Hi, I'm Tharunkumar K 👋

Full Stack Developer | AI Application Developer

B.Tech Information Technology student building production-grade full-stack applications, distributed systems, and AI-powered developer tools.

I specialize in architecting high-reliability software ecosystems, isolated compiler sandboxes, real-time WebRTC/WebSocket communication channels, and scalable database schemas.

• 🎓 Education: B.Tech Information Technology — VSB Engineering College (CGPA: 8.5 / 10)
• 🎯 Target Roles: Software Development Engineer (SDE I), Full Stack Engineer, Backend Systems Engineer
• 🧠 Core Competencies: Data Structures & Algorithms, Object-Oriented Design, System Design, RESTful APIs, Concurrency & State Machines
• 📚 Currently learning: Distributed System Design & Cloud Native Architecture
• 🌐 Portfolio: tharunkumark4743.netlify.app

• 🥇 Code Thugs 2K26 — 1st Place / National Winner
• 🏆 Odoo × NMIT Bangalore Hackathon 2026 — National Finalist (Grand Finale at NMIT Bengaluru, Oct 10–11)
• 🇮🇳 India Innovates 2026 — National Finalist
• 🚀 Smart India Hackathon — National Finalist
• 🌟 SIH 2025 & 2026 Top 50
• 👨‍💻 IT Department Student Coordinator — VSB Engineering College
• 🎓 GeeksforGeeks Campus Mantri — 2026

Selected projects demonstrating full-stack engineering, real-world adoption, and measurable architectural impact.

All-in-One Multi-Platform Developer Activity & 3D Isometric Telemetry Suite (GitHub Action & CLI)

Next-generation developer telemetry visualizer generating dynamic 3D isometric city skylines, real-time activity streams, executive velocity banners, and multi-metric coding competency cards for GitHub profiles.

• 🚀 GitHub Marketplace Action: Published, reusable CI/CD Action (uses: Tharun4743/github-profile-visualizer@v1) powering dynamic profile automation across developer communities.
• 🏙️ 12-in-1 Complete Visualizer Suite: Generates 3D Contribution City, Executive Summary Banner, Developer Achievements & Medals, Commit Velocity Wave, Engineering Competency Radar, Productive Coding Habits, Language Matrix, Live Event Timeline, LeetCode, GeeksforGeeks, HackerRank, and Duolingo Telemetry in a single execution pass.
• 🎨 Universal Theming & Glassmorphism: 10 curated color themes (Cyberpunk, Tokyo Night, Dracula, Nord, Matrix, Synthwave, Monokai, Sunset, Emerald, GitHub Dark), user-defined 5-color palettes, configurable border radius, and transparent glassmorphism rendering.
• 📐 Pure SVG Mathematical Projection Engine: Zero headless-browser dependencies (no Puppeteer/Playwright overhead); renders 365 days of contribution depth using deterministic isometric math (isoX = (x - y) * cos(30°), isoY = (x + y) * sin(30°) - height) compiled into an ultra-fast Node.js bundle.

Tech Stack: Node.js 20+ · SVG Vector Math Engine · GitHub GraphQL & REST APIs · LeetCode Public GraphQL · @vercel/ncc
🔗 GitHub Marketplace Listing · Source Repository · Releases & Changelog

Enterprise Institutional Governance, Streak Tracking & Sandboxed Assessment Engine

Role-based academic governance and technical assessment ecosystem engineered for the Department of Information Technology.

• 👥 Real-World Campus Adoption: Actively adopted and used daily by 365+ enrolled students at VSB Engineering College.
• 🔐 Isolated Compiler Sandbox: Multi-language execution runtime (C, C++, Java 17, Python 3) with isolated child-process jails, execution timeout traps, and automated server-side hidden test case evaluation.
• ⚡ Relational Data Architecture: Normalized PostgreSQL database with 13 relational schemas, foreign-key integrity constraints, and optimized indexed queries.
• 📊 Algorithmic Momentum Schedulers: Automated nightly background daemons polling LeetCode GraphQL and GitHub REST APIs to track student solve velocity and streaks.
• 🛡️ 3-Tier Audit FSM & Anti-Cheat: Deterministic 3-tier approval chain (Coordinator → Advisor → HOD) with verifiable submission audit logs, fullscreen lockdown, and PIP webcam assessment proctoring.

Tech Stack: React 19 · TypeScript 5.8 · Vite 6 · Tailwind CSS · Node.js 20+ · Express · PostgreSQL 14 (13 Relational Tables) · Monaco Editor · Supabase · Cloudinary
🔗 Live Production Demo · GitHub Repository

Real-Time Collaborative Cloud IDE with Zero-SDK WebRTC Voice Mesh & Compiler

High-performance in-browser collaborative engineering workspace unifying multi-user operational sync, encrypted audio communication, and sandboxed compilation.

