Software Engineer at BrowserStack · indie developer behind @calcont
Mumbai, India
I build backend systems for a living and ship my own products for fun — usually right after the gym.
I got hooked on building with Python and Django, and these days I mostly live in backend services, infra and observability. On the side I run CalCont, a small family of web tools with real users, built simply because I wanted them to exist. When I'm not shipping I'm at the gym, travelling somewhere new, or tumbling down a system-design rabbit hole.
- 🔭 Currently building drop.calcont.in — a privacy-first file toolkit that runs entirely in your browser
- 🌱 Currently learning system design & AI engineering
- ✍️ I write at blog.amarkhamkar.com (engineering + experiences) and blog.calcont.in
- 💬 Ask me about backend engineering, Node.js, Python, Kubernetes, observability
- 📫 Reach me at contact@amarkhamkar.com
| Project | What it is |
|---|---|
| CalCont | My biggest side project — an SEO-optimised toolkit with 40+ utilities serving 30K+ monthly users, several ranking #1 on Google. Django PostgreSQL Cloudflare |
| Drop | Privacy-first file toolkit — PDF tools, video compression, OCR and AI, all local via WebAssembly. Next.js WebAssembly FastAPI Redis |
| Draw | A collaborative online whiteboard — sketch, draw and add text together in real time. JavaScript Canvas fabric.js |
| SafeWrite | A secure notes app on the Play Store. Flutter Firebase |
| 3D Portfolio (v1) | My old portfolio — an immersive 3D world, kept alive for the nostalgia. Three.js React WebGL |
| Role | When | |
|---|---|---|
| BrowserStack | Software Engineer · Integrations Platform | Dec 2024 — present |
| Media.net | Web Application Developer | Jul 2023 — Dec 2024 |
| HackerRank | SDE Intern | Jul 2022 — Dec 2022 |
At BrowserStack I own features end to end on a platform handling 1K+ RPS — cutting API latency ~70%, running zero-downtime DB upgrades, and building Claude-powered ops and security agents that diagnose incidents and open tested PRs. Before that, backend on a high-scale ad-delivery pipeline at Media.net serving publishers like Yahoo and NYTimes.
- The Two Principles That Made Me Delete More Code Than I Write: YAGNI & KISS
- From console.log to Kibana: How Your Pod's Logs Actually Reach Elasticsearch
- The 8-Second Query That Was Actually Five Doomed Retries
- Memory Buffer Leaks in Node.js Streams: Hidden Risks and How to Avoid Them
- How I Cut My Hosting Costs by Over 80% Without Sacrificing Performance
Languages
Backend
Infrastructure
Databases
Observability & CI
Frontend
Explored in college and still fond of: Unity, AR, TensorFlow, Keras.
