Hey.
I'm Paritosh — a full-stack engineer

who owns outcomes, not just code. Five years in, now leading engineering at Fhynix.

↳ 1,000+ days on LeetCode. not one missed.
scroll to meet me ↓
Paritosh Batish
a bit about me

Nice to meet you

I'm a full-stack engineer based in Chandigarh, India, with 5+ years building products end to end. Most of my recent work is React Native — but the backend is just as real. I care about the systems under the UI, and the cost of running them.

I tend to own the whole thing. I shipped an Android platform solo, architected an on-device AI assistant to keep server costs near zero, and designed the recurrence engine the entire product is built on. My arc has been SDE 1 → SDE 2 → Lead → Head of Engineering — steadily more ownership.

I hold every claim to one standard: would it survive an engineer asking me about it in an interview?

5+
YEARS
EXPERIENCE
3
COMPANIES
SDE1 → HEAD OF ENG
Education
B.E., Chitkara University
Patiala, Punjab · 2018–2022 · 9.21 GPA
the quiet part

I show up.

Three-plus years on LeetCode without missing a single day — through jobs, side projects, and everything in between. The same habit shows up in the work I ship.

the road so far

Where I've worked

DEC 2023 — PRESENT · REMOTE
Fhynix

Lead Engineer → Head of Engineering

Calendar productivity app · React Native · hundreds of active users
  • Shipped the entire Android platform solo — the app was iOS-only — from core bug fixes through Play Store launch.
  • Architected an on-device AI assistant (natural-language task CRUD, bulk create, image & voice input) entirely on the frontend — no AI server — keeping cost near zero.
  • Designed an rrule-based recurrence engine with a backward-compatible live migration — the core system every other feature is built on.
  • Built a unified task data layer (windowed store + cache + API, one read/write path) that cut recurring production issues from roughly weekly to monthly.
  • Self-built the subscription & payments system end-to-end (App Store / Play IAP) with webhook + daily-poll syncing; led a small team with planning-first culture and strict PR reviews.
APR 2021 — NOV 2023 · HYDERABAD
CAW Studios

Software Engineer II

Product engineering studio
  • Designed & co-developed a meta-driven no-code UI form + list engine (React + TypeScript), cutting UI development time by ~30%.
  • Built a shared, swappable component & service library in an NX monorepo (dependency injection, atomic design) for Web + React Native — including an auto-generated API SDK and a unified Redux store.
  • Built ~80% of the frontend for the product that later became the Fhynix app — which I now lead.
AUG 2019 — MAR 2021 · CHANDIGARH
Anukai Solutions

Software Engineer I

Civic-tech startup tackling road-traffic safety
  • Built a scalable REST API (Node.js) with real-time inventory via Sockets for a helmet-rental service with the Patiala Foundation.
  • Built multi-blackspot accident-area identification with real-time insights using Google Maps, in collaboration with Punjab Police.
  • Digitized end-to-end case filing: role-based workflows (RBAC), approval mechanisms, and automated PDF generation.
the toolbox

What I work with

Languages & Frontend
JavaScript TypeScript React Next.js React Native Redux Storybook
Backend & Systems
← the real depth
Node.js Express REST Sockets Webhooks BullMQ MongoDB SQL JWT RBAC rrule
Architecture & Practice
NX Monorepo Dependency Injection MVC Atomic Design Caching layers Cost-aware design
UI Libraries & Tooling
Material UI Chakra UI Styled-components react-native-paper Sentry CleverTap Gemini Flash
things I've built

Selected work

FLAGSHIP2023 — PRESENT

Fhynix — AI Calendar App

A React Native calendar productivity app on iOS + Android, serving hundreds of active users. As Head of Engineering I own the whole stack — and built its three hardest pieces: an on-device AI assistant (no server), an rrule recurrence engine with live migration, and a self-built IAP subscription system.

React Native Node · MongoDB Gemini Flash BullMQ · IAP
Fhynix — AI calendar app marketing image
Earlier — things I built exploring
Chandigarh Police social complaints monitor
2019 · CIVIC-TECH

Chandigarh Police — Social Complaints Monitor

A real-time portal that watches Twitter for complaints tagged to Chandigarh Police (#chandigarhpolice, #crime, #pcr) and surfaces them for action. Built in a 36-hour hackathon — recognized by Chandigarh Police.

Python · Flask MongoDB
Public bus location tracking
PROOF OF CONCEPT

Public Bus Location Tracking

Real-time location tracking for public buses to cut waiting times — buses POST their location and the server broadcasts to riders live. My most-developed personal repo.

Express · Socket.IO MongoDB
Google Maps reviews scraper
UTILITY

Google Maps Reviews Scraper

A small Python scraper that pulls reviews from a Google Maps link and saves them to an XLSX file for analysis. Built for educational purposes.

Python XLSX
a few highlights

Wins & recognition

Winner — National-Level Hackathon (OWASP)
Thapar University
2nd Place — CODATHON 2020
Competitive coding placement
Certificate of Appreciation — Patiala Foundation
For the Helmet Bank project · 2020
Recognized — Chandigarh Police Hackathon 2019
Appreciated for the social-complaints idea (team of 3)
get in touch

Say hi.

Always up for a good engineering conversation — whether it's about systems, cost, or something you're building. Drop me a line.

Paritosh Batish Hand-drawn & built by Paritosh · Chandigarh · 2026