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Testvagrant

Posted 5 May 2026

Senior Software Development Engineer in Test (Sr. SDET)

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Employment
Full time
Posted
5 May 2026

About the role

Position:Sr SDET (Sr Software Development Engineer in Test)

We are looking for a Sr. SDET (5 –9 years) with strong core testing fundamentals, hands-on automation expertise, and a consultative mindset to lead quality initiatives for large-scale products. The role requires ownership across web, API, and/or mobile testing, balancing manual exploratory/UAT testing with automation strategy and execution, while working closely with product and engineering stakeholders in an Agile environment.

Requirements
  • Design, develop, and maintain automated test frameworks and scripts using TypeScript/JavaScript for:
    • Web applications (Playwright / WebdriverIO)
    • APIs (modern API automation tools/frameworks)
  • Plan and execute comprehensive test strategies, including test plans, test cases, UAT cycles, and release validation.
  • Perform functional and exploratory testing across web, API, and mobile layers to identify issues early in the SDLC.
  • Drive API testing and validation, identifying functional defects, contract gaps, REST standard violations, versioning inconsistencies, and documentation issues.
  • Collaborate closely with Developers, Product Managers, and stakeholders to clarify requirements, validate expected behavior, and resolve defects.
  • Actively participate in Agile ceremonies (sprint planning, stand-ups, reviews, retrospectives) and contribute to sprint quality goals.
  • Lead and mentor SDETs, ensure execution excellence, and take ownership of deliverables.
  • Create and maintain test metrics, defect dashboards, and progress reports, and communicate status effectively to client stakeholders.
  • Continuously evaluate and implement best practices in testing, automation, and quality engineering.
  • Contribute to improving testing processes, standards, and methodologies from a consulting perspective.

Qualifications & Core Skills (Must-Have):
  • 6+ years of experience as an SDET with strong hands-on testing experience.
  • Proficiency in TypeScript / JavaScript for test automation.
  • Solid experience in web, API, and/or mobile application testing.
  • Hands-on experience with automation tools such as:
    • Web: Playwright or WebdriverIO
    • API: Any modern API automation framework or Mobile: Appium (preferably with WDIO)
  • Strong understanding of software testing principles, test design techniques, and defect lifecycle.
  • Good understanding of REST APIs, HTTP methods, status codes, payload validation, and integration testing concepts.
  • Experience in creating test plans, test strategies, release plans, and owning end-to-end test execution.
  • Strong analytical, problem-solving, and debugging skills.
  • Excellent communication and collaboration skills, especially in client-facing environments.
  • Ability to work effectively in a fast-paced Agile environment with minimal supervision.
  • Bachelor’s degree in Computer Science, Engineering, or a related field.


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