Software Development Engineer in Test

Position Summary

The Intermediate to Senior Software Development Engineer in Test is responsible for driving quality through a combination of strong engineering practices and hands-on testing. You will architect and implement automation frameworks while complementing them with thoughtful manual testing to validate complex workflows and edge cases.

You approach testing as a software problembuilding reliable maintainable systems that continuously validate product behavior. Working cross-functionally with engineering and product teams you ensure quality is built into every stage of development from design and implementation to release and post-production monitoring.

In this role you will:

Test Framework & Infrastructure

• Design build and maintain scalable test automation frameworks from the ground up for iOS and Android (Appium Expresso and XCUITEST) and Web (Playwright / Selenium).
• Develop and maintain reusable test libraries data builders and mocking utilities that other engineers can consume.
• Instrument test pipelines for observability flakiness dashboards coverage reports and failure triage tooling.

CI/CD Integration & Shift-Left Quality

• Integrate automated test suites as quality gates within CI/CD pipelines (GitHub Actions CircleCI or equivalent); ensure build failures surface in <30 minutes.
• Champion shift-left testing: participate in design and architecture reviews to identify testability risks early; influence API contracts feature flags and observability hooks.
• Collaborate with DevOps/Platform to define and enforce test environment parity between staging and production.

Test Strategy & Execution

• Define and own the end-to-end test strategy for assigned product areas including functional integration E2E regression performance and contract testing.
• Write review and maintain high-quality test plans and test cases derived from product and technical requirements across iOS Android and Web.
• Lead peer reviews of test code and test cases to ensure depth breadth and maintainability of coverage.
• Perform exploratory risk-based testing to surface edge cases beyond scripted scenarios.

Quality Advocacy & Defect Management

• Serve as the quality owner for one or more delivery squads; track development progress and proactively surface risks and issues related to quality deliverables.
• Triage document and prioritize defects in Jira with clear reproduction steps severity classification and root-cause analysis.
• Analyze automated test execution results to distinguish genuine failures from test infrastructure noise; drive remediation of both.
• Mentor on automation best practices clean test code and testing strategy.

About You:

Education

• Bachelors degree in Computer Science Software Engineering or a related technical field (or equivalent practical experience).

Experience

• 4 years of experience in software development and/or quality engineering with a strong emphasis on test automation engineering.
• Demonstrated ability to design and implement test automation frameworks from scratch not just maintain existing ones.
• Hands-on programming proficiency in TypeScript/JavaScript and preferably one or more of: Swift (mobile) Python Java or Kotlin for test code.
• Deep expertise in mobile testing on real iOS and Android devices; experience with Appium XCUITest or Espresso.
• Experience integrating test suites into CI/CD pipelines (GitHub Actions CircleCI Jenkins or similar Docker).
• Strong command of API testing (REST/GraphQL) including contract testing with tools such as Pact or Postman/Newman.
• Experience with performance and load testing (e.g. Gatling k6 Locust) is a strong plus.
• Solid understanding of software development fundamentals: version control (Git) code review clean code principles and agile delivery practices.
• Experience with agentic workflows and AI-driven test orchestration

• Use AI tools as part of your daily workflow to enhance productivity problem-solving and decision-making (e.g. drafting analysis coding research or process automation)
• Apply judgment and accountability when using AI by reviewing outputs for accuracy bias and quality before use
• Continuously learn and adapt as new AI tools and capabilities emerge incorporating them into your ways of working
• Identify opportunities to improve how work gets done from personal productivity to team-level workflows by leveraging AI effectively
• Operate with strong data responsibility and security awareness especially when working with sensitive or regulated information

• Individual Contributors: Use AI to improve personal productivity and quality of output
• Senior ICs / Managers: Integrate AI into team workflows and improve processes
• Leaders: Drive AI adoption at the organizational level and shape how work is done across teams

• Demonstrated experience using AI tools in a practical responsible way
• Curiosity and openness to experimenting with new technologies
• Ability to balance efficiency with quality and sound judgment

• You should receive a confirmation email after submitting your application.
• A recruiter (not a computer) reviews all applications at League.
• If we see alignment with Leagues needs a recruiter will reach out to learn more about your goals. The recruiter will also share the team-specific interview process depending on the roles you are exploring.
• The final step is an offer which we hope you will accept!
• Prior to joining us we conduct reference and background checks. Additional checks could be required for US Candidates depending on the role you are exploring.