Looking for a job

Karl Herlio

@karlherlio

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Game developer at Booming Games who shipped 30+ slot game titles and brings animation and game design to life.

Portugal

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What I'm looking for

I’m looking for new challenges where I can apply my technical expertise and creative side.

At Booming Games, I developed cross-platform HTML5 slot games for online markets, implementing core mechanics, bonus systems, and animation flows across dozens of games. I also used modular architecture to support reusable features and wrote TypeScript unit tests for game logic.

At LudusCristaltec, I developed slot games for physical machines and online markets, with a focus on code-based animation and performance on resource-limited hardware. I also contributed sound design and original music, and co-led the development department during my last year. Alongside game development, I work across audio, music, video, and visual storytelling.

Experience

Work history, roles, and key accomplishments

HTML5 Game Developer

Booming Games

May 2022 - May 2025 (3 years)

Frontend development of cross-platform slot games for online markets, implementing core game mechanics, bonus systems, and animation flows in collaboration with game designers. Applied modular architecture and implemented TypeScript unit tests for game logic.

React TypeScript JavaScript Pixi Spine HTML CSS NodeJS

Game Developer

LudusCristaltec

Jul 2017 - Apr 2022 (4 years 9 months)

Developed slot games for physical electronic machines and online markets, with a focus on code-based animation and optimization for limited hardware. Contributed to game design discussions, sound design, and original music, and co-led the development department during the last year.

Game Development Animation Optimization Sound Design Music composition Mentorship