Hadi Sajjadi

Summary

For the past 7 years I've built games across a wide range, starting with 3D racing titles, then moving into hypercasual and hybrid casual games that were made in just a few days, and later into free-to-play multiplayer live games that reached 5 million monthly users. That experience taught me when to move fast and when to write code that can survive years of updates. I work in Unity for most native projects and use Unity Playworks, Cocos Creator, or Pixi.js when targeting WebGL. I also lead teams of up to 7 developers and mentor junior programmers.

Experience

Karizma Game Studio

Senior Game Developer · Turkey

Jun 2024 – Present

• Shipped 4 live service multiplayer games from early builds through years of updates, with a combined 20M+ installs.
• Built pipelines for backend services and live ops content so the team could push updates smoothly.
• Led teams of developers and mentored interns and junior programmers on their daily work.

Inex Game Studio

Game Developer · Turkey

Jun 2022 – Jun 2023

• Built 1 or 2 playable hypercasual prototypes every week to test new ideas and market potential.
• Automated the build pipeline so testers got new builds in minutes instead of manually waiting around.
• Developed hybrid casual games for external publishers based on their specific design requirements.

Unbound Game Studio

Game Developer · Turkey

Jan 2022 – May 2022

• Built hypercasual prototypes quickly to find the mechanics that players actually enjoyed.
• Maintained older live games by fixing bugs, adding content, and keeping performance stable.
• Worked on the studio framework that every other developer used to start new projects.

Artman Game Studio

Game Developer · Turkey

Jun 2017 – Nov 2019

• Wrote vehicle physics and AI systems that controlled how cars drove and how opponents raced.
• Optimized both CPU and GPU to keep the game running at 30 fps on phones with only 1GB of RAM.
• Built real-time online multiplayer that kept competitive races smooth and responsive.