Mark

Mark Tyshchuk
Košice, Slovakia | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
github.com/RoNiN-shadow

SUMMARY
Highly motivated Computer Science student with a strong foundation in low-level program-
ming (C) and object-oriented design (C#, Python). Experienced in open-source contribution,
developing custom data structures, and optimizing high-performance data pipelines. Seeking a
part-time/student software development role to apply strong problem-solving skills to real-world
engineering challenges.

TECHNICAL SKILLS
Languages: C#, Haskell, C, Python, Java, Rust

Tools & Frameworks: .NET, Git, ImageMagick, Cabal, Linux (Arch), Neovim

Languages (Spoken): Ukrainian (Native), English (B2), Slovak (A2)

PROJECTS & OPEN SOURCE
Open Source Contributor: tModLoader (Terraria) | C#, .NET GitHub Link

• Designed and implemented an API Facade (StrikeOtherNPC) to encapsulate complex legacy
combat logic, significantly reducing boilerplate code for the modding community.

• Resolved a critical cross-platform concurrency bug by enforcing OS-level exclusive file access
through .NET FileStream configurations, preventing data corruption on Linux servers.

Open Source Contributor: ripdrag | Rust, GTK4, Linux OS GitHub Link

• Resolved a file permission bug preventing drag-and-drop functionality into strictly sandboxed
Flatpak applications (e.g., Telegram).

• Refactored the GTK4 data provider in Rust to utilize native FileList APIs, ensuring proper
integration with xdg-desktop-portal for secure cross-sandbox file access.

Terminal 2048 Clone (k-game) | Haskell, Brick, Cabal GitHub Link

• Rewrote a legacy C implementation into a declarative Haskell application using the Brick
TUI library, significantly reducing codebase size and architecture complexity.

• Leveraged pure functional state management for game loop logic and grid transformations.

Playfair Cipher CLI | Haskell GitHub Link

• Developed a command-line cryptographic tool implementing the Playfair cipher for text en-
cryption and decryption.

• Utilized functional data pipelines to generate cipher matrices and process string manipula-
tions safely.

High-Performance Image Pipeline (AVIF Generator) | C#, ImageMagick

• Developed a highly optimized C# tool to automatically render, process, and encode over
4,100 high-resolution banners into AVIF format.

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• Implemented efficient data handling and processing pipelines, reducing total execution time
to approximately 18 minutes.

Terminal Roguelike Game | C, ncurses TUKE GitLab

• Developed a terminal-based game handling game loop state, procedural logic, and manual
memory allocation purely in C.

EDUCATION
Technical University of Košice (TUKE) Košice, Slovakia
Bachelor of Applied Informatics (FEI) 2025 – Present

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