Prasun

A Full-Stack Developer

I'm focused on building scalable full-stack applications while learning cloud, devops technologies.

Springboot | MERN | PostgreSQL | Cloud | DevOps

About

Hey, I'm Prasun Roy.

< Springboot | MERN | PostgreSQL | Cloud | DevOps />

Senior Software Engineer at Fleapo with 2+ years of experience in backend and full-stack development. Skilled in Spring Boot, Java, Kotlin, NestJS, PostgreSQL, and cloud platforms GCP, AWS, and Azure. Strong focus on scalable system design, clean architecture, and production-ready APIs. Experienced in building and maintaining cloud-native applications end-to-end. As a freelancer and consultant, I help startups and businesses design, prototype, and implement reliable software solutions. I assist with architecture decisions, backend/frontend development, cloud setup, and performance optimization. Ideal for MVPs, system refactoring, or technical consultation. Open to collaborations and implementation work.

Notable Skills: Springboot, NestJS, Java, NextJs, PostgreSQL, AWS

Experience

Sr. Software Engineer - Fleapo Co.

Dec 2024 - Present

  • Designed and developed scalable backend services using Spring Boot, Java, Kotlin, and PostgreSQL.
  • Built enterprise white-label solutions including dynamic themes, logos, and favicons, powering 1M+ live users.
  • Worked extensively with GCP, for deployment, monitoring, and infrastructure optimization.
  • Recognized with Excellent Performer Award within 3 months for consistent delivery and ownership.
  • Mentored junior developers and reviewed code to maintain high engineering standards.

Full Stack Developer - Fleapo Co.

Nov 2023 - Dec 2024

  • Built and maintained full-stack features using NestJS, PostgreSQL, GCP and modern frontend frameworks.
  • Designed and implemented a custom form builder with type-safe dynamic mapping and scalable data storage.
  • Awarded Star of the Month within the first month for delivering beyond role expectations.
  • Solved third-party integrations (Stripe, Twilio, DocuSign, JotForm) by building custom wrappers, reducing delivery timelines from months to days.

Education

MAKAUT - B.Tech, Computer Science & Engineering

Siliguri Institute of Technology, Siliguri (2020 - 2024)

Secured 9.13 CGPA

WBCHSE - Board, PCM + Biology

Tarai Tarapada Adarsha Vidyalaya, Siliguri (2018 - 2020)

Secured 88%

WBBSE - Board

Sarada Vidya Mandir, Jalpaiguri (2012 - 2018)

Secured 93%

Technical Skills

  • Languages: Java, Kotlin, Javascript, Typescript, Python
  • Web Development: HTML5, CSS3, Javascript, Node Js, Express Js, React, Tailwind CSS, Web3
  • Databases: MySQL, PostgreSQL, MongoDB, Redis
  • Frameworks: Springboot, Nestjs, NextJS, Qt5, Truffle
  • Tools: Kubernetes, Docker, Shell Scripting, RabbitMQ, AWS, Azure, Ansible, Terraform, CMake

Projects

PostgreSQL Load Balancer

Developed a containerized PostgreSQL load balancer ensuring strong consistency by routing traffic only to safe replicas. Designed for transaction-sensitive, distributed database environments.

Technologies: PostgreSQL, Docker, Bitnami PG-Pool

TagMango - Creator Economy Platform

Creator-focused white-label platform serving 30M+ active users, used by leading Indian YouTubers.

Technologies: Next.js, NestJS, PostgreSQL, Redis, AWS, Docker

Resort Booking & Supply Chain Platform

Global booking platform handling 2M+ daily reservations and 500K+ orders. Built Airbnb-style search, booking flows, cashdesk, supply chain, and tax systems. Implemented multi-currency support, PostgreSQL sharding, frontend caching, and custom npm packages.

Technologies: Spring Boot, Kotlin, NestJS, Next.js, React Native, PostgreSQL, GCP

US Tax Filing & Financial SaaS

Financial SaaS platform processing 1M+ records via RabbitMQ-based batch systems. Implemented role-based access, AI chatbot, cost estimation, and appointment scheduling. Integrated Stripe billing, Twilio SMS (bulk + two-way), and DocuSign through custom wrappers.

Technologies: Next.js, NestJS, PostgreSQL, RabbitMQ, GCP, Stripe, Twilio, DocuSign

Social & Maps Platform

Migrated native iOS Swift application to React Native. Optimized geospatial queries using Google Maps, implemented map tiling, contact sync, TikTok integration, and Google crawler support.

Technologies: React Native, Node.js, Google Maps API

Creator Community Platform

Creator-focused community platform supporting live streaming and content feeds for 15M+ creators.

Technologies: Next.js, Tailwind CSS, ShadCN, MUI

Certifications

Contact & Socials