Software Developer

DANIIL ROSTOVSKII

Software engineer with 5+ years building real-time interactive systems — games, VR training platforms, robotics. The kind of software where a missed frame is a bug and the hardware budget is fixed. Based in Tokyo, Japan.

What I’ve shipped:

• Systems & reverse engineering — Reverse-engineered undocumented USB HID protocols and wrote an Android driver (Java/JNI) for force-feedback steering wheels at AVIAR, where I delivered 10+ VR training scenarios for Lufthansa, Swissport, and DHL. First standalone VR product with native wheel support — removed the €1,000+ PC per training station.

• Architecture & platform consolidation — Merged 12 independent safety training simulators into one modular codebase at PromVR: Zenject DI, licensing with CRM integration, automated multi-platform builds. One codebase to maintain instead of twelve.

• Performance engineering — Solo-developed JankerMan, a VR roguelike on full DOTS/ECS: hundreds of concurrent enemies at 72 FPS on mobile-class hardware (Meta Quest 2) — data-oriented design, Burst, Job System.

• Developer tools & SDKs — Extended the Varwin no-code platform with 40+ visual programming blocks (+25% standard library) and 100+ pages of SDK documentation, used by 90+ clients across 24 countries. Built VR analytics tools for Jacobs and Auchan retail research.

Languages: C# • Python • Java • C/C++ (embedded)

Engineering: Unity DOTS/ECS (Burst, Job System) • Multiplayer Networking • Custom Physics & IK • Behavior Trees • Dependency Injection (Zenject) • UniRx/UniTask • SOLID

Also worked with: ROS • OpenCV • Electron/IPC • REST & CRM integrations • CI/CD

Open to: Software Engineering

Game & XR Development

Real-time Systems