hims & hers

Principal Machine Learning Engineer

hims & hers

full-time

Posted on:

Origin:  • 🇺🇸 United States

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Salary

💰 $260,000 - $280,000 per year

Job Level

Lead

Tech Stack

PythonPyTorch

About the role

  • 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