Arnab Roy

I’ve been writing code professionally for 6+ years, building backend systems and data infrastructure.

My path into software started with competitive programming—2x ACM-ICPC regionals participant, and solved 1000+ problems across different judges. That problem-solving foundation shaped how I approach engineering: break down complexity, optimize for performance, understand the system deeply.

These days I work on data infrastructure. Recent projects include a DBT/Snowflake pipeline that cut data ingestion time by 81%, a fault-tolerant reporting service with 99.9% uptime using AWS Lambda and Step Functions, and observability tooling with Datadog that improved incident response by 75%. I care about developer experience—automated onboarding that reduced setup time from 4 hours to 15 minutes.

I work in the terminal—neovim, tmux, zsh. Type on a Kinesis Advantage360 Pro with a custom ZMK layout. I’ve spent enough time configuring LSPs and keybindings to have opinions about them.

Outside of work, I run and cycle. Completed 300km running and 800km cycling in 2025, which I wrote about in this post.

2x AWS Certified (Developer Associate, Cloud Practitioner).

My primary tech stack includes Python, Rust, PostgreSQL, Snowflake, DBT, Terraform.

If you want to connect, find me on LinkedIn, GitHub.