Asnim Ansari.Backend, Rust and trading systems

Hey, I’m Asnim. I build real-money trading systems in Rust and Golang.

I’m a senior backend engineer and Rustacean at Sensibull (by Zerodha). I like distributed systems, low-latency infra, and the occasional side project. Read the resume for the full story, or browse the writing.

01WritingAll posts

Coming back from a shoulder injury

After three months of physio for a rotator cuff strain, I'm lifting again. This is the 12-week plan I wrote to get strong without ending up back at the physio: starting weights from my own training log, a pain rule decided in advance, and every session set up in Hevy.

The middleware that authenticated nothing

A session middleware in our Axum API let anonymous callers through to any handler that forgot to ask who they were. Here's the bug, why the obvious fix isn't enough, and the three designs we measured before picking one.

02Elsewhere