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I am a mobile app engineer with over four years of experience in Swift, SwiftUI, and Objective-C, alongside hands-on exposure to hybrid application development. I specialize in building scalable, testable mobile applications with clean architecture in Agile environments. I am committed to delivering high-quality user experiences backed by solid testing, both manual and automated. In my career, I have developed secure and optimized financial applications, enhanced media experiences, and modernized legacy codebases for improved maintainability and performance. I am experienced in RESTful APIs, server-driven UI, cloud-based features, and automated CI/CD workflows to ensure efficient and reliable product delivery.…I am a mobile app engineer with over four years of experience in Swift, SwiftUI, and Objective-C, alongside hands-on exposure to hybrid application development. I specialize in building scalable, testable mobile applications with clean architecture in Agile environments. I am committed to delivering high-quality user experiences backed by solid testing, both manual and automated. In my career, I have developed secure and optimized financial applications, enhanced media experiences, and modernized legacy codebases for improved maintainability and performance. I am experienced in RESTful APIs, server-driven UI, cloud-based features, and automated CI/CD workflows to ensure efficient and reliable product delivery.

Hamza Ahmed Siddiqui

App Developer, Developer, Programmer, +1

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I am a mobile app engineer with over four years of experience in Swift, SwiftUI, and Objective-C, alongside hands-on exposure to hybrid application development. I specialize in building scalable, testable mobile applications with clean architecture in Agile environments. I am committed to delivering high-quality user experiences backed by solid testing, both manual and automated. In my career, I have developed secure and optimized financial applications, enhanced media experiences, and modernized legacy codebases for improved maintainability and performance. I am experienced in RESTful APIs, server-driven UI, cloud-based features, and automated CI/CD workflows to ensure efficient and reliable product delivery.…I am a mobile app engineer with over four years of experience in Swift, SwiftUI, and Objective-C, alongside hands-on exposure to hybrid application development. I specialize in building scalable, testable mobile applications with clean architecture in Agile environments. I am committed to delivering high-quality user experiences backed by solid testing, both manual and automated. In my career, I have developed secure and optimized financial applications, enhanced media experiences, and modernized legacy codebases for improved maintainability and performance. I am experienced in RESTful APIs, server-driven UI, cloud-based features, and automated CI/CD workflows to ensure efficient and reliable product delivery.

Available to hire

I am a mobile app engineer with over four years of experience in Swift, SwiftUI, and Objective-C, alongside hands-on exposure to hybrid application development. I specialize in building scalable, testable mobile applications with clean architecture in Agile environments. I am committed to delivering high-quality user experiences backed by solid testing, both manual and automated.

In my career, I have developed secure and optimized financial applications, enhanced media experiences, and modernized legacy codebases for improved maintainability and performance. I am experienced in RESTful APIs, server-driven UI, cloud-based features, and automated CI/CD workflows to ensure efficient and reliable product delivery.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

German

Advanced

Work Experience

iOS Engineer at Mercedes-Benz Mobility AG

March 1, 2025 - Present

Led development and optimization of the Mercedes me Finance Application, delivering secure contract document downloads, mileage tracking, and payment method management (SEPA, credit cards, direct debit). Architected and migrated legacy UIKit flows to SwiftUI, reducing technical debt by 60% and improving maintainability and performance. Designed a high-performance document handling feature optimizing large PDF downloads using URLSession and async/await to enhance load times and reliability. Established robust quality practices with 80%+ unit test coverage using XCTest and automated PR validation workflows via GitHub Actions and Fastlane. Integrated advanced analytics and monitoring by adding Firebase event tracking to measure feature adoption and guide data-driven product decisions.

iOS Developer at Konsole Labs GmbH

June 1, 2024 - August 21, 2025

Developed personalized media experiences with AV Foundation and Media Player, including on-demand radio, video playback, and live news streaming with background audio. Enhanced cross-platform mobile delivery by maintaining and extending a React Native app, adding new features, and resolving production issues for iOS. Implemented robust analytics with Firebase to track user engagement and retention, enabling data-driven product improvements. Modernized legacy codebases by refactoring Objective-C modules into Swift, improving maintainability and reducing bugs. Strengthened quality and release pipelines by achieving 75% XCTest coverage and optimizing CI/CD workflows with GitHub Actions, cutting deployment time by 40%.

iOS Developer at Viftech Solution Ltd

August 1, 2017 - August 21, 2025

Designed, developed, and maintained iOS applications using Swift and Objective-C, delivering high-performance, user-focused features. Integrated RESTful services via Alamofire and URLSession, ensuring secure and efficient data exchange. Modernized and optimized codebases by refactoring legacy Objective-C modules to Swift, improving maintainability and reducing defects. Strengthened code quality and release reliability through comprehensive XCTest unit testing and optimized CI/CD pipelines with Git. Collaborated cross-functionally with UI/UX and backend teams to translate requirements into detailed technical plans and deliverables.

iOS Engineer at Mercedes-Benz Mobility AG

March 1, 2025 - Present

Developed and optimized the Mercedes me Finance application, delivering secure contract document downloads, mileage tracking, and multiple payment method management (SEPA, credit cards, direct debit). Architected and migrated legacy UIKit flows to SwiftUI, reducing technical debt by 60% and improving maintainability and performance. Designed and implemented a high-performance document handling feature for large PDF downloads using URLSession and async/await to improve load times and reliability. Established robust quality practices, achieving over 80% unit test coverage with XCTest and automating PR validation workflows via GitHub Actions and Fastlane. Integrated advanced analytics and monitoring using Firebase event tracking to measure feature adoption and guide data-driven product decisions.

iOS Developer at Konsole Labs GmbH

June 1, 2024 - August 21, 2025

Developed personalized media experiences using AV Foundation and Media Player frameworks, including on-demand radio, video playback, and live news streaming with background audio. Enhanced cross-platform mobile delivery by maintaining and extending a React Native app, adding new features and resolving production issues on iOS. Implemented robust analytics with Firebase to track user engagement and retention, supporting data-driven product improvements. Modernized legacy codebases by refactoring Objective-C modules to Swift, improving maintainability and reducing bugs. Strengthened quality and release pipelines by achieving 75% XCTest coverage and optimizing CI/CD workflows with GitHub Actions, reducing deployment time by 40%.

iOS Developer at Vift Tech Solution Ltd

August 1, 2017 - August 21, 2025

Designed, developed, and maintained iOS applications using Swift and Objective-C, delivering high-performance, user-focused features. Integrated RESTful services via Alamofire and URLSession to ensure secure and efficient data exchange. Modernized and optimized codebases by refactoring legacy Objective-C modules to Swift, improving maintainability and reducing defects. Strengthened code quality and release reliability through comprehensive XCTest unit testing and optimized CI/CD pipelines using Git. Collaborated cross-functionally with UI/UX and backend teams to translate requirements into detailed technical plans and deliverables.