Pratham Mehta, Developer in Bengaluru, Karnataka, India

Pratham Mehta

Software Developer

Bengaluru, Karnataka, India
Toptal Member Since
January 13, 2020

Pratham is a seasoned developer who, for years, has been successfully writing and delivering mobile apps for clients from all over the world. He's also successfully served as the CTO of GrabbnGo. Where Pratham shines is the creation of React Native cross-platform apps that perform flawlessly on iOS and Android; he’s also quite good working within teams due to his willingness to share and communicate.

Pratham is available for hire
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Google Cloud Functions, Firebase, Node.js, React Native
lastbit, SIA
Blockchain, Bitcoin, React Native
React Native


Bengaluru, Karnataka, India



Preferred Environment

Linux, Windows, Reactotron, MacOS, GitHub, Visual Studio Code (VS Code)

The most amazing...

...thing was building the iOS/Android apps as well as the back-end geometric algorithms to performs complex calculations to find points of interest along routes.

Work Experience

2019 - PRESENT

Sole Developer
  • Worked as the sole developer for the front-end and back-end technologies on Fly: an app that allows aviation enthusiasts to log all their journeys across the world.
  • Oversaw the end-to-end deployment of the project.
  • Delivered the app to the App Store.
  • Created the UI/UX of the app.
Technologies: Google Cloud Functions, Firebase, Node.js, React Native
2018 - PRESENT

Freelance Mobile Developer

lastbit, SIA
  • Worked at lastbit: a cryptocurrency company building software and hardware to help people securely store and spend their cryptocurrency.
  • Collaborated with the lastbit team to build their entire bitcoin wallet.
  • Integrated SegWit, Bech32, BIP44, BIP49, and so on into the bitcoin wallet.
  • Implemented a lightning wallet that was deeply integrated with the bitcoin on-chain wallet.
Technologies: Blockchain, Bitcoin, React Native
2018 - 2019

Freelance Mobile Developer

  • Worked closely with the team at CorProof to build their iOS and Android apps. CorProof is an app that allows construction workers to perform daily activities like check-in/check-out, report an incident or complete safety training right on the app.
  • Built the cross-platform app with a single codebase.
  • Architected and built an offline-first app where all user actions were locally cached and synced with the server when a connection was available.
Technologies: React Native
2016 - 2018


  • Served as the CTO of GrabbnGo and was responsible for the entire tech stack.
  • Filed a patent at GrabbnGo for "Delayed Just In Time Ordering."
  • Architected the entire system along with schemas, technologies, and frameworks used.
  • Built a real-time location arrival and departure prediction and engine.
  • Developed an end-to-end inventory-and-order management system capable of maintaining inventories of large grocery stores.
  • Built an indoor-mapping solution capable of mapping building layouts like grocery stores, malls, or airports and provided real-time directions.
Technologies: Express.js, Node.js, Django, iOS, React Native
2014 - 2017

Lead Mobile Developer

  • Shyne is a music app that makes it easy for anyone to create music.
  • Worked on the iOS application for Shyne.
  • Implemented a multitrack audio recording engine using Core Audio and the Amazing Audio Engine.
  • Built multichannel recording for the app enabling users to record created music and their voice at the same time.
  • Built an in-app purchases store allowing users to purchase new packs of music.
Technologies: Core Audio, The Amazing Audio Engine (TAAE), iOS
2015 - 2015

Summer Intern

  • Built a tool to enable teams across Microsoft to quickly deploy build, test, and production environments.
  • Worked extensively with Azure and Azure VM Management.
  • Supported automated environment deployments with ARM templates.
  • Performed system configuration and automation using desired state configuration.
Technologies: Windows PowerShell, Azure, .NET, C#


Corproof | An App to Help Construction Workers Have Safer and More Productive Lives

Corproof is a React Native app for iOS and Android that helps construction workers stay safe on the job while being productive. I built the entire app based on the beautiful designs provided by the client.

Project Details:
• The app was designed as an offline-first app where all data was locally cached. Even form submissions are saved locally and submitted when an internet connection is available.
• The app uses Firebase cloud messaging for notifications.
• The app uses the Geolocation API to get the location of the user.
• The app works with complex and dynamically generated forms based on an API.

lastbit | Secure App/device to Store and Spend Your Cryptocurrency
lastbit is a hardware company that specializes in making highly secure devices to store and spend cryptocurrencies.

I worked as a freelancer at lastbit and helped build the iOS and Android apps on React Native. The app works with several advanced technologies like Bech32, SegWit, and more.

The app also features a lightning wallet for Bitcoin where users can instantly make transactions without having to wait for on-chain confirmations.

Shyne! | Make Music

Shyne is an iOS app that lets users mix different types of music, record audio tracks, sing over the audio and share the audio with their friends. I built the entire app.

The app features an Audiobus integration, in-app purchases, multi-channel audio processing, and file management.

GrabbnGo | Virtual Drive-through App

Order your favorite food on the GrabbnGo app and pick it up on your way home, at the office, or at a friend’s place. You won’t even need to park your car. Just reach the GrabbnGo pick-up point next to the restaurant and hot-and-fresh food will be waiting for you.

I was responsible for the entire tech stack at GrabbnGo and built the app from scratch in React Native. I also built part of the server in Django.



React Native, Django, Express.js, .NET, Windows PowerShell, The Amazing Audio Engine (TAAE)


Google Maps, Facebook Login, Node.js, Core Audio


iOS, Android, Firebase, Mobile, Apple, MacOS, Windows, Linux, Blockchain, Azure, Visual Studio Code (VS Code)


Location Services, Apps, OOP Designs, Bitcoin, Google Cloud Functions


JavaScript, Python 3, C#


Sketch, GitHub, Reactotron


PostgreSQL, Redis


2012 - 2016

Bachelor of Technology Degree in Information Technology

VIT University - Vellore, India



Improving Deep Neural Networks: Hyperparameter Tuning, Regularization, and Optimization via Coursera


Neural Networks and Deep Learning via Coursera


Understanding Einstein: The Special Theory of Relativity

Stanford University via Coursera