Sonjoy C. Barman
Full Stack Dev building scalable SaaS apps with Next.js
New to Contra
Sonjoy is ready for their next project!
Government-Certified Web Developer 🇧🇩
This certificate from Bangladesh's ICT Division (Learning & Earning Development Project) marks where my professional journey began — 200 hours of focused Web Design & Development training that laid the groundwork for everything I've built since.
Today, with 250+ projects delivered globally, I bring both formal training and real-world expertise to every client I work with.
#WebDevelopment #Certified #DigitalBangladesh #Freelancer
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Another successful client delivery completed with a 5⭐ review.
Building scalable, modern, high-performance web experiences with Next.js, React, MongoDB, AI systems, and SaaS architecture. 🙌
#FullStackDeveloper #NextJS #ReactJS #MongoDB #AI #SaaS #WebDevelopment #Freelancer #Fiverr
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🚀 Just wrapped up Phase 1 of a unique Live Harmony Visualization System for theater performance. 🎭
Grateful to receive such thoughtful feedback from my client — building something beyond a typical web app. This project focuses on a real-time operator + audience system where:
🎤 The audience sees a clean, cinematic performance screen
🎛️ Operator controls everything live (songs, cues, timing)
🎶 Harmony lines (High / Mid / Low) guide group singing in real-time
This is not just a “website” — it’s evolving into a live performance tool for stage use.
💬 Client feedback highlights:
1. Clear communication & fast iteration
2. Strong understanding of complex requirements
3. Solid MVP foundation for scaling further
Now moving into Phase 2:
1. Backend + database system
2. AI-powered lyric & cue generation (Gemini)
3. Advanced operator tools & performance enhancements
If you're working on:
🎵 Music tech
🎭 Live performance systems
🤖 AI-integrated applications
⚡ Real-time interactive platforms
Let’s connect—I'd love to build something impactful together.
#FullStackDevelopment #NextJS #AI #MusicTech #LivePerformance #Startup #WebDevelopment #Freelance #SaaS #OpenToWork 🚀
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FinanceAI – AI-Powered Personal Finance & Expense Tracker
Overview
FinanceAI is a modern full-stack web application designed to help users manage their personal finances more effectively using AI. It combines real-time expense tracking with intelligent financial insights powered by Google’s Gemini 3 Flash model.
Problem
Most expense tracking tools only record transactions but fail to provide actionable insights. Users often struggle to understand their spending behavior and improve their financial habits.
Solution
FinanceAI solves this by integrating AI directly into the financial workflow. The system analyzes user spending patterns and generates personalized insights, budget recommendations, and savings strategies in real time.
Key Features
AI Financial Insights: Generates smart recommendations based on user data
Expense Tracking: Categorized tracking across multiple spending types
Interactive Dashboard: Visual breakdown of expenses using charts
Smart Budgeting: Monthly budget control with overspending alerts
Secure Authentication: JWT-based login with protected sessions
Modern UI/UX: Smooth animations and responsive design
Tech Stack
Frontend: Next.js, React, TypeScript
Backend: Next.js API Routes (serverless architecture)
Database: MongoDB with Mongoose
Authentication: NextAuth.js (JWT, bcryptjs)
AI Integration: Google Gemini 3 Flash API
Visualization: Recharts
Styling & Animation: Tailwind CSS, GSAP
My Role
Designed and developed the full-stack architecture
Integrated AI for real-time financial analysis
Built responsive UI with modern animations
Implemented secure authentication and API structure
Optimized performance and data flow
Outcome
FinanceAI demonstrates how AI can enhance traditional financial tools by transforming raw expense data into meaningful, actionable insights. It highlights my ability to build scalable, AI-driven applications with a strong focus on user experience and clean architecture.
Links
Live Demo: https://web-finance-ai.vercel.app/
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