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krishna3163/README.md
Krishna Kumar - Java Backend Developer & Microservices Architect



Welcome to Krishna Kumar's Profile
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Good Evening! 🌆  •  🕒 Current Time: 25 October 2026, 06:31 PM IST  •  🟢 Status: Open for Collaboration & SDE Roles


📄 File: CV.pdf (88.6 KB)  |  🗓️ Updated: October 2026  |  🔒 SHA: 68529d17


3D Profile Stats



⚡ About Me

  • 🎓 Education: B.Tech in Computer Science & Engineering @ Dr. A.P.J. Abdul Kalam Technical University (AKTU Lucknow, '27)
  • 📍 Location: Lucknow, Uttar Pradesh, India 🇮🇳
  • ⚙️ Core Specialization: Java Backend Architecture, Spring Boot 3 Microservices, RESTful API Design, and Relational Database Optimization (PostgreSQL)
  • 🧠 AI & LLM Integration: Building intelligent enterprise workflows with Google Gemini API for medical triage and automated assistance
  • 🧩 Algorithmic Discipline: Solved 100+ LeetCode problems in Java with strict Big-O time and space complexity standards
  • 🌟 Open-Source Impact: Creator and maintainer of open-source tooling suites with 250+ community stars
  • 🎯 Target Roles: Java Backend Developer Intern • Software Engineering Intern • AI/ML Developer Intern

🏛️ Core Engineering Pillars

🏛️ Pillar 🚀 Technical Focus 🛠️ Core Technologies
Backend Microservices Modular service decoupling, Spring Security 6 stateless JWT, and RFC-7807 error handling Java 17+ Spring Boot 3 Spring Security JPA PostgreSQL
AI & LLM Integration Enterprise workflows with Google Gemini API for automated symptom triage & smart assistants Google Gemini API Spring RestTemplate Prompt Engineering
Algorithmic Rigor 100+ LeetCode problems solved with strict Big-O time and space optimization Data Structures Algorithms JUnit Java Collections
Mobile & Tooling Android SDK background services, BroadcastReceivers, and system utilities Android SDK Java Shizuku Wireless ADB Linux



🎓 Academic Foundation

Dr. A.P.J. Abdul Kalam Technical University (AKTU)

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

🗓️ August 2023 – August 2027  |  📍 Lucknow, Uttar Pradesh, India


📚 Core Computer Science Coursework:

  • Data Structures & Algorithms (DSA) — Trees, Graphs, Dynamic Programming & Asymptotic Analysis
  • Database Management Systems (DBMS) — Relational Normalization, Indexing, ACID & SQL
  • Object-Oriented Programming (OOP) — SOLID Principles, Design Patterns & Concurrency
  • Operating Systems & Networks — Process Scheduling, Threading, Memory Paging & TCP/IP
 Campus Sunset



🛠️ Technical Arsenal & Ecosystem

Curated toolset honed across production architectures, backend microservices, and competitive problem solving.


💻 Programming Languages Java Python SQL JavaScript TypeScript C
⚙️ Backend & Architecture Spring Boot Spring Security JPA Microservices Node.js Express REST
🗄️ Databases & Persistence PostgreSQL MySQL MongoDB Supabase Firebase
🧠 AI, APIs & Cloud Gemini AI Socket.io Postman Razorpay
🛠️ DevOps & Developer Tools Git GitHub Docker Linux IntelliJ Maven



🚀 Flagship Production & Open-Source Projects

Real-world enterprise backend architectures, intelligent AI systems, and popular mobile tooling.


AI Healthcare System

🏥 AI Healthcare & Hospital Management System
Java 17 • Spring Boot 3 • Microservices • PostgreSQL • Gemini AI
  • Microservices Architecture: Decoupled services for auth, doctor directories, and queue bookings.
  • Doctor Discovery: Multi-parameter filtering by specialization, location, and gender.
  • Gemini AI Triage: Integrated LLM REST endpoints for automated symptom intake and guidance.
  • Security & Validation: Spring Security validation filters across all REST controllers.
View Project 		Focus Pet Android App

📱 Focus Pet – Productivity Android App
Java • Android SDK • Background Services • BroadcastReceivers
  • Pomodoro Focus Engine: Background countdown service with customizable acoustic alerts.
  • Distraction Interceptor: System BroadcastReceivers minimizing smartphone notifications.
  • Lifecycle Management: Resilient Android service lifecycles compliant with OS battery rules.
  • Theme Engine: SharedPreferences persistence supporting dynamic dark/light night modes.
View Project
Student Management System

🎓 Student Management System & REST Suite
Java 17 • Spring Boot 3 • Spring Security JWT • JPA • PostgreSQL
  • 3-Tier Architecture: Decoupled @RestController, @Service, and @Repository layers.
  • Role-Based Access: Spring Security 6 stateless filter chains (Admin vs Student access).
  • Database Optimization: Relational JPA mappings in PostgreSQL eliminating N+1 query overhead.
  • RFC-7807 Errors: Global @ControllerAdvice error handling with automated Postman tests.
View Project 		OpenDiscover & Android Tooling

