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Senior Software Development Engineer in Test (SDET)

Flex

$158,000 - $172,000
Aug 22, 2025
New York, NY, US • San Francisco, CA, US
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Flex, a FinTech company, is looking to solve the problem of inflexible and difficult rent payment experiences by creating the best rent payment experience, enabling users to pay rent throughout the month on a schedule that better fits their finances and budget.

Requirements

  • 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

Responsibilities

  • 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
  • Investigate and resolve complex defects and production issues through advanced debugging and root cause analysis

Other

  • Bachelor’s degree in Computer Science or related field, or equivalent experience
  • 4+ years of experience in software development and test automation
  • Excellent cross-functional communication and mentorship skills
  • Strong written and verbal communication skills; able to collaborate across functions
  • Hybrid position with on-site expectations of 3 days per week in our New York City Headquarters (Union Square) or Bay Area (San Mateo)