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Mohamed Essam

@mohamedessam11

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Unity Developer at UMX Studio who shipped LiveOps features for Climbing Sand Dune, a mobile game with 20M+ downloads.

Egypt

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At UMX Studio, I held technical ownership of features for Climbing Sand Dune, a top-grossing mobile game with 20M+ downloads. I built and shipped a multiplayer race mode and social systems with backend and REST integration, increasing daily active users by 13%.

As a freelance Unity Developer, I worked on Nordhold, implementing gameplay mechanics and enhancing UI, and built a bilingual Arabic/English input system with RTL/LTR handling. I also authored Mastering Unity Game Development with C# for Packt Publishing.

Experience

Work history, roles, and key accomplishments

Current

Freelance Unity Developer

Current

Upwork

Aug 2024 - Present (2 years 2 months)

Took ownership of Unity codebases across multiple client projects, integrating REST APIs and handling local storage and offline-first sync. Worked on Nordhold, a roguelike tower defense game on Steam, implementing gameplay mechanics and enhancing UI, and built a custom bilingual input system with RTL/LTR handling.

Unity C#REST APIs Local Storage Offline first Sync TextMeshPro RTL LTR Game Mechanics UI

Senior Unity Developer

UMX Studio

Jan 2022 - Aug 2024 (2 years 7 months)

Held technical ownership of features for Climbing Sand Dune, a top-grossing mobile game with 20M+ downloads, across the full architecture and release pipeline. Built a new multiplayer race mode and social systems, refactored the in-game auction system, and optimized UI performance on low-end Android devices.

Unity C#Object Oriented Programming SOLID LiveOps REST APIs Admob UnityAds IronSource Firebase Analytics Playfab Photon TextMeshPro Git Performance Optimization Profiling UI Optimization Mentorship

Author (part-time)

Packt Publishing

Nov 2023 - Jul 2024 (8 months)

Authored Mastering Unity Game Development with C#, covering professional Unity architecture, OOP/SOLID practices, and clean code standards.

Unity C#Object Oriented Programming SOLID Clean Code Technical Writer

Unity Developer

Macber EG

Jan 2021 - Dec 2021 (11 months)

Designed and implemented game modes for a multiplayer card game (Baloot), including client-server interaction patterns. Built AR/VR experiences and reusable internal tools.

Unity C#Multiplayer Gaming Client Server Architecture AR VR Internal Tools

Freelance Mobile Game Developer

Cairo

Feb 2019 - Dec 2020 (1 year 10 months)

Developed and shipped casual games for Android and iOS, managing the full build and release process. Designed AI enemies using Finite State Machines and built custom editor tools to speed up iteration.

Unity C#Android iOS Finite State Machines Editor Tooling Game Development