Who can apply: US-based role. The employer has not said which states are eligible — confirm before applying.

Location as listed by the employer: “US - Remote”

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About this role

Hims And Hers is hiring for a Sr. Staff Machine Learning Systems Engineer role (full-time). See the official posting for full details.

Requirements

10+ years of experience in ML infrastructure, data engineering, or evaluation/testing systems, with a track record of impact that reaches beyond a single team or project.
Hands-on depth in evaluation systems: designing and calibrating LLM judges/scorers, building statistically sound regression-testing methodology (e.g., paired significance testing with proper correction for multiple comp…
Hands-on depth in data pipeline engineering: dataset versioning, feature and benchmark pipelines, labeling and calibration workflows, and high-throughput ingestion and transformation systems.
A history of building things that became the standard approach for others — not just solving your own problem, but changing how a broader group of people tackle a category of problem.
Experience leading multi-team projects to completion, including navigating and resolving genuine technical disagreement along the way.
A track record of mentoring other engineers, including senior ones, and visibly raising the bar for the teams around you.
Excellent communication — comfortable adapting the same idea for different audiences, and confident building support for it well before launch.
Strong Python, and enough statistical fluency to design and defend a testing framework that real production decisions ride on.

Summarized from the employer's posting — check the full posting for every requirement.

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