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Hello! I'm Marwan Aziz, a mobile application developer specialising in iOS (Objective-C, Swift, SwiftUI) and Android (Java, Kotlin, Jetpack Compose). I thrive in Agile environments, collaborating with backend, product, and QA teams to build scalable apps, troubleshoot issues, and release features to both the App Store and Play Store. I value clean architecture, design patterns, and SOLID principles to deliver maintainable code, while driving quality through unit and UI tests and robust CI/CD processes. I enjoy mentoring teams and driving cross-functional collaboration to deliver high-quality solutions across platforms. When I'm not employed, I take on freelance projects, explore new technologies, and continuously refine my skills in modern mobile development practices.…Hello! I'm Marwan Aziz, a mobile application developer specialising in iOS (Objective-C, Swift, SwiftUI) and Android (Java, Kotlin, Jetpack Compose). I thrive in Agile environments, collaborating with backend, product, and QA teams to build scalable apps, troubleshoot issues, and release features to both the App Store and Play Store. I value clean architecture, design patterns, and SOLID principles to deliver maintainable code, while driving quality through unit and UI tests and robust CI/CD processes. I enjoy mentoring teams and driving cross-functional collaboration to deliver high-quality solutions across platforms. When I'm not employed, I take on freelance projects, explore new technologies, and continuously refine my skills in modern mobile development practices.

Marwan Aziz

App Developer, Web Developer, Developer, +2

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Hello! I'm Marwan Aziz, a mobile application developer specialising in iOS (Objective-C, Swift, SwiftUI) and Android (Java, Kotlin, Jetpack Compose). I thrive in Agile environments, collaborating with backend, product, and QA teams to build scalable apps, troubleshoot issues, and release features to both the App Store and Play Store. I value clean architecture, design patterns, and SOLID principles to deliver maintainable code, while driving quality through unit and UI tests and robust CI/CD processes. I enjoy mentoring teams and driving cross-functional collaboration to deliver high-quality solutions across platforms. When I'm not employed, I take on freelance projects, explore new technologies, and continuously refine my skills in modern mobile development practices.…Hello! I'm Marwan Aziz, a mobile application developer specialising in iOS (Objective-C, Swift, SwiftUI) and Android (Java, Kotlin, Jetpack Compose). I thrive in Agile environments, collaborating with backend, product, and QA teams to build scalable apps, troubleshoot issues, and release features to both the App Store and Play Store. I value clean architecture, design patterns, and SOLID principles to deliver maintainable code, while driving quality through unit and UI tests and robust CI/CD processes. I enjoy mentoring teams and driving cross-functional collaboration to deliver high-quality solutions across platforms. When I'm not employed, I take on freelance projects, explore new technologies, and continuously refine my skills in modern mobile development practices.

Available to hire

Hello! I’m Marwan Aziz, a mobile application developer specialising in iOS (Objective-C, Swift, SwiftUI) and Android (Java, Kotlin, Jetpack Compose). I thrive in Agile environments, collaborating with backend, product, and QA teams to build scalable apps, troubleshoot issues, and release features to both the App Store and Play Store. I value clean architecture, design patterns, and SOLID principles to deliver maintainable code, while driving quality through unit and UI tests and robust CI/CD processes.

I enjoy mentoring teams and driving cross-functional collaboration to deliver high-quality solutions across platforms. When I’m not employed, I take on freelance projects, explore new technologies, and continuously refine my skills in modern mobile development practices.

Skills

Experience Level

Expert

Expert

Expert

Expert

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Expert

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Expert

Language

Work Experience

Android App Developer at Asset Insights

August 1, 2025 - November 1, 2025

Built the Android version of the PodFlo app from scratch and delivered it to the Play Store for testing. Worked closely with backend, iOS, product, and QA teams, consuming REST APIs and WebSocket streams for real-time data. Structured the project for scalability and maintainability with clear module separation. Used Kotlin and Jetpack Compose with MVVM and a modular architecture. Implemented Hilt for dependency injection and enforced code quality with Lint and Detekt. Set up CI/CD pipelines and managed code through Azure DevOps.

Lead Mobile Developer at GymCatch

August 1, 2023 - August 1, 2025

Led feature development across iOS and Android, integrating REST and GraphQL APIs for core app functionality. Implemented and maintained payment flows using Stripe and GoCardless, including subscriptions and recurring payments. Proficient in Swift (iOS) and Kotlin (Android). Expertise in Xcode (iOS) and Android Studio (Android). Apply Agile for efficient project management. Optimise performance, scalability, and resilience with comprehensive unit and UI testing.

Mobile App Developer (Freelance / Self-Employed)

February 1, 2023 - Present

Delivered iOS and Android solutions for multiple clients, including IRIS Software Systems and FDP. Developed production features using Swift, SwiftUI, Objective-C, Kotlin, and Jetpack Compose. Integrated REST and GraphQL APIs for core application functionality. Owned full delivery lifecycle: architecture, CI/CD, testing, App Store & Play Store releases, and stakeholder collaboration.

iOS Engineer at BBC

August 1, 2022 - December 1, 2022

iOS development. Objective-C, Swift & SwiftUI. Agile Scrum. CD/CI (Jenkins, GitHub, Fastlane). CocoaPods. Bug fixing, adding new features and app store releasing. Jira project management. Unit & UI testing. Swift Package Manager

Co-Founder at APP4IDEA

August 1, 2019 - August 1, 2022

Co-Founder and Director of App4Idea; managed day-to-day company operations, specialising in Android and iOS development.

iOS Developer at Healthily (Your.MD)

August 1, 2020 - August 1, 2022

iOS development. Swift & SwiftUI. Agile Scrum. Support QA to get tasks done. CocoaPods. CD/CI (CircleCI, GitLab, Fastlane). Bug fixing, adding new features and app store releasing. Jira project management. Swift Package Manager

Mobile Developer at ERT

March 1, 2019 - June 1, 2020

Building SDKs and libraries used by other Apps. Reactive Swift. XCTest & XCUITest. Agile Scrum & SAFe. Scrum master. CocoaPods. CD/CI (TC, GitLab, Fastlane). Bug fixing and adding new features to iOS & Android Apps. Android & iOS localisation. Jira project management. Swift Package Manager

Mobile Developer at Conker Group

June 1, 2017 - February 1, 2019

iOS & Android development, CocoaPods. Bug fixing and adding new features to iOS & Android Apps. iOS Enterprise distribution. App Store distribution. Google Play Console distribution.

Mobile Developer at Music Magpie Entertainment

March 1, 2016 - June 1, 2017

iOS & Android development. Maintain and improve existing iOS & Android Apps. Business/Data Analysis frameworks integration using CocoaPods. App Store deployment and distribution. Google Play Console, distribution. TestFlight distribution.

Junior iOS Developer at Epyx Ltd

August 1, 2014 - March 1, 2016

iOS development. Maintain and enhance iOS & Android Apps. Fix incident issues. Provide advice and consultation for customer support. iOS & Android deployment.

Web Developer at De Montfort University

April 1, 2014 - July 1, 2014

Developing web pages using Drupal open source management tool. Project management. Integrate different APIs with Solr, to provide advanced search functionality.

iOS Research & Development at De Montfort University

June 1, 2013 - December 1, 2013

A good understanding how augmented reality Apps are work and implemented. Install and test iOS applications. Integrate 3D compatible frameworks with iOS. A Good understanding of the compatibility between iOS libraries and 3D modelling software. Mentor and use the device motion data.