Shuichi Tsutsumi
Freelancer
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolShuichi Tsutsumi is a freelance iOS engineer based in San Francisco with 14+ years building over 40 native apps, specializing in AR, Metal, and Bluetooth Low Energy IoT integrations. He has led and shipped consumer and assistive products—from a WHILL wheelchair controller to a music-for-the-deaf tactile app—and held senior engineering roles at Fyusion. An author of four iOS books and the maintainer of widely starred open-source samplers (totaling ~20,000 stars and multiple GitHub trending #1 repos), he’s known for turning platform features into practical, reusable examples. Shuichi combines deep graphics and low-level mobile expertise with a strong track record of product-focused leadership and educational contribution to the iOS community.
14 years of coding experience
8 years of employment as a software developer
Bachelor of Science (B.S.), Computer Science, Bachelor of Science (B.S.), Computer Science at Kyoto University
Japanese, Chinese
Stackoverflow
576reputation
22kreached
6answers
0questions
watchkit
top-5%
Github Skills (39)
healthkit10
objective-c10
beacon10
ios10
animation10
arkit10
watchkit10
animated10
swiftui-app10
scenekit10
ui-design10
coreimage10
coremotion10
uid10
mapkit10
Programming languages (8)
Github contributions (5)
shu223/ARKit-Sampler
Sep 2017 - Dec 2020
Code examples for ARKit.
Role in this project:
iOS Mobile Developer
iOS Mobile DeveloperContributions:72 commits, 3 PRs, 39 pushes in 3 years 3 months
Contributions summary:Shuichi primarily contributed to code examples for ARKit, implementing various AR experiences. They added samples for virtual object placement, AR interactions, and drawing within the AR environment. Furthermore, the user integrated CoreML and Metal for enhanced AR functionality, showcasing their ability to combine ARKit with other frameworks. They also refactored existing code, updated the README, and fixed minor issues.
metalios11coremliosswift-4
shu223/PulsingHalo
Dec 2013 - Oct 2021
iOS Component for creating a pulsing animation.
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:23 releases, 78 commits, 9 PRs in 7 years 11 months
Contributions summary:Shuichi primarily contributed to the development of an iOS component for creating a pulsing animation effect. Their work involved creating a custom `PulsingHaloLayer` using QuartzCore, defining properties for customization (radius, duration, color), and integrating it into a demo application. The commits demonstrate the implementation of the animation logic, including scaling and opacity changes, as well as API updates to enable dynamic adjustments.
swiftanimationios
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