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sanjeev662/README.md

Sanjeev Kumar Singh

Software Development Engineer @ Namekart

Full-Stack Engineer · Java · Spring Boot · Node.js · React

Portfolio LinkedIn Resume Email

I'm a full-stack engineer who builds fast backends, data-heavy platforms and AI tools that take manual work off people's plates, from the database all the way to the UI.

2+ years building production software 30+ platform modules owned end to end 280K records processed every day 15–30 ms search across 4M records 50% less manual analysis via AI assistant

🧠 What I Build

Backend & APIs: fast, reliable APIs and microservices for real-time traffic AI Automation: AI agents and LLM assistants that automate slow, manual workflows Data at Scale: databases that stay fast with millions of records and daily imports Web Apps & Dashboards: clean, responsive interfaces that work well on desktop and mobile Login & Security: secure sign-in and role-based access control for every user Deploy & Monitor: automated builds and deployments, plus dashboards that catch issues

🛠️ Tech Stack

Languages Java TypeScript JavaScript
Backend Spring Boot Node.js Express Kafka WebSockets / SSE
Frontend React Next.js Redux Tailwind CSS Material UI
Databases PostgreSQL MySQL MongoDB JPA
AI & Workflows Temporal LLM + RAG Telegram Bots
Security Spring Security Keycloak JWT / OAuth 2.0
Cloud & DevOps Docker GitHub Actions Azure Hetzner Cloud Git
Monitoring Prometheus Grafana Grafana Loki

💼 Experience

2020: Started B.Tech IT at CSJMU Kanpur2022: ICPC Regionals, top 10% of 5000+2023: Backend Intern at Rydeu Logistics2024: Graduated, joined Namekart as SDEToday: AI agents and data platforms at scale

🏢 Namekart · Software Development Engineer

Jul 2024 – Present · Noida
I own the company's domain-name platform end to end: 30+ modules for finding, acquiring, pricing and selling domains. I write and review production code across the stack.

🤖  AI SEO Automation Platform
Automates the whole SEO consulting process: site audits, keyword research, content briefs and rank tracking. Clients get scheduled reports on Telegram, and failed steps retry on their own.
AI agents Temporal Microservices Telegram bot
💬  AI Assistant for Platform Data
Teams ask questions in plain English and get instant reports from platform data, limited to what their role allows. Cut manual analysis by 50%.
LLM RAG Access control
📈  Domain-Intelligence Service
Imports 280K records every day and searches across 4M records in 15–30 ms, with streaming CSV export of results.
Spring Boot PostgreSQL Partitioning Indexing
🧑‍💼  HR Portal
Attendance, leave, work logs and stipend calculation in one place, with location-based check-in for offices in several cities. Cut manual HR work by 70%.
Full stack Automation Multi‑city offices

🚚 Rydeu Logistics · Backend Developer Intern

Nov 2023 – Jun 2024 · Bengaluru (Remote)
I worked on the platform's backend: faster APIs, secure access, and automation for vendor offers and customer leads.

⚡  API Performance
Optimized critical APIs, bringing average response time down from 2s to 1.2s. 40% faster.
Node.js REST APIs Performance
🔐  Keycloak Authentication
Built Keycloak-based authentication and authorization, securing platform access for users and reducing unauthorized access.
Keycloak Authentication Access control
🤖  Automated Vendor Offers
Built an automated vendor-offer feature that replaced manual work. 70% less manual effort and 35% higher participation.
Automation Node.js
📈  Freshworks CRM Integration
Integrated Freshworks CRM for customer interaction and email marketing, making booking management more effective. 30% more lead conversions.
Freshworks CRM Integrations Email marketing

🚀 Featured Projects

A few projects I've built. Click a card to see the code.

ToLet: Room on Rent — rental marketplace with map search, bookings and live chat (React, Node.js, MongoDB, Socket.io) Event Ticketing — paid event sign-ups with Razorpay, QR-code PDF tickets and an admin panel (React, Express, MongoDB) Job Scraper Agent — finds LinkedIn jobs, ranks them against my resume with Gemini and emails a shortlist (Node.js, Playwright) Visitor Management — frontend for an office front desk with RFID passes and dashboards (React, Material UI), 42 stars Wedding Invitation — animated digital invite with a live countdown and venue map (Next.js, TypeScript, Framer Motion) PDF Flipbook — realistic page-turning PDF reader that loads instantly (React, Vite)

Live demo: ToLet Live demo: Wedding Invitation Live demo: PDF Flipbook

More projects
Project Highlights Links
Visitor Management (Next.js) The same front-desk system rebuilt with Next.js and TypeScript Code
Route Finder Suggests walking or running routes for a chosen distance using Google Maps (React + Node.js) Live · Code
Portfolio My personal site with projects, experience and contact Live · Code

🏆 Achievements

ICPC Regionalist 2022: Mathura–Kanpur Regionals, top 10% of 5000+ coders 800+ problems solved in Java on LeetCode, GFG, CodeChef and more Certifications: Java (HackerRank 100%), Full Stack (Udemy 95%)

LeetCode GeeksforGeeks CodeChef HackerRank


Let's build something reliable.
Open to conversations about backend systems, distributed workflows and AI-powered products.

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  1. ToLet-RoomOnRent ToLet-RoomOnRent Public

    Explore rental options on our user-friendly platform. From cozy rooms to spacious flats and luxurious hotels, easily filter listings. Navigate property locations with embedded Google Maps. Connect …

    JavaScript 3 2

  2. Route-Finder-Application Route-Finder-Application Public

    A web app for runners, suggesting daily routes based on user-specified distance. It ensures routes loop back to the start and saves past routes. Perfect for exploring less-traveled roads in the Area..

    JavaScript 2

  3. visitor-management-system-react visitor-management-system-react Public

    This project is a Visitor Management System, designed to streamline the process of managing visitors in various environments such as offices, buildings, or events. It provides role-based access con…

    JavaScript 42 11

  4. visitor-management-system-nextjs visitor-management-system-nextjs Public

    This project is a Visitor Management System using nextJS and Typescript, Designed for managing visitors in various environments such as offices, buildings, or events. It provides role-based access …

    TypeScript 9 1

  5. job-scrapper job-scrapper Public

    An autonomous system that continuously discovers fresh LinkedIn job opportunities, intelligently filters and analyzes them using Gemini-powered resume matching, and delivers curated results straigh…

    JavaScript 1

  6. problem-solving problem-solving Public

    A collection of LeetCode questions to ace the coding interview! - Created using [LeetHub v2](https://github.com/arunbhardwaj/LeetHub-2.0)

    Java 1