API Testing Jobs in the UK

101 to 125 of 368 API Testing Jobs in the UK

Senior Test Engineer

London, United Kingdom
NHS
exciting time as we transform and innovate our QA process, ensuring our solutions are robust, scalable, and secure. We are seeking a senior test engineer with cloud and automation testing expertise to implement and maintain testing frameworks for our applications and services.Experience in technologies (or similar) .NET applications PHP Framework; Selenium; Playwright; BDD Test automation for cloud-based … technology APi Testing You will be joining a team where your ideas and expertise are valued. You will apply best practices to deliver quality and reliable software services and collaborate with DevOps and operational teams to integrate testing into the CI/CD pipeline. Main duties of the job This role is part of the IT Operations … delivery.At this role level, you will: Identify and raise awareness of risks arising from the automation test results. Identify new and implement existing test frameworks to improve confidence in testing Be proficient in a range of coding languages (you may be an expert in only one) Mentor and advise other team members in testing practices About us At More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Performance Test Engineer

Southampton, Hampshire, United Kingdom
Hybrid / WFH Options
NICE
process. How will you make an impact? Understanding the functional and non-functional requirements Evaluating the objectives of the service level agreement Designing the test scripts Identifying parameter for testing Executing performance runs Using consistent metrics for monitoring Identifying bottlenecks, and where they occur Interpreting results and graphs Understand describe the relationship between queues and sub-systems. Identify suggestions … for performance tuning. Preparing the test report Qualifications Demonstrated capability to drive out Test Strategies in a global organization and to oversee the testing team activities and initiatives for best practices. Have you got what it takes? At least 10+ years' experience in Performance Testing, software R&D and/or System support/engineering Experience in Performance … Testing web applications, services and support architectural assets thru using solutions such as K6, LoadRunner & JMeter Strong understanding of the Database architecture and concepts Solid understanding of cloud based web application architectures. Have ability to run and enhance data generation tooling. Have significant experience of automating tests and test environments. Have practical knowledge of C#, Web API testing More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
Jet2.com and Jet2holidays
scale well. Event driven architectures (Kafka) Modern reactive JavaScript Frameworks (React, Next.js, Vue.js, Angular) Advanced web topologies (Headless, Jamstack) Storage technologies like SQL, Redis and SOLR Automated UI and API testing (BDD, Selenium) Cloud technologies (Azure/AWS/GCP) Containerised environments using Kubernetes, Docker and CI/CD pipelines. Join us as we redefine travel experiences and More ❯
Posted:

QA Engineer

England, United Kingdom
Hybrid / WFH Options
Computerworld Personnel Ltd
and maintains excellent standards and best practice in testing. You will be working within a scrum team, identifying opportunities to enhance efficiency. You will be involved with black box testing, exploratory testing, database testing, API testing, UI Testing, performance testing, Security testing, Usability testing amongst others. The successful candidate will be … a confident communicator that promotes excellence and puts quality first. This is an environment where quality is absolutely key, and the business appreciates the importance of testing as a function to ensure the products are ready for release. There is an auto team who you will communicate and collaborate with for increasing efficiency, but your role is manually focused. … Functional experience Identify opportunities for automation to increase efficiency Maintain test environments Essential: Manual automation experience - at least 3 years minimum, ideally 5 years or more Experience with various testing types - Black box, Regression, Smoke, Exploratory, Database testing, API testing and more. Experience in root cause analysis of issues. Confident communication - being an advocate for best More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Quality Assurance Automation Lead

Cardiff, Wales, United Kingdom
JR United Kingdom
global insurance firm, ranked in the top 10 worldwide, as they expand their technology team. We’re seeking a Quality Engineering Automation Lead to spearhead automation strategy, develop robust testing frameworks, and champion best practices across the engineering function. This role offers a blend of technical leadership and hands-on delivery—perfect for someone passionate about quality, innovation, and … team development. Automation Tools: Proficient with Katalon (certified preferred), Selenium, Appium, Cucumber, TestNG, JUnit API Testing: Experienced with REST Assured, SOAP, Web APIs DevOps & CI/CD: Strong knowledge of Jenkins, Azure DevOps, Git, Maven Testing Approaches: BDD, continuous testing, performance testing (JMeter) Cloud: Familiar with Azure integration services Experience: 10+ years in automation, large … scale frameworks, Agile/DevOps teams Key Responsibilities: Design and maintain robust automation frameworks for UI, API, and performance testing Embed automated testing in CI/CD pipelines for fast, reliable delivery Promote automation practices across teams and lead adoption Mentor engineers on tools, techniques, and best practices Define and report on test coverage and quality metrics More ❯
Posted:

