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Senior Software Engineer, Test

Job type: Full Time · Department: Engineering · Work type: Remote · USD 165000 - 180000 / year

Mountain View, California, United States

About Us

At Sully.ai, We’re Building the Most Impactful Healthcare Company on Earth

We believe that access to a great doctor is a basic human right. Today, that’s not a reality. Delays, misdiagnoses, administrative chaos, and burnout plague the system.

Our Mission: One Human, One Doctor. We build AI teammates that augment clinicians — scribes, nurses, receptionists, translators — all powered by our own world-class models and deployed in real-world care.

Our Traction

  • 450+ organizations signed 16 months

  • AI agents cut admin by ~2.8 hours daily and reduce onboarding 85%.

  • 5M+ Clinical Tasks completed to date, serving 36+ specialties.

  • Raised $25M from YC, Eric Yuan, Amity, Semper Virens

  • Patented AI architecture (MedCon-1) outperforms GPT-4.5, Gemini, Claude on clinical reasoning tasks

Sully requires A-players capable of 4 months = 1 year output.

What You’ll Do

  • Own automated testing for Sully’s AI voice and workflow platform

  • Build test coverage across APIs, AI pipelines, integrations, and core user flows

  • Partner with backend, ML, and product to bake testability into features

  • Validate AI behavior, edge cases, and regressions in real healthcare scenarios

  • Build fast, reliable CI test pipelines that block bad deploys

  • Load and reliability test high-volume call and workflow traffic

What You Must Bring

  • 5+ years in software engineering or SDET roles

  • Required early startup experience or have previously founded a SaaS company

  • Strong Python and backend testing experience

  • Deep experience testing APIs and distributed systems

  • Hands-on ownership of CI/CD and test infrastructure

  • Clear communicator who can influence engineering decisions

First-Month Focus

  • Identify highest-risk failure points across voice, AI, and integrations

  • Ship initial automated tests that cover critical paths

  • Set baseline quality metrics and gaps in test coverage

90 Day OKRs

  • Understand Sully’s architecture and highest-risk workflows

  • Ship meaningful automated coverage for core systems

  • Stand up CI tests that materially reduce production incidents

Who Thrives Here

  • Entrepreneurial to your core: You think in outcomes, thrive in chaos, and take ownership without limits

  • Mission-obsessed: You’re here to save lives, not just ship features — patients and doctors are your why.

  • Impact-driven & fast-moving: You sprint toward hard problems and ship with sharp judgment.

  • Elite teammate: You raise the bar through high standards, direct feedback, and craft excellence.

Why Join Sully.ai?

🔥 Revolutionizing the antiquated $800B+ Healthcare market

🧠 50%+ of us are ex-founders. We hire A-players, not passengers

⚡️ Speed matters - we operate with urgency, autonomy, and ownership

🧪 You’ll work on real, first-of-their-kind problems at the edge of AI and medicine

❤️ Your work helps doctors reclaim their time - and patients get better, faster care

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