Nov 2025 - Present
Software EngineeratPolymarketNow
Infrastructure for CFTC regulated prediction markets - low-latency systems behind a high-volume exchange.
Available · building at Polymarket
William Zeng
Software engineer building high-performance, ergonomic systems. Currently at Polymarket on the CFTC regulated side of prediction markets. Computer Engineering at the University of Waterloo.
- Role
- Software Engineer
- Focus
- Infra · Systems · Rust / C++
- Based
- Waterloo, Canada
00
Focus
I like the layer where correctness meets throughput: storage engines, caches, schedulers, and the APIs that sit on top of them. The goal is always the same - make the fast path obvious and the wrong thing hard to write.
- 01Designing infrastructure that stays predictable under load.
- 02Writing systems in Rust and C++ that are ergonomic to use, not just fast.
- 03Shipping research-grade ideas as things people actually run.
01
Experience
1 of 5
Summer 2025
Software Engineer InternatShopify
Product Taxonomy team - tooling and data pipelines for the catalog that powers millions of merchants.
Apr - Dec 2025
Software EngineeratDreamwell AI
Generative UI and data warehousing - turning model output into interfaces and a queryable analytics layer.
2024 - 2025
Undergraduate ResearcheratVision & Image Processing Group, UWaterloo
4D spatiotemporal reconstruction - recovering scene geometry and motion over time from multi-view input.
2023
ML Research AssistantatUniversity of Oxford
Classical supervised classification on medical datasets, with a focus on robustness and interpretability.
02
Selected Projects
Vibe Draw
A 3D generation tool that turns rough sketches into models, built on Trellis and Cerebras. Grew into a small product with paying users.
1,900+ stars3M+ views$2K MRR
TrellisCerebras3DNext.js
MidDB
An embedded OLTP key-value database in Rust, inspired by LevelDB and RocksDB. LSM-tree storage with MVCC transactions for snapshot-isolated reads.
RustLSM TreeMVCCStorage
Stu3dio
An AI movie studio that generates short films end to end from a single prompt. Hack the North 2025 finalist.
HtN '25 Finalist
GenAIPipelinesVideo
03
Selected Wins
- Hack the North 2025 - FinalistStu3dio
- GenAI Genesis 2025Best use of Gemini
- UofTHacks 122nd place overall
- Hack the North 20241st place, RBC track
- AIME QualifierCSMC / Hypatia Honour Rolls
04
Toolkit
Languages
- Rust
- C++
- TypeScript
Systems
- Distributed Caching
- Multithreading
- Databases
- Systems Design
Application
- Next.js
- iOS / Swift
- Data Warehousing
05
Contact
Building something at the systems layer, or want to compare notes on storage engines? Send a note and it lands straight in my inbox.
© 2026 William Zeng - built fast, kept simple.