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Xavier Apostol
Mid-level Unity/XR Developer specializing in educational VR and accessibility
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Unity/C# developer from an educational live-service product who spent 5 years shipping across desktop, VR, and mobile while building systems spanning localization, multiplayer, AI-driven avatar experiences, and accessibility. Particularly notable for owning a Lokalise-to-Unity I2 localization backend still in use today and helping lead a major Photon PUN to Fusion migration.
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Key Strengths
- end-to-end ownership of localization backend and Unity editor tooling
- cross-platform Unity shipping across desktop, VR, and mobile
- multiplayer networking migration from Photon PUN to Photon Fusion
- LLM-integrated avatar animation workflow using GPT-4 and Langfuse
- strong cross-functional collaboration with design, web, and education teams
- documentation and onboarding process design
- accessibility-minded product prioritization
- live service maintenance and feature delivery over 5 years
- scalable animation system design using emotion tags for 30+ avatars
- careful legacy data migration and key standardization without breaking existing game links
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