About
Javier Sanchez is cofounder at Rebolt. Previously, he was a founding engineer at Stack AI, an enterprise AI platform, where he built core product features and recruited engineering talent through the company's growth from seed to Series A. He has also worked as a software engineer at Ubuntu and as a software team lead at UPM Racing, where he developed a LiDAR perception system. He holds a BS in Computer Science and Telecom Engineering from UPM.
Founder at ReboltYC W25
Intro paths
Javier went through Y Combinator (Winter 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Tom Blomfield, Monzo and GoCardless co-founder; Y Combinator partner on leave and Anthropic compute-team member. — the partner who ran Rebolt's batch and knows the company first-hand. YC profile ↗
In turn, Javier can intro founders to Rebolt's investors below.
Rebolt's investors · 2
Co-founders at Rebolt
Experience
- Rebolt (YC W25)Foundercurrent2025 — presentSan Francisco Bay Area
- Stack AIFounding Engineer2023 — 2025San Francisco Bay Area
- CanonicalSoftware Engineer2021 — 2023Dublin, Ireland
- UPM RacingSoftware Engineer | Self-driving (Formula SAE)2020 — 2021Madrid, Community of Madrid, Spain
- EricssonSoftware Engineer2020Madrid, Community of Madrid, Spain
- KPMG EspañaNational Winner and World Finalist | Co-creator Optihealth2019 — 2020Madrid
- Universidad Politécnica de MadridRacing Drones Engineer2018 — 2019Madrid, Community of Madrid, Spain
Skills & more
+5 more
InglésConvolutional Neural Networks (CNN)TypeScriptSketchReact NativeLanguages English · Galician · Spanish
- AWS Solutions Architect – Associate — Amazon Web Services (AWS)
- CSS: The complete guide — Udemy
- React - The Complete Guide (incl Hooks, React Router, Redux) — Udemy
- ROS for beginners — Udemy
- Docker and Kubernetes: The Complete Guide — Udemy
- Agile Project Management — Google
- Project Execution: Running the Project — Google
- Project Planning — Google
- Project Initiation: Starting a Successful Project — Google
- Foundations of Project Management — Google
From Javier's professional profile.
Frequently asked questions
- Who is Javier Sanchez?
- Javier Sanchez is cofounder at Rebolt. Previously, he was a founding engineer at Stack AI, an enterprise AI platform, where he built core product features and recruited engineering talent through the company's growth from seed to Series A. He has also worked as a software engineer at Ubuntu and as a software team lead at UPM Racing, where he developed a LiDAR perception system. He holds a BS in Computer Science and Telecom Engineering from UPM.
- Where does Javier Sanchez work?
- Javier Sanchez is Founder of Rebolt.
- What companies did Javier Sanchez found?
- Javier Sanchez founded Rebolt.
- Where did Javier Sanchez go to school?
- Javier Sanchez studied at Y Combinator; The Exponential Fellowship; Universidad Politécnica de Madrid (Bachelor's degree, Telecommunications Engineering).
Founder mafias
Y Combinator mafia9,496
Also came through, then founded or led a company.
+ 9,489 more
Y Combinator mafia5,145
Also came through, then founded or led a company.
+ 5,138 more
Universidad Politécnica de Madrid mafia43
Also came through, then founded or led a company.
+ 36 more
Canonical mafia7
Also came through, then founded or led a company.
Stack AI mafia3
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended Universidad Politécnica de Madrid123
+ 117 more
Shared employers
Also worked at Rebolt (YC W25)1
Also worked at Stack AI5
Also worked at Canonical9
+ 3 more
Also worked at Ericsson119
+ 113 more