1 to 25 of 26 Permanent API Testing Jobs in London

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 ❯

cross- functional teams to define test strategies, create test plans, execute test cases, and identify and report software defects. The ideal candidate will have a strong understanding of software testing methodologies, excellent analytical skills, and a passion for delivering high-quality products. Tech Stack: AWS Serverless Lambda with Node.js API Gateway (REST/JSON) DynamoDB S3 WAF Back … Office Banking Systems API Integration Dynamics 365 CRM React.js (website)/React Native (app) Responsibilities: Collaborate with cross-functional teams to understand project requirements and define test strategies and plans. Develop, document, and maintain detailed test cases and test scripts based on project requirements and functional specifications. Execute manual and automated tests to verify software functionality, performance, usability, and … with the development team to ensure timely resolution. Participate in the review of product requirements, design documents, and specifications to provide input on testability and quality aspects. Perform exploratory testing and provide feedback on user experience and potential usability issues. Conduct regression testing to ensure that software changes and updates do not introduce new defects. Collaborate with software 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 We … with our project. 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 ❯

expectations for QA team members, monitoring performance and providing constructive feedback. 3. Process and Standards: Define and implement robust QA processes, methodologies, and tools to ensure efficient and effective testing practices. Drive the adoption of industry best practices in manual, automated, and performance testing. 4. Product Quality Oversight: Oversee all testing activities across the Investor, Administrator, and Fund … pipelines and other engineering processes. Technical Requirements 1. Experience: At least 7 years in software QA, with 3+ years in a leadership role. Extensive experience with manual and automated testing of web-based applications. 2. Technical Expertise: Proficiency in test automation tools and frameworks (e.g., Selenium, Cypress) and API testing tools (e.g., Postman). Strong understanding of … software testing methodologies, including regression, performance, and security testing. Hands-on experience with CI/CD pipelines and integrating testing processes. Working knowledge of programming languages like Python, Java, or JavaScript is a plus. 3. Tools and Frameworks: Experience with test management tools such as MS Azure DevOps. Familiarity with performance testing tools and practices is advantageous. More ❯

across web and mobile products. What You’ll Be Doing: Be Embedded, Not Isolated: Actively contribute to product development from day one — collaborating with developers and product managers, not testing in a silo. Champion Shift-Left Testing: Ensure quality is considered early in the development lifecycle by helping define, question, and shape user stories and acceptance criteria. Own … Test Strategy: Create and execute end-to-end test plans — covering functional, exploratory, API, UI, and cross-platform testing. Deliver Through Automation: Build and maintain test automation frameworks, integrating them into CI/CD pipelines for fast, reliable releases. Support Distributed Teams: Help level-up the QA capability of international teams, including a growing team in China. Explore How … tools and approaches can streamline QA processes or improve coverage. Contribute to Process: Attend Agile ceremonies, analyse requirements for testability and risk, and continuously seek ways to optimise how testing is done. What We’re Looking For: Hands-On QA Experience - Strong background in manual and automated testing within Agile environments. True Collaboration - Someone who works within dev More ❯

Engineer on the Data Layer Team, you will play a vital role in upholding engineering and quality best practices across our data infrastructure. You will design and implement robust testing strategies to validate scalable data pipelines and ensure data accuracy, integrity, and performance across our platforms. Collaborating closely with data engineers, solution architects, product owners, and technical leads, you … and the opportunity to shape an enterprise-wide data ecosystem, we'd love to have you on our team. You're Good At Should have strong knowledge of manual testing & automation development. Experience with Agile methodology and Scaled Agile. Experience working with QA testing framework and tools. Knowledge of validating streaming data flows and asynchronous processing. Python scripting … experience for test automation of data pipelines, API testing, and custom validations. Knowledge of JIRA & Zephyr tools Possess good understanding of Software Development Life Cycle, Testing Life Cycle & Automation test life cycle Good understanding of Java & Automated Testing using Selenium WebDriver, TestNG and Maven. Hands-on Experience in writing Test Scenarios, Test Cases, Test Execution and 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 ❯

110k About the Role Head Resourcing are recruiting for an experienced QA Test Lead with deep expertise in Playwright, C#, TypeScript, and ReadyAPI. In this role, you will lead testing across multiple products, drive automation strategy, and guide a growing QA team of around 5. You'll work for a consultancy with a client involved in sectors such as … this role does not offer sponsorship. Key Responsibilities Lead QA delivery and test strategy across multiple projects and teams Develop and maintain robust automation frameworks (Playwright - TypeScript, C#) Oversee API and UI test automation using tools like ReadyAPI and Playwright Ensure full scenario coverage, edge case testing, and strong regression validation Create and manage detailed test plans, test … QMetry) Collaborate with developers, business analysts, and DevOps in Agile environments Integrate automation into CI/CD pipelines (e.g. Jenkins, Azure DevOps) Mentor junior QA team members and promote testing best practices Track QA metrics, maintain quality heatmaps, and support release readiness Required Skills 8+ years of experience in manual and automated testing, with extensive leadership experience Strong More ❯

