Full-stack engineer & architect — Gurgaon, IN
ALT -000MSAURAV
KUMAR— full-stack engineer and architect. Apps, web platforms and embedded hardware.
I build production software end-to-end.
One engineer — app, backend, firmware.
- 300k-line transport SaaS, solo
- 5 apps live on Play & App Store
- C++ that flashes STM32 from a phone
DEPTH 01 — APPLICATION LAYER
Store-ready apps that survive real users — payments, maps, offline-first data, push, and native modules when Flutter isn't enough.
- Flutter · Kotlin
- React Native · Expo
- Play & App Store
- AdMob · IAP · Billing
DEPTH 02 — SERVICE LAYER
Full platforms, not just frontends — multi-tenant SaaS, five-role dashboards, realtime tracking, payment webhooks and the databases underneath.
- Next.js · React
- NestJS · Node.js
- PostgreSQL · Prisma
- WebSockets · Redis · AWS
DEPTH 03 — HARDWARE LAYER
Where software meets solder — firmware, industrial HMIs, USB tooling and fleet platforms. Debugged from the UI down to the logic analyzer.
- STM32 · HAL · C/C++
- ESP32 · FreeRTOS
- Android NDK · USB-OTG
- MQTT · Modbus · RS485
Selected work — recovered from the field
PROOF,
NOT PROMISES
Six of twenty-plus shipped products. Every case study includes the stack, the scale and the engineering that made it work.
EzeFare
Multi-tenant employee-transport & ride-dispatch SaaS — solo-built, ~300k lines, live in production.
Dasho
All-in-one delivery & marketplace super-app — customer, merchant and driver flows in one Flutter platform.
STM32 Field Programmer
An Android phone that replaces a PC as an STM32 production programmer — native C++ over USB-OTG.
PulseFleet
Self-hostable industrial IoT platform — MQTT fleets, TimescaleDB telemetry, rules, alarms and OTA at 2,000 msg/s.
SiteCalc
Ten offline construction calculators that draw a to-scale diagram as you type — built to a 598-line spec.
ToolSamurai
An engineering-tools platform: 25 hardware & firmware calculators, a paid API, and an embeddable widget system.
Live right now
ALL SYSTEMS NOMINALHow we'll work
NO SURPRISES,
JUST MILESTONES
The same agency-grade process behind EzeFare and Dasho: written proposals, milestone acceptance, audit trails.
- 01
Scope it straight
A short call, then a written proposal with milestones, acceptance criteria and a price. No vague estimates.
- 02
Design the system
Architecture before pixels — data model, APIs, auth, infra. You see the plan before the first commit.
- 03
Ship in milestones
Working builds you can touch every milestone — store-ready APKs, staging URLs, live dashboards.
- 04
Run it in production
CI/CD, monitoring, store compliance, post-launch iteration. I've operated what I've shipped.