Staff Full-Stack Engineer, Applied AI

Hims & Hers is the leading health and wellness platform, on a mission to help the world feel great through the power of better health. We are redefining healthcare by putting the customer first and delivering access to care that is affordable, accessible, and personal, from diagnosis to treatment to delivery. No two people are the same, so we provide access to personalized care designed for results. By normalizing health & wellness challenges and innovating on their solutions, we’re making better health outcomes easier to achieve. 

Hims & Hers is a public company, traded on the NYSE under the ticker symbol “HIMS.” To learn more about the brand and offerings, you can visit hims.com/about and hims.com/how-it-works . For information on the company’s outstanding benefits, culture, and its talent-first flexible/remote work approach, see below and visit www.hims.com/careers-professionals.

We’re hiring a Staff Full-Stack Engineer to help drive the next generation of AI-powered healthcare experiences. This is a highly technical role with broad cross-functional impact. You’ll partner with product teams across the company — including Pharmacy, E-commerce, Care, and Core Platform — to design and ship AI-powered features for both external users and internal teams.

You will set technical direction, lead architectural decisions, and create the foundational systems that enable fast, safe, and reliable AI development. This role is ideal for someone who enjoys fast iteration, values a product-driven mindset, and can balance high velocity with uncompromising standards for safety and quality.

• Design and own core AI workflow platforms, orchestration systems, and shared SDKs that power intelligent healthcare experiences.

• Build scalable, reliable systems for LLM orchestration, grounding, evaluation, and agent-like workflows.

• Create reusable frameworks and patterns that other engineering teams can adopt across the company.

• Drive multi-quarter technical initiatives and help bridge AI research prototypes with production-grade systems.

• Work with Pharmacy, E-commerce, Care, and Operations to bring AI-powered features to life, from patient-facing journeys to internal efficiency tools.

• Collaborate on product strategy, helping translate ambiguous ideas into clear technical plans.

• Support teams in releasing features quickly through incremental, high-velocity delivery cycles.

• Ensure user-facing AI experiences meet expectations for performance, reliability and usability.

• Develop evaluation frameworks and observability systems that measure AI behavior, grounding, safety, and quality.

• Establish guardrails and patterns that ensure all AI interactions comply with HIPAA, security-by-design, and privacy-first principles.

• Work with clinical, legal, and AI safety partners to ensure our systems are trustworthy and appropriate for healthcare use.

• Mentor engineers and help cultivate strong engineering practices across the Applied AI organization.

• Lead design reviews and contribute to architectural governance across engineering teams.

• Improve developer experience and remove platform bottlenecks that slow down product teams.

• Raise the overall quality bar by championing clear standards for reliability, observability, testing, and iteration.

• Develop features and infrastructure using TypeScript (AWS, Cloudflare Workers, React/Next.js) and Python (Databricks, orchestration, evaluation).

• Integrate and evaluate LLMs and ML systems through unified AI gateway.

• Build secure APIs and connectors that link to domains like EHR, Pharmacy, Payments, Orders, and Care.

• Contribute to shared libraries that standardize schemas, tool contracts, and developer experience.

• 8+ years of professional experience across backend services, frontend applications, distributed systems, and data/ML tooling.

• Strong proficiency in TypeScript and Python, with experience building production systems in both languages.

• Deep familiarity with LLM- or ML-based systems and the architectural patterns needed to operate them safely at scale.

• Experience leading major technical initiatives that span multiple teams or product areas.

• A product-driven mindset with a bias toward fast, incremental delivery and continuous learning.

• Strong communication and collaboration skills across engineering, product, design, operations, and clinical teams.

• A deep appreciation for safety, privacy, and security — ideally with experience in a regulated domain such as healthcare, fintech, or life sciences.

• Experience with Databricks, Cloudflare Durable Objects, vector databases, or edge-based AI orchestration.

• Prior work on AI evaluation systems, LLM behavior monitoring, or safety frameworks.

• Contributions to open-source SDKs or complex infrastructure projects.

• Experience building tools that significantly increase developer velocity.

At Hims & Hers, you’ll be part of a small, high-impact team defining how we build and scale AI-first healthcare products. Your work will directly shape the company’s future — laying the foundation for safe, intelligent, and personalized care experiences for millions of people.

Join us in building the systems that make healthcare smarter, safer, and more human.

• Competitive salary & equity compensation for full-time roles

• Unlimited PTO, company holidays, and quarterly mental health days

• Comprehensive health benefits including medical, dental & vision, and parental leave

• Employee Stock Purchase Program (ESPP)

• 401k benefits with employer matching contribution

• Offsite team retreats

We are committed to building a workforce that reflects diverse perspectives and prioritizes ethics, wellness, and a strong sense of belonging. If you're excited about this role, we encourage you to apply—even if you're not sure if your background or experience is a perfect match.

Hims considers all qualified applicants for employment, including applicants with arrest or conviction records, in accordance with the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance, the California Fair Chance Act, and any similar state or local fair chance laws.

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Hims & Hers is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or an accommodation due to a disability, please contact us at [email protected] and describe the needed accommodation. Your privacy is important to us, and any information you share will only be used for the legitimate purpose of considering your request for accommodation. Hims & Hers gives consideration to all qualified applicants without regard to any protected status, including disability. Please do not send resumes to this email address.

To learn more about how we collect, use, retain, and disclose Personal Information, please visit our Global Candidate Privacy Statement.