Principal Machine Learning Engineer

August 19

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hims & hers

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Healthcare Insurance • eCommerce • Wellness

Hims & Hers is an online platform with over 1 million subscribers that connects patients to licensed healthcare professionals across all 50 states in the U. S. The service offers comprehensive support for sexual health, weight loss, hair regrowth, mental health, and skincare through a 100% online process. Clients can receive personalized treatment plans which may include prescription medications, and benefit from free and discreet shipping. Hims & Hers prides itself on providing accessible and affordable healthcare without the need for insurance, offering transparent pricing and support from licensed providers. It aims to empower individuals by making healthcare and treatment conveniently available on their own terms, including mental health support, which includes treatments for anxiety and depression.

201 - 500 employees

Founded 2017

⚕️ Healthcare Insurance

🛍️ eCommerce

🧘 Wellness

📋 Description

• Establish foundational design patterns and infrastructure practices that ensure systems are scalable, resilient, secure, and maintainable • Work hands-on with Python and ML frameworks like PyTorch to prototype, optimize, and guide implementation of complex model pipelines and platform components • Align high-impact technical decisions with long-term product strategy by partnering with platform, product, and clinical teams • Architect and evolve robust ML infrastructure to support continuous training, real-time inference, evaluation, and observability • Lead cross-functional initiatives that simplify system complexity, improve developer velocity, and increase organizational leverage • Shape quality strategies across teams by defining standards for testing, observability, performance, and operational risk • Mentor senior and staff engineers across squads, supporting their growth as systems thinkers and technical leaders • Champion a culture of sustainable speed, system ownership, and architectural clarity across product and platform teams

🎯 Requirements

• 10+ years of experience in Machine Learning and/or Engineering, with a strong track record of technical leadership and system architecture across teams or business areas • Expert-level proficiency in Python and advanced ML frameworks such as PyTorch or TensorFlo • Demonstrated success in designing, scaling, and evolving ML platforms that support production-grade training, deployment, real-time inference, and monitoring • Deep experience in LLMs and NLP, including transformer models, summarization, conversational agents, and embedding-based retrieval • Advanced understanding of ML infrastructure, including continuous training, system observability, performance optimization, and platform reliability • Experience with ML infrastructure tools such as Databricks, MLFlow, SageMaker, or equivalent • A Master’s degree or PhD in Computer Science, Machine Learning, or a related field (not strictly required) • Exceptional communication and cross-org leadership skills, with the ability to align diverse technical and non-technical stakeholders around ML strategy and long-term architecture

🏖️ Benefits

• 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