About Me
I am an experienced iOS developer with a strong foundation in creating high-quality, scalable mobile applications. Proficient in Swift, Objective-C, SwiftUI, and UIKit, I specialize in building intuitive and performant user interfaces while adhering to modern architectural patterns like MVVM, MVC, and Clean Architecture. With a deep understanding of API integration, including REST and GraphQL, I ensure seamless communication between client and server systems. My expertise also extends to implementing CI/CD pipelines, managing dependencies using tools like CocoaPods and Swift Package Manager, and leveraging version control systems for efficient collaboration. I am passionate about crafting solutions that prioritize user experience and maintainability. I thrive on solving complex technical challenges, optimizing application performance, and staying at the forefront of emerging technologies. Committed to continuous improvement, I take pride in delivering applications that align with both user needs and business objectives.
Work Experience
Senior iOS Engineer - Northprim
Stockholm, Sweden (Remote) | June 2023 - Present
Leading the development of cutting-edge iOS applications, optimizing app performance to ensure best practices.
iOS Developer - Durbin HealthTech
Dhaka, Bangladesh | Feb 2022 - May 2023
Developed scalable iOS applications with responsive UI designs and ensured secure data practices in healthcare technology.
Junior iOS Developer - Durbin Labs Ltd
Dhaka, Bangladesh | Nov 2019 - Jan 2022
Collaborated with senior developers to deliver high-quality iOS apps, ensuring responsive UI designs and secure data handling.
🛠️ Skills
- 💻 Languages & Tools Swift, Objective-C, C, C++, Dart, Python, Xcode, Instruments, Git, Visual Studio, CodeBlocks, NetBeans
- 🎨 Frameworks & UI UIKit, SwiftUI, Combine, Alamofire, Firebase, SocketIO, WebRTC, CallKit, Zoom VideoSDK, Apple Pay, CorvusPay, bKash, PortWallet
- 🏗️ App Architecture & Patterns MVC, MVVM, Clean Architecture, Factory Pattern, Repository Pattern, Modularization, Dependency Injection (DI), SOLID Principles
- 🗄️ Persistence & Databases: Keychain (encrypted), UserDefaults, Core Data, Realm, SQLite, MySQL, SQLite, MySQL, Oracle
- 🌐 Networking & iOS Expertise RESTful APIs, URLSession, Alamofire, Combine, async/await, GraphQL, WebSockets, App Store Publishing, In-App Purchases, Push Notifications
- ⚙️ Concurrency & Core Skills Grand Central Dispatch (GCD), Swift Concurrency, Memory Management, Threading, Async Programming, Data Structures & Algorithms (DSA), Problem Solving, Security Best Practices
- 🧪 Testing & Debugging XCTest, XCUITest, JUnit, Snapshot Testing, Mocking, Test-Driven Development (TDD), Instruments, Memory Leak Detection, Crashlytics
- 📦 CI/CD & Dependency Management GitHub Actions, Xcode Cloud, Fastlane, CocoaPods, Swift Package Manager (SPM), Carthage, Dependency Injection
- 🔧 Version Control Git, GitHub, GitLab, Bitbucket, Git Flow, Code Review & Merge Strategies
- 🤝 Soft Skills & Project Management Scrum, Agile, Jira, Cross-functional Collaboration, Technical Documentation, Mentorship, Communication
Apps
eDoktor
Telemedicine app with secure video calls, flexible scheduling, and at-home healthcare services.
Dial
A privacy-focused calling app that simplifies international dialing and ensures secure, high-quality voice connections across the globe.
NZ Chat
A secure messaging and calling app with end-to-end encryption and a built-in AI chatbot for smart conversations.
Bible Messenger
A daily faith companion offering Bible study plans, affirmations, verse finder, and spiritual guidance to grow your journey.
Customization Diamond Finder
An all-in-one AI tool for sandbox games — find diamonds, customize visuals, and optimize your survival or creative gameplay.
VVMail
Send video and voice messages instantly to contacts without typing.
Addons & Mods Hub
Game customization app with mods, skins, and in-app purchases using StoreKit integration.
Doctor Dekhao
A healthcare platform connecting patients with verified doctors online — book appointments, get consultations, and manage your health from anywhere.
Du Healthtech
Telehealth app providing online consultations, e-prescriptions, and medication reminders.
DuComm
Free communication app with messaging, video calls, SIP/VoIP support, and monitoring tools.
eDesk
HR and employee platform for task management, payroll, and performance monitoring.
Durbin Classroom
Low-bandwidth education app for rural learning, designed to support virtual classes.
Articles
SOLID Principle Example with Swift
The SOLID principle is key to writing clean, maintainable code. This article explains each principle with clear Swift examples—both good and bad. Read full article
Unit Testing in Swift
Unit testing helps verify that small parts of your Swift code work as expected. This article uses a simple app, EasyCalculator, to demonstrate basic testing with XCTest. Read full article
Understanding Closures in Swift
Closures are an important feature in Swift. They can be used as variables, function return types, and function parameters. Read full article
static vs class variable swift
In Swift, we use static and class to define properties and methods that belong to the type itself. This means you canaccess them without creating an instance of the class or struct. Read full article
Hire Me on Upwork
With a proven track record of successfully completing 12 projects and maintaining a 100% job success rate, I am dedicated to delivering high-quality iOS development solutions. If you are seeking a highly experienced and reliable iOS developer to bring your app vision to life, please feel free to visit my Upwork profile. I look forward to the opportunity to collaborate and build exceptional applications together.
Visit My Upwork Profile