James Lee

Sanjay Singh Bisht

Mobile Application Developer

About Me

Results-driven Senior Mobile Application Developer & Team Lead with over 10+ years of expertise in building and scaling mobile applications across Android (Java, Kotlin, Jetpack Compose), Kotlin Multiplatform (KMP), and cross-platform Flutter. Skilled in blockchain (Corda), modern app architecture, AI-powered development, and team leadership. Proven track record of delivering 20+ enterprise-grade apps to the Play Store & App Store while optimizing performance and leading teams to meet tight deadlines.

Passionate about innovation, mentoring developers, and delivering impactful mobile solutions that drive business growth. Adept at combining strong technical expertise with leadership to ensure seamless project execution and exceptional user experiences.


  • Extensive expertise in Android development with Java, Kotlin, and Jetpack Compose.
  • Proficient in Kotlin Multiplatform (KMP) for shared business logic across Android & iOS.
  • Proficient in cross-platform development using Flutter.
  • Strong experience deploying apps to Google Play Store and App Store.
  • In-depth knowledge of mobile architecture patterns: MVC, MVVM, BLoC, and Provider.
  • Practical experience with R3 Corda Blockchain integration.
  • Advanced proficiency with version control: GitHub, Bitbucket, GitLab.
  • Skilled in working across operating systems: Linux, Windows, macOS.
  • Excellent communication skills with ability to collaborate or lead teams.
  • Experienced in building apps for Android tablets, mobile devices and Ipad.
  • Specialized in Mobile Banking and Payment Solutions.
  • Specialized in Food Delivery Apps, GPS Tracking, and Geofencing.
  • Proven track record of team management and on-time project delivery.
  • Knowledge of project tracking tools: Slack, Jira, Asana.
  • AI-powered development experience: Gemini CLI, Claude, ChatGPT, Firestudio.

Latest Projects

KFC UAE (United Arab Emirates)

The all new KFC UAE App is the fastest way to order KFC chicken online. Ordering food within a few steps has never been so easy. Pick up the food or get it delivered at your doorstep, have food the way you like. In KFC, we believe in real cooks, freshly-prepared good food and unrelenting quality control. Our aim is to take convenience to a whole new level and want you to have your favorite chicken options sitting at home.

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NEW
Google Play
App Store

Boost App Malaysia

With Boost, pay your bills conveniently with our eWallet without the hassle of using physical cash. Perform prepaid top-ups on the go, and enjoy rewarding cashback! Activate Boost PayLater and enjoy 30 additional days for bill payment or prepaid reload! Get protected with bite-sized insurance plans that offer comprehensive coverage.

project name
NEW
Google Play
App Store

Dwellspring: Reclaim Your Rest(Flutter)

Reclaim your rest with Dwellspring. In today’s world, finding peaceful moments can feel impossible. We provide essential tools for restoration that put a world of soothing sounds at your fingertips. While rest might feel like an elusive dream, it’s closer than you think. You are the source of your serenity. From the creator of the 12 Hour Sound Machine Podcast, sonic-self care is made seamless with Dwellspring. Explore unique sound templates, connect with a supportive community, and create sounds perfect for you. Customize your perfect sound and mix and explore our library of curated soundscapes for a quick and easy relaxation experience. Record and blend expertly crafted sounds with sounds from your environm

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Google Play
App Store

Sikh Diary(Android Native)

Sikh Diary - A Sikh religious app.

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NEW
Google Play

Langaroo +

Welcome to the future of global communication. Imagine being able to chat with anyone, anywhere, in any language! Langaroo lets you connect across the globe in over 130 languages. Beyond typical messaging capabilities, Langaroo is a cross-cultural powerhouse, equipped with innovative tools for seamless interaction.

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NEW

Google Play

App Store
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Hungry Hub

Hungry Hub - Thailand Dining Offer App (Coming with new design and funtionality)

Google Play

Play Store

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Noah

NOAH helps to connect English teachers and language institutions in Korea

Google Play

App Store

Other Projects

Travel Monk

The app provided complete travel solution for all kind of traveller. Some of the main feature of the app are Open platform for users to add, edit and consolidate information in real time about places of interest, activities, adventures, accommodation, transportation and such like. Places organized under different categories based on interests of user like mountains, National parks, Beaches & so on. Themes and cultural based activities such as environment, arts, music, food, etc. Providing the user with a logger to record, store, upload and share their experiences. Connecting the interested users, travelers, travel guides & other service providers with each other. Weekend destinations with routes Providing Travelling Routes and Circuits for road trips (which will be the Unique Selling Proposition) of the product. Festival Tourism. Another feature for couch surfing, co-traveler or travel buddies could be added, hitch hiking Advertisement platform for stakeholders of tourism industry.

Google Play

Astria Digital Library

The Astria Digital Library allows users to access millions of Ebooks, Articles and other academic resources online and offline. Using your institution's login credentials, you will be able to access an array of books, articles and other multimedia to enhance your academic experience.

Google Play

More on GitHub

Work Experience

SR. MOBILE APPLICATION DEVELOPER AND TEAM LEAD - AppInventiv Technologies (April-1 2021- Present)

  • Android Developer.
  • Flutter Developer.
  • Setup App Base Architecture and DB models.
  • Deploying Apps to Play Store and App Store.
  • Team handling and Project handling.
  • Intial project requirement gathering with team.
  • Code review.

SOFTWARE ENGINEER - DEBUT INFOTECH PVT. LTD (2016 -2021)

  • Android Developer Native
  • Flutter Deverloper
  • Blockchain

NATIVE & HYBRID MOBILE APPLICATION DEVELOPER - INITCALL TECHNOLOGIES (2014 -2016)

  • Android Developer Native
  • Hybrid Application Developer

My GitHub