Principal Automation Engineer

Crawley, England, United Kingdom
Hybrid / WFH Options
James Chase
Can you build and embed robust automation across CI/CD pipelines? Are you confident with tools like Playwright, Postman, and Azure? Ready to mentor QA teams and set testing standards in a modern DevOps environment? If you're nodding "yes" — this Principal Automation Engineer role is calling your name. Our client, a leading provider of financial services are … Automation Engineer to join their team on a permanent basis. What you’ll do: Design and deliver robust automation and test strategies Lead test automation using Playwright. Integrate automated testing across CI/CD pipelines Drive performance testing (Azure JMeter) and API testing (Postman) Lead load, cross-browser, and device testing via Browserstack What you … ll bring: Experience in automated testing frameworks (Playwright essential) Coding background in C#, SQL Experience with microservices, containers, and Microsoft Dynamics365 Understanding of the full SDLC in Agile/DevOps environments Experience with cloud-based test design (Azure preferred) Ready to join a dynamic team? Apply now or send your CV to Chinmaye.ramnath@james-chase.com *This role is hybrid More ❯
Posted:

Test Analyst

Edinburgh, Scotland, United Kingdom
JR United Kingdom
Location: Edinburgh, United Kingdom Job Category: Other EU Work Permit Required: Yes Job Views: 2 Posted: 23.05.2025 Expiry Date: 07.07.2025 Job Description: Minimum 7+ years of experience in Manual Testing, with knowledge of automation testing and testing tools like Selenium or others. Experience testing on IBM WebSphere, Java, JSON, XML, and API testing using More ❯
Posted:

QA Engineer

England, United Kingdom
Hybrid / WFH Options
Foundations Executive Search
key role in ensuring the quality and reliability of a broad suite of digital products. Working within a collaborative Agile environment, you'll contribute to the end-to-end testing process-from test planning to execution-ensuring that every product release meets the high standards expected by customers and stakeholders. The Opportunity This is a hands-on, detail-oriented … role for someone passionate about quality assurance. You'll work alongside Product Managers, Developers and DevOps teams, testing a range of web, mobile, and backend applications. Your work will have a direct impact on customer experience, data integrity, and system performance across products used by millions of transport users. You'll be joining a forward-thinking, product-led business … first thinking. Key Responsibilities Test Planning & Preparation Analyse technical and functional requirements to define comprehensive test plans and scenarios Design detailed test cases and scripts across manual and automated testing environments Ensure full test coverage across feature development and product enhancements Test Execution Perform manual and automated testing of web, mobile and API-based platforms Execute functional More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Tester

England, United Kingdom
iO Associates
reliability of software that directly impacts patient care and clinical workflows . What You'll Be Doing Design, write, and execute manual and automated test cases Test across UI, API, database, and backend layers Work in an Agile team alongside developers, product owners, and other QA engineers Use tools like Postman, SoapUI, SQL , Azure DevOps and other Automaion tools … Perform exploratory, functional, and non-functional testing Collaborate with the wider team on test planning, bug triage, and release readiness Provide mentorship and share best practices across teams What We're Looking For 3+ years' experience in software testing , including automation Strong knowledge of test frameworks and test planning Hands-on experience with: SmartBear TestComplete Postman/SoapUI … API testing) SQL for backend verification Azure DevOps or similar for CI/CD Knowledge of Agile methodologies and full SDLC processes Experience in regulated environments (e.g., medical, finance, aerospace) is a plus ISTQB certification or equivalent is advantageous Comfortable working independently and as part of a cross-functional team Working Environment Flexible hybrid setup (part-remote, part More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior QA Engineer

