Junior Software Engineer · Backend Developer · Problem Solver
📫 mdrajinmashrursiam@gmail.com · 📞 01344782702 · 📍 Dhaka, Bangladesh
I'm a backend-focused software engineer who genuinely enjoys understanding how systems work under the hood — not just making them work, but knowing why they work. I build with Java and Spring Boot as my primary stack, and I'm comfortable reaching for C#/.NET, Go, or TypeScript when the problem calls for it.
My background is in ICT (BSc + MSc from MBSTU), and I've sharpened my problem-solving skills across 800+ competitive programming solutions on platforms like Codeforces, AtCoder, and LeetCode. I care deeply about clean architecture, secure APIs, and writing code that other people can actually read and maintain.
When I'm not building, I'm learning — currently exploring distributed systems, DDD, and backend design patterns that scale.
- 🔭 Building indoor navigation systems with ARCore + Spring Boot + PostgreSQL
- 🌱 Currently learning Go and deepening Spring ecosystem knowledge
- 💡 Interested in open source contribution and backend infrastructure
- 🧩 800+ problems solved across competitive programming platforms
Languages
Frameworks & Libraries
Databases & Tools
| Project | Description | Stack |
|---|---|---|
| ShopVerse | Full-featured e-commerce platform with cart, payments, and admin dashboard | Spring Boot, React, Vite |
| Resource Helper | AI-powered resource guidance tool with Google/GitHub auth and real-time search | Web, Firebase |
| Personal Finance Management | Finance tracker with data visualization and category breakdowns | Web |
| *RailBook | Rail Ticket Booking System | ASP.NET, Angular |
| dse-scraper | Dhaka Stock Exchange Scrapper | Python |
| Platform | Profile | Solved |
|---|---|---|
| Codeforces | rajin_siam | 213 |
| AtCoder | rajin_siam | 196 |
| LeetCode | rajinsiam9 | 167 |
| UVA | rajin_siam | 103 |
| HackerRank | RajinSiam | 70 |
| SPOJ | rajin_siam | 11 |
| HackerEarth | gogeta14 | 10 |
| CodeChef | rajin_siam | 6 |
MSc in Information and Communication Technology — MBSTU (May 2025 – Present)
BSc (Engg.) in Information and Communication Technology — MBSTU (Feb 2020 – Mar 2025) · CGPA: 3.35 / 4.00