[production]
KarmaCoin
Gamified waste-reduction rewards platform. Users earn KarmaCoins — pegged to INR, redeemable as real money — for eco-friendly actions like recycling.
~/home
AKASH
PRAJAPATI
Software Engineer — Backend Systems & Real-Time Infrastructure
// turning ideas into systems that scale
~/about
cat about.md
AP
// SDE-1, Backend
I'm a backend engineer at 3R ZeroWaste Pvt. Ltd., where I build KarmaCoin — a gamified waste-reduction rewards platform. Every recycling action a user takes turns into KarmaCoins, pegged to INR and redeemable as real money. My job is making sure that pipeline is fast, fair, and doesn't fall over at scale.
Day to day that means designing multi-factor coin calculation engines, wiring up real-time notifications, and keeping Redis, MongoDB and background job queues honest under load — alongside our CTO and tech lead. I care about systems that are simple to reason about, even when what they're doing under the hood isn't.
0
users at scale (Redis rate-limited)
0
core technologies in daily use
0
graduation year, B.Tech CSE
~/skills
ls stack/
runtime & core/
data & cache/
realtime & jobs/
cloud & ai/
~/experience
tail -f work.log
current
SDE-1, Backend — 3R ZeroWaste Pvt. Ltd.
Building KarmaCoin — gamified waste-reduction rewards platform
- [core] Architected KarmaCoin's coin-calculation engine — multi-factor scoring, forex conversion API, and order tracking, with coins pegged to INR.
- [realtime] Built a Socket.io + BullMQ real-time booking notification system; debugged agent availability, Redis TLS config and event handling end-to-end.
- [infra] Deployed and scaled services across Render and GCP Compute Engine; configured Redis-backed rate limiting for 30K+ concurrent users.
- [ai] Integrated Gemini 2.5 Flash to power a quiz system, using MD5 content hashing to guarantee globally unique questions.
- [strategy] Ran an AWS vs. GCP cost analysis across 5 scale tiers and 2 regions to guide the production migration plan.
~/projects
ls projects/
[concept / PRD]
Droppit
A peer-to-peer inter-city logistics concept — routing parcels through everyday travellers instead of dedicated fleets. Designed end to end, from PRD to system flow.
[personal tooling]
DSA & System Design Tracker
A self-built, phase-based interview prep tracker — DSA and system design roadmaps with checklists and progress tracking, built as an interactive tool for daily use.
~/education
cat education.md
CU
Chandigarh University
B.Tech, Computer Science & Engineering
2025~/contact