Full Stack Engineer
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Job Description
Full Stack Engineer building AI agents and healthcare operations software at 3Y Health. Owning web, mobile, backend, infrastructure, and production workflows end to end.
Responsibilities:
- Design and build AI agents and automated workflows for clinic operations, including insurance benefits verification, prior authorizations, patient intake, claims, and clinical documentation
- Build web and mobile features for clinicians, patients, families, and the internal operations team
- Take ambiguous problems from concept to first production version with operators and clinicians
- Define problems, write specifications, and ship features
- Design services, data models, and APIs
- Manage infrastructure as code
- Own production services, including deployments, monitoring, and incident response
- Write evaluations for model-facing features and track workflow metrics
- Handle protected health information safely using least-privilege access, no PHI in logs, and auditable changes
- Build and maintain skills, plugins, MCP integrations, and review bots used with Claude Code and Codex
- Work across the full platform in a flat engineering team
Requirements:
- 5+ years of experience building and shipping production software
- Recent, hands-on experience using or building AI harnesses beyond model API calls, including project instructions, tools and MCP servers, skills, hooks, subagents, or evals
- At least one personal project built and published on the web, live and usable by anyone
- Ideally, experience with a SaaS project with working payments such as Stripe
- Strong full-stack skills in Python and TypeScript across frontend, backend, databases, and cloud infrastructure
- Experience working in a large, established codebase
- Hands-on experience with LLMs, including tool use, agent orchestration, structured outputs, retrieval, and evaluations
- Daily use of AI coding agents such as Claude Code, Codex, or Cursor
- Ability to configure AI coding agents with project instructions, skills, MCP servers, hooks, and subagents; run multiple tasks in parallel; and review output carefully
- Product sense and ability to make UI decisions without a dedicated designer
- Ability to work independently and unblock yourself
- Clear written communication
- Nice to have: healthcare or regulated-industry experience, including HIPAA, payer and claims workflows, EHR integrations, or HL7/FHIR
- Nice to have: Temporal or another durable workflow engine
- Nice to have: React Native
- Nice to have: production LLM evaluations or safety checks
- Nice to have: personal agent harness, MCP server, or coding-agent plugin
- Nice to have: open-source work or internal tools used by others
Benefits:
- Remote work arrangement
- Contract employment
- Opportunity to work with AI coding agents and modern AI technologies
- Opportunity to build products for healthcare practices
- Work with distributed teams across time zones
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