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Having a blast
:bowtie:
Having a blast
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Achievement: Pull Shark

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Achievement: Pull Shark

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karar-hayder/README.md

Typing SVG

🧠 About Me

Backend-focused software engineer with a strong interest in building reliable systems, APIs, and internal tooling.
I care deeply about correctness, architecture, and how software behaves under real-world constraints like scale and concurrency.
Most of my work lives on the backend, where design decisions, invariants, and trade-offs matter.

🚀 What I Like to Build

🧩 🛠️ ⚙️ 📈
Backend systems & APIs
Designed for clarity, correctness, and scale		 Automation & internal tools
Reducing friction and manual work		 Developer-facing tooling
Improving workflows and reliability		 Production-grade software
Performance-conscious and resilient

🚀 Featured Projects

🏦 SecureBank Ledger-based core banking API focused on correctness and transactional safety.
Guarantees money conservation, atomic transfers, idempotency, and concurrency safety.
Built with ASP.NET Core, EF Core, PostgreSQL, and Clean Architecture.
🐍 SynthTweet AI-enhanced social platform combining real-time interaction with intelligent responses.
Built with Django, Next.js, PostgreSQL, and Redis.
🔍 RepliCheck High-performance static analysis tool for detecting duplication and code quality issues.
Supports Python, JS/TS, JSX/TSX, and C# with detailed Markdown/JSON reporting.
📚 RecAnthology Modular recommendation engine for books, movies, and TV shows.
Focused on algorithm design, data modeling, and backend system trade-offs.
Built with Django, DRF, and PostgreSQL.
💾 SafeCopy Reliable backup automation tool with scheduling, versioning, compression, and audit logs.
Designed for robustness and minimal operational overhead.
Additional Systems
  • ♟️ Quizzy-Chess
    Real-time multiplayer chess platform using WebSockets, Redis, Docker, and modern UI.

🔧 Core Tech Stack

Primary tools for backend system design and implementation:
Backend Python, Django, Django REST Framework, C#, ASP.NET Core, Entity Framework Core
Frontend (Supporting) TypeScript, Next.js, React, TailwindCSS, Sass
Databases & Caching PostgreSQL, MySQL, SQLite, Redis
Infrastructure Docker, Docker Compose, Nginx, Linux (Ubuntu)
Tooling Git, Bash, VS Code
Python C# .NET Django PostgreSQL Redis Docker Linux

📝 Current Focus Areas

🧩 Backend architecture & system invariants ⚙️ Transactional correctness & reliability 📦 Production infrastructure & deployments

🤝 Connect With Me

LinkedIn Discord

💪 Outside of Tech

🏋️‍♂️ Strength training & calisthenics 🎥 Photography & cinematography

📈 GitHub Stats

GitHub Stats Top Languages

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  1. ITS-SecureBank ITS-SecureBank Public

    Ledger-based core banking API built with .NET 8. Guarantees atomic, crash-safe money transfers using immutable debit/credit entries, idempotency guards, optimistic locking, and JWT-based zero-trust…

    C#

  2. SynthTweet SynthTweet Public

    SynthTweet is an AI-enhanced social platform that combines traditional microblogging with intelligent interactions. Built with Django, Next.js, and PostgreSQL, it lets users create, like, and follo…

    TypeScript

  3. Replicheck Replicheck Public

    A Python tool for detecting code duplications and code quality issues in your projects. Replicheck analyzes your codebase to identify similar or identical code blocks, high complexity functions, la…

    Python 2 2

  4. RecAnthology RecAnthology Public

    RecAnthology (Recommended Anthology) is an intelligent recommendation system designed to curate collections of books, movies, and TV shows based on user preferences. By leveraging advanced algorith…

    Python 1

  5. SafeCopy SafeCopy Public

    SafeCopy is a lightweight, automated backup tool for Windows. It lets you configure folder-to-drive backups through a simple local web interface, with both manual and scheduled options. Ideal for U…

    Python