Flex

Senior Software Development Engineer in Test, SDET

Flex

full-time

Posted on:

Location Type: Remote

Location: New YorkUnited States

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Salary

💰 $142,000 - $172,000 per year

Job Level

About the role

  • Architect, implement, and optimize automated test frameworks for complex product areas, ensuring high reliability and maintainability
  • Design, develop, and maintain robust automated test suites for API, UI, and integration testing
  • Lead test strategy development and perform risk analysis for major features and systems
  • Integrate automated testing into CI/CD pipelines, supporting continuous integration and delivery processes
  • Proactively identify systemic quality issues and drive cross-team process improvements to increase coverage and efficiency
  • Analyze test coverage, identify gaps, and implement solutions to improve product quality
  • Collaborate closely with engineering, product, and quality leaders on cross-functional quality initiatives and release planning
  • Provide technical guidance and mentorship to junior SDETs and QA team members, fostering skill development and best practices
  • Review code and test cases contributed by other engineers for quality and maintainability
  • Maintain accurate and actionable test documentation, reports, and quality metrics for assigned product areas
  • Investigate and resolve complex defects and production issues through advanced debugging and root cause analysis
  • Advocate for quality and champion adoption of best practices within and across engineering teams
  • Proven ability to lead test strategy and risk analysis while making high-impact technical decisions amid ambiguity and prioritizing what matters most.

Requirements

  • Bachelor’s degree in Computer Science or related field, or equivalent experience
  • 4+ years of experience in software development and test automation
  • Advanced proficiency in multiple programming languages and test automation frameworks
  • Deep experience designing, building, and maintaining automation frameworks (e.g., Playwright, Cypress, Selenium, RestAssured)
  • Strong expertise in API, UI, and integration testing
  • Proficient in CI/CD pipeline integration and optimization
  • Skilled in test strategy development, risk analysis, and test architecture
  • Advanced debugging, troubleshooting, and root cause analysis
  • Solid understanding of database systems and advanced SQL
  • Experience with observability and monitoring tools (e.g., DataDog, NewRelic)
  • Excellent cross-functional communication and mentorship skills
  • Strong written and verbal communication skills; able to collaborate across functions.
Benefits
  • Competitive medical, dental, and vision available from Day 1
  • Company equity
  • 401(k) plan with company match (our company match kicks off at the beginning of 2026)
  • Unlimited paid time off + 13 company paid holidays
  • Parental leave
  • Flex Cares Program
  • Free Flex subscription
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
test automationautomated test frameworksAPI testingUI testingintegration testingtest strategy developmentrisk analysisdebuggingSQLtest architecture
Soft Skills
cross-functional communicationmentorshipcollaborationleadershipproblem-solvingtechnical guidanceprocess improvementquality advocacydecision makingskill development