🔍 OpenDiscover & Android Tooling Suite
TypeScript • React • Python Automation • Android Ecosystem
  • Open Source Discovery: Platform indexing trending developer utilities and open-source tools.
  • 180+ Stars: Curated ecosystem repositories (best_shizuku_apps 147★, best-root-apps 40★).
  • CI/CD Automation: GitHub Actions workflows auto-indexing APKs and upstream releases.
  • Technical Docs: Curated deep-dive guides for wireless ADB, debloating, and system permissions.
View Project



🧩 Algorithmic Discipline & LeetCode Metrics

Consistent daily problem solving in Java covering Arrays, Dynamic Programming, Graphs, and Trees.


🧩 230 Problems Solved

🏆 Global Rank: #737,377

🟢 Easy: 95 solved

🟡 Medium: 102 solved

🔴 Hard: 33 solved



🌟 Active Open-Source Repositories

Featured repositories with verified community engagement and stars.


📦 best_shizuku_apps_for_android_no_root

Curated Shizuku and no-root Android apps, wireless ADB tools, debloat utilities, p...

⭐ 150  |  🍴 8  |  🏷️ Python

📦 best-root-apps-for-android

Curated directory of Android root apps, Magisk, KernelSU, LSPosed modules, system ...

⭐ 43  |  🍴 1  |  🏷️ Python

📦 OpenDiscover

Open source project by Krishna Kumar

⭐ 38  |  🍴 0  |  🏷️ TypeScript

📦 GooglePhoto_Alternative

Open source project by Krishna Kumar

⭐ 34  |  🍴 1  |  🏷️ TypeScript



📊 GitHub Analytics & Contribution Skyline


GitHub Streak GitHub Stats



Top Languages by Repo Top Languages by Commit



3D Contribution Graph



🎖️ GitHub Official Achievements


Pull Shark Quickdraw YOLO Starstruck Pair Extraordinaire



github-snake



⚡ Live Activity Stream


Activity Repository Summary Date
🔨 Pushed 1 commit(s) krishna3163/OmniShizuku Update codebase 2026-10-25
🔀 Merged PR #38 krishna3163/OmniShizuku Pull request contribution 2026-10-25
🔀 Merged PR #36 krishna3163/OmniShizuku Pull request contribution 2026-10-25
🔀 Merged PR #34 krishna3163/OmniShizuku Pull request contribution 2026-10-25
🔀 Merged PR #39 krishna3163/OmniShizuku Pull request contribution 2026-10-25



💖 Community Wall & Supporters


💖 A heartfelt thank you to everyone who stars my repositories, follows my journey, and supports open source!


⭐ Stargazers Wall of Fame (1+ Supporters)

@Paavo00


👥 Community Followers (31+ Developers)

@standardgalactic @Paavo00 @Kos-M @Immanuel9567 @darmache @theBFGuk @AhmedDabish @Raajj-Kumar-Sah @rahuloraj @Jabaos @cool129 @S4IL21 @ApeNFTLover @RomanK2311 @Singh-Ujjawal @Jaytiwari052005 @shov0n-mux @Hare-Ram-Yadav @Gourav-kr-11 @shivrajsingh432 @Princekumar60090 @Tarundobhal @jaydev55678 @awady111 @DSQ2x @Saqquibkhan00 @sky1337x-cpu @romuluskopernikus13-cell @piyush3109 @2303630100089-lang @aHqeem69


⭐ Star any of my repositories or hit follow to be automatically featured on this wall!



🌍 Let's Connect & Collaborate

Feel free to reach out for software engineering opportunities, open-source projects, or tech discussions!


LinkedIn Gmail WhatsApp Telegram LeetCode GFG GitHub



“There are only two hard things in Computer Science: cache invalidation and naming things.” — Phil Karlton


Thanks For Visiting Krishna's Portfolio!

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  1. best_shizuku_apps_for_android_no_root best_shizuku_apps_for_android_no_root Public

    Curated Shizuku and no-root Android apps, wireless ADB tools, debloat utilities, privacy tools, and root alternatives.

    Python 150 8

  2. best-root-apps-for-android best-root-apps-for-android Public

    Curated directory of Android root apps, Magisk, KernelSU, LSPosed modules, system tools, privacy utilities, and no-root Shizuku apps.

    Python 43 1

  3. OpenDiscover OpenDiscover Public

    TypeScript 38

  4. portfolio_website portfolio_website Public template

    TypeScript 1

  5. GooglePhoto_Alternative GooglePhoto_Alternative Public

    TypeScript 34 1

  6. Job-And-Internship-Application-Tracker Job-And-Internship-Application-Tracker Public

    Job & Internship Application Tracker Backend built with Java 17, Spring Boot 3, Spring Security, JWT, PostgreSQL, Docker, and Swagger UI.

    Java