Backend engineer building systems that handle real concurrency and state.
I build backend systems, developer tools and products from the ground up, currently going deep in distributed systems and developer tooling.
A live exchange simulator with a price-time-priority matching engine, order book, REST API, and WebSocket market feed.
- O(log n) price-level insertion and O(1) best-bid/ask lookup
- Redis Streams for order sequencing and Redis Pub/Sub for correlated request/response
- A separate worker consumes trades and builds OHLCV candles outside the matching path
| Scenario | Workload | Result | p95 latency |
|---|---|---|---|
| Unmatched limit orders | 10,000 | 517 orders/sec · 100% success | 163.2 ms |
| Matched limit orders | 5,000 | 507 orders/sec · 100% success | 168.4 ms |
| Single-order sweep | 1,000 maker orders | Completed in 148.4 ms | — |
| WebSocket fan-out | 500 connections | Opened in 107 ms · 500/500 received update | 24.6 ms |
A stateful alternative to curl, built from scratch in Rust - stores base URLs, headers and variables so you're not retyping the full request every time.
- 50+ GitHub stars · 150+ release downloads · 70+ installs via Crates.io · 3 external contributors
- Keeps base URLs, headers, variables, saved requests, and command history across sessions
- Uses an AST-based parser with separate execution and session modules
- Supports 7 HTTP methods and ships binaries for macOS, Linux, and Windows
- Built with Rust, Reqwest, Reedline, and Serde
Languages
Backend
Data
Infrastructure
Build systems. Ship software. Learn from what breaks.