AB
Arunava Banerjee
Full-StackDeveloper·ProblemSolver
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Portfolio · 2026

Hi, I'm Arunava

Full-Stack Developer & Problem Solver building fast, scalable, and intuitive web applications

Arunava Banerjee

About

I’m a Full-Stack Developer who loves building fast, reliable, and visually refined web applications. My focus lies in crafting scalable solutions with a seamless balance between performance and design.

On the frontend, I work extensively with React, Next.js, and Tailwind CSS to build modern, responsive interfaces that deliver smooth user experiences. On the backend, I design and develop APIs using Node.js, Express, and MongoDB, ensuring efficiency, scalability, and clean architecture.

Professional Experience

Hands-on industry experience building and validating enterprise-grade applications in professional environments.

IBM

Associate System Engineer

Pune, India (On Site)
Nov 2025 – PresentCurrent
  • Working on a mortgage lending application across Intermediary and Employee platforms, validating end-to-end financial workflows including loan origination and application submission.
  • Engineered a skill-driven AI automation using GitHub Copilot CLI and Claude, where custom skills orchestrate tool calls to parse PDF, Excel, and CSV test documents and automatically generate and upload Zephyr-compatible test cases via APIs, adopted by 20+ team members and reducing manual processing time by 87% (45 min → 5–6 min per 30 test cases).
  • Executed BAU testing post each release cycle to validate critical mortgage workflows.
  • Maintained smoke and regression test suites using Selenium with BDD Cucumber for functional stability validation.
  • Monitored automated test runs within CI/CD pipelines to support continuous build validation and early defect detection.
  • Analyzed application behavior to identify defects and collaborated with developers for timely resolution.
  • Contributed to test planning using multiple testing techniques to improve coverage and release quality.
SeleniumBDD CucumberCI/CDBAU TestingRegression TestingGitHub Copilot CLIClaude

Education

Narula Institute of Technology, West Bengal

Bachelor of Technology - B.Tech (Computer Science and Engineering)

Grade 8.48 CGPA
2021 - 2025

Burdwan C.M.S High School, West Bengal

WBCHSE (XII) - PCMB

Grade 86%
2019 - 2021

Debipur Adarsha High School, West Bengal

WBBSE (X) - Secondary Education

Grade 88%
2018 - 2019

Skills

My core technical skills and tools gained through projects and practice

Frontend & UI

HTMLHTMLCSSCSSJavaScriptJavaScriptReact JSReact JSNext JSNext JSTailwind CSSTailwind CSSShadCNShadCNFramer MotionFramer Motion

Backend & Database

Node JSNode JSExpress JSExpress JSPrisma ORMPrisma ORMPostgreSQLPostgreSQLSupabaseSupabaseNeon DBNeon DBMongoDBMongoDBRedisRedisJWTJWT

AI

RAGLLMMCPMCPGenerative AIAgentic AI

Testing

SeleniumSeleniumTestNGCucumberCucumberRest AssuredRest AssuredJMeter

Languages

CCC++C++JavaJavaJavaScriptJavaScriptTypeScriptTypeScriptSQLSQL

Tools

GitGitGitHubGitHubVS CodeVS CodePostmanPostmanCompassCompassVercelVercelNetlifyNetlify

Projects

A showcase of production-ready web apps, AI frameworks, and distributed system architectures.

PrepMate

A full-stack learning platform covering 10+ CS subjects with 50+ questions each, actively used by peers for interview and mock prep. Features JWT-based authentication, role-based access control, Redis caching for faster APIs, rich Markdown rendering, and personalized progress tracking.

REACTTAILWIND CSSSHADCN UINODE.JSEXPRESSPRISMAPOSTGRESQLREDIS
Live projectSource
SourceMind

SourceMind

A RAG pipeline for a multi-source knowledge base spanning PDFs, YouTube transcripts, and web pages, built on pgvector to minimize infra overhead while keeping retrieval latency low. Features an interactive citation system linking every AI-generated claim to its exact source excerpt in a split-screen viewer, plus modular AI Studio generators (Vercel AI SDK, GPT-4o) that produce 3D flashcards, quizzes, and executive summaries, with custom rate-limiting to protect OpenAI usage.

NEXT.JSTYPESCRIPTPOSTGRESQLPGVECTORDRIZZLE ORMOPENAITAILWIND CSS

QuizMaster

A modern, full-stack quiz platform built with Next.js, TypeScript, and MongoDB — offering real-time quiz experiences, progress tracking, and time-based submissions.

NEXT.JSTYPESCRIPTTAILWIND CSSSHADCN UIMONGODBCLERK
Live projectSource

Rabbit SDK

A type-safe, provider-agnostic framework for building production-grade AI agents in TypeScript. Features strict type safety, automatic JSON schema conversion, conversational memory, provider fallback chains, built-in safety guardrails, and streaming support.

TYPESCRIPTNODE.JSZODLLMOPENAIGROQGEMINI AIANTHROPIC
Live projectSource

Taskify

A full-stack collaborative task management platform designed to help users and teams stay productive, organized, and efficient. It allows you to create, manage, and track tasks — either individually or collaboratively across users. From simple personal to-do lists to complex project workflows.

REACTTYPESCRIPTTAILWIND CSSSHADCN UINODE.JSEXPRESSMONGODBCLERK
Live projectSource

Want to see more projects and experiments?

Explore More on GitHub

Competitive Programming & Achievements

A summary of my competitive programming journey — from platforms I regularly participate in to major milestones achieved through consistent practice and contests.

LeetCode

LeetCode Knight (Top 3% Globally)

Solved 1100+ problems, achieved a rating of 1985 (Knight), and ranked 834/35,585 in Weekly Contest 401. Strengthened problem-solving and algorithmic skills through consistent participation.

Codeforces

Codeforces Pupil

Peak rating of 1331 (Pupil). Regular participation in contests helped sharpen competitive programming and analytical thinking.

CodeChef

3★ Rating

Achieved peak rating of 1653 (3★). Secured global rank 570 in TCS CodeVita Season 11 and 135/4000 in September Long 2022 Division 3.

GeeksforGeeks

Problem Solver

Solved 500+ problems, building a strong foundation in Data Structures and Algorithms.

Codolio

Coding Portfolio

Showcases competitive programming achievements and project portfolio in one place.

Major Achievements

TCS CodeVita Season 11

2023

Secured global rank 570 among thousands of participants worldwide.

ICPC Preliminary

2022

Participated in ICPC prelims, gaining valuable experience in team-based competitive programming.

Contact

Get in Touch

Whether you have a question, want to collaborate, or just want to say hello - feel free to reach out! I’m always open to discussing new ideas and opportunities.