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ItsDeadlyProgrammer/README.md

Harshvardhan Singh

Typing SVG

LinkedIn Email CodeChef 4 star LeetCode Knight Codeforces Specialist 


object Harshvardhan {
    val education  = "B.Tech CSE @ IIIT Bhopal  ·  CGPA 9.29"
    val role       = "Software Engineer  ·  Android & Kotlin"
    val building   = listOf("LLM-powered developer tools", "Online judges", "Kotlin Multiplatform apps")
    val principle  = "The LLM proposes. The sandbox proves."
    val strengths  = setOf("Kotlin", "C++", "Android", "Data Structures & Algorithms")
    val openTo     = "SDE internships & full-time roles"
    val reachMe    = "hvsr29march2004@gmail.com"
}

Featured Work

StressBugger dashboard 01  ·  AI DEVELOPER TOOL

StressBugger

Finds the exact input that breaks your competitive-programming solution.
  • An LLM writes test generators, checkers and brute forces; each must compile, pass samples and agree with the others before it is trusted
  • Stress-tests ~1,000 inputs per minute in a hardened Docker sandbox (C++, Java, Python)
  • Shrinks failures to a minimal counterexample and only marks a fix verified after re-running it

Java 21 Spring Boot Spring AI React PostgreSQL Redis Docker

Live demo Case study
02  ·  ONLINE JUDGE

CodeForge

An online judge built from scratch: Codeforces problems in, sandboxed verdicts out.
  • Compiles once, then runs every test with CPU, memory and output limits, reporting the program's real peak memory
  • Crash-safe queue: PostgreSQL leases with a reaper; Redis only wakes the workers
  • A Docker container per submission when self-hosted; one Kotlin codebase ships Web (Wasm), Android and Desktop

Kotlin Ktor Compose Multiplatform PostgreSQL Redis Docker

Live demo Case study 		CodeForge: an accepted C++ submission with three passed test cases
OS Simulator process scheduling 03  ·  SYSTEMS VISUALIZER

OS Simulator

Operating systems concepts you can watch run.
  • CPU scheduling (FCFS, SJF, SRTF, Round Robin, Priority) with live Gantt charts and waiting/turnaround metrics
  • Deadlock detection on resource allocation graphs with Banker's algorithm safe sequences
  • Memory allocation (First, Best, Worst, Next Fit) with fragmentation analysis

Kotlin Multiplatform Compose Wasm MVVM

Live demo Case study

Source code for these projects is private. Recruiters and reviewers can email me for access.


Tech Stack

Tech stack

Languages Kotlin C++ C Java Python TypeScript JavaScript Dart SQL
CS Core Data Structures Algorithms Competitive Programming Operating Systems DBMS OOP
Mobile & Frontend Jetpack Compose Compose Multiplatform Android Flutter React
Backend Ktor Spring Boot Spring AI Spring Security JPA / Hibernate Node.js REST WebSockets SSE
Data PostgreSQL pgvector MySQL Redis Firebase Cypher
DevOps Docker GitHub Actions Gradle Git Linux Netlify Render
AI / ML PyTorch Transformers scikit-learn LLM integration Ollama Gemini
Testing JUnit 5 MockK JaCoCo OpenAPI / Swagger

GitHub Activity

GitHub stats GitHub streak

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  1. stressbugger-portfolio stressbugger-portfolio Public

    StressBugger: AI-guided stress tester for competitive programming. Documentation, architecture, demos (source code private).

  2. Codeforge-Portfolio Codeforge-Portfolio Public

    CodeForge: online judge built from scratch in Kotlin with sandboxed execution. Documentation, architecture, demos (source code private).

  3. OperatingSystem-Portfolio OperatingSystem-Portfolio Public

  4. Calculator Calculator Public

    Kotlin

  5. MultimodalSentimentAnalysis MultimodalSentimentAnalysis Public

    Jupyter Notebook

  6. NewsApp NewsApp Public

    Kotlin