Harshal Sawant

Software Engineer

About Me

"I'm Harshal Sawant, a backend engineer based in Mumbai, India. I build fast backend services, distributed systems, and developer tools, mostly in Go.

I like the parts most people ignore: how the operating system schedules work, how memory gets used, and what happens to a system when it's under heavy load.

Experience

OSS Developer · Freelance

2024 - Present · active

Remote

  • Built backend services in Rust using Actix Web, focused on fast and reliable requests.
  • Built REST APIs and backends, handling routing, auth, validation, and errors.
  • Used PostgreSQL, Redis, Docker, and CI/CD to keep services stable and easy to maintain.

Projects

HaruStream

Active

A multi-provider streaming aggregator — browse trending, top-rated, and popular movies/series pulled from 15+ provider sources, with search and a personal library.

  • Next.js
  • React
  • TypeScript
  • Tailwind CSS
  • shadcn/ui

TermChat

Building

Real-time group chat in your terminal — a lightweight TCP server broadcasts every message to all connected clients instantly, no accounts required.

  • Rust
  • Tokio
  • Ratatui
View all projects

Posts

Distributed Tracing Playbook: Finding the Slow Span in a 3rd-Party Integration

A solution engineer's workflow for using OpenTelemetry traces to localize latency in a chain that crosses your service, a customer VPC, and a vendor API.

Install Linux Without USB: GRUB ISO Boot on Dual Boot

How to install Linux on a dual-boot system without a USB drive by booting an ISO from disk using GRUB.

View all posts

© 2026 Harshal

Mumbai, India