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First Resonance Logo

Software Development Engineer in Test (SDET)

First Resonance

$140,000 - $170,000
Dec 17, 2025
Los Angeles, CA, US
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First Resonance is looking to ensure the quality, reliability, and performance of its core platform by hiring a Software Development Engineer in Test (SDET) to architect and implement scalable, robust, and maintainable automated testing solutions.

Requirements

  • Strong proficiency in at least one modern programming language (e.g., Python, JavaScript/TypeScript, or Java).
  • Deep, hands-on experience designing and implementing test automation frameworks (e.g., Cypress, Playwright, Selenium, or Pytest).
  • Expertise in testing RESTful and/or GraphQL APIs, including familiarity with tools like Postman or specialized frameworks.
  • Practical experience integrating automated tests into continuous integration systems (e.g., GitHub Actions, Jenkins, GitLab CI).
  • Solid understanding of software development principles, software quality assurance methodologies, and Agile processes.
  • Prior experience in a fast-paced startup or working with complex enterprise SaaS platforms.
  • Experience with containerization technologies (e.g., Docker, Kubernetes).

Responsibilities

  • Design, develop, and maintain automated testing frameworks for API, UI, integration, and end-to-end testing using industry-standard tools and programming languages.
  • Collaborate with Product Managers and Software Engineers to define testing strategies, quality metrics, and test coverage goals for new features and system enhancements.
  • Implement automated tests as an integral part of our CI/CD pipelines to achieve continuous quality enforcement and rapid feedback loops.
  • Develop and execute performance, load, and stress tests to ensure the platform scales reliably under high usage.
  • Investigate, document, and track software defects and verify fixes, providing technical guidance on root cause analysis.
  • Research, evaluate, and implement new testing tools and technologies to improve the efficiency and effectiveness of the QA process.

Other

  • 3+ years of professional experience as an SDET, Test Automation Engineer, or a similar role focused on writing automation code.
  • Health Insurance; medical, vision, dental, & life insurance.
  • Paid Parental Leave.
  • Employee Stock Option Plan.
  • Pay is based on factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience and skillset, and location.