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What I Do
I'm a passionate Android Developer who loves building high-quality mobile apps that solve real-world problems. Over the past 4+ years, I've had the pleasure of working with diverse clients on platforms like Fiverr, delivering top-rated services and helping founders bring their ideas to life.
Mobile Development
Specialized in Native Android using Kotlin and Jetpack Compose, as well as modern Cross-Platform solutions with KMP and CMP.
Backend & APIs
Developing high-performance server-side applications and robust REST APIs using Node.js to power seamless user experiences.
Database Design
Architecting scalable data solutions with SQL (Postgres), NoSQL, Supabase, and Firebase (Firestore & Realtime Database).
Technical Writing
Writing in-depth technical articles and creating engaging content on mobile development and modern software architectures.
Skills
Languages
Java
Kotlin
C
C++
Javascript
PythonFrameworks & library
AndroidX
Jetpack composeKotlin MultiplatformCompose Multiplatform
Retrofit
Hilt
Room
Material 2 & 3
CoroutineBackend & APIs
Node.js
REST API
Express.jsDatabases
PostgreSQL
Supabase
FirestoreRealtime DB
SQL & NoSQLDevOps & Clouds
Docker
CI/CD (Github Actions)
AWS EC2AWS S3AWS Elastic CacheFirebase Cloud FunctionsTools
Android Studio
IntelliJ IDEA
XCode
VS Code
Antigravity
ChatGPT CodexAwards & Activities
BIM 2025 Research Presentation
Successfully presented our research paper at the 3rd International Conference on Big Data, IoT, and Machine Learning. Recognized for innovative contributions to the field of IoT and ML.
Champion - IT Quiz (DIU Fall Fest)
Secured 1st place in the IT Quiz competition at the DIU Fall Fest 2024, demonstrating deep technical knowledge and quick problem-solving across core CS concepts.
Runner-Up - Programming Contest
Achieved 2nd place in the Programming Contest segment of the DIU Fall Fest 2024, competing against top university teams in algorithmic challenges.
Finalist - BCS ICT Fest 2025
Our team 'Ababil Flocks' reached the final round of the Project Showcasing segment among 100+ university teams at the BCS ICT Fest 2025, organized by BUET IICT.
Experience & Education
Work Experience
Fiverr (Level 2 Seller)
Android app developer
Level 2 Seller on Fiverr with a 100% project completion rate across 43+ high-impact mobile solutions. Specializing in premium Android application development, I have maintained a perfect 5-star rating by delivering scalable, user-centric apps that exceed client expectations and drive business growth.
Exige
Software Engineer
Led the development of a comprehensive parking management ecosystem for the US market. Optimized real-time data synchronization between mobile clients and backend servers, significantly reducing latency and improving user experience for both parking attendants and customers.
DomRide
Android app developer
Architected and developed a robust rideshare application using Kotlin and Jetpack Compose. Successfully managed the complete lifecycle of the driver and rider apps, integrating complex features like real-time GPS tracking, dynamic fare calculation, and secure multi-payment gateway integration.
Education
Dhaka International University
Computer Science Engineering
Actively engaged in research and competitive programming. Successfully presented research at BIM 2025 and won multiple awards in national ICT fests.
Rajshahi Polytechnic Institute
Electromedical Technology
blog
Deep Dive into Kotlin Coroutines, Threads, and Suspension
A coroutine is a concurrency design pattern used to simplify code that executes asynchronously. In Kotlin, coroutines allow you to write asynchronous code in a sequential style.
What is suspension in coroutines and how it works?
The key feature of a coroutine is its ability to suspend its execution without blocking the underlying thread. When a coroutine suspends, it pauses its execution at a certain point and allows the thread it is running on to do other work.
What is Dispatcher, Thread and Threadpool?
In Kotlin coroutines, a dispatcher is responsible for determining the thread or thread pool where a coroutine will execute. Dispatchers control the threading behavior of coroutines, allowing you to specify whether a coroutine should run on the main thread, a background thread, or a specific thread pool.
CLIENT FEEDBACK
noelvillaman
fiverrUnited States
"Rafiul587 is a very responsible person. I will work with him any time I need for my projects"
sagarmir55
fiverrIndia
"It's great to work with you again, i really appreciate your well behaviour, communication skill, and also deep talent in the field, strongly recommended!"
frodas25
fiverrSlovakia
"He is very skilled developer and he can quickly understand everything that project needs. He is also very iniciative and he can come up with own and better solutions."
FAQ
Still have questions?
I'm here to help you bring your ideas to life.
