Fundraising Fox

Ahmad Roumie

Founder

Founder at rex.fit

San Francisco, California, United States

Foundedrex.fit · YC

About

Ahmad Roumie has a background in robotics and has previously worked on autonomous retail systems using computer vision as well as autonomous robot development for various platforms. He is currently building automated nutrition tracking technology.

Likely email· guessed from name + firm domain, not firm-published

Founder at rex.fitYC W23

Intro paths

YC

Ahmad went through Y Combinator (Winter 2023) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Diana Hu, General Partner at Y Combinator — the partner who ran rex.fit's batch and knows the company first-hand. YC profile ↗

In turn, Ahmad can intro founders to rex.fit's investors below.

Co-founders at rex.fit

RM
Rangel MilushevFounding CEO

Experience

  1. SellaraFounder/CTOcurrent2025 — present
  2. Rex.fit (YC W23)Founder/CEO/CTO2023 — 2025
  3. AI Retailer SystemsAI/CV Lead, tech lead (practically CTO)2022
  4. AI Retailer SystemsMachine Learning and Computer Vision Engineer (Founding Engineer)2020 — 2022Zurich, Switzerland
  5. Franke Coffee SystemsComputer Vision/Robotic Calibration Engineer (External)2022
  6. ETH juniorsLead Computer Vision Engineer/project manager2020 — 2022
  7. ETH ZürichMaster Thesis with Prof. Roland Siegwart (Autonomous Systems Lab - ASL)2020Zurich, Switzerland
  8. Waygate TechnologiesRobotics Software Engineer2019 — 2020Zurich, Switzerland
  9. ETH ZürichGraduate Teaching Assistant2018 — 2019Zurich, Switzerland
  10. DuckietownGraduate Teaching Assistant2018 — 2019Zürich Area, Switzerland
  11. LAAS (Lebanese Aerospace and Automotive Society)Co-founder and VP2017 — 2018Beirut Governorate, Lebanon
  12. University of California, BerkeleyVisiting Researcher at Szeri Lab2017
  13. American University of BeirutStudent Researcher2017
  14. American University of BeirutStudent Research Assistant2016 — 2017
  15. MEATrainee at Middle East Airlines Training Center MASCO2016 — 2017Beirut District, Lebanon

Skills & more

Startups10Computer Vision14Large Language Models (LLM)C++19Sales1Python (Programming Language)12Start-ups1Deep learning2Machine Learning2ROS5Git3Linux3
+8 moreMATLABSolidWorksANSYSMathematicaLaTeXVTKQtModel Predictive Control

Languages Arabic · English · French · German · Polish

From Ahmad's professional profile.

Frequently asked questions

Who is Ahmad Roumie?
Ahmad Roumie has a background in robotics and has previously worked on autonomous retail systems using computer vision as well as autonomous robot development for various platforms. He is currently building automated nutrition tracking technology.
Where does Ahmad Roumie work?
Ahmad Roumie is Founder of rex.fit.
What companies did Ahmad Roumie found?
Ahmad Roumie founded rex.fit.
Where did Ahmad Roumie go to school?
Ahmad Roumie studied at Y Combinator; ETH Zürich (Master of Science (MSc), Robotics); American University of Beirut (Bachelor of Engineering - BE, Mechanical Engineering).

Founder mafias

Y Combinator mafia8,773

Also came through, then founded or led a company.

+ 8,766 more

Y Combinator mafia4,716

Also came through, then founded or led a company.

+ 4,709 more

Entrepreneur First mafia599

Also came through, then founded or led a company.

+ 592 more

ETH Zürich mafia103

Also came through, then founded or led a company.

+ 96 more

American University of Beirut mafia8

Also came through, then founded or led a company.

+ 1 more

Same school

Shared employers