Simranjit
Singh

Frontend engineering lead shipping mobile and web products, end to end.

Six years building with React Native, React, Next.js and TypeScript. I'm the founding engineer and frontend team lead at JaroGO, a creator-economy app with live streaming, real-time chat and a marketplace, where I lead the development team and deliver new updates to users.

Get in touchSee selected work
JaroGO marketplace screen with trending products and creator stores
JaroGO creator profile screen with posts, followers and following counts
JaroGO explore screen with a grid of photos and videos from creators

Featured case study

JaroGO

A creator-economy app where people stream live, chat in real time, shop creator stores and watch films, on iOS, Android and the web. I joined as founding engineer and lead the frontend team that builds and ships it.

Role
Founding engineer & frontend team lead
Timeline
Jan 2025 – present
Platforms
iOS, Android and web
JaroGO WatchJARO screen with featured films and a Watch Now banner

Android

10K downloads

Google Play
JaroGO creator profile with posts, followers and following counts

iOS

6K downloads

App Store
JaroGO website home page: Content, Culture, & Community in one platform

Web

jarogomedia.com

Visit site

Key features

  • Live streaming
  • Real-time chat
  • Marketplace
  • In-app purchases
  • Movie streaming
  • Podcasts
  • News
  • Games
  • Broadcast streaming
  • Video processing
  • Video & image editor
  • Content moderation

Stack & integrations

  • React Native
  • Vite
  • TypeScript
  • TanStack
  • Agora
  • Stripe

Mobile projects

Apps that live in people's pockets.

React Native apps I've built and shipped to the App Store and Google Play, from fintech to AI social.

Hoobahoo on three phones: the new post composer, AI creator search, and the home feed

AI social app

Hoobahoo

A social network where people and AI beings share one feed. Post, chat and build friendships with AI companions that are there around the clock.

  • React Native
  • TypeScript
  • AI
  • Real-time chat
ShopSe merchant app on two phones: the side menu and the home screen with ShopSe Pocket earnings and hot deals

Fintech

ShopSe

Instant-EMI app that lets Indian merchants manage their stores, staff and payments, with brand deals for small businesses.

Downloads
100K+
Store rating
3.7 → 4.7
  • React Native
  • Encryption
  • RBAC
  • Fastlane
SML Lens on two phones: a geotagged photo of a bus with coordinates and address, and the SML Isuzu sign-in code screen

Geotagging

SML Lens

Camera app that stamps GPS coordinates, address, time and date onto every photo, with one-tap location sharing.

Downloads
10K+
Store rating
4.4
  • React Native
  • Camera
  • Geolocation
Encoding pipeline: a source video is encoded with FFmpeg into Full HD 1080p, HD 720p and SD 480p HLS renditions, and the player switches between them to match network speed.

Video streaming

Movie streaming app

Cross-platform movie streaming built with React Native. Every title is encoded with FFmpeg into SD, HD and Full HD HLS renditions, so playback adapts to the connection and stays smooth on slow networks.

  • React Native
  • HLS
  • FFmpeg
  • Adaptive bitrate

Web projects

Built for the browser.

Web apps and sites, from a notes app with a built-in calculator to landing pages.

jokalnote.netlify.app
Jokal landing page: “All the note taking essentials, with a built-in calculator” with a Get Started button

Notes · Web app

Jokal.App

Distraction-free note-taking that puts Markdown notes and an on-screen calculator in one workspace, with to-do lists, tables and budgets, real-time auto-save and version history.

  • Next.js
  • React
  • Markdown
writestuff-pi.vercel.app
Write Stuff home page on a dark grid: “Build a better world, one thought at a time” with an Explore button

Blogging

Write Stuff

A blogging and content-sharing site for discovering, writing and publishing ideas.

valuegg.netlify.app
Value.gg landing page: “Draw cards, bet for priority, choose to win” with a Join the Value Discord button

Gaming

Value.gg

Site for a two-player card game: draw a card, bet for priority, and the winner chooses higher or lower.

tesla-landing-lake.vercel.app
Tesla landing clone showing a red Model 3 on a mountain road with Order Now and Demo Drive buttons

Landing page

Tesla landing clone

A recreation of Tesla's Model 3 landing page: full-bleed hero, pricing line and order and demo-drive calls to action.

About

I care about the parts users don't have to think about.

How I work

Good engineering is invisible: taps respond instantly, animations don't stutter, errors don't surprise. I obsess over those fundamentals so the product feels reliable from the first second.

React and React Native are my home stack. I work async-first with teams across timezones, keep code small and readable, mentor when I can, and only ship things I'd be happy to put my name on.

What I build

  • Web applicationsNext.js, TypeScript, Tailwind
  • iOS & Android appsReact Native, Expo, CI/CD
  • Full product engineeringFrom scope to shipped release

Ways we can work

Start a conversation
  • 2–8 weeksFixed-scope projectsMVPs and launches with a clear scope, timeline and handover.
  • OngoingMonthly retainersA steady hand to build, ship and improve your product month to month.
  • As neededAdvisory & code reviewsArchitecture, audits, performance reviews and hiring help.

Experience

Six years, three teams, one craft.

Founding Engineer & Frontend Team Lead

JaroGO · USA · Remote

–

14Frontend developers led

  • Founding engineer owning frontend development, delivering core product functionality from implementation through release.
  • Lead a 14-member frontend team: task allocation, technical decisions, code reviews and feature delivery.
  • Drove key product features including live streaming, real-time chat, marketplace and movie streaming.
  • Integrated third-party SDKs and services: Agora, Stripe, Apple Sign-In, Google Sign-In and push notifications.
  • Mentor developers through technical guidance, code reviews, debugging support and knowledge sharing.
  • Manage iOS and Android build generation and release preparation, troubleshooting build issues for deployment.
  • React Native
  • Next.js
  • TypeScript
  • Agora
  • Stripe