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Available for Backend Roles

Asit Kumar

Backend Developer

Building scalable backend systems, APIs, and real-time applications.

LinkedIn GitHub

System Online | uptime 0s | FastAPI · Node.js · PostgreSQL | Playground ↗

Projects // 4 builds

01 / 04

AI-Powered Internship Recommendation Platform

AI · Full-Stack

Overview

Full-stack internship management platform with AI-driven resume parsing, skill extraction, and TF-IDF cosine similarity matching. Secure RESTful API backend with RBAC across student, company, and admin roles. Designed for scalable internship lifecycle management and automated recommendation pipelines.

Architecture Highlights

🧠

TF-IDF Engine

🔒

RBAC Auth

📄

Resume Parser

🗄️

PostgreSQL

⚡

FastAPI

🌐

Next.js UI

Tech Stack

FastAPINext.jsTypeScriptPostgreSQLSQLAlchemyJWTRBACScikit-learnTailwind CSS

Key Backend Features

TF-IDF vectorization + cosine similarity scoring for internship matching
JWT authentication with RBAC for 3 isolated user roles
Async FastAPI endpoints with SQLAlchemy ORM and Alembic migrations
Resume parsing pipeline with skill extraction and normalization

⇗ GitHub View Project

02 / 04

Smart Food Waste Reduction Platform

Backend · Real-Time

Overview

Scalable food donation platform connecting donors and recipients via geospatial matching, real-time donation tracking, and Redis-cached hot data paths. Full JWT + RBAC system for donors, recipients, and admins with Socket.io event-driven updates.

Architecture Highlights

📍

Geospatial API

⚡

Redis Cache

💬

Socket.io RT

🗄️

MongoDB

🔒

JWT / RBAC

⚛️

React.js UI

Tech Stack

Node.jsExpress.jsMongoDBRedisSocket.ioJWTRBACReact.js

Key Backend Features

Geospatial indexing in MongoDB for efficient nearby-donor queries
Redis TTL caching strategy with real-time cache invalidation
Socket.io rooms for isolated donor-recipient session events
Role-based middleware separating donor, recipient, and admin APIs

⇗ GitHub View Project

03 / 04

EchoSphere — Real-Time Chat Application

Real-Time · Live

Overview

Production-grade real-time messaging platform with bidirectional Socket.io events, OAuth 2.0 social login, and JWT session management. Secure Express.js API layer with input validation, rate limiting, and scalable message delivery architecture. Fully deployed and live.

Architecture Highlights

💬

Socket.io

🔑

OAuth 2.0

🗄️

MongoDB

🔒

JWT Auth

⚡

Express.js

🟢

Live Deployed

Tech Stack

Node.jsExpress.jsMongoDBSocket.ioOAuth 2.0JWTReact.js

Key Backend Features

Bidirectional WebSocket events with graceful reconnect and room isolation
OAuth 2.0 token exchange securely bridged to JWT session lifecycle
Message deduplication and ordering guarantees under concurrent load
Rate-limited REST API endpoints with input sanitization middleware

⇗ GitHub 🔗 Live Demo

04 / 04

Face Recognition System

Computer Vision · Python

Overview

Real-time face recognition system using Python, OpenCV, and dlib face embeddings for live webcam identity detection. Implements face encoding extraction, nearest-match recognition, confidence scoring, and UI overlays. Optional DeepFace integration for AI-based age estimation workflows.

Architecture Highlights

📷

Live Webcam

🧬

Face Embeddings

🎯

Confidence Score

👁️

dlib Detector

🤖

DeepFace AI

⚠️

Error Handling

Tech Stack

PythonOpenCVdlibface_recognitionDeepFaceNumPy

Key Backend Features

Real-time face encoding at 30fps with multi-face tracking
Nearest-match algorithm using Euclidean distance on 128-d embeddings
Defensive error handling for missing images, low-light, and unknown faces
Optional async DeepFace age estimation without blocking main loop

⇗ GitHub

Skills // 15+ technologies

Backend-focused engineering stack built through real-world APIs, scalable systems, real-time applications, cloud integrations, and AI-powered workflows.

Backend Engineering 7 skills

Python FastAPI Node.js Express.js REST APIs Socket.io Microservices

Databases 4 skills

PostgreSQL MongoDB Redis MySQL

Auth & Security 4 skills

JWT RBAC OAuth 2.0 Session Management

AI & Intelligent Systems 9 skills

RAG Vector Databases Scikit-learn TF-IDF Cosine Similarity OpenCV dlib DeepFace Resume Parsing

Frontend 4 skills

React.js TypeScript HTML CSS

DevOps & Tools 7 skills

Docker Git GitHub Linux AWS S3 Postman CI/CD

Languages 5 skills

Python JavaScript TypeScript SQL Java

Experience // 2 positions

Backend engineering roles focused on API design, authentication, and database optimization.

Backend Developer Trainee

Knowledge Excel Pvt Ltd

Mar 2026 — Present

Building RESTful APIs using Python FastAPI with async patterns
PostgreSQL schema optimization, indexing, and query performance tuning
JWT authentication and secure session workflow implementation
AWS S3 integration and RAG-based AI workflow exploration
Agile collaboration with Git-based version control and code reviews

Backend Developer Intern

Webapphealing Technology Pvt. Ltd.

Dec 2024 — Feb 2025

Built 12+ RESTful API endpoints using Node.js and Express.js
Implemented JWT authentication and role-based access control
Developed reusable middleware layers and backend validation pipelines
Improved API request handling performance and response consistency

Education

Bachelor of Technology (B.Tech) in Computer Science & Engineering

Dr. A.P.J. Abdul Kalam Technical University

2022 — 2026 Graduated CGPA 7.7 / 10

Profiles // coding activity

Consistent DSA practice and backend certifications across major platforms.

200+LeetCode

120+GFG

3+Certifications

Contact // let's connect

Open to Backend, SDE-1 & Internship Opportunities

Let's connect across platforms — coding, collaboration, networking, and building real-world systems.

Professional Network

GitHub

Projects & Code

GFG

GeeksforGeeks

DSA & Problem Solving

Instagram

Personal & Creative

Email

Direct Communication

LeetCode

Competitive Coding