$ whoami
I'm Raghav Khandelwal, a software engineer. I enjoy understanding systems at a fundamental level, often building things from the ground up rather than relying on off-the-shelf frameworks, because it helps me write more reliable, efficient software. My interests span backend systems, distributed architecture, and cloud infrastructure.
Community Dreams Foundation
Building a TypeScript/Express donor management backend with JWT-based access control, Stripe and Mailchimp integrations, and Redis/Bull job queues. Automated 10+ hours of weekly data exports and cut client-facing wait times by 70%, with Jest, Supertest, and GitHub Actions gating merges.
DXC Technology
Built Python/SQL ETL pipelines moving 6+ GB of data per month from DB2 to PostgreSQL and REST APIs for insurance policy operations. Containerized applications with Docker on AWS and reduced query latency from 4.2 seconds to 800 milliseconds.
Go / PostgreSQL / net/http
A REST API with optimistic concurrency control, token authentication, and per-client rate limiting. Includes full-text search with GIN indexes, filtered and paginated queries, structured logging, and graceful shutdown.
Go / TCP / HTTP/1.1
An HTTP/1.1 server built from raw TCP sockets, without Go's net/http abstractions. Implements a state-machine request parser, concurrent connections with goroutines, response serialization, and signal-driven graceful shutdown.
AgAid Hackathon / Python / PyTorch / Flask / React
A Transformer-based model predicting Snow Water Equivalent across 9M+ records from eight meteorological datasets, achieving 87.8% accuracy. Served predictions through a Flask and React app with live CSV ingestion and interactive visualizations.
A working shelf of books shaping how I think about software and systems.
Planned and completed books will be collected here as the shelf grows.