Senior Software Engineer (Contract to Hire) jobs in United States
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Sully.ai · 2 hours ago

Senior Software Engineer (Contract to Hire)

Sully.ai is building impactful healthcare solutions powered by AI. The Senior Software Engineer will design, implement, and optimize core components across frontend, backend, and model integrations, working closely with co-founders to drive engineering direction.

Artificial Intelligence (AI)Health CareHospitalMachine LearningSoftware

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

Qualification

ReactTypeScriptNode.jsLLM-powered applicationsAPI designCI/CD pipelinesCloud infrastructureUI/UX cohesionPerformance metricsError budgets

Required

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

Company

Sully.ai

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AutonomousOS for healthcare organizations

Funding

Current Stage
Growth Stage
Total Funding
$29.96M
Key Investors
Amity Ventures
2025-01-24Series A· $21.83M
2024-04-01Seed· $8.13M

Leadership Team

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Ahmed Nasser
Co-Founder, President & COO
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Company data provided by crunchbase