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Focusing
🎯
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@Softvence-Omega-Cyber-Monk @Softvence-Omega-Dev-Ninjas @Dev-Ninja-Backup @softvence-agency

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shahadathhs/README.md

My Profile


👋 Hi, I'm Shahadath Hossen Sajib (Sajib)

Backend Developer specializing in Node.js, NestJS, and Express.js, focused on building scalable, secure, and production-ready backend systems. I enjoy designing robust APIs, working with databases, and solving real-world engineering problems.


🚀 About Me

  • 🧠 Strong in backend architecture, API design, and system scalability
  • 🛠️ Experienced with PostgreSQL, MongoDB, Redis
  • ⚡ Built real-time systems using Socket.IO
  • 🐳 Hands-on with Docker, CI/CD, and AWS (EC2 & S3)
  • 🌱 Currently learning Golang, C++, and Data Structures & Algorithms
  • 🤝 Open to collaboration and backend-focused opportunities

✍️ Writing & Knowledge Sharing

I write about backend engineering, system design, DevOps, and real-world project learnings.


🔗 Connect With Me

Portfolio LinkedIn Medium Substack LeetCode


📫 Contact


💡 Philosophy

"Clean architecture, clear intent, and systems that scale."


🛠️ Tech Stack

Category Tools & Technologies
Backend NodeJS NestJS Express TypeScript
Databases PostgreSQL MongoDB Redis Prisma Mongoose
Real-time Socket.io WebRTC BullMQ
Cloud & DevOps AWS Docker Actions Nginx Caddy

💼 Experience

Backend Developer — Softvence Agency (July 2025–January 2026)

  • Building and maintaining scalable RESTful APIs using NestJS and TypeScript.
  • Built WebSocket gateways and background workers using BullMQ.
  • Designing and managed relational schemas in PostgreSQL with Prisma.
  • Designing and maintained subscription flows with Stripe.
  • Deployed scalable architectures to AWS EC2 & S3 with Docker and CI/CD (GitHub Actions).

Web Developer — Monster Studio (Oct 2024–Apr 2025)

  • Contributed to a large-scale MERN stack project with frontend and backend features.
  • Built reusable components and REST APIs using React.js, Remix, Express.js, Node.js, and MongoDB.
  • Managed Nx monorepo for modular, scalable development.
  • Led a small frontend team, improving collaboration and productivity.

Quality Assurance Intern — Monster Studio (Aug 2024–Sep 2024)

  • Wrote unit/integration tests using Jest, Vitest, MSW & Supertest; performed load testing with K6.
  • Helped improve code quality and reliability in a full-stack testing setup.

📊 Stats & Activity

LeetCode Stats

GitHub Overview Languages Used

Activity Graph


Pinned Loading

  1. systemix systemix Public

    Systemix is a modular, high-performance toolkit designed for building secure and scalable JavaScript and TypeScript systems.

    TypeScript

  2. local-mail-stack local-mail-stack Public

    A self-hosted, professional-grade email system that supports sending, receiving, storing, and managing emails using real SMTP and IMAP protocols — featuring a premium Web UI for a complete "Mini Gm…

    TypeScript

  3. knowledge-capsule-api knowledge-capsule-api Public

    Knowledge Capsule API is a Go-based backend service designed to manage "knowledge capsules"—bite-sized pieces of information categorized by topics and tags.

    Go

  4. rag rag Public

    A NestJS-based RAG (Retrieval-Augmented Generation) application using MongoDB for vector storage, Hugging Face embeddings, and Ollama for chat.

    TypeScript

  5. barisathi barisathi Public

    BariSathi is a full-stack web application that offers a smart rental housing solution, connecting landlords, tenants, and an admin.

    TypeScript 1

  6. bike-shop bike-shop Public

    A full-stack Bike Shop application that enables users to browse and purchase bicycles while providing administrators with a robust dashboard for managing products, orders, and users.

    TypeScript