• 🏆 Code Thugs 2K26 1st Place Winner: Awarded 1st place in state-level hackathon for real-time systems engineering.
• 🎙️ Pure WebRTC Audio Mesh (Zero SDKs): Custom peer-to-peer audio mesh handling SDP handshakes, ICE candidates, hardware echo cancellation, and Web Audio AnalyserNode Voice Activity Detection (VAD) without paid 3rd-party SDK dependencies.
• ⚡ Sub-Pixel Operational Diff Streaming: Socket.IO pipeline streaming operational transformations, remote colored carets, and live user selection across a native Monaco (VS Code kernel) editor.
• 🚀 Instant <2s Workspace Provisioning: Dual-persistence architecture utilizing in-memory room state with PostgreSQL persistence, spinning up active collaborative workspaces in under 2 seconds.
• ⚙️ Multi-Language Sandboxed Execution: In-browser execution engine supporting JavaScript, TypeScript, Python, Java, C++, and Go via Piston API v2.

Tech Stack: React 19.2 · TypeScript · Node.js · Express · Socket.IO 4.8 · Pure WebRTC · Monaco Editor · PostgreSQL 16 · Piston API
🔗 Live Production Demo · GitHub Repository

Automated Campus Placement Governance & Corporate Recruitment Ecosystem

Full-stack recruitment workflow engine and placement governance platform built for collegiate Training & Placement Offices (TPO).

• 📈 Live 5-State WebSocket Recruitment Funnel: Bi-directional Socket.IO pipeline (Applied → Shortlisted → Technical Rounds → Interviewing → Offered) eliminating manual email lag and status confusion.
• 🧠 Google Gemini AI Resume Intelligence: Semantic analysis engine parsing student resumes against recruiter job specifications, computing fit scorecards and actionable skill-gap recommendations.
• 🚪 Automated Database Guardrails: Database-enforced CGPA and active backlog eligibility gating, eliminating manual eligibility verification errors.
• 📦 Cloud Document Vault & Transactional Email: Cloudinary CDN integration for secure academic transcripts and multi-provider transactional email delivery supporting Nodemailer SMTP, SendGrid, and Resend.

Tech Stack: React 19 · Vite 6.2 · TypeScript · Node.js 20+ · Express · Socket.IO · Supabase (PostgreSQL 15) · Google Gemini AI · Cloudinary CDN
🔗 Live Production Demo · GitHub Repository

Offline Multimodal RAG Engine & Local AI Assistant (Desktop & Web)

Air-gapped, privacy-first local multimodal Retrieval-Augmented Generation (RAG) system engineered for high-security, low-bandwidth, and confidential enterprise environments.

• 🔒 100% Offline Air-Gapped Inference: Eliminates cloud data leaks and recurring API costs by executing quantized local LLMs (llama3) and dense embeddings (nomic-embed-text) entirely on-device via Ollama.
• 📄 Local Document Pipeline & Vector Search: Ingests and processes complex PDFs locally using Apache PDFBox, chunking text and performing low-latency semantic vector similarity search stored in an embedded SQLite database.
• ⚡ High-Throughput Spring Boot Backend: Powered by Java 17 and Spring Boot 3 with JPA, HikariCP connection pooling, and bi-directional WebSocket streaming (/ws/chat) for real-time token-by-token answer generation.
• 💻 Dual Distribution Architecture: Single codebase supporting both a fast React + Vite web interface (with reverse proxy configurations) and a standalone cross-platform Electron desktop application bundling a self-contained JRE.

Tech Stack: Java (JDK 17) · Spring Boot 3 · React · Vite · Electron · SQLite · Apache PDFBox · Ollama (LLaMA 3, Nomic Embed) · WebSockets
🔗 GitHub Repository

Dual-Unit Embedded Rider Safety System with Wireless RF Ignition Interlock

Embedded vehicle safety platform engineered to proactively eliminate motorcycle accidents via real-time biometric and environmental telemetry.

• 🚀 Smart India Hackathon 2025 Top 50 Nominee: Selected as Top 50 out of 300+ campus engineering teams and officially nominated on the central SIH portal.
• 📡 Dual-Unit Low-Latency RF Architecture: High-reliability 433MHz wireless telemetry linking sensor-equipped helmet transmitter with motorcycle ignition receiver.
• 🚫 Sub-500ms Alcohol Interlock: Sensitive MQ-3 breath alcohol sensor continuously analyzing rider breath, cutting bike ignition within 500ms upon detecting intoxication.
• 👁️ IR Wear & Drowsiness Monitoring: Optical IR proximity sensor enforcing helmet compliance, paired with an eye-blink sensor tracking eyelid closure rates to wake riders during micro-sleep episodes.
• ⏱️ 5-Second RF Fail-Safe Watchdog: Hardware interrupt watchdog automatically isolating engine ignition if wireless telemetry is compromised.

