# Ratul Hasan Ruhan - Software Engineer & Systems Researcher
Source: https://hello.cv/ratulruhan
ratuler@ratuler.com | +8801700666666 | Dhaka

## Links
- Phone | +8801789536985
- Email | ratulhasanruhan@gmail.com
- LinkedIn | https://www.linkedin.com/in/ratul-hasan-ruhan/
- GitHub | https://github.com/ratulhasanruhan
- Facebook | https://www.facebook.com/ratulhasan.ruhan

## About
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.<br><br>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.

## Experience
### Founder & Full-stack Mobile Architect | Appibrium
https://appibrium.tech
I design and build complete mobile systems—from frontend UI to backend infrastructure—with deep integration of DevOps and machine learning. At Appibrium, I lead the full product lifecycle, turning ideas into high-performance, scalable apps.
### Software Engineer | Solution Explorer
https://solutionexplorer.com/
Design and develop cross-platform apps for mobile (iOS & Android) and desktop (Windows, macOS, Linux), ensuring performance, usability, and scalability.
### Mobile Application Developer | Sydrix AI
https://sydrixai.com
Contributed to rapid prototyping and feature development for early-stage AI products. Built the Sydrix AI mobile solution.
### Flutter Developer | BdCalling IT Ltd.
https://bdcalling.com/
Built and optimized real-time features using Socket.io for live data syncing.

Integrated audio/video calling features for both iOS and Android platforms.

Worked on production-level mobile apps in a fast-paced corporate environment.

Collaborated with cross-functional teams to deliver updates on tight deadlines.
### Mobile Application Developer | Emerge AI
https://www.linkedin.com/company/emergeai/
Working remotely with Emerge AI, I develop intuitive, high-quality mobile applications with Flutter, integrating AI-driven solutions to enhance user experiences. Thrilled to contribute to a team focused on innovation and excellence in mobile tech!
### Mobile Application Developer | Infolook
https://infolook.net/
Designed and developed cross-platform mobile applications using Flutter and Dart, delivering high-performance solutions with modern UI/UX. Collaborated with a hybrid team to implement features, optimize performance, and ensure smooth client deployment.
### Android Developer | Spotlight Creative
Developed and maintained enterprise-level Android applications using Java and XML.

## Skills
### Mobile & Multiplatform
- Flutter
- Kotlin
- .NET MAUI / C#
### Systems, Programming & Applied AI
- Rust
- Python
- Java / Spring
### Embedded, IoT & Networking
- Embedded Systems
- IoT
- Networking
### DevOps & Infrastructure
- CI/CD
- Deployment
- System Configuration

## Education
### University of Greenwich (NCC Pathway) | BSc (Hons) Computing
https://www.gre.ac.uk/
### Daffodil International University | BSc. in Computer Science & Engineering
https://daffodilvarsity.edu.bd/
### Shariatpur Govt. College | Higher Secondary Certificate (Science)
https://sgc.college.gov.bd/
### PTGD Govt. High School | Secondary School Certificate (Science)

## Research
### Caller Collision Resolution Protocol (CCRP): Bridging Simultaneous Call Attempts in Real-World Telephony
IEEE Conference | https://www.researchgate.net/publication/397017372_Caller_Collision_Resolution_Protocol_CCRP_Bridging_Simultaneous_Call_Attempts_in_Real-World_Telephony
This paper introduces the Caller Collision Resolution Protocol (CCRP), a novel framework designed to resolve mutual call collisions—a persistent issue in telephony where two parties calling each other simultaneously receive busy signals.

