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. Were going after all of it.
About the Role
We are seeking a Senior Software Engineer to architect and scale platform-level agentic AI systems. This role combines full-stack engineering excellence with deep expertise in LLM-powered experiences. Youll 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 multi-agent ecosystem.
Key Responsibilities
Architect and implement cross-agent systems that power core 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
is an equal opportunity 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. prohibits any form of workplace harassment.
Required Experience:
Senior IC
Sully.ai saves doctors time with an AI team: Nurse, Receptionist, Scribe, Med Asst, Coder & Pharmacy Tech—seamless handling check-in to prescriptions.