Ondrej Rehacek

I'm a software engineer from the Czech Republic interested in investing, engineering and creating new things. I've had the privilege of collaborating with renowned founders and engineers from leading companies such as Google, Facebook, Apple, and more.

April 8, 2025

Test Post

April 9, 2024

Embracing Vim: The Unsung Hero of Code Editors

April 8, 2024

Spaces vs. Tabs: The Indentation Debate Continues

April 7, 2024

The Power of Static Typing in Programming

Head Of Developer Experience, Founding Team Member@ Stash Interactive Inc.
August 2023 - Present
San Francisco, California, United States

Lead developer of Unity SDK. Maintained documentation and sample games. Partner communication and engineering.

Lead Partner Engineer@ Fractal.is
January 2023 - January 2024
United States

Developed Unity and Unreal Engine SDK. Maintained documentation and handled partners' communications.

Solana Security Auditor & Researcher@ Ackee Blockchain
July 2022 - December 2023
Prague, Czechia

Security auditing and researching exploits in Solana programs (Rust & Anchor). Co-author of Solana Handbook & School of Solana main lecturer.

Lead Application Engineer@ Artinii.Pro
March 2020 - November 2023
Prague, Czechia

Lead designer and developer of media players for DRM-protected content. Lead player developer for iOS, MacOS and web.

Full Stack Engineer@ ACRIOS Systems
January 2020 - June 2022
Ostrava, Czech Republic

Designed and developed application for automatic sheet-metal part calculation. Frontend engineer for hospital management software and IoT management system.

Full Stack Engineer@ SECTRON
January 2019 - March 2021
Ostrava, Czech Republic

Full Stack engineer for warehouse management software using RFID readers. Developed various tools for IoT and firmware for IoT sensors.

Co-Founder@ Dustee Technologies
March 2018 - March 2020
Ostrava, Czech Republic

Designed and developed "Dustee Home" air pollution sensor using ESP8266 platform. Won 3 of 5 prizes in Green Light competition.

Master's degree, Information Technology@ VSB - Technical University of Ostrava
January 2016 - July 2019
Ostrava, Czech Republic
Master's degree, Computer Software Engineering@ 동국대학교
January 2017 - January 2018
Seoul, South Korea
Bachelor's degree, Information Technology@ VSB - Technical University of Ostrava
January 2013 - July 2016
Ostrava, Czech Republic
Bachelor's degree, Information Technology@ Tampere University of Technology
January 2014 - December 2014
Tampere, Finland
  • Winter School of Solana 2023 - Main Lecturer
  • Summer School of Solana 2022 - Lecturer