: .NET, ASP.NET , MSSQL, VB6 Infrastructure and CI/CD: Azure/Azure Pipelines and DevOps Wealth of API Testing experience (Postman) Knowledge of Testing Best Practices and BDD. Excellent communication and collaboration skills. Used to working More ❯

the right person. The job . . Collaborating with team, product, and other stakeholders to understand requirements, and deliver quality solutions that meet acceptance criteria. Analyse functionality to decide testing coverage, identifying which areas can be automated Creation of tests scenarios following Gherkin Syntax Perform manual testing for areas not automated Mentoring more junior members of the team … The ideal candidate . . Experience with Web automation frameworks (Selenium, Playwright) JMeter or any other Performance testing framework Tech stack: .NET, ASP.NET, MSSQL, VB6 Infrastructure and CI/CD: Azure/Azure Pipelines and DevOps Wealth of API Testing experience (Postman) Knowledge of Testing Best Practices and BDD Excellent communication and collaboration skills Used to More ❯

risk and prevent software issues. Key Responsibilities Test technical solutions including complex components, whilst maintaining quality standards. Collaborate closely with other team members and departments. Execute all levels of testing (System, Integration, and Regression). Analyse user stories and/or use cases/requirements for validity and feasibility. Mentor team members in an open, respectful, flexible and empathetic … schedules are met. Ensure technical products are tested accurately, based on best practice standards, and on time to help support business objectives. Make suggestions to improve and support the testing lifecycle. Produce high-quality test plans, documentation and reports as required and complex test scripts. Document bug replication steps clearly, along with additional relevant information. Can set up complex … and productivity. Be willing to listen to and support colleagues, devoting time to sharing knowledge, infusing confidence, and expressing positive expectations. Key Skills, Experience & Qualifications Previous experience with automated testing tools for web applications, preferably Python with PlayWright. Taking the lead in maintaining the automation test suites Previous experience of working in a manual testing role in a More ❯

Outdoor parts of the business. In this role, you will test software to ensure functionality, performance, and reliability meet high standards. You will contribute to comprehensive end-to-end testing across the front-end (React.js) and back-end (Java). You will automate test scripts for regression and performance testing. We are a friendly, close-knit team working in … a QA Engineer at Global, you will: Key Responsibilities Design, implement, and manage both automated and manual test cases for web applications and APIs Conduct comprehensive end-to-end testing across the front-end (React.js), back-end (Java), and automate these end-to-end scripts in Playwright (JavaScript) and Java Identify, document, and monitor bugs and performance issues, working … closely with developers to resolve them Collaborate with the platform team and integrate automated testing within CI/CD pipelines Promote and implement best practices for QA methodologies, tools, and processes within an agile environment What You’ll Love About This Role Think big – Strive to do what hasn’t been done before Own it – Take pride in what More ❯