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Oleh Silvestrov Ukraine
[open contact info](look above in the "contact info" section)
t.me/Silvedko
Senior Unity Developer [open contact info](look above in the "contact info" section)

Profile
Senior Unity Developer with 10+ years of commercial experience across
multiplayer, mobile, WebGL and VR projects. Specializes in client-server
and ECS-based game architecture, network synchronization and
performance optimization. Experienced in developing LiveOps features for
live mobile games. Uses modern AI-engineering tools and practices in
day-to-day development and keeps up with new solutions in the field.

Experience
Feb 2025 — May 2026 Senior Unity Developer, Whimsy Games
Undeads: free-to-play PvP/PvE top-down shooter, released on Steam in
Dec 2025. 5 Unity developers in a team of ~20.

Co-designed from scratch and implemented a hybrid ECS architecture
shared by the game server and client.
Built entity state synchronization on custom binary packets with zero-
allocation serialization, supporting up to 30 players, 240 active zombies
and ~400 static NPCs per match.
Implemented client-side prediction with server reconciliation for
movement and shooting.
Brought the client to 60 FPS on the large game map through LOD,
batching, lightmap rebaking and object pooling.
Worked across server and client code; reviewed code, planned and
estimated large features.

Sep 2023 — Nov 2024 Senior Unity Developer, SuperPlay
Dice Dreams: casual social mobile game (iOS, Android). Feature team of 3
developers and a lead.

Delivered LiveOps features end to end in a feature team: seasonal events
with progression, battle pass, collections and albums.
Implemented tournaments, including team tournaments: leaderboards,
player grouping and reward distribution.
Built features on Zenject and UniTask, with event content loaded via
Addressables and configured from the server.
Rolled features out through A/B tests; took part in code review.

Oleh Silvestrov, Senior Unity Developer 1/3

Oct 2021 — Jun 2023 Senior Unity Developer, Whimsy Games
Undeads (early MMORPG version): built the server architecture on Mirror
and optimized client-server communication.
Two WebGL card games: developed thin-client core gameplay and UI; for
the card battler, added MetaMask wallet connection and NFT card
auctions running on testnet tokens. Built a custom wrapper that emulates
browser JavaScript and wallet calls inside the Unity Editor, so WebGL
features can be tested without a WebGL build.
Mobile match-3 game: implemented QR-code scanning in physical retail
stores that grants in-game bonuses.

Jul 2019 — Aug 2021 Unity Developer, Whaleapp
Resort Hotel: Bay Story (match-3) and Hunter: Master of Arrows (action):
mobile games for iOS and Android.
Implemented core match-3 features, tournament mechanics and LiveOps
events driven by server-side configs.
Integrated in-app purchases, ads and push notifications.
Maintained and refactored the existing codebase; fixed production bugs.

Apr 2018 — May 2019 Unity Developer, Ameria
Built Kinect-based games and apps for Ameria's interactive stations,
internal Editor tools and peer-to-peer networking.

Jan 2017 — Nov 2017 Unity Developer, Timecode
Developed a multiplayer VR shooter for Samsung Gear VR on Photon PUN,
with up to 8 players per session.

Oct 2015 — Oct 2016 Unity Developer, DAXX
Contributed to the development of ABCmouse, an educational app for
children aged 2–8, for US ed-tech company Age of Learning.

Sep 2013 — Sep 2014 Unity Developer, Room 8 Studio
Mobile escape-room puzzle games (iOS, Android) with up to 1M+ downloads
on Google Play: Escape Quest, Can You Escape: Hollywood, Horror Escape.
Integrated static and video ads, in-app purchases with purchase restore,
and analytics; fixed bugs.

Education
2007 — 2012 Master of Computer Science, Sevastopol National Technical University

Languages
English B2 (Upper-Intermediate)
Ukrainian Native

Oleh Silvestrov, Senior Unity Developer 2/3

Technical skills

C# / .NET Advanced C# (generics, async/await with UniTask, memory-efficient code with
Span<T> and structs), IL2CPP, assembly definitions

Unity Unity 6 engine core (scenes, prefabs, ScriptableObjects, navigation), physics and
vector math, UI (uGUI, TextMeshPro), content delivery (Addressables, Asset
Bundles), Input System, Localization, custom Editor tools

AI tooling Claude Code, Cursor, GitHub Copilot, Unity MCP

Knowledge system Knowledge structure, retrieval and memory architecture: RAG, vector search,
engineering knowledge graphs, agent memory files

Agentic engineering Multi-agent workflows, subagents, parallel agents on separate tasks (git
worktrees); spec-driven and plan-first development; AI code review; context
engineering, prompt engineering

Architecture Hybrid ECS, Clean Architecture, DI (Zenject, VContainer), parallel and
multithreaded solutions, FSM / Behaviour Trees

Networking TCP/UDP, LiteNetLib, Mirror, Photon PUN; client prediction and server
reconciliation, lag compensation, interest management, custom binary
state sync

Serialization Zero-allocation (Span<T>, bit-packing), MemoryPack, MessagePack

Backend Client-server API integration: REST, WebSocket, SignalR, BestHTTP;
JWT / OAuth authentication

Optimization Unity Profiler, Memory Profiler, Frame Debugger; CPU, GC and memory
optimization; draw calls, batching, LOD, occlusion culling, lightmapping; object
pooling; build size reduction

Animation & VFX Animator (Mecanim), Spine, DOTween, Particle System

Mobile Unity IAP, ads mediation (AdMob, AppLovin MAX, LevelPlay), push notifications,
native Android/iOS plugins, Android and iOS builds (Gradle, Xcode, TestFlight)

LiveOps Server-driven configs, Firebase Remote Config, A/B testing; analytics with
Firebase and AppsFlyer; Facebook SDK

DevOps Git, Docker, CI/CD (GitHub Actions, Jenkins, TeamCity)

WebGL & Web3 WebGL build optimization, MetaMask wallet integration, NFT

XR Gear VR, OpenXR, XR Interaction Toolkit, AR Foundation, Kinect

Platforms PC (Steam), iOS, Android, WebGL, VR

Oleh Silvestrov, Senior Unity Developer 3/3