Building Scalable SaaS & AI-Powered Applications with Flutter

Senior Flutter & Scalable Systems Architect specializing in multi-tenant SaaS, AI-integrated systems, and production-scale applications.

Beyond Code:
Architecting Solutions

With over 6 years of experience, I specialize in building high-performance, scalable systems. My focus isn't just on writing code—it's on engineering robust architectures that can handle complex data flows, multi-tenant environments, and thousands of concurrent users.

I've architected large-scale SaaS platforms, designed seamless multi-tenant systems, and integrated cutting-edge AI & RAG workflows into production applications. From Flutter frontends to Supabase/Node.js backends, I ensure every layer of the stack is optimized for speed and scalability.

"I don't just build apps. I design systems."

Sujit Chanda - Senior Flutter & Scalable Systems Architect

Core Expertise

Flutter Architecture

  • Clean Architecture
  • Riverpod State Management
  • Scalable Codebases
  • Cross-platform Systems

SaaS Engineering

  • Multi-tenant Architecture
  • Subscription Models
  • Admin Dashboards
  • Analytics Systems

Backend & Infrastructure

  • Supabase & Firebase
  • Node.js APIs
  • Authentication Systems
  • Cloud Integrations

AI & Advanced Systems

  • RAG Architecture
  • Vector Embeddings
  • AI Tutor Systems
  • Data-driven Workflows

Featured Projects

A selection of scalable systems and applications engineered for performance and growth.

Multi-tenant SaaS

Lentor

E-learning platform with AI tutor, video storage, subscriptions, and analytics.

Scaled to 1000+ concurrent users with sub-second video latency.

SupabaseAIFlutterVideo Streaming
EdTech Platform

Art of Winning

Single-tenant e-learning platform serving 10,000+ students with robust data handling.

Reduced infrastructure costs by 40% via optimized caching.

FlutterLarge ScaleOptimization
AI System

Full RAG Application

Vector-based AI retrieval system for intelligent document interaction.

Achieved 95% retrieval accuracy for domain-specific queries.

RAGVector DBSupabaseLLMs
Marketplace

Multi-vendor Restaurant App

Complex system with driver dispatching, real-time order management, and live tracking.

Processed 500+ daily orders with zero downtime during peak hours.

FirebaseReal-timeGeolocation
Enterprise SaaS

Hotel Management System

End-to-end operations control, admin management dashboards, and booking engines.

Automated 70% of manual administrative tasks.

Admin PanelsDashboardComplex State
Utility SaaS

OptiPress

Client-side image optimization utility built with zero server uploads for privacy.

Compressed 1TB+ of images completely client-side.

Client-side ProcessingPerformance
Health & Fitness

Breath Pro

Health & fitness tracking application with sophisticated data visualization.

Featured in App Store Health category for UX excellence.

HealthKitData VizFlutter
Social

Anonymous Chat App

Real-time matching system ensuring anonymity and low-latency communication.

Supported 50k+ daily active messages with <50ms latency.

FirebaseWebSocketsSecurity

How I Build Systems

Great software isn't just written; it's engineered. My process ensures that every application is built to last, scale, and perform.

Problem Breakdown

Deconstructing complex requirements into manageable components.

Architecture Planning

Selecting the right stack and patterns for scalability.

Database Design

Ensuring data integrity and efficient query performance.

Scalability Planning

Preparing the system for user growth and high load.

Performance Optimization

Fine-tuning every layer for speed and responsiveness.

Deployment Strategy

CI/CD pipelines and robust production environments.

Technical Arsenal

A comprehensive toolkit architected for speed, scalability, and seamless user experiences.

Flutter

Multi-platform Architecture

Dart

Type-safe Scalability

Supabase

Real-time Infrastructure

PostgreSQL

Complex Data Modeling

RAG Systems

Vector Context Retrieval

AI Integration

LLM & Vector Embeddings

Cloudflare

Edge Computing & Security

Node.js

Scalable Microservices

Riverpod

Reactive State Management

Let’s Build Something Scalable.

If you're building a SaaS, AI product, or large-scale Flutter application, let’s talk.

Schedule a Call