Expert Unity Game Developer | 10 Years Experience | PC & Mobile
Published 2 of my own Co-op steam games: Trials of wilderness (Open World Survival), The Final Hold (Shooter).
Alongside many other games developed for clients across various platforms.
I created complex multiplayer games featuring rich content with a lot of game systems.
So I can create every type of game from idea to published game.
Experienced working solo or in teams, with high availability for communication both during and outside of working hours.
First game prototype will be created as early as possible.
Game systems will be optimized, scalable, adjustable, with organized assets and scripts.
Making it easy to swap models, art styles and other things if needed.
I created games with Matchmaking and dedicated servers, AntiCheat, Ads, third party services integration (like Playfab)...
Feel free to reach out to discuss your project.
Trials of wilderness not successful because it was my first game, released early in my Career (2018), with bad graphics...
But after a lot of updates, there is various enemies and creatures with different mechanics, Base building, Inventory and Crafting, Taming and feeding animals, Smart AI movement, Dungeons with traps and ghosts, Shop, Raiding and much more, and all that is working multiplayer.
I've modified and updated all these systems over the years so I know how to make the best version.
Mirror and unity NetCode network systems are server authoritative, it's easier to prevent cheating than in pear to peer system.
Mirror contains a lot of different transports: Unity relay /Steam /Epic games... transports can be used, depending on which platform the game is on. If you want to publish a game on steam, you will be able to use the steam servers which are free. But I worked with other network system too.
Android
C#
Unity
Multiplayer
API Integration
Game Mechanics
PC Game
UI Graphics
Artificial Intelligence
AI Development
Online Multiplayer
Sandbox Video Game
First-Person Shooter
Casual Game
Action
Role-Playing Game
Mobile Game
Branislav S.
Novi Sad, Serbia
$20/hr
5.0
1 jobs
I’m an Android Developer with 5+ years of hands-on experience building, launching, and maintaining production-ready apps on the Google Play Store.
I develop native Android applications using Java and Android Studio, handling everything from initial concept to live deployment.
My expertise includes:
• Full Android app development from scratch
• REST API integration and local data storage (SQLite)
• Firebase integration (Crashlytics, Remote Config, Analytics)
• AdMob monetization and Google Play Billing
• Offline functionality and data synchronization
• App optimization and Play Store publishing
I have built complete apps including backend integration, monetization systems, and ongoing maintenance.
Whether you need a new app built from the ground up or a reliable developer to maintain and expand your existing product, I can deliver a stable, scalable Android solution.
Android App Development
Android Studio
Java
SQLite
JSON
XML
Lazar V.
Novi Sad, Serbia
$15/hr
5.0
9 jobs
Game development engines: I've worked in unity, game maker studio, clickteeeam fusion, multimedia fusion developer.
Programming languages and extra: c, c#, java, html, javascript
past experiences: i've worked for international small time developers as a game design consultant and teste in making ..busybee", ..bumblebombee". I've also worked in a small local team making a vr application for an international competition and getting a first place.
Unity
GameMaker
Game Design Document
C#
Game Consultation
Mobile Game
Android
Game Testing
Game Development Bug Fix
Game Development
PC Game
Game Design
Mobile App Development
Ljubisa A.
Novi Sad, Serbia
$30/hr
5.0
3 jobs
-Knowledge and experience in C, C++ and script languages. Familiar with game development as well as game engine development.
-Most of work done in Cocos creator and Unity (and few custom engines).
-Likes working on code optimization and code readability.
-Interested in working and familiar with Game testing as well.
-Good at working alone as well as working in small to large teams with different backgrounds.
-Familiar with software development in auto industry (misra, autosar, testing).
-Strong communication skills and knowledge of English language.
-Loves problem solving and learning new things.
C++
C
C#
Cocos2d
TypeScript
Game Testing
Bug Fix
Code Refactoring
Scripting
Game Development
Uros M.
Sombor, Serbia
$20/hr
4.9
15 jobs
Uroš Marković
Recent IT Graduate | Full-Stack Software Engineer
Node.js • PostgreSQL • Docker • React • TypeScript
Serbia, Europe
- About Me
I am a recent Information Technologies graduate from the Faculty of Sciences, University of Novi Sad, with hands-on experience building and maintaining a complete production web platform from scratch.
For the past 7 months, I have been developing "StreamAF", where I am responsible for the platform across the full engineering stack: frontend, backend, database, infrastructure, deployment, testing, security, integrations, analytics, and ongoing production support.
