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I am a Unity Developer and Backend Engineer specializing in multiplayer games and scalable architectures. I have a track record delivering production-ready gameplay and backend solutions that support 50k+ concurrent users across mobile, WebGL, and desktop. My experience spans persistence, monetization, and cost-efficient server design. I enjoy turning complex systems into reliable, scalable experiences and collaborating with cross-functional teams to ship polished features.…I am a Unity Developer and Backend Engineer specializing in multiplayer games and scalable architectures. I have a track record delivering production-ready gameplay and backend solutions that support 50k+ concurrent users across mobile, WebGL, and desktop. My experience spans persistence, monetization, and cost-efficient server design. I enjoy turning complex systems into reliable, scalable experiences and collaborating with cross-functional teams to ship polished features.

Nenad Nikolic

Game Developer, Back-End Developer, Full Stack Developer, +4

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I am a Unity Developer and Backend Engineer specializing in multiplayer games and scalable architectures. I have a track record delivering production-ready gameplay and backend solutions that support 50k+ concurrent users across mobile, WebGL, and desktop. My experience spans persistence, monetization, and cost-efficient server design. I enjoy turning complex systems into reliable, scalable experiences and collaborating with cross-functional teams to ship polished features.…I am a Unity Developer and Backend Engineer specializing in multiplayer games and scalable architectures. I have a track record delivering production-ready gameplay and backend solutions that support 50k+ concurrent users across mobile, WebGL, and desktop. My experience spans persistence, monetization, and cost-efficient server design. I enjoy turning complex systems into reliable, scalable experiences and collaborating with cross-functional teams to ship polished features.

Available to hire

I am a Unity Developer and Backend Engineer specializing in multiplayer games and scalable architectures. I have a track record delivering production-ready gameplay and backend solutions that support 50k+ concurrent users across mobile, WebGL, and desktop.

My experience spans persistence, monetization, and cost-efficient server design. I enjoy turning complex systems into reliable, scalable experiences and collaborating with cross-functional teams to ship polished features.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Senior Backend Engineer at 6th Base

February 1, 2025 - February 1, 2026

Designed and implemented backend integrations for progression systems, business logic, and data persistence using TypeScript (Node.js), Redis, and MongoDB. Built real-time socket/Redis messaging for high concurrency. Optimized server infrastructure for cost efficiency and reliability across mobile, web, and desktop platforms.

Senior Unity / Typescript Developer at 6th Base Games

February 1, 2025 - February 1, 2026

Built core systems for a 2D space exploration game (combat, upgrades, creature collection). Engineered backend integrations for progression systems, combat logic, and player data persistence. Delivered Unity gameplay features and UI/UX improvements for release readiness.

Senior Backend Engineer at 6th Base

September 1, 2022 - February 1, 2025

Built and maintained distributed server architecture using Java with MySQL persistence. Implemented WebSocket connections to support scalable real-time communication and high concurrency features. Delivered backend architecture supporting 50k+ concurrent users with cost efficient infrastructure. Set up CI/CD pipelines for Cloud Build, automated deployment to Linux servers, and distribution via website download links. Integrated external platforms for authentication, currency handling, and in-app purchases, alongside internal currency systems.

Senior Unity / Java Developer at 6th Base Games

September 1, 2022 - February 1, 2025

Led development of a Unity collectible card game built on the Faeria (Steam game) codebase, extending it with visual novel features, event systems, and tournament logic. Delivered scalable architecture and gameplay systems that supported 50k users, integrated IAP on multiple stores.

Backend Developer at Fruss Ag

May 1, 2022 - May 1, 2023

Contributed to real-time collaboration platform with chat, streaming, and AI assistants.

Independent Backend Developer at Upwork

May 1, 2022 - May 1, 2024

Secured repeat contracts by shipping 10+ projects

Unity Developer at Fruss AG

May 1, 2022 - May 1, 2023

Contributed to Pax.world, a funded WebGL/mobile metaverse platform. Implemented chat, streaming, and interactive virtual spaces, delivering AI-driven assistants and performance optimizations that enhanced engagement and cross-platform experience.

Independent Unity Consultant at Upwork (Top Rated)

May 1, 2022 - May 1, 2024

Secured repeat contracts by shipping 10+ projects with cross-platform backend integrations.

Independent Game Developer

January 1, 2021 - December 1, 2021

Published solo mobile game (5k+ downloads) with ads/IAP monetization.

Food Technologist & Team Lead

October 1, 2011 - May 1, 2022

Led 20+ person teams in regulated production environments. Completed freelance projects in web automation and data processing, gaining early consulting and client management experience.

Food Technologist & Team Lead at Various regulated production environments

October 1, 2011 - May 1, 2022

Led 20+ person teams in regulated production environments; completed freelance projects in web automation and data processing, gaining early consulting and client management experience.