Human Factors Engineer (Contract)

500M+ downloads. 80M+ monthly users. A decade of building – and we’re still accelerating.

Flo is the world’s #1 health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 – and we’re not slowing down.

With 7M paid subscribers and the highest-rated experience in the App Store’s health category, we’ve spent 10 years earning trust at scale. Now, we’re building the next generation of digital health – AI-powered, privacy‑first, clinically backed – to help our users know their body better.

The job

Flo is seeking an experienced candidate for a contracting role in human factors engineering. The job involves leading usability assessments and managing risk for medical devices, engaging with cross‑functional teams, and contributing to regulatory submissions. This role will be embedded wi...