London, England, United Kingdom
Hybrid / WFH Options
Digitalent Recruitment Limited
Join to apply for the Senior QA Engineer role at Digitalent Recruitment Limited We’re hiring a Senior QA Engineer to take a leading role in shaping testing strategy, automation frameworks, and quality standards for a high-performing tech team. This is a hands-on role where you’ll drive test automation, ensure robust coverage, and mentor engineers , all … solutions. Why This Role? Lead test automation strategy and drive quality improvements across products. Work with cutting-edge AWS, CI/CD, and modern test frameworks. Own shift-left testing, early defect prevention, and AI-powered automation initiatives. Collaborate with engineering, product, and DevOps teams to build scalable, high-performance platforms. Champion QA best practices and mentor engineers to … enhance testing culture. What You’ll Be Doing Design and implement scalable test automation frameworks using modern tools. Drive test strategy for cloud-based, multi-tenant SaaS and video streaming platforms. Establish and track quality metrics to ensure continuous improvement. Lead shift-left testing practices, identifying defects early in development. Utilize AI-driven testing tools to improve More ❯
Posted:

QA Tester - Banking

London, England, United Kingdom
May Business Consulting (Spain)
Jenkins and GitHub Actions Log and manage defects in JIRA + Xray, with evidence and detailed steps Collaborate with QA leads and developers to troubleshoot and validate fixes Conduct API testing using Postman or RestAssured Requirements 3+ years of experience in test automation with Selenium/Java Strong Java programming skills (OOP, exceptions, streams, lambdas) Experience with Git …/GitHub and CI/CD tools (Jenkins, GitHub Actions) Familiarity with API testing (Postman/RestAssured) and test data preparation Fluent English and strong analytical/problem-solving skills Nice to Have Proactivity Desire to grow and improve Team spirit and empathy Attention to detail and quick learning Strong customer orientation Location Remote, with options for London More ❯
Posted:

Software Tester / UK

Crawley, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
considering both Contract and Permanent resources, with rates/salaries depending on experience, from 3 to 30 years. The requirements are as follows: Manual Testers/QA Analysts & Automation Testing Execute test cases manually. Focus on UI/UX, functionality, user stories, and regression. Tools: Excel, TestRail, Zephyr, Jira, Quality Center. Create and execute automated test scripts. Improve test … coverage and speed up regression cycles. Tools: UFT (Unified Functional Testing) – enterprise tool for functional/regression testing (VBScript). Selenium Cypress Appium Playwright , TestComplete , Ranorex , Robot Framework . SDET Testing (Software Development Engineer in Test) Ideally a Developer-tester hybrid. Write testing frameworks and contribute to production code. Build integration and end-to-end automation … pipelines. Performance/Load Testing Simulate real-world load and stress on systems. Ensure system performance, scalability, and reliability. Tools: JMeter , LoadRunner , Gatling , Neoload . Functional Testing Verify software functions as per business requirements. Integration Testing Ensure different modules interact correctly. Test APIs, databases, and service flows. Security Testing & Penetration Testing (Ethical Hacking) Simulate attacks More ❯
Posted:

Senior Test Engineer

Stockport, England, United Kingdom
Kion Group
Engineering) Location Stockport Purpose of Role The Senior Test Engineer is responsible for test design, implementation, execution, and reporting across the software lifecycle, focusing strongly on System and Acceptance Testing levels. This role contributes directly to software quality by verifying functional and non-functional requirements, automating test scenarios, and supporting the continuous improvement of test processes. The Senior Test … Engineer plays a pivotal role in requirement analysis, traceability, exploratory testing, and technical mentorship, collaborating with other stakeholders to contribute to the shared responsibility for the quality of deliverables. Reporting to Head of Software Testing Experience Levels Minimum of 5 years of hands-on software testing experience. Experience mentoring others or leading test activities is desirable. Certification … in software testing (ISTQB or equivalent) is preferred. Principal Accountabilities Test Design & Specification: Collaborate with stakeholders to review and interpret requirements for testability and clarity. Develop detailed and traceable test specifications and test cases that align with functional, business and performance criteria. Apply diverse test design techniques, including boundary value analysis, state transition, decision tables, and error guessing, to More ❯
Posted:

