Simon Choi - AI Architect at ClickUp

Simon Choi

AI Architect at ClickUp

Berlin, Germany

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Summary

🤩

Rockstar

🎓

Top School

Simon Choi is an AI Architect and principal engineer based in Berlin with 10 years building performant mobile and backend systems, currently shaping ClickUp’s AI and mobile architecture. He led the ground-up rewrite of ClickUp’s mobile app, architected an offline-first real-time chat with local-first storage, and built an embedded Rust database serving 500K+ records with sub-ms queries. An electrical engineer by training, Simon is a prolific open-source maintainer in the Dart/Flutter ecosystem—authoring widely used packages like Hive, Isar, AutoSizeText and utility libraries that improve developer ergonomics. Hands-on across stack layers, he blends low-level systems work (databases, binary JSON parsers) with polished mobile UX improvements, plus a knack for shipping tooling that accelerates teams.

11 years of coding experience

11 years of employment as a software developer

Bachelor of Engineering, Electrical Engineering, Bachelor of Engineering, Electrical Engineering at Technical University of Munich

French, English, German

Github Skills (35)

ios10

lib10

api-design10

flutter-apps10

testing10

databases10

database-administration10

logger10

indexing10

hive10

flutter-test10

manipulate10

audit-logging10

database-design10

text-rendering10

Programming languages (16)

JavaC++CRustTeXHTMLKotlinTypeScript

Github contributions (5)

simc/auto_size_text

Sep 2018 - Jan 2022

Flutter widget that automatically resizes text to fit perfectly within its bounds.

Role in this project:

Mobile Developer (iOS)

Contributions:94 commits, 15 PRs, 98 pushes in 3 years 4 months

Contributions summary:Simon primarily contributed to the Flutter-based repository, focusing on implementing and improving the `AutoSizeText` widget. Their work includes adding and enhancing demo app functionality, including features for rich text support, and fixing the text scaling based on screen size and word wrap. Their efforts indicate a focus on refining the widget's behavior and ensuring its correct rendering across different scenarios and devices.

flutter-widgetflutteriosandroid

isar/hive

Jul 2019 - Aug 2022

Lightweight and blazing fast key-value database written in pure Dart.

Role in this project:

Back-end Developer & Database Engineer

Contributions:16 releases, 6 reviews, 333 commits in 3 years 1 month

Contributions summary:Simon primarily contributed to bug fixes and made minor API changes within the `isar/hive` repository, a key-value database written in Dart. Their work focused on fixing small problems and making minor API adjustments across multiple files, indicating a strong understanding of the database's internal workings. The commit messages suggest involvement in the improvement and maintenance of the core database functionalities, including frame, box, and other database internal data structures.

dartkey-value-databaseflutterkey-valuenosql

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