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I'm a Senior Software Engineer with 12+ years of experience focused on Unity-based architecture, multiplayer systems, and cloud-integrated game backends. I've designed and deployed production-ready server architectures for mobile real-time games, built scalable REST APIs, and integrated PlayFab for LiveOps across multiple titles. I thrive on building maintainable, high-performance systems with a focus on stability and long-term growth. I enjoy optimizing performance on wide-ranging devices and delivering production-grade solutions rather than prototypes, with a proactive stance on cloud deployment and live operations.…I'm a Senior Software Engineer with 12+ years of experience focused on Unity-based architecture, multiplayer systems, and cloud-integrated game backends. I've designed and deployed production-ready server architectures for mobile real-time games, built scalable REST APIs, and integrated PlayFab for LiveOps across multiple titles. I thrive on building maintainable, high-performance systems with a focus on stability and long-term growth. I enjoy optimizing performance on wide-ranging devices and delivering production-grade solutions rather than prototypes, with a proactive stance on cloud deployment and live operations.

SeyedHossein Rouholamini

Game Developer, Full Stack Developer, Back-End Developer, +2

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I'm a Senior Software Engineer with 12+ years of experience focused on Unity-based architecture, multiplayer systems, and cloud-integrated game backends. I've designed and deployed production-ready server architectures for mobile real-time games, built scalable REST APIs, and integrated PlayFab for LiveOps across multiple titles. I thrive on building maintainable, high-performance systems with a focus on stability and long-term growth. I enjoy optimizing performance on wide-ranging devices and delivering production-grade solutions rather than prototypes, with a proactive stance on cloud deployment and live operations.…I'm a Senior Software Engineer with 12+ years of experience focused on Unity-based architecture, multiplayer systems, and cloud-integrated game backends. I've designed and deployed production-ready server architectures for mobile real-time games, built scalable REST APIs, and integrated PlayFab for LiveOps across multiple titles. I thrive on building maintainable, high-performance systems with a focus on stability and long-term growth. I enjoy optimizing performance on wide-ranging devices and delivering production-grade solutions rather than prototypes, with a proactive stance on cloud deployment and live operations.

Available to hire

I’m a Senior Software Engineer with 12+ years of experience focused on Unity-based architecture, multiplayer systems, and cloud-integrated game backends. I’ve designed and deployed production-ready server architectures for mobile real-time games, built scalable REST APIs, and integrated PlayFab for LiveOps across multiple titles.

I thrive on building maintainable, high-performance systems with a focus on stability and long-term growth. I enjoy optimizing performance on wide-ranging devices and delivering production-grade solutions rather than prototypes, with a proactive stance on cloud deployment and live operations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Advanced

Turkish

Fluent

Persian

Fluent

Work Experience

Freelance Software Engineer - Unity Multiplayer Backend at Upwork (Freelancer)

February 1, 2016 - Present

Designed and deployed multiplayer server architecture for mobile real-time games; Built scalable REST APIs using FastAPI and .NET for Unity integration; Integrated and customized PlayFab backend systems for production titles; Implemented cloud-based LiveOps features using AWS and Azure; Diagnosed and stabilized failing Unity multiplayer systems; Delivered 20+ production applications including multiplayer mobile games and VR systems; Key impacts include reduced desync incidents by 70%, improved mobile FPS stability, and migration to scalable cloud infrastructure.

Senior Unity Multiplayer Engineer at Independent Game Project — Dark Shooter

January 1, 2025 - Present

Designed and developed a production-ready real-time multiplayer mobile game with complete client-server architecture and backend infrastructure. Architected Unity client systems optimized for performance across low-end and mid-range Android devices. Implemented authoritative multiplayer game server using Node.js. Built backend REST API services using FastAPI for player data, matchmaking, and session management. Engineered low-latency real-time networking systems for responsive multiplayer gameplay. Optimized CPU, memory, and rendering performance to ensure broad device compatibility. Designed scalable backend architecture suitable for LiveOps and future expansion. Managed server deployment, monitoring, and production stability.