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Krzysztof Niewolewski

Tech Lead · Game / Mobile Apps Developer

  • Szczecin, Poland
  • kniewolewski@gmail.com
  • kniewolewski.com
  • linkedin.com/in/krzysztof-niewolewski

Profile

Game and mobile apps developer with 19 years of experience and 60+ shipped titles. Currently Tech Lead at Exon Studio — Unity 3D casual mobile games, AI stack & workflow with Claude / GPT / Agents, full DevOps ownership. Previously a decade at Game Factory shipping for Wooga, Disney, Miniclip, Candystand and Egmont.

Experience

Tech Lead · Game Developer

Jun 2021 — Present

Exon Studio / DNA Mobile · Szczecin, Poland

  • Lead tech for casual mobile games on Unity 3D.
  • Design AI stack & workflow — Claude / GPT / Agents / MCP in pipeline.
  • DevOps: CI/CD, build automation, release pipelines.
  • Profiling & performance optimization — Unity Profiler, memory/GC, draw calls, frame-budget tuning for low-end devices.
  • Mentor team, set technical direction, code review.
  • 8+ shipped titles plus DNA Mobile Group publishing partnership: Solitaire — Classic Card Game (5M+ downloads, 4.8★), Block Blaster, Solitaire Klondike, Tile Oasis, Blocku, Screw and Bolt, Clear Block, Hex Go Sort, Picture Match, Color Bus Jam.

Senior Game Developer

Dec 2010 — May 2021

Game Factory

  • Built Unity 3D + C# games end-to-end from prototype to deployment.
  • Multiplayer backends via Smartfox (Java) — full stack server & client.
  • Facebook / mobile AS3 titles, PHP backends.
  • Client estimations, meetings, production support.
  • 30+ shipped titles for clients including Wooga, Disney, Miniclip, Candystand, Egmont.

Java Developer · Technical QA · QA Engineer

Aug 2007 — Jun 2010

Gamelion (now Huuuge)

  • Java mobile games & J2ME ports across all mobile platforms.
  • Test frameworks in Java; dev tools and benchmarks in Python.
  • Code review tooling; manual test case authoring.

Education

Master of Science, Information Technology

2004 — 2010

West Pomeranian University of Technology, Szczecin

Computer Science, Networks and Mobile Technologies. Thesis: Face recognition systems for mobile devices.

Certificates

  • CS188.1x: Artificial Intelligence — UC Berkeley (May 2013)
  • Design Patterns — efficient code reusability — Warsaw (May 2010)

Selected Portfolio

Solitaire — Classic Card Game (5M+), Diamond Dash (Wooga), Candy Croc, Mia and Me — Centopia, Mighty Smighties, Znaj Znak, Zoom Blocks, Perfect Pool, Mini Pets (Miniclip), Towers of Mystoria, Full Bloom, Cosmo Blast, Owoce Play, Magnificent Gardens, 52 Card Pickup, Find It! — Sleuth Edition, Kings In The Corner, Sunken Treasures, My Little Pony Activities, Block Blaster, Tile Oasis, Blocku, Screw and Bolt, Clear Block, Hex Go Sort, Picture Match, Color Bus Jam.

Engines

  • Unity 3D
  • Smartfox
  • Cocos Creator
  • Pixi.js
  • Phaser 3
  • Three.js
  • Babylon.js
  • Unity Profiler
  • Performance Optimization
  • Node.js

Languages

  • C#
  • Java
  • TypeScript
  • JavaScript
  • Python
  • PHP
  • ActionScript

AI Stack

  • Claude
  • GPT
  • AI Agents
  • MCP
  • Prompt Eng.
  • Cursor

DevOps

  • Git / SVN
  • GitHub Actions
  • Bitrise
  • TeamCity
  • CI/CD
  • Docker
  • n8n

Live-Ops

  • AdMob
  • IronSource
  • AppLovin MAX
  • Unity Ads
  • Play Billing
  • StoreKit
  • Firebase
  • Remote Config
  • GameAnalytics
  • AppsFlyer
  • Adjust
  • Kochava
  • ASO
  • Metica
  • Nefta
  • Advanced Ads Handling

Animation · Localization

  • Spine
  • DragonBones
  • TexturePacker
  • i18n Workflow
  • Multi-font (EN/PL/JP/RU…)

Languages spoken

  • Polish — native
  • English — fluent

Highlights

  • 60+ shipped titles
  • 19 years in games
  • 5M+ downloads on Solitaire
  • 4.8★ avg Play Store
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