# Ratul Hasan Ruhan - Software Engineer & Systems Researcher

👋 Welcome! I'm **Ratul Hasan Ruhan**, a Software Engineer & Systems Researcher based in Dhaka, Bangladesh. I'm passionate about building scalable mobile systems, exploring applied AI/ML, and creating innovative solutions that bridge technology with real-world applications.

## 🌟 About Me

I'm a software engineer working across mobile, web, desktop, embedded systems, and core computer science domains. I started with Android development and gradually expanded into cross-platform engineering, applied AI/ML, systems programming, and infrastructure work.

I'm especially interested in how software systems are designed, how components interact, and how research ideas translate into reliable, real-world applications. I value clarity, maintainability, and thoughtful engineering over quick fixes.

### 🏆 Key Achievements

- **Founder & Full-Stack Mobile Architect** at [Appibrium](https://appibrium.com) — Leading end-to-end mobile system development
- **Creator of Ojogor (অজগর)** — The first Bengali programming language, making coding accessible to Bengali speakers
- **Winner of Bangladesh ICT & Innovation Award 2025** — Recognized for innovation in technology
- **Startup World Cup 2025 Regional Finalist** — Among 4500+ innovative startups
- **Multiple 1st Place Awards** at DIA ICT Fest 2025 — Programming Contest & Project Showcasing
- **Published Researcher** — Author of research on Caller Collision Resolution Protocol (CCRP)
- **Award-winning Mobile Developer** — Expert in Flutter, cross-platform development, and AI/ML integration

### 💼 Current Role

Currently serving as **Founder & Full-Stack Mobile Architect** at **Appibrium**, where I design and build complete mobile systems—from frontend UI to backend infrastructure—with deep integration of DevOps and machine learning. I lead the full product lifecycle, turning ideas into high-performance, scalable apps.

## 🌐 Online Presence

### 🎯 Portfolio & CV

- **Portfolio Website**: [https://ratuler.vercel.app/](https://ratuler.vercel.app/)
- **Online CV**: [http://ratulruhan.cv/](http://ratulruhan.cv/)
- **Download Resume**: [PDF Download](https://ratuler.vercel.app/resume)

### 📝 Writing & Blogging

I regularly write about software engineering, mobile development, and technology:

- **Hashnode Blog**: [ratulhasanruhan.hashnode.dev](https://ratulhasanruhan.hashnode.dev) — Technical articles and insights
- **Medium**: [ratulhasanruhan.medium.com](https://ratulhasanruhan.medium.com) — In-depth tech stories and experiences
- **GitHub Blog**: Integrated into my portfolio for seamless access

### 👔 Professional Profiles

- **Peerlist**: [peerlist.io/ratulhasan](https://peerlist.io/ratulhasan/) — Professional network and portfolio
- **LinkedIn**: [ratul-hasan-ruhan](https://www.linkedin.com/in/ratul-hasan-ruhan/) — Professional network
- **GitHub**: [ratulhasanruhan](https://github.com/ratulhasanruhan) — Open source contributions

### 🎥 Social Media

- **YouTube**: [@ratulicious](https://www.youtube.com/@ratulicious) — Tech videos and tutorials
- **Facebook**: [ratulhasan.ruhan](https://www.facebook.com/ratulhasan.ruhan) — Personal updates
- **Personal Website**: [ratulhasan.link](https://ratulhasan.link) — Personal landing page

## 🎓 Education

- **BSc (Hons) Computing** — University of Greenwich (NCC Pathway), London, UK (Jan 2025 - Present)
- **BSc. in Computer Science & Engineering** — Daffodil International University, Dhaka, Bangladesh (Jan 2024 - Jan 2025)
- **Higher Secondary Certificate (Science)** — Shariatpur Govt. College, Bangladesh
- **Secondary School Certificate (Science)** — PTGD Govt. High School, Bangladesh

## 💡 Expertise & Skills

### Mobile & Multiplatform
- Flutter, Kotlin, .NET MAUI / C#
- Cross-platform mobile and desktop application development
- iOS & Android native development

### Systems, Programming & Applied AI
- Rust, Python, Java / Spring
- Systems programming and backend services
- Applied machine learning integration

### Embedded, IoT & Networking
- Embedded Systems, IoT protocols
- Network programming and infrastructure
- Hardware–software integration

