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chandan0000/README.md

Chandan Kumar

Flutter Engineer | FastAPI & Python Backend Developer

3.5+ years building production mobile applications and scalable backend systems

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About Me

I am a Flutter-focused Software Engineer with 3.5+ years of experience building and shipping production applications across fintech, fleet management, education, rentals, and delivery platforms.

  • Primary focus: Flutter, Dart, BLoC, Riverpod, Provider, Firebase, REST APIs, and clean architecture
  • Backend expertise: FastAPI, Python, PostgreSQL, SQLAlchemy, Redis, Celery, and WebSocket
  • Product ownership: mobile UI, API integration, backend services, real-time features, performance, and releases
  • Current impact: contributing to a fintech lending platform with 2M+ installs and 800K monthly active users
  • Open to: Flutter Engineer, Mobile Application Developer, and Flutter + FastAPI roles in Delhi NCR or remote

Engineering Impact

Outcome Result
Fintech product reach 2M+ installs / 800K MAU
Flutter products shipped 4 production applications
Mobile performance improvement 40% faster load times
Fleet operations automation 70% less manual effort

Technical Toolkit

Mobile

Flutter Dart BLoC Riverpod Provider Firebase Android iOS

Backend and Data

FastAPI Python PostgreSQL SQLAlchemy Redis Celery WebSocket

Tools and Delivery

Git Docker GitHub Actions Razorpay Google Maps

Selected Engineering Work

Product Contribution Core Stack
SwipeLoan Fintech lending marketplace, paperless KYC, Razorpay payments, real-time loan tracking, and mobile performance optimization Flutter, Dart, BLoC, Firebase, REST APIs
Fleet Operations Platform Shipped four mobile applications for owners, drivers, rentals, and delivery scheduling; reduced manual operations by 70% Flutter, FastAPI, PostgreSQL, SQLAlchemy, Redis, Celery
Notification Microservice Event-driven delivery routing between active WebSocket sessions and FCM, with rate limiting and background workers FastAPI, Redis, Celery, WebSocket, FCM
Education Applications Built production apps for class scheduling, progress tracking, assignments, notifications, and Play Store delivery Flutter, BLoC, Firebase, REST APIs

How I Build Products

flowchart LR
  Mobile["Flutter & Dart"] --> State["BLoC / Riverpod"]
  State --> API["FastAPI Services"]
  API --> DB[("PostgreSQL")]
  API --> Async["Redis + Celery"]
  API --> Realtime["WebSocket + FCM"]
  API --> Integrations["Razorpay + Google Maps"]
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What I Care About

  • Maintainable Flutter architecture and predictable state management
  • Smooth performance on real-world and low-end Android devices
  • Reliable APIs, background processing, and real-time communication
  • Clear ownership from mobile experience to production backend
  • Practical engineering decisions that improve product and operational outcomes

GitHub Activity

Chandan Kumar's contribution activity graph

Chandan Kumar's GitHub stats Chandan Kumar's GitHub streak


Building polished Flutter experiences with dependable FastAPI backends.
LinkedIn · Email · Repositories

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