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jyoti369/README.md

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🧑‍💻 About Me

public class Debojyoti {

    String  name       = "Debojyoti Mandal";
    String  role       = "Software Development Engineer @ Juspay";
    String  location   = "Kolkata → Bangalore, India";

    String[] currentWork = {
        "Distributed microservices — 500K+ daily transactions, 99.99% uptime",
        "5x API latency improvement with Haskell + PostgreSQL (sub 50ms)",
        "AI/RAG automation — 90% less manual data retrieval across 4 orgs",
        "Keycloak OIDC SSO — cut login support tickets by 40%"
    };

    String[] langs    = {"Java", "Go", "Python", "Haskell", "C++", "TypeScript"};
    String[] cloud    = {"AWS (EC2/S3/SQS)", "Docker", "Kubernetes", "Terraform"};
    String[] backend  = {"PostgreSQL", "Kafka", "ActiveMQ", "Redis", "REST", "OAuth2"};

    String highlight  = "🏆 CodeChef 5★ (2032) · LeetCode Guardian (2179) · AIR 3 CodeStudio · GFG Rank #1";
}

📊 GitHub Stats

   

🛠️ Tech Stack

Languages

Java Go Python Haskell C++ TypeScript SQL

Backend & Infrastructure

Spring Boot Node.js PostgreSQL Apache Kafka Redis GraphQL

Cloud & DevOps

AWS Docker Kubernetes Terraform GitLab CI GitHub Actions

🏅 Competitive Programming

🏆 Platform Handle Achievement
CodeChef jyoti369 ⭐⭐⭐⭐⭐ 2032 Rating — Top 1% globally
LeetCode jyoti369 🛡️ Guardian — 2179 Rating · AIR 11 Weekly Contest 307
Codeforces jyoti369 1517 Rating
GeeksforGeeks jyoti369 Ranked #1 at institute — 3,000+ problems solved
CodeStudio jyoti369 AIR 3 — Monthly Contest #7

💼 Experience

🔵  Juspay          Feb 2024 → Present          SDE
    ├─ 500K+ daily txns · 99.99% uptime · horizontal scaling
    ├─ 5x latency improvement — Haskell + PostgreSQL + index tuning
    ├─ Keycloak OIDC SSO → -40% login support tickets
    └─ AI/RAG + Vespa → -90% manual data retrieval across 4 orgs

🔴  Red Hat          Aug 2023 → Jan 2024         Assoc. SDE
    ├─ CI/CD modernization → -45 min deploy time, +50% release speed
    └─ AWS S3 + Terraform + ActiveMQ migration — zero downtime

🟡  Rupeek           Jan 2023 → Jul 2023         SDE Intern
    ├─ 15+ REST APIs (Node.js) → -60% transaction processing time
    └─ Backend migration → +75% system throughput

🚀 Projects

Project Stack Highlights
fullstack-kit Java Daily Java practice — DSA, system design, Spring snippets & interview prep
Text-to-SQL Engine Node.js, PostgreSQL, LLMs 95% accuracy, 500 rps, <200ms p99
Sorting Visualizer React.js 8 algorithms, 60 FPS, live demo

📈 Contribution Graph

Activity Graph

contribution snake

📫 Connect

LinkedIn Gmail LeetCode CodeChef

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  1. meeting-fatigue-calculator meeting-fatigue-calculator Public

    Check how much time you waste on meetings

    TypeScript 1

  2. text-to-sql-powerhouse text-to-sql-powerhouse Public

    A powerful text-to-SQL conversion system

    JavaScript 1

  3. fullstack-kit fullstack-kit Public

    🚀 A curated, ever-growing full-stack developer toolkit — algorithms, code snippets, system design concepts & interview prep

    Java 1

  4. sorting_visualizer sorting_visualizer Public

    This is a Sorting Visaulizer which visualizes different sorting algorithms. It is built using React framework, HTML, CSS and Javascript languages.

    JavaScript