### DevOps & Infrastructure
- CI/CD pipelines and automation
- Deployment strategies
- Production system configuration

## 🏅 Recognition & Awards

- **Coding Fest 2026 – 1st Place** (Feb 2026)
- **National AI BUILD-A-THON – Trailblazer** (Jan 2026) — Led a team project delivering technology-driven solutions with real-world impact
- **Bangladesh ICT & Innovation Award 2025** (Oct 2025) — For creating Ojogor, the first Bengali programming language
- **Startup World Cup 2025 Regional Finalist** (Aug 2025) — Among top startups in Bangladesh
- **National Tech Award 2025** — For Ishara, a real-time Bengali sign language translation system
- **1st Place – Programming Contest** | DIA ICT Fest 2025
- **1st Place – Project Showcasing** | DIA ICT Fest 2025
- **2nd Place – Puzzle Hunt** | DIA ICT Fest 2025

## 📜 Certifications

- **Data Literacy Certification** — DataCamp (Jun 2026)
- **Computer Architecture Course** — Codecademy (Mar 2026)
- **Cisco CCNA 200-301 + Python Network Automation** — Udemy (2024)

## 📚 Research & Publications

### Publications
- **Caller Collision Resolution Protocol (CCRP)**: Bridging Simultaneous Call Attempts in Real-World Telephony
  - Published: October 2025
  - DOI: 10.13140/RG.2.2.26499.98081
  - [View on ResearchGate](https://www.researchgate.net/publication/397017372_Caller_Collision_Resolution_Protocol_CCRP_Bridging_Simultaneous_Call_Attempts_in_Real-World_Telephony)

### Research Interests
- Computer systems and software architecture
- Applied AI / ML in real-world systems
- Human-centered and localized computing
- Programming languages and developer tooling

## 🚀 Featured Projects

### Ojogor (অজগর) — First Bengali Programming Language
An interpreter for the Bengali programming language, enabling users to write and execute code in Bengali syntax. Designed to make programming accessible to Bengali speakers, especially beginners.

[View Project](https://ratulhasan.gitbook.io/ojogor)

### GoruSheba — Smart IoT & AI Farming
A leading IoT and AI-powered cattle management platform. Monitor livestock health, track farm operations, and optimize productivity with smart sensors and real-time analytics.

[View Project](https://www.goru.help/)

### Other Notable Projects
- **Junior Cambrian** — Educational games for cognitive development
- **Emerge AI** — Mental well-being app with AI food scan and calorie tracking
- **Various Mobile Applications** — Cross-platform solutions for multiple industries

[View All Projects](https://ratuler.vercel.app/projects)

## 🤝 Volunteering

- **Amazon Web Services — AWS Student Builder Leader (2026–Present)** — Building cloud skills in the Bangladeshi student community
- **GLRC — Local Ambassador, Bangladesh (2026–2027)** — Promoting logic and reasoning education, organising preparatory sessions, and growing national participation
- **International Computer Science Competition — Country Ambassador (2026)** — Representing Bangladesh and encouraging student participation
- **Society for the Popularization of Science, Bangladesh (SPSB) — Volunteer (April 2025–Present)** — Promoting science education
- **Bangladesh Open Source Network (BdOSN) — Volunteer (April 2025–Present)** — Contributing to open-source culture and digital literacy

## 📄 Resume Access

My resume is available in multiple formats:

- **📥 Download PDF**: Available on the [Resume page](https://ratuler.vercel.app/resume)
- **🌐 View Online**: Interactive CV at [ratulruhan.cv](http://ratulruhan.cv/)
- **📊 Structured Data**: Machine-readable JSON at [ratuler.vercel.app/ratul-hasan-ruhan.json](https://ratuler.vercel.app/ratul-hasan-ruhan.json)

## 📞 Let's Connect

I'm always excited to connect with fellow developers, researchers, and tech enthusiasts! Feel free to reach out:

- **Email**: ratulhasan1644@gmail.com
- **LinkedIn**: [ratul-hasan-ruhan](https://www.linkedin.com/in/ratul-hasan-ruhan/)
- **WhatsApp**: [+8801789536985](https://wa.me/8801789536985)
- **GitHub**: [ratulhasanruhan](https://github.com/ratulhasanruhan)
- **Peerlist**: [peerlist.io/ratulhasan](https://peerlist.io/ratulhasan/)

## 📰 Media Coverage

My work, especially Ojogor, has been featured in multiple publications:

- The Business Standard
- Protidiner Bangladesh
- Dhaka Tribune
- TechWorld Bangladesh
- And more...

[View All Media Coverage](https://ratuler.vercel.app/recognition)

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**Let's build something amazing together! 🚀**

*Last updated: September 2026*

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