Oleksandr Kornijčuk

• Rebuilt two enterprise applications from pre-Core .NET onto .NET 10 with React front ends, replacing n-tier monoliths with a modular monolith architecture — a training records system and a task tracker serving ~2,000 users across two units, now preparing for organisation-wide rollout. • Built the task tracker's iPhone client in .NET MAUI against the same backend API, giving field users mobile access without a second codebase or a separate team. • Stood up Keycloak on Linux and migrated applications off AD

• Designed and built simulation software in Python for lamellar microstructures in polycrystalline materials, with the Institute of Physics of the Czech Academy of Sciences. • Modeled deformation twinning from physical first principles using the Voro++ computational geometry library. • First author of the resulting paper (arXiv:2507.14405), submitted for publication.