Lead Full-Stack Engineer - Backend Focus

Relha LLC; New York, Northern (NY, KY); Hybrid; USD 155,000 - 213,000; Full time

Job summary

Humana's CenterWell is seeking a Lead Full-Stack Engineer to design and build the platform and API layer that connects AI capabilities, data systems and product frontends for care teams and patients. You will influence API design, security patterns, and deployment practices across the team.

You will own backend systems end-to-end, work with REST/GraphQL APIs, and contribute to the UI using Next.js and React. The role requires strong TypeScript/Python skills and a track record of scalable systems.

Qualifications

• BS or MS in Computer Science, Engineering, or a related field (or equivalent experience).
• 8+ years of software engineering experience with deep backend/platform expertise.
• Strong proficiency in TypeScript and/or Python for API and service development.
• Proven track record building scalable 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)

Responsibilities

• Platform and API Architecture: Design and lead development of core backend services, REST and GraphQL APIs, and service-to-service integrations.
• Security and Compliance by Design: Establish patterns for authentication, authorization, rate limiting, PHI access control, and audit logging.
• AI and LLM Integration Patterns: Define and implement reusable patterns for integrating AI capabilities into product APIs.
• Observability and Reliability: Build logging, monitoring, and alerting infrastructure for scale and reliability.
• Full-Stack Feature Delivery: Contribute to product features end-to-end using TypeScript and Next.js, from APIs to UI.

Skills

Backend engineering

TypeScript

Python

API design

Security patterns

HIPAA knowledge

Next.js/React

End-to-end ownership

Education

Bachelor's or Master's in CS/Engineering

Tools

Next.js

React

OAuth2/OIDC

Job description

The Lead Software Engineer codes software applications based on business requirements. The Lead Software Engineer works on problems of diverse scope and complexity ranging from moderate to substantial.

As Centerwell builds its AI engineering function from the ground up, we need a platform foundation strong enough to support everything that comes next. As Lead Full-Stack Engineer focused on platform and API engineering, you will design and build the service layer that connects AI capabilities, data systems, and product frontends—setting the standards for how services are built, secured, and operated across the team.

You will work with meaningful architectural scope, making decisions that span API design, security patterns, and deployment practices. The platform you build will serve care teams and patients across hundreds of Centerwell clinics. If you want to build platforms that others build on—and do it in service of better primary care—this is the role for you.

Key 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.

Use your skills to make an impact

Required Qualifications

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)

Preferred Qualifications

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

Additional Information

The candidate must live close to one of our designated IT locations: NYC, NY; Louisville, KY; Tampa, FL; Fort Lauderdale, FL; Dallas/Frisco, TX; Boston, MA; Washington, D.C: Atlanta, GA, Nashville, TN, Chicago, IL, or Charlotte, NC.

Work at Home Requirements: To ensure Home or Hybrid Home/Office employees’ ability to work effectively, the self-provided internet service of Home or Hybrid Home/Office employees must meet the following criteria: At minimum, a download speed of 25 Mbps and an upload speed of 10 Mbps is required; wireless, wired cable or DSL connection is suggested. In certain roles, the minimum recommended internet speed required by Humana may not be sufficient for business needs. Humana reserves the right to require associates to upgrade their internet service if necessary. Work from a dedicated space lacking ongoing interruptions to protect member PHI / HIPAA information.

Travel: While this is a remote position, occasional travel to Humana's offices for training or meetings may be required.

Scheduled Weekly Hours

40

Pay Range

The compensation range below reflects a good faith estimate of starting base pay for full time (40 hours per week) employment at the time of posting. The pay range may be higher or lower based on geographic location and individual pay will vary based on demonstrated job related skills, knowledge, experience, education, certifications, etc.

$155,200 - $213,400 per year

This job is eligible for a bonus incentive plan. This incentive opportunity is based upon company and/or individual performance.

Description of Benefits

Humana, Inc. and its affiliated subsidiaries (collectively, “Humana”) offers competitive benefits that support whole-person well-being. Associate benefits are designed to encourage personal wellness and smart healthcare decisions for you and your family while also knowing your life extends outside of work. Among our benefits, Humana provides 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 and many other opportunities.

About Us

About Humana: Humana Inc. (NYSE: HUM) is a leading U.S. healthcare company. Through our Humana insurance services and our CenterWell healthcare services, we make it easier for the millions of people we serve to achieve their best health – delivering the care and service they need, when they need it. These efforts are leading to a better quality of life for people with Medicare and Medicaid, families, individuals, military service personnel, and communities at large. Learn more about what we offer atHumana.comand atCenterWell.com.

Equal Opportunity Employer

It is the policy of Humana not to discriminate against any employee or applicant for employment because of race, color, religion, sex, sexual orientation, gender identity, national origin, age, marital status, genetic information, disability or protected veteran status. It is also the policy of Humana to take affirmative action, in compliance with Section 503 of the Rehabilitation Act and VEVRAA, to employ and to advance in employment individuals with disability or protected veteran status, and to base all employment decisions only on valid job requirements. This policy shall apply to all employment actions, including but not limited to recruitment, hiring, upgrading, promotion, transfer, demotion, layoff, recall, termination, rates of pay or other forms of compensation and selection for training, including apprenticeship, at all levels of employment.