Sinjan Chakraborty

This is a archiving solution to manage media, documents in AWS S3 Bucket. This project was for Vedanta Society. In this project I was alone developer. I worked in Codeigniter 3 with MVC Concept. I used AWS apito manage. This project has two parts. One is admin and another is public facing site with subscription. For subscription and payment, I implemented razorpay. For the frontend purpose I used HTML, bootstrap, ajax, jQuery. I used MySQL in this project

This project was made for Saaathealth. In this project, I was a team member and handled backend alone. I made the backend admin part using laravel and livewire. In backend, admin can create product, mang product, order, order processing, coupon, discounts, users, staff, staff permissions, export or import users, coupon codes etc. In this project, there are different ways of login. User/Admin can login using Google sign in, OTP login, email password login. I handled the OTP using twilo api. There was a feature for admin to enable two factor authentication. I created CMS multilingual. There is self assessment module, it is also multilingual. In this project PostgreSQL was used. The frontend was made in React. Which was made by my team mate, but the REST API was made by me. The api is in Laravel 10. I used JWT for authentication purpose. In this project most important and challenging part was over 1.5 lakh users and user data migration. This migration was from MySQL to PostgreSQL. I completed this using laravel api code using pagination concept successfully.

This project was a product of my first company TCM. This helps to make WhatsApp campaign, bot with admin UI to manage, bot mesage along with the message flow in bot. This was in version 1.0 which was made in Codeigniter 3 and MySQL. I started to modify the system by migrating from Codeigniter 3 to Laravel 10 and MySQL to PostgreSQL db migration. After that I implemented campaign template making UI for WhatsApp campaign, implemented schedule campaign, implemented campaign report. Along with this I implemented the Zoho Campaign. Zoho Campaign was used for email campaign. These implementations was made using WhatsApp Meta API and Zoho API.

This project was for RKM. In this project, I made CMS with multiple image, video and audio files. I used AWS S3 Bucket to manage media files and made REST API also. This project was in Laravel 10 and PostgreSQL

This project was for a client. This helps USA students to get admission in most suitable, appropriate and likable university. This site will provide this service in subscription model. If any student get subscription, then that user can make list their own likable universities and can track applications for that universities also. Student can easily track eligibility, trending. Student can filter college by community, horoscopic, by race, by area and many more. Student can view climate conditions, geopolitical conditions, temperature conditions and many more. I was a part of this project. This project was made in Laravel 10 and livewire and MySQL. I implemented few parts of admin. I implemented stripe payment gateway with stripe subscription model.

This project was in Node js, .NET, csv and PostgreSQL. This was only for CRUD of raw data and along with this there was data analysis. The data analysis part  was made in .NET which was made by my team mate. I made node js api with express to manage crud and to fetch report and data. The frontend was in React which was made by my another team mate.

This project is to manage IOLTA Trust Accounts in USA. In this project there is three part: 1) Super Admin, 2)Admin, 3) User This provides service on subscription model. If any user takes subscription, then that user will be treated as admin, means the Attorney is the admin. If that user adds staff or any other the they will be treated as user. Admin can create role and can manage permissions role wise. Super admin can manage admin and their subscriptions. Admin can manage users, trust accounts which are only added by self, journals, ledgers. User can access journals, bank statements, ledgers, reports, outstandings, lines, reconciliation as per role permissions I was team member in this project. This project is in Node.js express backend, React frontend and MySQL database. I handled backend api totally and made the super admin frontend.

This project is basically an CAD web application. This is to design interior. In this project I am a team member. I handled 2D drawing, in 3D textures, flooring wall colours. I implemented svg to layers conversion and displaying in canvas. This svg layers can be edited also. This project made in react js using three.js

1. Designed and developed scalable web solutions using PHP, Laravel, CodeIgniter, Python (Django), and Node.js to meet client requirements. 2. Managed and optimized databases, including MySQL, PostgreSQL, and Elastic DB, for high-performance applications. 3. Provided ongoing support for existing projects by debugging issues and implementing change requests. 4. Built and deployed WhatsApp Bot v2.0 using Laravel, PostgreSQL, and Meta API, enhancing customer communication and automation. 5. Led intern and junior developer training in PHP and Laravel, fostering skill development and improving team productivity. 6. Reported directly to the Project Manager, ensuring efficient project execution and timely deliveries. 7. Worked with Amazon AWS S3 Bucket for archiving solution and implemented Zoho API to manage inventory

1. Developed custom web solutions using PHP, Laravel, and MySQL based on client requirements. 2. Maintained and optimized MySQL databases to ensure efficiency and performance. 3. Provided ongoing support for existing projects by troubleshooting bugs and implementing change requests. 4. Collaborated with the Project Manager to ensure timely delivery of high-quality web applications.

As a PHP Developer at Yes IT Labs, a service-based software development company, I work across a broad tech stack including PHP, Laravel, Node.js, React, MySQL, and PostgreSQL. My role involves full-cycle project development — from understanding client requirements and business logic to developing scalable and maintainable solutions. I focus on both backend and frontend development, RESTful API development and integration, and maintaining high standards of code quality and performance. Key Responsibilities: 1. Develop and maintain web applications using PHP, Laravel, and Node.js. 2. Build dynamic frontend components using React.js. 3. Design and optimize relational databases (MySQL). 4. Develop and integrate RESTful APIs for third-party services. 5. Understand client requirements and translate them into technical solutions. 6. Maintain clean, efficient, and reusable code following best practices. Collaborate with cross-functional teams to deliver high-quality software on time.