Senior Software Engineer

Sully.ai is dedicated to transforming the healthcare landscape by providing AI-driven solutions that enhance clinician capabilities. As a Senior Software Engineer, you will design, implement, and optimize core components across various technical domains while collaborating closely with the company's co-founders to drive engineering direction.

Responsibilities:

• Design, implement, and optimize core components across frontend, backend, and model integrations, while driving engineering direction in close collaboration with our co-founders
• 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
• 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

Requirements:

• Senior-level full-stack experience in React, TypeScript, and Node.js
• 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