QA Engineer Central London ·

London, England, United Kingdom
Aqovia UK Limited
QA Engineer to join our agile software development team. You will work on fast-paced development projects for our own products as well as client projects. Accomplished in functional testing, you will be motivated to develop your skills in automation, ‘DevOps’ and contributing to the whole software development lifecycle. Key Responsibilities: Write and maintain automated end-to-end tests … to write tests in JavaScript or C# Collaborate with users, and other team members to write acceptance criteria and test plans for user stories. Carry out functional and exploratory testing of user interfaces and APIs. File clear, reproducible bug reports. Establish and maintain test cases, test environments and test data. Manage software merges and releases. Proficiency in testing … degree or equivalent higher professional qualification. A flair for breaking things and diagnosing problems. Experience of scripting web automation using tools such as Playwright or Selenium WebDriver Experience of API testing tools such as Insomnia Experience of web diagnostic and debug tools such as Chrome/Firefox Experience with load test such as JMeter Experience of basic Windows More ❯
Posted:

Solution Quality Assurance Engineer - UK

Basingstoke, Hampshire, United Kingdom
Toppan Security Limited
our dynamic team. The ideal candidate will have experience with Selenium, Cucumber BDD, Java, and integrating with ADO pipelines and GIT repositories. Responsibilities include ensuring software quality through rigorous testing and effective test management practices. Work Requirements Location: Basingstoke, with at least 3 days in the office per week UK Right to Work: Must be eligible Travel … travel opportunities Compliance: Adhere to all relevant policies and laws Key Duties and Responsibilities Implement and maintain Cucumber BDD frameworks Utilize Selenium for automation testing Perform API testing with Postman Use Java for scripting (basic skills required) Integrate automation with ADO pipelines and manage code in GIT Conduct performance testing using JMeter Identify, debug, and troubleshoot … issues Learn and adapt to complex project requirements Lead testing efforts, create test plans/scripts, and manage test life cycle Apply Agile/Scrum methodologies Collaborate effectively within a global team Mentor and train new testers Develop and maintain QA documentation Education & Experience Higher education in software engineering or related field preferred 2-4 years' experience in QA More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

IT Test Engineer

Stoke-on-trent, Staffordshire, United Kingdom
Securecloudplus
Test Engineer to join our team and ensure the quality and reliability of our software applications and IT systems. The ideal candidate will have experience in manual and automated testing, test case design, defect tracking, and performance testing. You will work closely with product and operations teams to deliver high-quality solutions. Key Responsibilities: Develop, execute, and maintain test … plans, test cases, and test scripts for software applications and IT systems. Perform manual and automated testing to identify defects and ensure optimal performance. Collaborate with the Design and Engineering teams to understand requirements and ensure comprehensive test coverage. Utilise automation tools like Ansible with Terraform using PowerShell and Python scripting to improve efficiency and test coverage. Conduct functional … using bug tracking tools like JIRA and ALM. Analyse test results and generate detailed reports to facilitate decision-making and process improvement. Stay up-to-date with the latest testing methodologies, tools, and best practices. Required Qualifications: 2+ years of experience in software testing, QA, or IT system validation. Strong knowledge of software development life cycle (SDLC) and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Mobile Test Automation Engineer

London, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
Social network you want to login/join with: Are you passionate about building high-quality software through robust testing? We’re looking for a Mobile Test Automation Engineer to join Selected Interventions, now part of the AMCS Group, a global leader in environmental software. You’ll play a key role in automating and executing tests for our mobile … tests using C#, and supporting quality assurance across mobile platforms. Day-to-Day Responsibilities Include Write and maintain automated test scripts in Appium (C#) Conduct functional, regression, and integration testing Collaborate with developers to identify and fix defects Maintain test frameworks and participate in agile ceremonies Document results and support continuous improvement Experience and Skills Needed Appium scripting in … C# Manual and automated testing experience Basic SQL and REST API testing knowledge Strong analytical and problem-solving skills Nice to Have Non-functional testing experience Familiarity with xUnit or other test frameworks Why Join Us Be part of a growing, mission-driven company making a real impact in the environmental sector Work in a collaborative More ❯
Posted:

