Top QA Engineer Jobs in Madrid

Manage engineering projects and QA for a small, remote engineering team: track work, run bug pipeline, write and automate tests (Capybara when useful), coordinate engineers with product and internal stakeholders, and report status to leadership while using AI to streamline repetitive testing tasks.

The role focuses on leading product safety and quality initiatives within supply chains, collaborating cross-functionally while providing expertise and thought leadership in compliance and sustainability.

As a QA Engineer, you will ensure product quality through testing, design test cases, validate functionality, and document issues while collaborating with the development team.

Manual and automated QA for Pod releases: run local/staging environments, submit transactions, verify APIs/receipts/state, reproduce and report bugs, write end-to-end and headless browser tests, and build release checklists and automation.

As an Automation QA Engineer, you'll test payment integrations, define test scope, develop automation plans, and build reliable automated tests to ensure product quality and continuous improvement.

Quality-check ocean freight contracts, rates and surcharges against source documents; correct errors before customer-facing; communicate with vendor partners; find recurring error patterns and improve QA processes; use AI tools to speed QA and maintain high-quality master data.

Responsible for leading quality assurance tasks across multiple projects, ensuring high-quality software and mentoring less experienced colleagues.

Perform end-to-end manual testing of platform features, APIs, and integrations. Define test scope and maintain test documentation. Execute backend and API tests, query databases with SQL, investigate issues using logs and network traces, manage defect lifecycle, support releases, collaborate with Development/DevOps/Product, and mentor junior QA engineers while improving QA processes and strategies.

The Senior Software Quality Engineer role focuses on enhancing testing frameworks, automating functions, testing features, and improving existing infrastructure for ClickHouse's cloud offerings.

Plan and execute manual functional, regression, exploratory, compatibility, performance, integration, and system-level testing for a Jira/Confluence-integrated web product. Triage issues, communicate with cross-functional teams, and support release and iteration planning to maintain high-quality software delivery.

Design and execute comprehensive test plans for dApps and smart contracts, perform unit/integration/end-to-end testing, run security audits and vulnerability assessments, automate tests within CI/CD pipelines, monitor quality metrics, debug issues, and collaborate with developers and product managers to ensure reliable DeFi/EVM-compatible applications.

The Senior Automation QA Engineer will create and execute test plans, perform regression testing, report defects, collaborate with teams, and maintain testing environments.

Develop and maintain automation testing frameworks, execute tests, and implement AI-driven quality practices while collaborating with product teams.

The Senior QA Tester designs testing processes for web/mobile applications, identifies software issues, and collaborates with teams to uphold quality standards.

As a Quality Assurance Engineer, you will test software, validate new features, perform regression testing, and manage user-reported bugs.

Ownership of QA for Web3 products: design and implement API and backend test strategies, build automation suites, manage and resolve bugs, maintain testing documentation, and collaborate cross-functionally to shift testing left and ensure product quality.

Build and maintain automated test suites for smart contracts and UIs, integrate testing into development, identify and track bugs, improve test frameworks, and ensure comprehensive coverage for new features.

Lead the QA process for mobile app testing, implement CI systems, manage bugs, and develop automated tests for iOS and Android applications.

Perform manual and automated testing across web, mobile, APIs, backend services, and blockchain integrations. Build and maintain Python-based test frameworks, investigate issues across distributed systems, analyze logs/metrics/network traffic, contribute to release validation and automation, and collaborate with product, engineering, and DevOps. Use AI tools to accelerate testing, support incident analysis, and proactively improve testing coverage and product reliability.

Lead QA efforts for a B2B marketplace: manual, exploratory, and automated testing. Expand Cypress e2e suite, build API tests (Postman/Playwright), run basic performance tests, use Sentry/Hotjar and AWS tracing for investigations, and integrate AI-assisted QA workflows. Collaborate across engineering, product, and operations to improve release reliability.

Perform 50/50 manual and automated testing using Python, expand and stabilize an existing automation framework, design test strategies, integrate tests into CI/CD, execute performance/load and API testing, collaborate with cross-functional teams, and improve QA processes.

The App Integration Specialist will engage in creating test environments, maintaining third-party repositories, performing product testing, and supporting automation scripts while collaborating with the development team.

Review and proofread Kazakh localized content for grammar, spelling, formatting, and cultural accuracy. Execute test cases, identify and report localization bugs using bug-tracking systems, verify fixes, and occasionally translate English to Kazakh. Follow project style guides, troubleshoot basic issues, and ensure quality and consistency across digital products.

Lead GCP quality for Prilenia's clinical programs from startup through inspection readiness. Oversee CRO and vendor QA, eTMF quality, CAPA resolution, audits, and regulatory inspection responses. Provide GVP and GLP QA oversight, author SOPs, define quality metrics, build a fit-for-purpose QMS, mentor QA staff, and represent QA in cross-functional governance.

Design, build, and maintain end-to-end test automation frameworks (UI, API, smart contracts, wallet flows), write Web3-specific tests, integrate suites into CI/CD, improve coverage, and promote quality across engineering using AI-assisted tooling.