I am comfortable taking a feature from an initial business requirement through architecture, implementation, testing, deployment, and maintenance rather than working only within one isolated part of a codebase.
My strongest area today is modern web development with TypeScript, Node.js, React and PostgreSQL, supported by Docker-based infrastructure and automated testing.
I also make extensive use of modern AI-assisted engineering workflows and prompt engineering for architecture exploration, implementation, debugging, refactoring, testing, documentation, and code review, while maintaining direct understanding and ownership of the systems being developed.
My earlier background includes C#, C++, Unity, PHP, Python, algorithms, data structures, and competitive programming.
- Professional Experience
Full-Stack Software Engineer — StreamAF
2026 – Present
Built and continue to develop a production web platform from the ground up.
My responsibilities span the complete software lifecycle, including:
* Designing and implementing the frontend architecture and user interfaces.
* Building REST APIs, backend services, authentication, validation, and business logic.
* Designing and maintaining the PostgreSQL database and migrations.
* Developing admin, streamer, and master-affiliate dashboards.
* Implementing affiliate attribution, click tracking, postback systems, and reporting functionality.
* Building XLSX import/export workflows, QR-code functionality, file uploads, and email systems.
* Managing Dockerized development and production environments.
* Configuring reverse proxies, HTTPS certificates, networking, and infrastructure.
* Implementing security measures including rate limiting, HTTP security headers, Cloudflare Turnstile, and CrowdSec.
* Maintaining automated database backups, logging, and production services.
* Building automated unit, integration, and end-to-end test coverage.
* Managing repositories, releases, deployments, and production troubleshooting.
* Translating business requirements into technical architecture and production features.
* Providing technical guidance and supporting partner/brand onboarding.
- Main Technology Stack
Backend:
Node.js, TypeScript, Express.js, PostgreSQL, Drizzle ORM, JWT, bcrypt, Zod, Nodemailer, MJML, Multer
Frontend:
React, TypeScript, Vite, Tailwind CSS, shadcn/ui, Radix UI, React Router, TanStack Query, React Hook Form, Zod, Recharts
Infrastructure & DevOps:
Docker, Docker Compose, Nginx, Traefik, Let's Encrypt, CrowdSec, Cloudflare, PostgreSQL backups, logrotate, pnpm, Linux
Testing & Code Quality:
Vitest, Playwright, Testing Library, Supertest, Testcontainers, ESLint, TypeScript strict mode
Integrations & Product Features:
Affiliate/postback tracking, analytics dashboards, XLSX import/export, email systems, file uploads, QR codes, Cloudflare Turnstile
AI-Assisted Engineering:
LLM-assisted development, prompt engineering, architecture exploration, rapid prototyping, debugging, refactoring, automated test generation, documentation, and code review workflows
- Education
University of Novi Sad — Faculty of Sciences
Bachelor's Degree in Information Technologies
2022–2026
Department of Mathematics and Informatics
Graduated in 2026. Planning to continue my education with a Master's degree in Information Technologies / Computer Science.
Grammar School
Specialized Program for Students with Advanced Abilities in Mathematics and Programming
2018–2022
Awards & Scholarships
* Selected in 2026 as one of 1,111 students in Serbia to receive a national scholarship for outstanding final-year university students.
* Recipient of a Government of Serbia student scholarship for three consecutive years during undergraduate studies.
Additional Education
UEFN - Creator Launcher - Epic Games / Materriya / 3Lateral / Serbian Games Association
March - July 2025
UEFN Fellowship — Epic Games / Materriya / 3Lateral
November 2023
FCF Fellowship — Epic Games / Materriya / 3Lateral
September 2023
Languages
Serbian: Native
English: Fluent
Java
Game Development
C#
Unity
Software Development
MySQL
Desktop Application
.NET Core
Android
Android Studio
Unreal Engine
Fortnite
Marko R.
Belgrade, Serbia
$55/hr
5.0
21 jobs
For over 14 years I've worked on a variety of projects, ranging from
micro-sites, games, web applications, raising a successful video platform from scratch, to founding my own creative studio.
Founder and Director of REESTACK Agency, freelance company, developing games, creatives and apps.
COO at TRIA, specilizing in creative development for mobile games market. Including Playable and Video Ads.
Discovering new technologies, experimentation and prototyping is
my passion.
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