Lead, you will play a critical role in ensuring the quality and reliability of enterprise-scale platform implementations. You will lead QA efforts across functional, automation, and non-functional testing domains, working closely with business, development teams. You will be instrumental in defining test strategies, building automation frameworks, and driving continuous quality improvements aligned with business objectives. At Nikao … Requirements Proven expertise in designing and leading scalable test automation frameworks using tools like Selenium, Playwright, or Cypress integrated within CI/CD pipelines (e.g., Azure DevOps, Jenkins). API & Integration Testing Strong hands-on experience with API testing using Postman or RestAssured, including validation of complex data flows and backend integrations. Cloud & DevOps Proficiency Solid … understanding of cloud-based testing environments (Azure/AWS) and experience with infrastructure-as-code concepts, deployment validation, and environment configuration. Data-Driven Testing & SQL Advanced SQL skills for test data validation, migration testing, and working with large datasets across platforms like PostgreSQL or SQL Server. AI & Next-Gen Testing Tools Exposure to AI-powered testing More ❯

and best practices and embed quality as part of the development process. Alongside the strategic elements of the role, you are well-versed in all aspects of hands-on testing from manual to automation. You help find, debug and assess issues ensuring they are correctly prioritised, and then work with the team through to resolution. You bring a positive … requirements the team works on, identify opportunities ( technical, process, etc ), discuss priorities, and contribute to the design and implementation of solutions with a focus on delivering value. Hands-on testing - We are embracing and moving towards a microservice architecture approach that allows us to rapidly adapt and react to the changing needs of our business. You will be involved … hands-on in the testing and delivery of small iterative releases, automating wherever possible to continually improve efficiency. You are comfortable working independently when required, providing estimates, and reliably working with clear communication to deliver them. Quality Guild - we use Guilds for subject matter experts to get together, share ideas, knowledge, best practices and form standards to keep the More ❯

JobRack is dedicated to connecting businesses with top talent from Eastern Europe. They have an opportunity for an automation testing position designed to help ensure the quality and reliability of their software products. As a crucial part of the development team, you will be responsible for designing, implementing, and executing automation tests. You'll work closely with developers and … other team members to identify testing requirements and improve overall software quality. Your role is essential in helping JobRack maintain its commitment to providing reliable and high-quality solutions to their clients. In this role, you will: Develop and maintain automated test scripts. Execute automated test cases and analyze test results. Collaborate with the development team to identify testing … and performance testing. This is a full-time remote position, offering flexibility and a collaborative work environment. To succeed in this role, you should have: Proven experience in automation testing (3+ years). Proficiency in automation testing tools (e.g., Selenium, TestNG, JUnit). Strong knowledge of programming languages (e.g., Java, Python, C#). Familiarity with CI/CD More ❯

every other Friday off (compressed working). Location: WFH – Ad hoc visit to London HQ/9-day fortnight What You Bring Expertise in mobile/web app and API testing Proficiency in Python or JavaScript for automation Experience with tools like Postman, Selenium, Appium, PyTest, Locust, or K6 Strong Git and CI/CD skills (Azure DevOps More ❯

every other Friday off (compressed working). Location: WFH – Ad hoc visit to London HQ/9-day fortnight What You Bring Expertise in mobile/web app and API testing Proficiency in Python or JavaScript for automation Experience with tools like Postman, Selenium, Appium, PyTest, Locust, or K6 Strong Git and CI/CD skills (Azure DevOps More ❯

The QA Analyst will support Whitespace in continuing to provide quality software to an ever-growing customer base. Thorough and imaginative testing is critical to the success of the Platform. Whitespace takes pride in delivering an excellent, intuitive customer experience at a pace its competitors cannot match. This role requires someone who can grow and adapt with the company … who is eager to learn and progress a career within the Platform team. Full training on in-house and industry-specific systems will be provided. Main Responsibilities: Testing Scripted end-to-end testing of existing functionality, especially where that functionality is not yet incorporated into automated test scripts. Validation of issues found during testing to determine regressions … or pre-existing issues. Scripted end-to-end testing of new functionality. Exploratory testing based on business scenarios, including initial testing of new functionality following first release from development. Re-testing of issues as fixes become available. Capturing testing evidence (test steps, screenshots, videos) in line with Whitespace testing guidelines. Discussing issues with Business More ❯

