Koh Jie
Information Technology Specialist
Singapore
Summary
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RockstarKoh Jie is an Information Technology Specialist based in Singapore with a decade of hands-on experience building secure backend systems. At ST Engineering - MRAS he blends operational IT responsibilities with software development, focusing on reliable, auditable solutions. An active open-source contributor, he has enhanced the Minimal Anti-Collusion Infrastructure (MACI) project by refactoring contract tests, improving smart contracts and circuits, and optimizing data structures for voice credit accounting—work that highlights both security and performance sensibilities. Koh combines pragmatic engineering with security-first thinking, often surfacing efficiency gains in legacy contract code.
10 years of coding experience
Github Skills (7)
proofs10
contract10
smart-contracts10
proof10
solidity10
ethereum10
security9
Programming languages (15)
Github contributions (5)
privacy-scaling-explorations/maci
Dec 2019 - Dec 2021
Minimal Anti-Collusion Infrastructure (MACI)
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:49 reviews, 1002 commits, 277 PRs in 2 years 1 month
Contributions summary:Koh refactored contract tests to use MaciState and implemented several circuit and smart contract improvements. These included updates related to user signup and message processing. The user's work also included efforts to add a more efficient data structure in the smart contract, as well as implement functions for total spent voice credits.
antiinfrastructuremacicircomethereum
geometryxyz/secp256k1_hash_to_curve
Sep 2022 - Oct 2022
Contributions:29 commits, 3 PRs, 29 pushes in 1 month
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