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[Remote] Lead Full-Stack Engineer - Backend Focus

Remote · Japan Full-time

Note: The job is a remote job and is open to candidates in USA. Humana is hiring a Lead Full-Stack Engineer focused on platform and API engineering for CenterWell’s AI product stack. The role leads development of backend services and APIs, establishes security and compliance patterns, integrates AI capabilities, and builds reliable, observable platform infrastructure while contributing to end-to-end product features.

Responsibilities

  • Platform and API Architecture: Design and lead development of core backend services, REST and GraphQL APIs, and service-to-service integrations that connect all layers of Centerwell's AI product stack
  • Security and Compliance by Design:** Establish patterns for authentication, authorization, rate limiting, PHI access control, and audit logging. Ensure HIPAA compliance is embedded in platform design from day one—not bolted on after the fact
  • AI and LLM Integration Patterns:** Define and implement reusable patterns for integrating AI capabilities into product APIs, including LLM routing, streaming responses, tool orchestration, and model output handling
  • Observability and Reliability:** Build logging, monitoring, and alerting infrastructure so the platform is operable and debuggable at scale
  • Full-Stack Feature Delivery:** Contribute to product feature development end-to-end using TypeScript and Next.js, from server-side APIs to rendered UI
  • Architecture Reviews and Standards:**** Drive architecture reviews and define backend engineering standards that the full engineering team builds on

Skills

  • B.S. or M.S. in Computer Science, Engineering, or a related field (or equivalent experience)
  • 8+ years of software engineering experience with deep expertise in backend and platform engineering
  • Strong proficiency in TypeScript and/or Python for API and service development
  • Proven track record building scalable, production-grade REST or GraphQL APIs
  • Solid understanding of authentication (OAuth2, OIDC), API security patterns, and authorization model design
  • Working knowledge of HIPAA requirements, particularly secure transmission, storage, and access control for PHI
  • Experience with Next.js and React sufficient for full-stack feature contribution
  • Demonstrated ownership of complex backend systems end-to-end, from architecture through production operation
  • Hands-on experience with AI-assisted development tools and LLM coding harnesses (Claude Code, Pi Agent, Cursor, Codex, or similar)
  • Experience in healthcare, financial services, or other highly regulated industries
  • Exposure to event-driven architecture, microservices, or API gateway patterns at scale
  • Familiarity with AI/LLM integration patterns, including streaming APIs and tool-use orchestration
  • Experience in a greenfield or team-founding engineering environment

Benefits

  • This job is eligible for a bonus incentive plan. This incentive opportunity is based upon company and/or individual performance.
  • Medical, dental and vision benefits
  • 401(k) retirement savings plan
  • Time off (including paid time off, company and personal holidays, paid parental and caregiver leave)
  • Short-term and long-term disability
  • Life insurance

Company Overview

  • Humana is a health insurance provider for individuals, families, and businesses. It was founded in 1964, and is headquartered in Louisville, Kentucky, USA, with a workforce of 10001+ employees. Its website is http://www.humana.com.
  • Company H1B Sponsorship

  • Humana has a track record of offering H1B sponsorships, with 261 in 2026, 282 in 2025, 246 in 2024, 284 in 2023, 274 in 2022, 212 in 2021, 84 in 2020. Please note that this does not guarantee sponsorship for this specific role.
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