and automated tests to ensure product excellence. You'll work closely with cross-functional teams to identify test requirements, mentor junior QA engineers, and contribute to continuous improvement in testing practices. Key Responsibilities Review requirements and technical designs to provide timely feedback. Create and maintain detailed test plans and test cases. Design and implement automation scripts using open-source … tools. Identify, document, and track bugs thoroughly. Perform regression testing and troubleshoot quality issues. Mentor junior QA engineers and oversee test documentation. Recommend improvements to enhance product quality and team productivity. What We're Looking For 4+ years of experience in QA Automation or a related role. Strong understanding of QA methodologies, tools, and processes. Proficiency in test automation … tools (e.g., Selenium, Playwright). Experience with REST API testing and scripting in Python, JavaScript, TypeScript, or Bash. Familiarity with Agile/Scrum environments and tools like Jira and Xray. A degree in Computer Science, Engineering, or a related field. Solid knowledge of operating systems, vitalisation, storage, and networking. Why Join Us? Fully remote working environment. Competitive salary More ❯

Inside IR35 Start Date: ASAP About the Role: I'm seeking a Contract Test Manager with proven experience delivering iPaaS (Integration Platform as a Service) projects to lead the testing workstream of a critical enterprise integration programme. This is a hands-on role requiring a strategic thinker who can drive quality across complex integrations between cloud-based systems, SaaS … to-end functionality. Key Responsibilities: Define and manage the test strategy and plans for iPaaS integrations (e.g., MuleSoft, Boomi, Workato, or similar). Coordinate functional, integration, performance, and regression testing across multiple systems. Liaise with developers, integration architects, business analysts, and stakeholders to understand requirements and drive test coverage. Design test cases and manage test data, environments, and automation … on complex integration projects , ideally with iPaaS platforms (MuleSoft, Boomi, Azure Logic Apps, etc.). Strong knowledge of integration patterns , data validation, and exception handling. Hands-on experience with API testing tools (e.g., Postman, SoapUI) and automation frameworks. Familiarity with Agile/Hybrid delivery environments and tools such as JIRA, Confluence, and Azure DevOps. Exceptional stakeholder management and More ❯

a crucial role in safeguarding the quality and reliability of our cutting-edge low-code/no-code supply chain platform. Your attention to detail and structured approach to testing will help ensure that our platform delivers intuitive, error-free experiences for users - from logistics managers to sustainability analysts - across complex global supply chains. In this role, you'll … Execute manual tests to validate business rules, workflows, and usability across low-code configurations. Contribute to regression, smoke, and exploratory testing to ensure consistent platform stability. Create, maintain, and manage manual test scripts for consistent execution and test reliability. Collaborate closely with engineers, business architects, and technologists to define clear acceptance criteria and support Agile sprint activities. Detect, document … and track software defects clearly, contributing to continuous improvement and detailed release notes. Offer usability insights that inform better platform design, based on your testing outcomes and user empathy. Support the team in automating tests, managing automated test scripts, and iterating testing processes for scale and sustainability. By identifying issues before they affect real-world operations, you'll More ❯

Role : Mainframe Test Lead Location : London Work Mode : Hybrid Job Description: The objective of this role is to validate the Test coverage and Testing evidence that the upgrades made to DB2, IMS, MQ Subsystems do not impact the application functionality. In addition to the above, the role requires to identify the application regression test cases associated to the below … subsystems, hence a deep understanding of the Mainframe systems i.e. DB2, IMS, MQ, COBOL, JCL are essential. Key Responsibilities: Lead end-to-end testing efforts for mainframe applications and APIs. Design and implement testing approach, Test plan, and Review Test cases for mainframe systems involving IMS and MQ. Collaborate with development, business, and QA teams to understand requirements … and ensure test coverage. Perform integration testing involving APIs, IMS transactions, and MQ messaging. Automate test cases where applicable and manage test data. Identify, document, and track defects using tools like JIRA or HP ALM. Ensure compliance with quality standards and best practices. Required Skills: Strong experience in mainframe testing (COBOL, JCL, DB2). Hands-on experience with More ❯