Mobile Test Automation Engineer

Richmond, England, United Kingdom
Hybrid / WFH Options
AMCS Group
Are you passionate about building high-quality software through robust testing? We’re looking for a Mobile Test Automation Engineer to join Selected Interventions, now part of the AMCS Group, a global leader in environmental software. You’ll play a key role in automating and executing tests for our mobile apps, helping ensure smooth, stable experiences for end users. … tests using C#, and supporting quality assurance across mobile platforms. Day-to-Day Responsibilities Include Write and maintain automated test scripts in Appium (C#) Conduct functional, regression, and integration testing Collaborate with developers to identify and fix defects Maintain test frameworks and participate in agile ceremonies Document results and support continuous improvement Experience and Skills Needed Appium scripting in … C# Manual and automated testing experience Basic SQL and REST API testing knowledge Strong analytical and problem-solving skills Nice to Have Non-functional testing experience Familiarity with xUnit or other test frameworks Agile development experience Why Join Us Be part of a growing, mission-driven company making a real impact in the environmental sector Work More ❯
Posted:

Mobile Test Automation Engineer

Richmond, North Yorkshire, UK
Hybrid / WFH Options
AMCS Group
Are you passionate about building high-quality software through robust testing? We’re looking for a Mobile Test Automation Engineer to join Selected Interventions, now part of the AMCS Group, a global leader in environmental software. You’ll play a key role in automating and executing tests for our mobile apps, helping ensure smooth, stable experiences for end users. … tests using C#, and supporting quality assurance across mobile platforms. Day-to-Day Responsibilities Include Write and maintain automated test scripts in Appium (C#) Conduct functional, regression, and integration testing Collaborate with developers to identify and fix defects Maintain test frameworks and participate in agile ceremonies Document results and support continuous improvement Experience and Skills Needed Appium scripting in … C# Manual and automated testing experience Basic SQL and REST API testing knowledge Strong analytical and problem-solving skills Nice to Have Non-functional testing experience Familiarity with xUnit or other test frameworks Agile development experience Why Join Us Be part of a growing, mission-driven company making a real impact in the environmental sector Work More ❯
Posted:

Mobile Test Automation Engineer

Richmond upon Thames, Greater London, UK
Hybrid / WFH Options
AMCS Group
Are you passionate about building high-quality software through robust testing? We’re looking for a Mobile Test Automation Engineer to join Selected Interventions, now part of the AMCS Group, a global leader in environmental software. You’ll play a key role in automating and executing tests for our mobile apps, helping ensure smooth, stable experiences for end users. … tests using C#, and supporting quality assurance across mobile platforms. Day-to-Day Responsibilities Include Write and maintain automated test scripts in Appium (C#) Conduct functional, regression, and integration testing Collaborate with developers to identify and fix defects Maintain test frameworks and participate in agile ceremonies Document results and support continuous improvement Experience and Skills Needed Appium scripting in … C# Manual and automated testing experience Basic SQL and REST API testing knowledge Strong analytical and problem-solving skills Nice to Have Non-functional testing experience Familiarity with xUnit or other test frameworks Agile development experience Why Join Us Be part of a growing, mission-driven company making a real impact in the environmental sector Work More ❯
Posted:

Test Automation Engineer Sunderland, UK

Sunderland, United Kingdom
Hybrid / WFH Options
Tombola
do, too. Whatever your role, it's the kind of place that can put a spring in your step. Whether you're developing game mechanics, keeping our players safe, testing our products or sponsoring one of the UK's biggest TV shows, how high and how far you bounce really is up to you. What do we offer? We … long-term technology strategies. What does "good" look like for us? Experience with automation tooling like Playwright, Selenium and Cypress, browserstack and TestProject is preferred. Experience designing and implementing API testing (Postman/Bruno or similar). Understanding of the SDLC. Understand and integrate test integration within CI/CD. Self-motivated. Passionate about testing, automation and … it's not essential ️ Working in regulated environments. Experience of Agile working methodologies, including the use of JIRA. Experience of using management tools such as TestRail. Previously implemented automated testing frameworks and processes. Experience with Object Oriented Programming in C#/.NET. Experience of SQL. Some of the technologies we currently use are: Playwright TypeScript Docker Bash TeamCity Terraform More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Test Engineer

