Sr. Test Engineer

Company: Mastek Limited
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Job Description:

Job Title

Sr. Test Engineer – Quality Engineering (API Automation, Playwright)

Expected Work Experience

Candidate must have relevant experience of 5 to 9 Years.

Job Location

United Kingdom

Job Summary

Sr. Test Engineer responsible for designing, developing, and executing automated tests for digital applications and cloud-based solutions using Playwright API framework and other automation tools, ensuring high-quality, reliable, and scalable software delivery. Candidate must have relevant experience of 5 to 9 Years.

Key Responsibilities

  • Design, develop, and maintain automated API test scripts using Playwright API framework for digital and cloud-based applications.
  • Collaborate with developers, architects, and product owners to understand functional and non-functional requirements and translate them into robust automation test scenarios.
  • Implement and enhance test automation frameworks, focusing on reusability, scalability, and maintainability.
  • Perform API automation testing to validate integrations, data flows, and service reliability across digital application and cloud engineering ecosystems.
  • Develop comprehensive test design for automation, including test data strategy, coverage analysis, and risk-based testing approaches.
  • Integrate automated tests into CI/CD pipelines to enable continuous testing and rapid feedback.
  • Analyze test results, identify defects, and work closely with engineering teams to ensure timely resolution.
  • Ensure adherence to quality engineering best practices, coding standards, and documentation for automation assets.
  • Contribute to test strategy, test planning, and estimation activities for projects and releases.
  • Mentor junior team members in automation testing, Playwright usage, and quality engineering practices.

Other Capabilities

  • Strong understanding of digital application and cloud engineering concepts, including microservices and API-first architectures.
  • Ability to design modular, reusable, and maintainable automation components.
  • Experience working in Agile/Scrum environments with close collaboration across cross-functional teams.
  • Strong analytical and problem-solving skills with a focus on quality and continuous improvement.
  • Effective communication skills to articulate test strategies, risks, and results to technical and non-technical stakeholders.

Qualifications and Skills

  • Proven experience in Quality Engineering with a focus on API automation testing using Playwright API framework.
  • Hands-on experience in automation testing and test design for automation, including creation of robust test cases and suites.
  • Proficiency in at least one programming or scripting language commonly used for automation (e.g., JavaScript/TypeScript, Python, or similar).
  • Experience with CI/CD tools and integrating automated tests into build and deployment pipelines.
  • Familiarity with RESTful APIs, JSON, and related testing tools and techniques.
  • Understanding of defect management, test management tools, and reporting mechanisms.
  • Exposure to cloud platforms and digital application ecosystems is preferred.
  • Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
  • Security-conscious mindset with the ability to work in environments requiring strict compliance and governance.

Note:This role requires UK Security Clearance (SC) and eligibility.

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Posted: October 15th, 2026