Ivan

Ivan Teslenko
C# Unity Engineer
7 years of experience in Game Development

Covering the full production cycle from prototyping to release and LiveOps support.
Experienced with mobile, PC and console platforms, including PS5, Nintendo Switch and
Xbox. Proficient in Unity, C#, OOP, SOLID, design patterns, optimization and debugging.
Skilled in gameplay systems, client-server interaction, platform-specific integrations and
performance optimization. Experienced with PlayFab, Unity Weld, Photon Bolt, EOS and
console SDK workflows. Strong engineering mindset with solid experience in technical
discussions, code reviews, task estimation and cross-discipline collaboration.

SKILLS

Programming Languages C#, Python, Dart

Core Technologies Unity, OOP, SOLID

Additional Technologies Zenject, VContainer, Addressables, Photon (Bolt), UniTask, Unity Weld, PlayFab, Firebase,
GitLab CI

Operating Systems Android, IOS, PS5, Xbox, Nintendo Switch, Windows, MacOS

Languages English, Ukrainian

EDUCATION

2024 – 2026 Master's degree in Computer Science
Ukrainian State University of Science and Technologies (USUCT)

2017 – 2021 Bachelor's degree in Micro- and Nanosystem Technics
Oles Honchar Dnipro National University
 PROFESSIONAL EXPERIENCE

Pushka Studios Project description:
September 2025 – Spell Brigade
Present
Online co-op survivor game

Responsibility:
• Ported and adapted Unity project for PS5 and Xbox.
• Integrated and debugged EOS (authentication, lobbies, invites, P2P, reconnect).
• Implemented platform specific services (trophies, activities, save data, invites, sessions).
• Fixed issues related to UI navigation, unsupported Unity APIs, initialization order and
certification requirements.
• Optimized console runtime performance by profiling logs, isolating bottlenecks and resolving
audio-related freezes.

Technologies:
Unity, C#, PS5 SDK, Xbox GDK, EOS, Netcode Unity, FMOD

Links:
https://store.steampowered.com/app/2904000/The_Spell_Brigade/

Pushka Studios Project description:
August 2025 – I Am Future: Cozy Apocalypse Survival
November 2025
Survival / sandbox game

Responsibility:
• Ported and adapted Unity project for Nintendo Switch.
• Developed and optimized a custom save system to reduce memory usage.
• Refactored existing save/load flow to avoid excessive memory allocations during serialization
and deserialization.
• Fixed and improved object pooling systems to reduce runtime allocations and memory
pressure.
• Investigated and resolved gameplay freezes caused by inefficient resource usage.

Technologies:
Unity, C#, Zenject, UniTask, Nintendo SDK, FMOD

Links:
https://store.steampowered.com/app/1658040/I_Am_Future_Cozy_Apocalypse_Survival/

Room8Group Project description:
March 2025 – [NDA]
August 2025
Educational casual mobile game

Responsibility:
• Redesigned the architecture of a legacy codebase to improve modularity and scalability.
• Refactored existing systems and implemented new gameplay features.
• Developed and maintained UI components in line with updated UX/UI design standards.
• Adding new functionality from scratch.
• Ensured code quality and feature reliability using dependency injection and asynchronous
patterns.

Technologies:
Unity, C#, Zenject, UniTask, GitLab CI, Spine
Room8Group Project description:
September 2024 - WAGMI Defense
March 2025
Mobile real time strategy with NFT

Responsibility:
• Refactored and maintained legacy codebase to ensure code quality and scalability.
• Developed and updated user interface components to improve UX.
• Integrated and expanded meta-gameplay features (e.g., progression systems, daily rewards,
etc.).
• Collaborated with other team members to ensure smooth feature delivery and technical
consistency.

Technologies:
Unity, C#, VContainer, UniTask, Firebase, GitLab CI

Links:
https://play.google.com/store/apps/details?id=com.wagmigame&hl=en

Room8Group Project description:
August 2021 - Redline Royale / Redline Fury
September 2024
Racing with Battle Royale for mobile

Responsibility:
• Designed and implemented core gameplay logic and game architecture.
• Refactored code to improve maintainability and performance.
• Developed client-side analytics logic integrated with Firebase and PlayFab.
• Implemented dynamic and responsive UI systems.
• Developed multiplayer functionality via Photon.

Technologies:
Unity, C#, PlayFab, Firebase, GitLab CI, Photon (Bolt)

Links:
https://store.steampowered.com/app/2912120/Redline_Royale/
https://play.google.com/store/apps/details?id=com.qt.np.redlineroyale&hl=en

Soroban Ukraine Unity Developer
January 2020 –
August 2021
Project description:
SoroboomAR

Educational casual mobile game

Responsibility:
Unity 3D development (designing and developing solution for apps and games). PC/Android/IOS
application development. Performing troubleshooting and support. Implementing Virtual Reality (VR)
app. Implementing client-server interaction.

Technologies:
Unity, C#, Firebase

Links:
https://apps.apple.com/ua/app/soroboomar/id1494135858
Soroban Ukraine Project description:
January 2020 – Worlds of Soroban
August 2021
Puzzle and platformer game for mobile.

Responsibility:
• Developed the game from scratch, including full implementation of core 3D platformer
mechanics.
• Created and integrated gameplay systems such as movement, puzzles, and interactive
environments.
• Implemented analytics tracking using Firebase to monitor player behavior and performance.
• Integrated client-server communication features and ensured proper data exchange with the
backend.
• Set up and fine-tuned animations, level layouts, and environment logic for multiple game
levels.

Technologies:
Unity, C#, Firebase

Links:
https://apps.apple.com/ua/app/worlds-of-soroban/id1513788790

Freelance Unity Developer
July 2019 –
January 2020
Project description:
2d platformers games; Casual games.