About
I’m a software engineer based in Lahore, Pakistan. I’ve been building web applications for about seven years, mostly in Ruby on Rails, React and JavaScript, and working remotely with distributed teams for most of that time.
Right now I split my time between two engagements. At Intercom I work on the reporting product — external report sharing, scheduled delivery, and the data pipeline behind it. At Kimberly-Clark, through Toptal, I build Node.js APIs for a global customer identity platform and the event-driven pipeline that keeps product data consistent across their brands.
The work I find most interesting sits where product meets infrastructure: a notification platform I helped scale to millions of webhook requests a day, a reporting backfill across a dozen Elasticsearch indices, identity systems that have to be both invisible and correct. Most of what I write about here comes out of that — the problems that only show up under load, and what it actually takes to fix them.
Outside of client work I’m interested in systems-level engineering, and in how far AI-assisted development can be pushed on real production codebases.
The full history is in my CV.
Experience
Current
Intercom — Senior Product Engineer
Mar 2025 – Present
Remote, via Codevolve
Kimberly-Clark — Senior API Engineer
Oct 2025 – Present
Remote, via Toptal
Previously
PepsiCo — React Front-end Developer
Jan 2025 – Apr 2025
Remote, via Toptal
Toptal (Core Team) — Senior Full-stack Engineer
May 2022 – Oct 2024
Remote
Swvl — Senior Software Engineer
Jan 2022 – May 2022
Remote
Devsinc — Full-stack Engineer
May 2020 – Dec 2021
Lahore
SenSights.AI — Junior Software Engineer
Jan 2020 – Mar 2020
Lahore
Contact
- Email: mudassarhassan135@gmail.com
- GitHub: github.com/themudassarhassan
- LinkedIn: linkedin.com/in/mudassar9988