Computer Science undergraduate at the National University of Singapore (BComp Hons, 2025–2029). I like the layer where performance meets correctness — low-latency systems, language tooling, and the internals of things most people treat as black boxes.
Singapore · LinkedIn · shreyjain5132@gmail.com
Through summer 2026 I worked on Source Academy under Prof. Martin Henz — the open-source programming environment used by NUS's introductory Computer Science courses.
36 merged pull requests across 8 repositories, plus 33 reviews of other contributors' work.
Most repositories on this profile are forks used to stage that work; the merged results live upstream:
| Contribution | Upstream PRs |
|---|---|
Python stepper — PythonStepperEvaluator for Python §1/§2 in the Conductor plugin framework, with breakpoint() debugger support, per-step cumulative program output, complex-number support and runtime error reporting |
py-slang |
| Data visualiser — rebuilt for Conductor end to end: shared wire-format package, runner plugin, host plugin, tree classification, per-argument reference allocation | plugins |
| Frontend integration — dynamic web-plugin loading, sublanguage-scoped tab lifecycle, tab-ownership handling | frontend |
| Evaluator registration and plugin metadata resolution | language-directory · plugin-directory |
| Stepper correctness fixes; Scrabble module migration | js-slang · modules |
cls · Python
A global session manager for Claude Code. Its /resume picker only shows sessions for your current
directory, and nothing in it actually deletes. cls gives you one merged list across every project,
a recoverable trash, and a --resume that works from anywhere — including reclaiming sessions still
held by a live background process, without touching ones open in an interactive terminal.
A limit order book and matching engine, built with one teammate. I owned the engine internals:
- an O(1) hierarchical bitmap price index using hardware count-trailing-zeros instructions, so best bid/ask lookup is constant time regardless of book depth
- a pre-allocated order pool replacing per-order heap allocation, contiguous vectors in place of hash maps for cache-line locality, and branch hints on the matching hot path
- a move from JSON to Simple Binary Encoding on the order-entry path
- the original
std::mapimplementation retained as a runtime-switchable baseline, with throughput and latency benchmarked against it under synthetic order bursts
Teaching Assistant for CS1101S Programming Methodology I at NUS School of Computing.
Languages — C++ · TypeScript · JavaScript · Python · Java · C Tools — CMake · React · Redux · Jest · Boost.Beast · GitHub Actions · Git