SYSTEM/BOOTv1.0

Welcome

Sudhanshu Singh

Running on SudhanshuOS

Software Engineer | Backend Developer | AI Enthusiast

about

"Building scalable backend systems and AI-powered applications."

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Overview

Skills

Skills & Technologies

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Backend

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Java

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Spring Boot

Hibernate

JPA

APIs

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REST

GraphQL

JWT

Microservices

FastAPI

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LLM Integration

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OpenAI

OpenRouter

LangChain

AI Agents

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Agent Architecture

RAG

Prompt Engineering

Programming

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Java

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OOP

DSA

Python

C++

JavaScript

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TypeScript

Infrastructure

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Docker

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Docker Compose

Containerization

Linux

Git

AWS

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Personalize

Kinesis

Lambda

SQS

SNS

EC2

CI/CD

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GitHub Actions

Frontend

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React

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Next.js

Framer Motion

Tailwind CSS

Three.js

Projects

Project Archive

Backend

Wallet-Based Payment Gateway System

Completed

Created a Java Spring Boot microservices system with an API Gateway handling routing, authentication, and rate limiting, backed by User, Wallet, Transaction, Reward, and Notification services. Implemented secure REST APIs using Spring Security with stateless access control across services. Executed a SAGA-based transactional money flow with holds, capture, release, refunds, and compensating actions to handle failures and maintain data consistency. Integrated asynchronous communication using Kafka for event-driven workflows.

JavaSpring BootKafkaRedis+2

Legendary

Backend

Hospital Management System

Completed

Created an end-to-end hospital management system with CRUD functionalities and proper role-based access controls.

Node.jsExpress.jsMongoDBJWT

Medium

Sensai

Completed

An AI career coach that helps users upskill in a selected domain. Provides quizzes with answer explanations, identifies areas to improve, enables resume and cover letter creation and editing, and delivers salary trends and market insights updated every 7 days.

Next.jsInngestGemini APIClerk+1

Hard

Assessly

Completed

Built a full-stack AI chatbot generator using Next.js and Gemini AI, enabling users to design, customize, and integrate context-aware chatbots into third-party websites via shareable links. Engineered a secure, multi-tenant architecture for seamless third-party website integration.

Next.jsGemini AIClerkTypeScript+1

Hard

Boltt

Completed

An AI-powered SaaS that builds websites using natural language prompts.

Next.jsStripeGemini AITypeScript+1

Hard

Full Stack

Learning Management System

Completed

A full-stack application with role-based access controls where instructors can perform CRUD operations on courses and students can purchase courses. Integrated analytics for tracking course performance.

Node.jsReact.jsMongoDBExpress.js+1

Hard

Full Stack

Chat Application

Completed

Built a real-time chat application using WebSockets in Node.js with a React frontend.

Node.jsReact.jsSocket.ioExpress.js

Medium

Frontend

Code Editor

Completed

A React-based code editor for HTML, CSS, and JavaScript with live linting and preview.

React.jsJavaScriptCSSHTML

Medium

Achievements

Click an achievement to learn more

LeetCode Knight

Consistent problem solving across algorithms and data structures. Solved 700+ problems with active contest participation.

2024

CodeChef 3 Star

Ranked programming performance in timed contests with consistent Division 2 and Division 3 performances.

2024

NPTEL Top 2%

Placed in the top 2 percentile nationally for the NPTEL certification in Python course.

2023

District Topper

Academic excellence milestone unlocked during school journey with 98% in CBSE Class 10 board examinations.

2019

Codeforces Specialist

Achieved Specialist rating on Codeforces through consistent contest participation and problem solving.

2025

100+ Contributions

Active open-source presence with 100+ contributions across repositories on GitHub.

2025

Coding Profiles

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Sudhanshu Singh

Coding Profiles

6 platforms connected

Experience

Experience Timeline

Sept 2025 — Present

Software Engineer

Bellpost

Engineer scalable backend systems and AI-driven pipelines for enterprise applications at Bellpost.

Contact Acquisition PipelineAI Content GenerationPayment IntegrationsSearch Infrastructure

Mar 2025 — Sept 2025

Software Engineering Intern

Bellpost

Developed high-throughput event ingestion pipelines and AI-powered recommendation systems.

Event IngestionRecommendation EngineREST API DevelopmentPerformance Optimization

Education

2021 — 2025

B.Tech in Electronics & Communication Engineering

National Institute of Technology Patna

CGPA 8.37 / 10

NPTEL Top 2%

Highlights

Active in coding eventsBuilt full-stack projectsCompetitive programming enthusiast

2021 — 2025

B.Tech in Electronics & Communication Engineering

National Institute of Technology Patna

CGPA 8.37 / 10

NPTEL Top 2%

Highlights

Active in coding eventsBuilt full-stack projectsCompetitive programming enthusiast

2021

Intermediate (XII) — CBSE

B.L. Indo Anglian Public School

94.2% — School Topper

School Topper Best Student Award

Highlights

Science streamComputer Science focusTopped the school

2021

Intermediate (XII) — CBSE

B.L. Indo Anglian Public School

94.2% — School Topper

School Topper Best Student Award

Highlights

Science streamComputer Science focusTopped the school

2019

Matriculation (X) — CBSE

St. Ignatius School

98% — District Topper

District Topper

Highlights

98% marksTopped the districtAcademic excellence

2019

Matriculation (X) — CBSE

St. Ignatius School

98% — District Topper

District Topper

Highlights

98% marksTopped the districtAcademic excellence

Interests

Areas of Interest

Artificial Intelligence

Model-powered products

Agentic AI

Autonomous workflows

Distributed Systems

Reliable scale

Backend Engineering

APIs and services

Open Source

Shared tools

Problem Solving

Algorithms

System Design

Architecture

Startups

Impact velocity

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