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Senior Software Development Test Engineer (SDET)

LifeStance Health

Company : LifeStance Health

Location : San Francisco, CA

Posted Date : 19 October 2025

Job Type : Full Time

Category : Industrial Engineering

Occupation : Test Engineer

Job Details

At LifeStance Health, we strive to help individuals, families, and communities with their mental health needs. Everywhere. Every day. It's a lofty goal; we know. But we make it happen with the best team in mental healthcare.
Thank you for taking the time to explore a career with us. As the fastest growing mental health practice group in the country, now is the perfect time to join our team!
LifeStance Health Values

  • Belonging: We cultivate a space where everyone can show up as their authentic self.
  • Empathy: We seek out diverse perspectives and listen to learn without judgment.
  • Courage: We are all accountable for doing the right thing - even when it's hard - because we know it's worth it.
  • One Team: We realize our full potential when we work together towards our shared purpose.
ROLE OVERVIEW
We are seeking a talented and detail-oriented Senior Software Development Test Engineer (SDET) to join our team at LifeStance. As an SDET, you will play a critical role in ensuring the quality, performance, and reliability of our software products. You will collaborate closely with software engineers, product managers, and other stakeholders to design, develop, and maintain automated testing frameworks and scripts. This position demands a forward-thinking approach and shift-left mentality to drive quality excellence across the organization.
Consistent with LifeStance's values, every member of the LifeStance team is expected to support each other and the mission, which may mean participating in projects and initiatives and performing functions and responsibilities not specifically outlined in this job description.
Compensation: $120,000 - 140,000/annually, plus annual bonus potential
LifeStance provides the compensation range and benefits that it in good faith believes it might pay and/or offer for this position. LifeStance reserves the right to ultimately pay more or less than the posted range and offer additional benefits and other compensation, depending on circumstances not related to an applicant's sex or other status protected by local, state, or federal law.
KEY RESPONSBILITIES
  • Develop and champion the long-term vision and strategy for test automation across the organization.
  • Architect and implement advanced, data-driven test automation frameworks that use AI/ML to identify and prioritize test cases.
  • Test Automation Development: Lead teams in the design, development, and maintenance of robust automated test scripts, frameworks, and tools for functional, integration, and regression testing.
  • Act as a subject matter expert and go-to person for complex technical challenges.
  • Lead and facilitate the 'shift-left' quality strategy across multiple product teams, ensuring that testing is an integral part of the development process from concept to delivery.
  • Performance and Load Testing: Develop and execute performance, scalability, and load tests to ensure the software meets performance standards.
  • Test Planning and Execution: Define and document test strategies, create detailed test plans, and execute manual and automated tests.
  • In-depth knowledge and hands-on experience with CI/CD pipelines, including their integration with automated tests for rapid deployment.
  • Drive the automation strategy for a portfolio of business-critical applications, including our web applications and the Salesforce platform
  • Define and report on key quality metrics, with a goal of reducing production defects by 20% year-over-year
  • Mentor and lead the professional development of junior and mid-level SDETs, including leading technical training sessions, performing code reviews, and fostering a culture of quality excellence.
REQUIREMENTS
  • Bachelor's degree in computer science, Engineering, or a related field.
  • Typically, it has 8+ years of professional experience in software development automation
  • Expert understanding of software QA methodologies, tools, and processes.
  • Expert programming skills in JavaScript and TypeScript, with experience in building and maintaining test automation frameworks.
  • Mastery of test automation tools (e.g. Datadog Synthetic, Playwright, Selenium, Cypress).
  • Expertise in one or more programming languages, preferably JavaScript or NodeJS.
  • In-depth knowledge of CI/CD tools (e.g. Jenkins, GitHub Action, GitLab CI).
  • Expertise in designing and executing sophisticated API contract and integration tests. Proven ability to design and analyze performance and load test results to optimize system architecture.
  • In-depth experience with cloud-native testing strategies on AWS/Azure/GCP.
  • Proficient in quality assurance practices, automated testing strategies, and DevOps methodologies.
  • Ability to diagnose complex technical issues, identify root causes, and propose effective solutions.
  • Excellent verbal and written communication skills.
  • Strong sense of ownership and ability to drive initiatives across teams and domains
  • Committed to fostering diversity, inclusion, and belonging in engineering environments
  • Qualified candidates must be legally authorized to be employed in the United States
  • Qualified candidates must be legally authorized to be employed in the United States
  • LifeStance is an EEO/Affirmative Action Employer and does not discriminate on the basis of age, race, color, religion, gender, sexual orientation, gender identity, gender expression, national origin, protected veteran status, disability, or any other legally protected status.
    • Demonstrates awareness, inclusivity, sensitivity, humility, and experience in working with individuals from diverse ethnic backgrounds, socioeconomic statuses, sexual orientations, gender identities, and other various aspects of culture.
PHYSICAL REQUIREMENTS
  • The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.
  • While performing the duties of this job, the employee is regularly required to sit, stand, bend, talk and hear. The employee is frequently required to walk. The employee must be able to lift and/or move objects up to 25 pounds. Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception and the ability to adjust focus.
LifeStance provides the compensation range and benefits that it in good faith believes it might pay and/or offer for this position. LifeStance reserves the right to ultimately pay more or less than the posted range and offer additional benefits and other compensation, depending on circumstances not related to an applicant's sex or other status protected by local, state, or federal law. #LI-Remote #LI-JK2
LifeStance is an equal opportunity employer. We celebrate diversity and are fully committed to creating an inclusive work environment for all our employees. Learn more about Diversity, Equity and Inclusion at LifeStance.
Benefits
As a full-time employee of LifeStance Health, the following benefits are offered: medical, dental, vision, AD&D, short and long-term disability, and life insurance. Additional benefits include a 401k retirement savings with employer match, paid parental leave, paid time off, holiday pay and an Employee Assistance Program.

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