# Henry Allen

> Full Stack Software Engineer

Location: United States, United States
Profile: https://flows.cv/henryallen

Full Stack Software engineer at Higharc, previously at Roblox and Rebecker Specialties. 

At Rebecker, I built data-intensive applications for XR, focusing on client-side rendering and data processing. While at Roblox, I focused on building frontend libraries and frameworks, developer tooling, and UI libraries.

I primarily work with frontend technologies (TypeScript, React, HTML/CSS, GraphQL), but I have gained extensive graphics programming experience while building 3D applications in C++, JavaScript, and Lua at both Roblox and Rebecker Specialties.

Outside of work, I enjoy playing guitar, reading, and playing soccer.

## Work Experience
### Software Engineer @ Higharc
Jan 2025 – Present

### Senior Software Engineer @ Rebecker Specialties Inc
Jan 2023 – Jan 2025
- Lead developer for "Factotum", a software portfolio management tool available in the Meta Horizon store for Quest 2 and Quest 3 and the Pico Store.
- Lead developer for "Spatial Logo", an educational coding tool available in the App Store for the Apple Vision Pro.
- Built data visualization XR applications using WebGL/WebXR, TypeScript, React, and RxJS.
- Created and maintained AWS deployments for authentication and billing APIs and mesh and texture distribution for our 3D data visualization app.
- Brought uplift to the React Native and WebXR open source ecosystems by maintaining rebeckerspecialties/benchmarking-test-app, rebeckerspecialties/gpuweb-cts, and rebeckerspecialties/babylon-testing-library, and contributing to libraries like callstack/react-native-visionos and wcandillon/react-native-webgpu.

### Software Engineer II @ Roblox
Jan 2022 – Jan 2023 | San Mateo, California, United States
- Improved time to fresh data on the friends page and in-game menu of the mobile app by 10%. I improved our native GraphQL client performance by 50%, mapped REST APIs to a new GraphQL schema, and oversaw a phased deployment to 5 million users globally.
- Led the implementation of the friends and experience detail pages for the new Roblox PS5 and Xbox apps. Oversaw deployment to 1 million first-time PlayStation users.
- Built developer tooling for test automation, GraphQL, and React. Reduced CI time by 60% while increasing test coverage.

### Software Engineer I @ Roblox
Jan 2021 – Jan 2022 | San Mateo, California, United States
- Ported React and React Native FlatList to the Roblox game engine. Oversaw phased deployment to 5 million global users while increasing crash-free sessions.
- Re-implemented Roblox Chat with FlatList, improving scrolling performance by 15%. Removed the legacy virtualized scrolling implementation that was the source of 20% of mobile app crashes.

### Undergraduate Researcher, Whitney Lab for Perception and Action @ University of California, Berkeley
Jan 2019 – Jan 2021 | Berkeley, California, United States
- Completed my Honors Thesis in Cognitive Science, "Decoding the Current and Previous Orientation from Small Targets in the Periphery using Magnetoencephalography." 
- Presented my research as a poster at the 2021 Vision Sciences Society Symposium.

### Software Engineer Intern @ Roblox
Jan 2020 – Jan 2020 | Remote
Added user session telemetry to the Roblox React Native app.

### Software Engineer Intern @ Samsung SARC | ACL
Jan 2019 – Jan 2019 | San Jose, California
- Developed synthetic graphics benchmarks for mobile GPUs using Unreal Engine.
- Created Python scripts to process and analyze GPU benchmark data.
- Developed synthetic machine learning benchmarks for mobile GPUs and CPUs using TensorFlow.


## Education
### Bachelor's degree in Computer Science, Cognitive Science
University of California, Berkeley

### Enloe High School


## Contact & Social
- LinkedIn: https://linkedin.com/in/henry-allen-3bb745150
- GitHub: https://github.com/hmallen99

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Source: https://flows.cv/henryallen
JSON Resume: https://flows.cv/henryallen/resume.json
Last updated: 2026-04-10