About Us
👏 Team from OpenAI, DeepMind, NASA, GoogleX, Tesla, and 2 physicians: 6 exits, 2 IPOs.
🔥 Our model outperforms Claude, Gemini, and GPT-4.5 on clinical benchmarks.
📈 400+ healthcare orgs signed in 16 months.
⚡️ $25M raised from YC, Amity Ventures, Sequoia scouts, and more.
🌎 $1T+ market opportunity. We’re going after all of it.
About the Role
We are seeking a Senior Software Engineer to architect and scale Sully.ai’s platform-level agentic AI systems within our Engineering Research team. This role combines full-stack engineering excellence with deep expertise in LLM-powered experiences. You’ll design, implement, and optimize core components across frontend, backend, and model integrations, while driving engineering direction in close collaboration with our co-founders. Your work will directly shape the reliability, speed, and cohesion of Sully.ai’s multi-agent ecosystem.
Key Responsibilities
Architect and implement cross-agent systems that power core Sully.ai experiences.
Build and scale full-stack product components using TypeScript/React and Python services.
Integrate LLMs into production workflows with strong contracts, observability, and test coverage.
Develop shared UI components and typed SDKs to unify cross-agent experiences.
Lead engineering direction, collaborating with founders and cross-functional stakeholders.
Hard Requirements
Senior-level full-stack experience in React, TypeScript, and Python.
Proven ability to design, ship, and scale LLM-powered applications.
Expertise in API design, streaming, and CI/CD pipelines.
Strong cloud infrastructure background (AWS, GCP, or Azure).
Track record of building reliable systems with measurable performance and error budgets.
Nice-to-Have
Experience with WebRTC or audio-aware UI design.
Hands-on work with agentic AI frameworks.
History of creating design tokens, SDKs, or cross-agent platforms.
First-Month Focus
Audit current cross-agent flows for UI/UX cohesion.
Implement shared components and typed contracts for reliability.
Establish instrumentation for frontend performance and model round-trip tracing.
Success OKRs (90 Days)
Deliver end-to-end tested, production-grade agentic workflows with <5% error rates.
Launch cross-agent design system and SDK used by at least 2 internal teams.
Establish weekly “deploy and measure” cadence with performance metrics and error budgets.
Culture Fit
Persistent, driven problem solver
Willing to push back on leadership to defend quality/timelines
Thrives in high-ambiguity, fast-paced startup environments
Why Join Sully.ai?
🔥 Shape the Future of Healthcare: Build category-defining partnerships that enable doctors to focus on saving lives.
📈 Early-Stage Impact: Join early and play a critical role in shaping our partnership roadmap and overall company growth.
🌎 Remote-First Culture: Work with a talented, mission-driven team in a flexible, remote environment.
💰 Competitive Compensation: Enjoy a competitive salary, equity, and the opportunity to make a real difference.
🏆 Solve Scalability Challenges: Tackle complex challenges in a rapidly growing company, driving impactful change in healthcare.
Sully.ai is an equal opportunity employer. In addition to EEO being the law, it is a policy that is fully consistent with our principles. All qualified applicants will receive consideration for employment without regard to status as a protected veteran or a qualified individual with a disability, or other protected status such as race, religion, color, national origin, sex, sexual orientation, gender identity, genetic information, pregnancy or age. Sully.ai prohibits any form of workplace harassment.
Top Skills
What We Do
Superhuman medical staff that’s 10x better, 20x cheaper, and 100x faster.
