Lead Software Engineer | Android & iOS | Mentor
📍 Dhaka, Bangladesh
🌐 arifz.xyz | 💼 LinkedIn | 🧑‍💻 GitHub

Hello! I’m Nazmul Haque Arif, a passionate and dedicated Mobile Application Engineer with over 7 years of experience specializing in Android and iOS development.

I focus on building clean, reliable, and high-performance mobile apps that deliver real value to users.
My strength lies in applying Clean Architecture, MVVM, and modern mobile development practices to ensure scalable, maintainable, and testable codebases.

I take pride in developing apps that work seamlessly offline, are optimized for performance, and follow the best security, usability, and UX standards.

• Android Development → Kotlin, Java, MVVM, Clean Architecture, Hilt, Room, Coroutines, Flow, WorkManager, LiveData, Navigation, DataBinding.
• iOS Development → Swift, UIKit, MVC, app lifecycle handling, performance optimization.
• App Architecture & Optimization → Clean code, offline-first approach, secure data handling, and battery-efficient design.
• Mentorship & Leadership → Guiding teams and mentoring junior developers on architecture, clean code, and professional growth.

Worked extensively on HealthTech-focused mobile applications that empower organizations to improve community health programs, telemedicine, and digital healthcare access.

• Designed secure, offline-first systems for health data collection and reporting
• Integrated real-time communication and appointment systems for doctors and patients
• Delivered apps used by health workers, hospitals, and NGOs to improve healthcare delivery outcomes

Proven experience in building FinTech and microfinance mobile applications that enhance financial inclusion and enable secure, reliable financial operations in underserved regions.

• Developed robust offline-first financial systems with smart synchronization
• Implemented secure authentication and data encryption (AES/RSA) for user safety
• Built solutions supporting loans, savings, payment tracking, and financial data management

Empowering rural communities through a fully offline-capable Android app that helps users manage micro-loans, group savings, and training attendance.

• Offline-first architecture with intelligent data sync
• Intuitive UI for field-level users
• Secure data handling and optimized performance

A comprehensive digital health platform connecting patients and doctors for online consultations, prescriptions, and follow-ups.

• Real-time video consultation and appointment management
• Secure patient data storage and prescription generation
• Optimized performance with a smooth user experience

Dynamic and modular survey system with section-based navigation (ViewPager2 + RecyclerView) and offline data storage.
Used for collecting health, demographic, and community survey data across multiple countries.

Developed and delivered 30+ Android and iOS applications serving millions of users, focusing on performance, scalability, and maintainability.

• Enhancing sync mechanisms and offline caching strategies
• Strengthening app security with AES/RSA encryption
• Mentoring new developers on Clean Architecture and modern Android best practices

I lead an Android Application Development Apprenticeship Program to help aspiring developers grow into professional Android engineers.

“Weakness in technology can be improved — but weakness in manner cannot.”

The program emphasizes:

• Clean architecture & design patterns
• Jetpack component mastery
• Practical app development
• Professional ethics & communication

I’m open to collaborating on impactful HealthTech and FinTech mobile projects, and mentoring enthusiastic developers.

📬 Reach me at:
🌐 arifz.xyz
💼 LinkedIn
🧑‍💻 GitHub

⭐ “Keep learning, keep building — technology should empower people.”