CS undergrad at UPES Dehradun ('27). I build market-data systems in C++ and the infrastructure around them. Candidate Master on Codeforces · GSoC 2026 contributor @ CCExtractor.
Parses a full-day ITCH 5.0 tape at ~8.9M messages/sec (271 MB/s) on a single core, maintaining live L2 books across all 65,536 locates. Per-message dispatch: p50 153 / p99 458 rdtsc ticks (mean 172.5, warmup discarded).
Every hand-written optimization is benchmarked by ablation — one toggle disabled at a time, identical -O3 -march=native build, every variant verified fingerprint-identical against the reference book:
| engine variant | M msg/s |
|---|---|
| full engine | 8.87 |
std::unordered_map instead of unified order registry |
7.39 |
| sorted-vector book instead of windowed price ladder | 6.34 |
no reserve() / allocator tuning |
8.35 |
The I/O-free core also compiles to a 46 KB WebAssembly module with bit-identical output — which, on a 22.8M-message slice, outruns the native build (17.3 vs 16.4M msg/s). The repo includes an event-driven backtester (order-flow-imbalance study across every symbol on the tape, spread-cost-adjusted P&L), plus the null results — io_uring vs mmap, PGO — written up instead of deleted.
→ pulk17/nasdaq-itch-orderbook
- GSoC 2026 @ CCExtractor — building out the REST API for sample-platform, the org's CI and sample-testing infrastructure.
- k8n — Kubernetes cluster visualizer: live topology via
client-go, Helm release management. Go · Next.js. - undercover-game — real-time multiplayer social deduction PWA on zero-cost infra. TypeScript · WebSockets · Redis.
Codeforces — pulk1t (Candidate Master) · LeetCode — pulk1tt (Knight) · LinkedIn · chauhanpulkit1708@gmail.com