Tech Stack: Arduino Core (C/C++) · RF 433MHz Telemetry · MQ-3 Alcohol Sensor · Optical IR Sensors · Relay Control Modules
🔗 GitHub Repository · Project Dossier

Enterprise Workforce Operations, Automated Payroll & Compliance Management Platform

Production-grade Human Resource Management System engineered for enterprise workforce governance, compliance tracking, and automated employee lifecycles.

• 🏆 Odoo × NMIT Bangalore Hackathon 2026 National Finalist: Selected nationwide for the 24-hour on-campus Grand Finale at Nitte Meenakshi Institute of Technology (NMIT), Bengaluru on October 10–11, 2026 after qualifying the virtual preliminary coding challenge.
• 👥 Lead Architect & Modular Branching: Directed a 4-person engineering team (ADMIN role) implementing modular Git feature-branch workflows across payroll, attendance, and leave management domains.
• 🔐 Two-Level Auth & Granular RBAC: Built robust role-based access control isolating Admin, HR Operations, and Employee portals with strict permission guardrails.
• 💰 Automated Payroll & Shift Analytics: Automated payroll calculations, statutory deduction ledgers, real-time attendance tracking, and financial analytics.
• 📬 Cloud Infrastructure & Transactional Messaging: Deployed on Render Cloud with Supabase (PostgreSQL 15), Cloudinary CDN for verified document storage, and Brevo HTTPS transactional email gateway.

Tech Stack: React 19 · TypeScript 5 · Node.js · Express 5 · PostgreSQL (Supabase) · Tailwind CSS v4 · Cloudinary · Brevo API · Render
🔗 Live Production Demo · GitHub Repository

Jul 2026 – Aug 2026

• Engineered Vehicle Service Management automotive case lifecycle automation platform on Pega Infinity '24.1 (Pega Next-Gen Innovators Program).
• Built multi-stage case flows (Intake → Diagnostic Inspection → Cost Estimation → Customer Approval SLA → Technician Repair → Automated Invoicing).
• Configured automated SLA Goal and Deadline escalation timers, declarative pricing rules, and skill-based work queue routing (HeavyVehicleQueue vs. LightVehicleQueue).

Jun 2026 – Jul 2026

• Architected and deployed CampusConnect, an enterprise placement governance and corporate recruitment platform.
• Engineered high-concurrency RESTful APIs and real-time Socket.IO pipelines backed by Supabase (PostgreSQL 15).
• Integrated Google Gemini AI for semantic resume scoring against recruiter requirements, generating skill-gap recommendations.
• Optimized query execution plans and frontend bundle sizes, significantly improving page load performance.

Nov 2025 – Jan 2026

• Graduated from Infosys Springboard 6.0 enterprise software engineering curriculum with top distinction.
• Developed StarWall, a full-stack peer recognition and analytics portal applying industry architectural design patterns.

• 🧠 Data Structures & Algorithms (advanced graph theory, dynamic programming, algorithmic optimization)
• 📐 Low-Level & High-Level System Design (distributed caches, database sharding, microservice patterns)
• 🏗️ Backend Concurrency & Architecture (event-driven microservices, connection pooling, rate limiters)
• ☁️ Cloud Native Infrastructure (CI/CD pipelines, container orchestration, edge deployments)
• 🤖 AI Application Development (RAG pipelines, semantic embeddings, vector search)

• 🏅 Infosys Springboard Internship Completion
• 🏅 Tata — GenAI Powered Data Analytics Job Simulation
• 🏅 TCS iON Career Edge — Young Professional
• 🏅 Google Cloud — Responsible AI
• 🏅 Google — Introduction to Large Language Models
• 🏅 Google — Prompt Design
• 🏅 Cisco — Introduction to IoT
• 🏅 Salesforce — Administrator Explorer

_{⚡ 100% Self-Contained Telemetry powered by GitHub Profile Visualizer by @Tharun4743}

I'm open to software engineering opportunities, technical collaborations, and interesting projects.

• 📧 Email: tharunkumark42007@gmail.com
• 💼 LinkedIn: tharunkumark4743
• 💻 GitHub: Tharun4743
• 🧩 LeetCode: Tharunkumar__K
• 🦉 Duolingo: Tharunkumar4743
• 🌐 Portfolio: tharunkumark4743.netlify.app

🐍 365-Day Contribution Activity Snake