Hey there, I'm Shahadath Hossen Sajib (Sajib) — Backend Developer specializing in scalable, secure, and high-performance systems (microservices, real-time features, AI-powered solutions). I work with Node.js, NestJS, Python, FastAPI, and TypeScript.
- 🧠 Designing robust RESTful APIs, managing PostgreSQL, MongoDB, Redis, and building real-time features, background processing, and AI-powered services
- 🏗️ Specializing in microservices architecture—large, configurable backend systems with complex workflows and multi-module operations
- ⚡ Experienced with Socket.IO, BullMQ, and real-time communication patterns
- 🐳 Hands-on with Docker, CI/CD (GitHub Actions), AWS (EC2 & S3), Nginx, and Caddy
- 🤝 Open to collaboration and backend-focused opportunities
- 📧 Email: shahadathhossensajib732@gmail.com
- 📄 Resume: https://drive.google.com/file/d/1dtZCEgZyof-qrUreeVpXDlOovosegpuf/view
I write about backend engineering, system design, DevOps, and real-world project learnings.
| Category | Tools & Technologies |
|---|---|
| Backend |       |
| Databases |      |
| Real-time |    |
| Cloud & DevOps |      |
Back End Developer — Digital Pylot (Feb 2026 – Present) · Dhaka, Bangladesh · On-site
- Contributing to a large-scale microservices backend—building scalable services, complex workflows, and AI/communication integrations across multiple modules.
Back End Developer — Softvence Agency (Jul 2025 – Feb 2026) · Dhaka, Bangladesh · On-site
- Built real-time logistics and trip tracking (Uber-style) with dynamic routing, multi-party coordination, weather-aware routing, and map integrations.
- Engineered platform-level payment systems (subscriptions, payouts) and HR/scheduling workflows (payroll automation, timezone-aware operations).
- Developed high-volume data platforms and AI-powered automation (candidate evaluation, interview generation, analytics).
- Delivered interactive engagement features; designed PostgreSQL schemas with Prisma/Drizzle; deployed and maintained AWS infrastructure.
Web Developer — Monster Studio (Aug 2024 – Apr 2025) · Chattogram, Bangladesh · On-site
- Contributed to 20+ production websites in a monorepo; led frontend team; built AI-powered document assistant, custom CMS, and creator tools.
- Strengthened product reliability through unit tests and performance testing.
