Jan Kočur
Jan Kočur

Game & Full-Stack Developer · Prague, Czechia

Jan Kočur

I build games and the backends behind them, with 7 years of experience across Unity mobile clients, Java/Spring and Node.js services on Google Cloud, and Web3 integrations on Sui and EVM chains.

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What I can build for you

Unity games from the first prototype to a live game — the client, the multiplayer backend and the infrastructure it runs on.

  • Unity (C#) gameplay & UI
  • Multiplayer & game backends
  • Live ops, CI/CD, analytics
  • Code reviews & architecture

Seen in

ONE Fight ArenaScratch LordsDomov
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About

I lead the programming team behind ONE Fight Arena, a mobile game for ONE Championship, where I work across the Unity client, the Java backend on Google Cloud and the CI/CD that keeps it running in production.

Alongside games I build TypeScript backends for Qubix Studio — most recently the GraphQL backend and on-chain indexing for Districts, a Web3 real-world land platform.

I hold a Master's degree in Computer Graphics and Game Development from Charles University in Prague.

Featured projects

All projects →
Games2022 – present

ONE Fight Arena

PvP match-3 puzzle fighter for ONE Championship, with 20+ real MMA stars

4.7 ★
Rating
500K+
Downloads
9.85K
Reviews
  • Unity
  • C#
  • Java 21
  • Spring Boot 3
  • Cloud Run
Backend & Web2022 – present

Districts

Web3 real-world land platform on Realio Network

6,114
Districts minted
12,338
Token holders
76M RIO
Market volume
  • TypeScript
  • GraphQL
  • TypeORM
  • PostgreSQL
  • Nx
Games2022 – present

Scratch Lords

Digital collectible card game with 3D hero duels and tradeable NFT cards

iOS · Android
Platforms
CZ & SK 2022
Soft launch
  • Unity
  • C#
  • Java
  • Spring Boot
  • Datastore
Games2019 – 2022

Scratch Wars

Collectible strategy card game played on a phone or on the table with the same cards

2M+
Cards sold
iOS · Android
Platforms
  • Java
  • Google Cloud
  • NoSQL

Experience

  1. Tech Lead & Full-Stack Developer

    Nov 2022 – present

    Notre Game

    Leading development of ONE Fight Arena and Scratch Lords — Unity clients and Java / Spring Boot backends on Google Cloud.

  2. Backend & Full-Stack Developer

    Jan 2022 – present

    Qubix Studio

    TypeScript backends, DevOps and Web3 integrations for Districts, Strapi CMS sites, Piggybank and Hartmann.

  3. Java Backend Developer

    Sep 2019 – Nov 2022

    Notre Game

    Java backend for the Scratch Wars card game on Google Cloud Platform.

  4. QA, Game Tester

    Oct 2017 – Oct 2018

    Bohemia Interactive

    Tested DayZ, Ylands and Arma 3 as part of the QA team.

Skills

Languages
  • C#
  • Java
  • TypeScript
  • JavaScript
  • SQL
  • C++
  • Python
Game dev
  • Unity
  • URP
  • Firebase
Backend & web
  • Spring Boot
  • Node.js
  • NestJS
  • GraphQL
  • Strapi
  • TypeORM
  • Prisma
  • Next.js
  • React
Data & cloud
  • Google Cloud
  • Cloud Run
  • Datastore
  • PostgreSQL
  • MySQL
  • Redis
  • Docker
  • Kubernetes
  • GitHub Actions
Web3
  • Sui
  • Enoki
  • zkLogin
  • EVM
  • wagmi
  • viem

Education

  1. Master's — Computer Graphics and Game Development

    2018 – 2021

    Charles University, Prague

    Thesis: Endless Runner Game with Dynamic Difficulty Adjustment

  2. Bachelor's — Computer Science

    2015 – 2018

    Charles University, Prague

    Thesis: Artificial Player for Dota 2