Principal Machine Learning Engineer
Hims & Hers2 days ago
Base Salary
$180k - $200k/yr
Responsibilities
- Define and drive the architectural vision for scalable ML and LLM systems supporting treatment recommendation, personalization, and intelligent care delivery.
- Architect and evolve ML infrastructure for continuous training, real-time inference, evaluation, monitoring, and observability.
- Use Python and ML frameworks such as PyTorch to prototype, optimize, and guide complex model pipelines and platform components.
- Establish design patterns and infrastructure practices for scalable, resilient, secure, and maintainable systems.
- Partner with platform, product, and clinical teams to align technical decisions with long-term product strategy.
- Lead cross-functional initiatives that reduce complexity, improve developer velocity, and increase organizational leverage.
- Define standards for testing, observability, performance, and operational risk across teams.
- Mentor senior and staff engineers and promote sustainable system ownership and architectural clarity.
Requirements
- 10+ years of experience in machine learning and/or engineering, including technical leadership and system architecture across teams or business areas.
- Expert-level proficiency in Python and advanced ML frameworks such as PyTorch or TensorFlow.
- Demonstrated experience designing, scaling, and evolving production ML platforms for training, deployment, real-time inference, and monitoring.
- Deep experience with LLMs and NLP, including transformer models, summarization, conversational agents, and embedding-based retrieval.
- Advanced understanding of ML infrastructure, continuous training, observability, performance optimization, and platform reliability.
- Experience with ML infrastructure tools such as Databricks, MLflow, SageMaker, or equivalent.
- Master’s degree or PhD in Computer Science, Machine Learning, or a related field is preferred but not strictly required.
- Exceptional communication and cross-organizational leadership skills.
Benefits
- Competitive salary and equity compensation for full-time roles.
- Unlimited PTO, company holidays, and quarterly mental health days.
- Medical, dental, vision, and parental leave benefits.
- Employee Stock Purchase Program and 401(k) with employer matching contribution.
- Offsite team retreats.
- Talent-first flexible/remote work approach.
Categories
About Hims & Hers
Hims & Hers operates a direct-to-consumer telehealth and pharmacy platform for men’s and women’s health, offering online visits, prescriptions, and over‑the‑counter products for conditions like hair loss, sexual health, dermatology, and mental health. It monetizes through subscriptions and product sales, with nationwide shipping and affiliated providers and pharmacies. Founded in 2017 and headquartered in San Francisco, the company went public on the NYSE under the ticker HIMS in 2021.