Waystar

Software Development Engineer in Test (SDET) - Full Stack

Waystar$85K — $110K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Computer Science or related field, or equivalent experience
  • 3+ years as an SDET with full-stack test automation experience
  • Hands-on with Playwright and/or Selenium for end-to-end testing
  • Strong programming skills in C#
  • Intermediate SQL proficiency
  • Experience with CI/CD pipelines
  • Familiarity with Jira and/or Azure DevOps for agile management

Responsibilities

  • Design, implement, and maintain complex automated tests including performance and security testing
  • Leverage AI tools for test planning, acceleration, and analyzing coverage gaps
  • Take ownership of testing efforts for assigned products with autonomous work
  • Collaborate with engineering, product, and business partners to establish quality expectations
  • Champion a 'quality-from-the-start' mindset in discussions and release readiness
  • Document and track defects through resolution
  • Continuously improve testing processes and frameworks across the team

Benefits

  • Competitive total rewards including base salary and possible bonus
  • Customizable benefits package with multiple medical plans
  • Generous paid time off policies including 3 weeks plus 13 paid holidays
  • Paid parental leave for both maternity and paternity
  • Education assistance and access to LinkedIn Learning
  • Mental health support and family planning programs
  • 401(K) with company match
  • Pet insurance and employee resource groups
Full Job Description
ABOUT THIS POSITION

As a Software Development Engineer in Test (SDET), you will join an established, cross-functional product development team responsible for delivering high-quality software and data to our clients. You will own both automated and manual testing efforts across multiple products, partnering closely with engineers, product managers, and business stakeholders.

This role is ideal for someone who thrives on autonomy, values clear communication, and is excited to use AI as a force multiplier to design thoughtful test strategies and robust automated solutions. You'll be trusted to manage your work independently while proactively sharing risks, insights, and opportunities for improvement with the team.

You will act as a quality champion, helping embed quality practices early in the development lifecycle and coaching others on modern testing and quality engineering best practices.

WHAT YOU'LL DO

What You Will Do

As an SDET on the team, you will:

  • Design, implement, and maintain complex automated tests (end-to-end, performance, load, scalability, and security) using tools such as Playwright and/or Selenium


  • Leverage AI tools to:


  • Create and refine test plans and test strategies


  • Accelerate automated test creation and maintenance


  • Analyze test results and identify coverage gaps


  • Generate realistic and meaningful test data scenarios


  • Take ownership of testing efforts for assigned products, managing your work autonomously while communicating progress, risks, and blockers early


  • Collaborate closely with engineering, product, and business partners to understand requirements, architecture, and desired outcomes


  • Champion a "quality-from-the-start" mindset by influencing design discussions, acceptance criteria, and release readiness


  • Set and help drive clear quality expectations for each product release


  • Document, track, and validate defects through resolution


  • Continuously improve testing processes, tools, and frameworks that strengthen quality across the team and organization


  • Contribute positively to team culture by being kind, collaborative, curious, and engaged in your work


WHAT YOU'LL NEED

What You Will Need

Minimum Requirements

  • Bachelor's degree in Computer Science or a related field (or equivalent practical experience)


  • 3+ years of professional experience as an SDET designing, developing, and maintaining full-stack test automation for modern web applications and microservices


  • Hands-on experience with Playwright and/or Selenium for end-to-end testing


  • Strong programming skills in C#


  • Intermediate proficiency with SQL


  • Experience working with CI/CD pipelines


  • Experience using Jira and/or Azure DevOps (ADO) to support agile project management, sprint work, and defect tracking


  • Excellent written and verbal communication skills, with the ability to clearly explain risks, findings, and recommendations


What Will Set You Apart

  • Comfort using AI tools as part of your daily workflow, with curiosity about how they can improve test quality and efficiency


  • A proven ability to work independently while remaining highly communicative and collaborative


  • A mindset that balances high standards with kindness, empathy, and respect for teammates


  • Excitement about learning, improving systems, and contributing to something larger than your own individual tasks


WAYSTAR PERKS
  • Competitive total rewards (base salary + bonus, if applicable)
  • Customizable benefits package (3 medical plans with Health Saving Account company match)
  • We offer generous paid time off for our non-exempt team members, starting with 3 weeks + 13 paid holidays, including 2 personal floating holidays. We also offer flexible time off for our exempt team members + 13 paid holidays
  • Paid parental leave (including maternity + paternity leave)
  • Education assistance opportunities and free LinkedIn Learning access
  • Free mental health and family planning programs, including adoption assistance and fertility support
  • 401(K) program with company match
  • Pet insurance
  • Employee resource groups


About Waystar

Waystar is a healthcare technology company that simplifies and unifies the revenue cycle with innovative technology that allows clients to collect more with less cost and less stress. The company's cloud-based platform streamlines workflows, improves financials and reduces administrative waste for healthcare providers. Waystar's technology automates the entire revenue cycle, from patient access to reimbursement, for more than 450,000 healthcare providers across the United States. The company was formed in 2017 through the merger of Navicure and ZirMed.
Learn more about Waystar
Size
2,000 employees
Industry
Founded
2000

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