and log results in agile test planning tools like qTest, TestRail, or similar platforms. Perform a variety of tests, such as Smoke/Sanity, Functional/Non-Functional, Regression, API, Database, and Performance Testing, in accordance with established test plans or strategies. Investigate and oversee application logs to identify issues along with managing defects meticulously using tools such … quality champion for your area of functional expertise. Support the deployment of all product releases, fix packs, hot fixes, and provide troubleshooting for client issues. Ensure consistent communication of testing milestones and progress by delivering regular and precise updates in a timely manner. Maintain a positive and professional demeanor, demonstrating a strong commitment to achieving organizational goals through dedicated … work ethic. Guide and educate junior QA engineers or trainees on quality assurance practices and product knowledge. Required Skills & Experience : 2-3 years of Quality Assurance experience in testing for Web and Mobile Applications, as well as Web Services, ideally within a SaaS framework. A proven track record in testing GUI and functional user workflows, going beyond basic More ❯

testability and embed quality early in the development process. Lead cross-functional quality initiatives to improve CI/CD pipelines, observability, and release readiness. Drive performance, load, and resilience testing , especially for latency-sensitive, real-time systems. Mentor other SDETs and developers in automation strategy, debugging, and risk mitigation. Own root cause analysis for complex, system-level issues - using … roles . Advanced proficiency in Python , Java , C# , JavaScript , or Go . Strong experience building and scaling test automation frameworks and developer-focused tools. Deep understanding of distributed systems , API testing , and CI/CD pipelines . Hands-on experience testing AI/ML-powered systems , real-time services , or multi-modal UIs . Track record of More ❯

SDET to join their team. Key Responsibilities: Lead and manage a small team of SDETs, including recruitment and onboarding Mentor junior and senior SDETs to grow their technical and testing capabilities Drive test automation strategies and team planning for complex software systems Collaborate cross-functionally to document and maintain scalable automation frameworks Advocate Agile best practices throughout the development … lifecycle Provide training sessions on automation tools, frameworks, and testing methodologies Technical Requirements: Strong coding skills in Java Hands-on experience with: Selenium WebDriver for UI automation JMeter for performance testing RESTful APIs testing Agile/Scrum methodologies What You Bring: Proven experience leading/managing small technical teams Strong background in automation testing and test More ❯

services and the pubic sector This specific project is supporting a multinational Consumer Goods company who are building a new AI data platform You will be responsible for automated testing of Microsoft Dynamics & Power Platform solutions, as well as writing and executing manual test cases where required too. You will be involved in the maintenance and evolution of frameworks … automation test suites, applying best practice standards to all you do You must have knowledge and exposure to the capabilities of AI, how it can be used to benefit testing and automated testing as well as how to carry out testing of AI solutions and the ability to integrate that into an automation capability Must have experience … in testing one or more of the following: Minimum of 3 years' experience in both manual and automated testing at all levels ISTQB Certification (Foundation or Advanced) Manual and automated testing of Microsoft Dynamics and Power Platform solutions Familiar with test and bug management tools and processes, ideally Azure Dev Ops (ADO) Hands-on experience with API More ❯

test plans and suites that approximate real-world environments and regression tests driving the software development process toward quality-centric methodologies. You will develop automated tests to help fasten testing cycles and release faster to our customers. In this role, you will be responsible to deliver manual/automated solutions to test customer facing features. As innovators we embrace … release high quality software to our customers. BASIC QUALIFICATIONS - BS in Computer Science or equivalent combination of technical education and work experience - QA experience within Industry - Experience in automation testing using Python - Excellent knowledge of testing methodologies - Experience in writing test documentation PREFERRED QUALIFICATIONS - Experience with DB and SQL - Experience with API testing (Postman) - Experience in More ❯

Key Requirements: Solid experience in QA (Manual and Automation) in a Financial Services environment (Ideally Trading) Depth of knowledge on automation. Expertise with ReadAPI, SpecFlow, and Test Complete for API automation. Strong experience in maintaining automated regression packs and contributing to sprint testing. Ideally we are looking for a mix of skills around C#, Javascript, Playwright, API Testing More ❯

the opportunity to work across a wide range of engagements, thanks to the trust and scale of our clients. You will get hands-on experience with web application and API testing, Wireless assessments, Internal infrastructure tests, Mobile App security, Red and Purple team operations, Physical intrusion testing, hardware analysis, and more. No two projects are quite the … services to organisations we work with. We are seeking a highly skilled and experienced offensive security penetration tester to join our dynamic team. This role involves conducting sophisticated penetration testing and red team engagements across various client systems and applications. The successful candidate will be instrumental in identifying vulnerabilities, enhancing client security postures, and leading initiatives to develop cutting … edge penetration testing methodologies and tools. Clients across industries and geographies, staying at the forefront of knowledge of the threat landscape, cyber defence best practices and regulatory expectations. Requirements : • Strict Requirement: Strong certification in penetration testing such as OSCP (Offensive Security Certified Professional), CTM (Check Team Member), CRT (CREST Registered Tester) and OSWA (Offensive Security Web Attacks) or More ❯