Who I am
I’m Tajbir Roman Tajim (TR Tajim), a full-stack developer, competitive programmer, and open-source builder based in Rangpur, Bangladesh. With over 2.5 years of hands-on experience, I craft resilient web platforms, native Android applications, and developer tools. I care deeply about clean code, algorithmic efficiency, system architecture, and shipping practical solutions to real-world problems.
Core Technologies & Tech Stack
My daily engineering toolkit spans backend systems, reactive frontend frameworks, cloud architecture, and embedded electronics:
- Programming Languages: C, C++, Java, PHP, JavaScript, TypeScript, SQL, Bash.
- Web Development: Laravel, Vue.js, React, Inertia.js, Tailwind CSS, HTML5, CSS3, REST APIs.
- Mobile Engineering: Java, Android SDK, XML UI architecture.
- Robotics & IoT: Arduino, ESP32, MQTT protocols, sensor integration, hardware telemetry.
- Databases & Cloud: MySQL, PostgreSQL, Supabase, Firebase, Amazon S3, Cloudflare, Linux VPS.
Featured Software Projects
-
A community-driven educational platform and Facebook community for HSC and SSC students offering organized study material and resources, built in the open with over 1,000 registered users.
-
Battery-powered ESP32 sensor nodes sending real-time temperature, humidity, and air quality telemetry over MQTT to a centralized web dashboard with 99.8% uptime.
-
Full-stack web application with role-based authentication, student directories, search indexing, and batch management.
Browse all software projects →
Technical Articles & Writing
-
Architectural breakdown of what a free-tier-only cloud stack can and cannot do.
-
Lessons learned handling packet drops, sleep modes, and battery life optimization.
-
Engineering takeaways and community lessons from running open educational infrastructure.
Read all technical articles →