Rex Chai
Procurement Manager at Huawei Technologies
Kuala Lumpur, Malaysia
Summary
👤
Senior🎓
Top SchoolRex Chai is a procurement leader based in Kuala Lumpur with nine years of hands-on experience managing high-value engineering and logistics sourcing across telecommunications and FMCG sectors. As Procurement Manager at Huawei he oversees annual purchases exceeding MYR100M, leading supplier qualification, category and contract management, digital transformation initiatives, and cross-functional stakeholder engagement to meet SLAs and KPIs. He built procurement rigor earlier at Coca-Cola—delivering major RFP savings, SAP-driven process improvements and nationwide equipment deployment—and led product development work at a startup, bridging technical teams and designers. Unusually for a procurement professional, Rex is an active open-source contributor to the Rust project, optimizing integer square root algorithms and benchmarks, reflecting a rare combination of procurement strategy and deep technical curiosity. He holds a Mechanical Engineering degree (CGPA 3.82) and is known for mentoring teams, improving internal controls, and driving efficiency through both people and code.
9 years of coding experience
2 years of employment as a software developer
Bachelor's degree, Mechanical Engineering, CGPA 3.82, Bachelor's degree, Mechanical Engineering, CGPA 3.82 at Universiti Tenaga Nasional
English, Chinese, Malay
Github Skills (11)
algorithm10
data-structures10
algorithms10
rust10
data-structure10
testing10
benchmark9
benchmarking9
compiler-compiler8
lang8
compiler8
Programming languages (14)
Github contributions (5)
rust-lang/rust
Apr 2020 - Dec 2020
Empowering everyone to build reliable and efficient software.
Role in this project:
Backend Developer & Test Automation Engineer
Backend Developer & Test Automation EngineerContributions:57 reviews, 7 commits, 12 PRs in 8 months
Contributions summary:Rex contributed to the Rust standard library, specifically focusing on integer square root (`isqrt`) methods and their associated tests. Their contributions involved improving the `isqrt` tests by enhancing input selection and cross-validation with `checked_isqrt`, and added benchmarks for performance evaluation. Furthermore, they optimized the `isqrt` and `checked_isqrt` methods with Karatsuba algorithm and lookup tables. The user also worked on the `x setup` tool and stabilized the `isqrt` feature.
crategarbage-collectionrustreliablecompiler
ChaiTRex/rust
Feb 2024 - Feb 2025
Contributions:59 pushes, 9 branches, 1 comment in 11 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.