Hieu Pham
Principal Engineer at Roblox
Dublin, California, United States
Summary
👤
Senior🎓
Top SchoolHieu Pham is a Principal Engineer with a decade of experience building high-performance storage and database systems across tech leaders like Roblox, Amplitude, Meta, and Rockset. He specializes in designing and optimizing databases in Java, C++, and Rust, with hands-on experience in time-series, columnar OLAP, search indexes, vector databases, and key-value stores. At Amplitude he led ingestion and storage subsystems for an in-house OLAP engine, and his work at Meta and Rockset focused on scalability, reliability, and distributed systems. He is the author and maintainer of MuopDB, an on-disk Rust vector database supporting HNSW/IVF/SPANN and PQ quantization designed for per-user memory and shared knowledge bases. Based in Dublin, California, he combines deep systems-level expertise with mentorship experience, leading projects and coaching engineers. Notably, his contributions consistently target operational simplicity and production robustness—e.g., single-file collection layouts and mmap-backed indices to reduce operational overhead.
10 years of coding experience
9 years of employment as a software developer
GCE O Level, GCE O Level at Anglo - Chinese School (Independent)Economics, Economics at Singapore Management UniversityMathematics, Mathematics at National University of SingaporeGCE A Level, GCE A Level at St Andrew's Junior CollegeBachelor of Science (BS) Computer Science, Bachelor of Science (BS) Computer Science at University of Illinois Urbana-Champaign
Vietnamese, English
Github Skills (141)
bigtable10
copilot10
storage-engine10
jetbrains10
chatgpt10
lsm-tree10
persistent-storage10
developer-tools10
database10
key-value-store10
rockset10
storage10
matching10
persistent10
embeddable10
Programming languages (10)
Github contributions (5)
hicder/dotfiles
Apr 2017 - Oct 2024
Contributions:30 PRs, 90 pushes, 24 branches in 7 years 7 months
dotfiles
hicder/muopdb
Oct 2024 - Apr 2025
MuopDB - A Vector Database
Contributions:316 reviews, 426 PRs, 411 pushes in 5 months
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