Building cross-platform Flutter & native Android apps used by real people — with clean architecture, smooth UX, and battle-tested integrations like Dio, Retrofit, Firebase & Google APIs.
I'm Srijan Chakraborty, a Flutter & Android Developer based in Kolkata, India with 3+ years of professional experience crafting mobile applications that are fast, reliable, and delightful to use.
I specialize in Flutter & Dart for cross-platform development (Android + iOS), and Java & Kotlin for native Android, with deep experience in Dio, Retrofit, payment gateways (PhonePe, Razorpay), and the full Firebase ecosystem.
I've built and shipped production apps on Google Play Store, worked on enterprise projects for clients like DP World, and led cross-functional teams — improving system performance by 25% and reducing bugs by 30%.
I hold a B.Tech in Electrical Engineering from MAKAUT, West Bengal — which taught me to think in systems and solve complex problems from first principles.
Digital parenting and family-safety app featuring real-time location tracking, app usage analytics, screen-time limits, content filtering, and remote device locking.
▶ Available on Play StoreA fully API-driven e-commerce Android application built end-to-end as sole developer. Handled full app architecture, UI design, and backend REST API integration.
▶ Available on Play StoreBuilt solo for DP World on a specialized mobile scanner device. Reads barcodes and QR codes with real-time output, optimized specifically for a custom Android OS environment.
▶ Available on Play StoreA logistics tracking app connecting transporters and truck drivers. Tracks the complete cargo journey from loading to unloading via real-time GPS.
▶ Available on Play StoreA form-based healthcare Android application. Developed as sole developer independently handling all UI, logic, and REST API integration at ARISU App Solutions.
▶ Available on Play StoreA Point-of-Sale Android application with integrated PhonePe payment gateway processing, allowing smooth in-app transactions for merchants.
Cross-platform healthcare app for Android and iOS integrating Google Maps API for locations, Firebase real-time database, and Dio for REST API communication.
▶ Available on Play StoreReal-time messaging platform enabling group chats, media sharing, push notifications, and presence tracking. Built using GetX, Firebase Auth, and Google Sign-In.
▶ Available on Play StoreProvided support and active development for TradeMert BD. Contributed to bug fixes, feature enhancements, and performance improvements.
▶ Available on Play StoreSupported Rapid CricketLine — a live cricket score and updates platform. Optimized data polling and streaming performance.
▶ Available on Play StoreSchool digital attendance app for teachers, parents, and students. Integrated secure login, history tracking, and student reports.
▶ Available on Play StoreLive video streaming platform with Agora SDK and Socket.IO for low-latency broadcasts, real-time chat, and virtual gifting.
▶ Available on Play StoreCompanion app for remote controlling connected medical and fitness devices over Bluetooth and Wi-Fi communication protocols.
▶ Available on Play StoreOnline pharmacy platform enabling users to order medicine, upload prescriptions, browse catalogs, and track delivery in real time.
▶ Available on Play StoreOpen to full-time roles, freelance Android/Flutter projects, and remote work worldwide. Based in Kolkata, West Bengal.
Or email directly: srijan833shakraborty@gmail.com