## Projects
### Ojogor - Bengali Programming Language Interpreter
https://ratulhasan.gitbook.io/ojogor
Ojogor is an interpreter for the Bengali programming language, enabling users to write and execute code in Bengali syntax. Designed for beginners and those new to programming.
### GoruSheba - Smart IoT & AI Farming
https://www.goru.help/
Transform your farm with GoruSheba - the leading IoT and AI-powered cattle management platform. Monitor livestock health, track farm operations, and optimize productivity with smart sensors and real-time analytics.
### Junior Cambrian
https://play.google.com/store/apps/details?id=com.junior.cambrian&hl=en_US
Educational Games: A collection of interactive games that enhance cognitive skills, problem-solving abilities, and creativity.
User-Friendly Interface: Intuitive and child-friendly design, ensuring ease of use for kids.
### Emerge AI – Mental Well-being App
https://play.google.com/store/apps/details?id=app.goemergeai.emergeai&hl=en_US
AI Food Scan: Instantly recognizes food items and provides detailed nutritional information.
Calory AI: Personalized calorie tracking and management.
NFT Pet: Unique digital pets using NFT technology for an engaging user experience.

## Volunteering
### Volunteer | Society for the Popularization of Science, Bangladesh
https://spsb.org/
### Volunteer | Bangladesh Open Source Network (BdOSN)
https://bdosn.org/
Contributing to initiatives that promote open-source culture, digital literacy, and inclusive technology in Bangladesh.

## Awards
### Coding Fest - 2026
Daffodil International Academy | 2026-02-02
Achieved 1st Place in a competitive coding event, gaining valuable experience in problem solving and collaborative development.
### National AI BUILD-A-THON – Trailblazer
MillionX Bangladesh | 2026-01-16 | https://www.prothomalo.com/technology/hqdxhziscj
Recognized as a Trailblazer at the National BUILD-A-THON for leading a team project delivering innovative, technology-driven solutions with real-world impact.
### Bangladesh ICT & Innovation Award 2025
Bangladesh ICT & Innovation Network (BIIN) | 2025-10-17 | https://www.tbsnews.net/bangladesh/bangladesh-ict-and-innovation-network-recognises-nations-top-innovators-1265456
Honored to receive the Bangladesh ICT & Innovation Award 2025 for my project Ojogor (অজগর) — the first Bengali programming language.
### Startup World Cup: 2025 | Regional Finalist
Pegasus Tech Venture | 2025-08-17 | https://news.daffodilvarsity.edu.bd/news/grand-finale-of-startup-world-cup-bangladesh-2025-held-at-daffodil-international-university-20250817-092920
From the first round to the final at 🌍 Startup World Cup: Bangladesh– 2025. Grateful to stand among 4500+ innovative startups.
### 1st Place – Programming Contest | DIA ICT Fest 2025
Daffodil International University-DIU | 2025-02-22 | https://www.tbsnews.net/economy/corporates/daffodil-international-academy-ict-fest-2025-inaugurated-1075236
It was an intense competition, and I’m grateful for the opportunity to test my skills and problem-solving abilities.
### 1st Place – Project Showcasing | DIA ICT Fest 2025
Daffodil International University-DIU | 2025-02-22 | https://www.tbsnews.net/economy/corporates/daffodil-international-academy-ict-fest-2025-inaugurated-1075236
Presenting my project and receiving valuable feedback was an enriching experience. Huge thanks to my mentors, peers, and the organizers for creating such a great platform for learning and innovation.
### 2nd Place – Puzzle Hunt | DIA ICT Fest 2025
Daffodil International University-DIU | 2025-02-22 | https://www.tbsnews.net/economy/corporates/daffodil-international-academy-ict-fest-2025-inaugurated-1075236
It was a fun and challenging experience that pushed my logical thinking and teamwork.
### National Tech Award - 2025
NTA | 2025-01-16
National Tech Award 2025 for Ishara, a real-time Bengali sign language translation system focused on accessibility and inclusion.

## Certifications
### Computer Architecture Course
Codecademy | 2026-03-04 | https://www.codecademy.com/profiles/ratulhasan.ruhan/certificates/dee8cc79cfe5e46834989e0d0ec1d2d5
### 2 in 1! Cisco CCNA 200-301 + Python Network Automation
Udemy | 2025-08-02 | https://www.udemy.com/certificate/UC-42719966-3bd8-47f3-b0ca-d3f67775cfd8/

## Languages
- Bengali | Native
- English | Fluent

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

## Source
Read this profile on Hello.cv: https://hello.cv/ratulruhan
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