< 10 employees
< 10 engineers
$1m - $2m funding
Pre-series a

We leverage some of the largest fitness datasets in the world to create leapfrog products in the health and fitness industry. Our weight lifting algorithm is our first product and the flagship feature of our iOS app.

FitnessAI photo 1

Why join us?

  • If you are a talented iOS engineer and LOVE weight lifting, working at FitnessAI could be your DREAM JOB!

  • Work at a laser focused YC backed startup making fitness more achievable for all, primarily via Weight Lifting. I went through Y Combinator (W20, right before COVID), raised a $1.6M seed from very notable investors (including Ryan Hoover, Shrug Capital and previous execs at Uber and Twitter).

  • Fastest growing weight lifting app in the world, well over 1M in ARR within our first year of launch and profitable.

  • I'm a technical CEO who exited my first company, am both a Y Combinator & Techstars alum, and have created multiple products that went viral. I also built FitnessAI on my own (this is my first hire)

  • I promise to teach you everything I know relating to startups

    • engineering
    • product management
    • design
    • growth
    • fundraising / getting into accelerators like YC and Techstars

    & much more! Your long term goals are my own (whether they are to stay at FitnessAI or not!)

Engineering at FitnessAI

Engineering team and processes

Our engineering team is me, the CEO 👋 I've written every line of code so far and have a very technical background. I treat cancellation reasons as my backlog for feature requests and try to push to the App Store every week.

Technical Challenges

We're building machine learning fitness algorithms powered by over 6M weight lifting workouts from 40K people. This is larger than any publicly available dataset on the subject.

Projects you might work on
  • Rearchitect the app (or API) using best practices

  • Redo our onboarding flow to better capture people's needs during the pandemic (workout from home, limited equipment, etc)

  • Rework our exercise recommendation algorithm

Tech stack
Google App Engine

Working at FitnessAI

I'm the only person who's put work into building FitnessAI so far – everything from branding to actual coding. I'm looking for similar Jacks / Janes of all trades who are incredibly detail oriented and feel they understand things better than most.

If these traits describe you, I would love to chat!

  • Relentless problem solving
  • Incredible optimism
  • Quick to make decisions
  • Values failures as much as successes
  • Excited by efficiency
  • Interested in Engineering, Design, and Growth
Perks & benefits
  • Generous Vacation


  • Gym/Fitness

    $200/mo to any gym you want

  • Beautiful Office

    Cool office in Dumbo with full gym, showers, etc

  • Pet Friendly

    Dogs + Cats welcome!

  • Flexible Hours

    Performance is king

  • Work from Home

    Work from anywhere. Our office is available to you adhoc

  • Philanthropic Contributions

    1:1 match for any employee donations to nonprofit 501(c)(3) organizations, up to $500/year

Our Team by the Numbers

Interested in this company?
Skip straight to final-round interviews by applying through Triplebyte.