Jakov Duzevic, Developer in Zagreb, Croatia
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Jakov Duzevic

Verified Expert  in Engineering

Software Developer

Zagreb, Croatia
Toptal Member Since
September 22, 2014

Jakov is a Unity developer with ten years of experience. He specializes in Unity development for small teams and startups, ranging from game design, solution architecture, data management, and users' interface to editor tools. He favors the JetBrains' tools for development and continuous integration tools. Jakov holds a Master's Degree in Computer science, too.


JetBrains Rider, Visual Studio, Unity, Game Development, C#, User Interface (UI)
Freelance (via Toptal)
Unity3D, Game Development, C#, User Interface (UI), Mobile Development
Gold Town Games
Unity, Android, Performance Optimization, Mobile UI, Mobile Game UX...




Preferred Environment

Windows, Desktop, Unity Cloud Build, JetBrains Rider, Unity

The most amazing...

...project I've developed is the comprehensive solution for a hockey manager game.

Work Experience

Founder / Game Developer

2015 - PRESENT
  • Founded a company for mobile game development.
  • Worked on a long lasting development of a hockey manager game.
  • Started as a front-end developer.
  • Moved into improving the back-end.
  • Became a lead solution architect.
Technologies: JetBrains Rider, Visual Studio, Unity, Game Development, C#, User Interface (UI)

Unity Game Developer

2013 - PRESENT
Freelance (via Toptal)
  • Built social integration with Facebook for iOS and Windows mobile games.
  • Created a Microsoft Azure back-end service with PubNub networking.
  • Set up a GitHub and Unity Cloud Build continuous integration system.
  • Managed service workloads with Azure Webjobs.
  • Built a dynamic UI menu system in-game using new Unity UI components.
Technologies: Unity3D, Game Development, C#, User Interface (UI), Mobile Development

Performance Analytics and Optimization Specialist / Game Developer

2023 - 2023
Gold Town Games
  • Analyzed performance bottlenecks on Android and iOS games for CPU and GPU load. This reduced battery consumption and improved user experience.
  • Presented issues and best practices to the team to avoid performance issues and changed existing prefabs and workflow.
  • Debugged using Memory Profiler, CPU, and GPU Profiler on standalone and a few Android devices.
Technologies: Unity, Android, Performance Optimization, Mobile UI, Mobile Game UX, Mobile Development

Lead Game Developer

2016 - 2022
R&P Games Sweden AB
  • Refactored backed data management using SQLite to Unity's serialized objects.
  • Implemented and redesigned the user interface from Invision design to Unity UI with TextMesh Pro fonts. Provided feedback to the design team and controlled the consistency of the design principles.
  • Designed and implemented back-end solution of systems that process data in hockey manager gameplay with visual editor tools that enable projects owners and development teams to better understand and debug the flow of events.
  • Optimized the performance of data repositories and system processing to significantly improve CPU usage and responsiveness of the game.
Technologies: Unity, Unity Cloud Build, Trello, JetBrains Rider, Android, Scraping, Game Development, C#, User Interface (UI), API Integration, Plugins

Lead Developer

2013 - 2015
  • Led the development of an indie game project for mobile platforms.
  • Contributed the full range of programming tasks: vehicle physics, game state machine, editor tools, UI, client and server side communication, database storage, sound engine, modular track construction, etc.
Technologies: Azure, Visual Studio, Unity, Game Development, C#

Game Developer and Technology Adviser

2012 - 2013
  • Worked on various small projects as a programmer and technical adviser.
  • Created games and applications with various input devices like Kinect, Sphero, and Leap Motion.
  • Created game builds for mobile and desktop platforms.
Technologies: Azure, Visual Studio, Unity, C#, iOS

Unity Developer

2011 - 2012
  • Implemented a system for ads in a 3D retail shop environment.
  • Created a prototype application for a scanner with Kinect and SLR camera that created 3D models with hi-res textures.
  • Created a point cloud processing module and embedded it into a product scanning procedure.
Technologies: Microsoft SQL Server, Visual Studio, Unity, Game Development, C#, User Interface (UI)

Hockey Manager

Front-end and back-end developer on a hockey manager game project for desktop.


Virtual retail store in a 3D environment with real product models.

Adrenaline Racing

Racing game for the App Store.

Fantasy Junction

Visualization of coin collection simulation in web browser built with Unity3D using WebGL.

Runner Runner Poker

This was a project for an iOS poker game prototype with unique touch-gestures. We've built an cloud service driven game using Microsoft Azure and PubNub neworking. We've built a game with Unity and integrated Facebook login, friends lists and In-App purchases.
2004 - 2011

Master's Degree in Computer Engineering

University of Zagreb Faculty of Electrical Engineering and Computing - Zagreb, Croatia

APRIL 2017 - APRIL 2019

Unity Certified Developer

Unity Technologies


Slack, GitHub, Adobe Photoshop, Visual Studio, JetBrains Rider, Trello


Unity, Unity3D, Unity Pro, Selenium, Microsoft Kinect




Android, Windows, Desktop, Azure, iOS


Object-oriented Design (OOD), Mobile Development


Unity Cloud Build, Microsoft SQL Server


Algorithms, Leap Motion, Web Development, POS, Game Development, User Interface (UI), Scraping, API Integration, Plugins, Performance Optimization, Mobile UI, Mobile Game UX, Mobile Games

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