Lutterworth, England, United Kingdom
Cox Automotive Europe
a key role in ensuring the performance and reliability of our software products. What You’ll Do Create & implement robust test strategies for web-based platforms Automate functional & regression testing using C#, Cypress, K6, Postman , and more Collaborate with cross-functional teams across the full Agile lifecycle Contribute to the continuous improvement of testing practices Guide and mentor … engineers as a quality champion C#, Cypress, RestSharp, K6, Postman Docker, AWS, Git, SQL Agile Scrum environments with continuous delivery What You Bring Proven experience in test automation and API testing Strong knowledge of web technologies and programming A passion for quality, performance, and teamwork Experience mentoring and leading by example Ready to shape the future of automotive More ❯
Posted:

Lead Software QA Engineer

London, England, United Kingdom
Endeavour Recruitment Solutions
directly with the Development Manager and will have responsibility for the team of QA Engineers working in an Agile environment. The role: Lead the test functions in implementing automated testing Identify and feedback on any developmental bugs Ensure requirements of project brief have been addressed and correctly implemented Work with our “best practice” development processes (documentation, Test Plans, logging … and Agile methodologies) Participate in the testing of a next generation platform to replace our legacy system and introduction of new functionality and products Troubleshoot technical issues/bugs and identify modifications where required Testing of a robust set of services and APIs to power web applications Participate in discussions and planning around user acceptance Proven experience of … methodical thinking and application of test cases and scenarios. Experience and knowledge of writing and working with automated test tools (C# Postman, Jenkins, BDD - SpecFlow, Selenium etc.) Experience in testing React/Redux and .NET Experience of testing Microsoft Azure cloud applications An understanding of data migration, transformation and scripting A proven track record of functional testing More ❯
Posted:

Performance Tester

Manchester, England, United Kingdom
Hybrid / WFH Options
Revolent Group
institution , where you’ll receive hands-on training and work on high-impact projects in a collaborative, fast-paced environment. 🔍 What We’re Looking For: Essential: Proficiency with Performance Testing Tools (JMeter, LoadRunner, or similar) for simulating high loads on rest applications Experience with managing Load and Stress testing on rest/web and standalone Java applications Experience … with REST/SOAP API and standalone Java API testing, Experience of Cucumber, Selenium automation tools Strong Java skills for creating custom test frameworks and scripts Experience integrating performance tests into CI/CD pipelines (Teamcity, GitLab CI, etc.) Ability to use APPD, JConsole tools to identify bottlenecks Knowledge of SQL Test Data Management – Creating and managing … bulk test data for performance scenarios Nice to have: Understanding database performance and query optimization Basic understanding of security testing principles Knowledge of Python, Groovy, or similar for test automation for managing Load test scripts Skills in creating dashboards and reports to communicate performance test results Domain knowledge: Banking, Financial Services, Lending (Very nice to have – understanding the wholesale More ❯
Posted:

Software Test Engineer

Knutsford, England, United Kingdom
Revolent Group
You will be paid for training Get experience working with a leading professional services firm as a Software Tester To become a Revolent Software Tester will have: Essential: Performance Testing Tools: Proficiency with JMeter, LoadRunner, or similar tools for simulating high loads on rest applications Load/Stress Testing: Experience with managing Load and Stress testing on … of Python, Groovy, or similar for test automation for managing Load test scripts as per demand Test Data Management: Creating and managing bulk test data for performance scenarios Preferred API Testing: Experience with REST/SOAP API and standalone Java API testing, Experience of Cucumber, Selenium automation tools Java Programming: Strong Java skills for creating … Skills in creating dashboards and reports to communicate performance test results CI/CD Integration: Experience integrating performance tests into CI/CD pipelines (Teamcity, GitLab CI, etc.) > Security Testing: Basic understanding of security testing principles Reporting & Visualization: Skills in creating dashboards and reports to communicate performance test results We will build upon your existing skills and provide More ❯
Posted:
API Testing
10th Percentile
£38,000
25th Percentile
£41,250
Median
£49,000
75th Percentile
£61,926
90th Percentile
£67,750