Top QA Engineer Jobs in London

Design and build test infrastructure, automation, and tooling to validate ML software stacks and hardware; shape test architecture across CI pipelines, frameworks, simulators, emulators, and large ML workloads; mentor engineers and own complex validation projects.

As a Staff Software Engineer (ML QA), you'll design and maintain testing infrastructure for the ML software stack, focusing on automation, software quality, and mentoring junior engineers in a collaborative environment.

Design, build, and maintain automated UI, API, and end-to-end test frameworks integrated with CI/CD. Define risk-based testing strategies, transition manual regression to intelligent automation, validate AI-generated code and LLM outputs, collaborate to improve testability and production quality, and champion AI-native testing practices across engineering teams.

Develop and maintain automated quality solutions for Smart TVs, streaming devices, and entertainment products. Build test automation infrastructure, execute BDD-based testing on RDK stacks, integrate tests with CI/CD pipelines, manage test data, investigate defects, optimize test coverage, and improve release quality. Collaborate within agile teams and lead quality strategy, reliability engineering, and process improvements for product certification and pre-release readiness.

Own QA across the product: plan and execute testing, build automated frontend (Angular/TypeScript) and API test suites, review stories, test AI outputs and financial flows, triage bugs, and sign off releases while embedding testing into development.

The Quality Assurance Engineer will develop tests for sports technology products, improve product quality, collaborate in Agile teams, and maintain automated test suites.

Staff QA Automation Engineer responsible for defining quality engineering standards across a microservices organization. The role architects shared automation frameworks, CI testing strategies, unit, integration, contract, and service-level testing, and quality controls for canary releases. It also advances AI-driven regression optimization, change-risk analysis, mutation testing, test generation, and self-healing checks. This specialist individual contributor partners with distributed engineering teams to drive adoption, improve pipeline reliability, and establish scalable quality practices.

Design and implement Python testing frameworks, conduct ETL testing, and collaborate in a CI/CD environment focusing on cloud-based data platforms.

Designs and maintains automated UI, API, database, regression, integration, end-to-end, performance, and load test suites for a SaaS platform. Integrates quality gates into CI/CD pipelines, partners with developers and product teams in agile workflows, uses AI/LLM tools to improve testing efficiency, maintains technical documentation, and drives defect reduction and continuous quality improvement.

Lead mobile QA for iOS, Android, and responsive web: design and execute manual and automated tests, run exploratory/regression/smoke testing, validate performance and cross-device compatibility, perform API/integration testing, document defects, improve QA processes, mentor junior QAs, and communicate release readiness.

Lead performance and scalability for a microservices-based platform: define SLOs and thresholds, design and run production-scale performance tests (k6), integrate performance into CI/CD, build reusable test assets, diagnose regressions via logs and traces, and drive fixes with stakeholders to embed performance across delivery.

Validate and automate testing for AWS serverless, event-driven and modernized applications. Design and run functional, integration, contract, performance, resilience and security tests. Build automated test frameworks, integrate with CI/CD, leverage AWS Kiro for AI-assisted test generation and validation, and support migration/regression testing across microservices.

Build and maintain end-to-end automated test frameworks for web and API platforms, integrate tests into CI/CD, own test coverage, write bug reports, and improve test reliability and speed.

Own manual and automated QA for web (Vue.js/Rails) and native mobile (iOS/Android) plus React Native. Drive shift-left testing, maintain TestRail, perform smoke/regression releases, improve automation coverage, and act as a release gate to ensure high reliability in safety-critical rail B2B SaaS environments.

Hands-on QA Engineer responsible for test strategy, manual and automated testing (Selenium, BDD), writing and executing test plans, reviewing stories and code, participating in agile ceremonies, maintaining test documentation and improving QA processes across the software delivery lifecycle.

Design and execute manual and automated tests for Google Cloud Identity. Perform API and security testing, identify and report bugs and vulnerabilities, validate fixes through regression testing, participate in code reviews, automate test processes, and document test cases and findings.

Lead QA strategy and execution for web, mobile and API products: define test strategy, design and run manual and automated tests, scale automation frameworks, embed tests in CI/CD, coach QA engineers, drive QA process improvements, and report release readiness and quality risks to stakeholders.

Lead mobile QA for a Flutter app: build and run parallelized E2E tests, validate GraphQL contracts, integrate AI tools to auto-generate tests, monitor observability (Sentry, Firebase, GCP), triage issues, run exploratory and release testing across emulators, devices, TestFlight/Play Console and Shorebird OTA, and maintain CI/CD quality gates in Codemagic/GitLab CI.

Lead end-to-end web QA and test automation for high-traffic web platforms. Build and run parallelized Playwright TypeScript E2E suites, validate APIs and contracts, integrate AI coding assistants into QA workflows, audit Figma specs, monitor observability logs, verify asynchronous workflows, and maintain CI/CD quality gates to ensure zero-regression releases.

Validate and test blockchain and Web3 products across the development lifecycle: create and run test plans, validate smart contract and wallet interactions, test APIs and web platforms, track and verify bugs, collaborate on releases, and improve automation, reliability, performance, and security.

Triage and resolve Master Data Management (Party, Risk, Reference) issues in Stibo STEP, run targeted data-cleansing sprints, monitor data quality dashboards, support releases/UAT, and maintain documentation and playbooks to prevent recurring data issues.

Design, build, and maintain manual and automated end-to-end tests for front-end and back-end APIs. Use Cucumber BDD, Postman, Jenkins, and SQL to validate functionality, data integrity, and performance across cloud-native and big-data environments (GCP/BigQuery). Integrate tests into CI/CD pipelines, track defects in Jira, and collaborate with cross-functional Agile teams to ensure continuous quality.

The Quality Assurance Engineer ensures product reliability by designing and executing test plans, maintaining automated test suites, and collaborating with teams to improve QA processes.

Design and maintain the automation testing strategy at Incard, covering backend, frontend, and mobile applications, integrating with CI/CD pipelines, and focusing on quality assurance in a fintech environment.

As a QA Engineer, you will design and automate tests to ensure the reliability and performance of Fogsphere's AI platform, collaborating with engineering teams throughout the development lifecycle.