Full-Stack Engineer | React, Next.js, Node.js & AWS Expert

Hello! I am Bratamalya Das Gupta, a Full Stack Developer with over 2 years of experience specializing in building scalable, high-performance web applications. I help businesses and startups transform their ideas into production-ready platforms using modern technologies like React, Next.js, Node.js, and AWS. Whether you need an optimized e-commerce platform capable of handling over 10K monthly active users, a lightning-fast user interface, or a secure RESTful API backend, I deliver clean, maintainable, and industry-standard code.

Services I Offer include the following.

1. Full-Stack Web Application Development:
End-to-End Development: Building responsive, production-ready web platforms from scratch using modern frameworks.
E-Commerce Solutions: Designing robust storefronts featuring secure user authentication (JWT), complex cart logic, inventory management, and real-time tracking.
Database Architecture: Engineering efficient data models using relational and non-relational databases like MongoDB, PostgreSQL, and MySQL.

2. Frontend Engineering & Performance Optimization
Modular Architecture: Developing reusable, clean, and modular React/Next.js components to streamline your frontend workflows.
Speed Optimization: Cutting page load times significantly (e.g., from 5s down to 2.3s) through asynchronous rendering and targeted performance profiling to drop bounce rates.
Responsive UI/UX: Transforming UI designs into highly responsive, interactive layouts using Tailwind CSS, Bootstrap, and HTML5/CSS3.

3. Backend Engineering & API Integration
API Design & Tuning: Building secure, scalable RESTful APIs with Node.js, Express, and FastAPI, optimized to cut server response times by up to 40%.
Secure Payment Integrations: Implementing smooth checkout experiences using the Stripe API.
Automated Workflows: Integrating third-party communication tools like Brevo for automated OTP and email verification.

4. Cloud Infrastructure & Mobile Solutions
AWS Cloud Management: Deploying applications on AWS EC2 and optimizing AWS S3 configurations to reduce cloud storage expenses by up to 20%.
Cross-Platform Mobile Apps: Developing and supporting cross-platform mobile applications using React Native and Firebase integration.

Technical Expertise
Frontend: React.js, Next.js, React Native, JavaScript, HTML5, CSS3, Tailwind CSS, Bootstrap.
Backend: Node.js, Express, FastAPI, MongoDB, MySQL, PostgreSQL, JWT.
Dev Tools & Cloud: AWS (EC2, S3), Firebase, Git/GitHub, Postman, REST APIs.
Methodologies: Agile/Scrum, API Integration, Unit Testing, Code Reviews.

Why Work With Me?
Proven Scale: I have engineered platforms that scale effectively to support 10K+ active users.
Cost-Efficient Mindset: I focus on minimizing your operational overhead, having previously saved 20% on cloud storage bills via strategic resource management.
Quality Assurance: I emphasize high automated test coverage (achieving up to 85% using Postman) and adhere to strict CI/CD practices.

Let's collaborate to bring your next web project to life. Send a message to discuss your requirements!