Looking for a job

Javier Martinez Valle

@javiermartinezvalle

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I build polished Unity gameplay and reliable multiplayer experiences for mobile and PC players.

Spain

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What I'm looking for

I'm looking for remote Unity work where I can build polished gameplay, dependable multiplayer, and practical tools that help design teams iterate faster.

I've spent 10 years shipping Unity games for mobile and PC, with a focus on gameplay feel, clear interfaces, and multiplayer sessions players can trust.

At Global Online Gaming, I led Heroes Lineage, a live multiplayer fantasy RPG with around 10,000 users. I built turn-based authoring tools and helped move the game to an authoritative FishNet server-client setup for steadier live sessions.

At Shadowlock Games, I developed core gameplay for Steel Wars Royale and helped deliver stable 60 FPS on low-end iOS and Android devices. More recently, I shaped Pocket Frens' pet behaviour, moods, saves, and content pipeline at Future Nostalgia Studios.

At Epic Panda Games, I provided technical leadership across more than five casual and hypercasual mobile titles. I build editor tools that let designers tune feel and presentation without waiting on engineering, and I enjoy helping small multidisciplinary teams ship stable builds on real hardware.

Experience

Work history, roles, and key accomplishments

Senior Unity Developer

Epic Panda Games

Jan 2025 - Jan 2026 (1 year)

Technical lead across 5+ casual and hypercasual mobile titles. Built editor tools for design tuning and shipped stable builds on real hardware.

Unity C#Custom Editor Scripting Scriptable Objects Mobile Profiling Performance Optimization

Senior Unity Developer

Future Nostalgia Studios

Jan 2024 - Jan 2025 (1 year)

Provided technical direction on Pocket Frens, a Web to Unity remake of a virtual pet simulator. Developed pet behaviour, moods, and save systems, and built content pipelines for faster feature delivery.

Unity C#State Machines Save Systems Addressables Custom Editor Scripting

Lead Unity Developer

Xaloc Studios

Jan 2023 - Dec 2023 (11 months)

Led an internal multiplayer prototype focused on synced play feel. Compared Photon Fusion and Photon Quantum before choosing a networking stack, and mentored junior developers.

Unity C#Photon Fusion Photon Quantum Multiplayer Gaming Technical Leadership Mentorship

Lead Unity Developer

Global Online Gaming

Jan 2021 - Jan 2023 (2 years)

Lead developer on Heroes Lineage, a live multiplayer fantasy RPG with around 10,000 users. Built turn-based gameplay authoring tools and implemented an authoritative server-client setup with FishNet.

Unity C#Photon Fusion Fishnet Custom Editor Tools Scriptable Objects State Machines Multiplayer Gaming Client Server Architecture

Unity Developer

Shadowlock Games

Jan 2018 - Jan 2021 (3 years)

Developed core gameplay and feel for Steel Wars Royale, a mobile action game. Evolved online play from Photon PUN to Photon Quantum and optimized for stable 60 FPS on low-end devices.

Unity C#Photon PUN Photon Quantum Mobile UGUI REST Backend