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Hello! I'm Marc El Helou, a Senior iOS Engineer with 7+ years of experience building robust, high-performance iOS apps. I specialize in Swift, UIKit, SwiftUI, and modern architectures, delivering scalable features with a focus on performance and maintainability. I've led end-to-end feature development, mentored engineering teams, and modernized legacy codebases. I enjoy collaborating with product and design, driving technical excellence, and exploring new technologies to keep apps at the forefront of the platform.…Hello! I'm Marc El Helou, a Senior iOS Engineer with 7+ years of experience building robust, high-performance iOS apps. I specialize in Swift, UIKit, SwiftUI, and modern architectures, delivering scalable features with a focus on performance and maintainability. I've led end-to-end feature development, mentored engineering teams, and modernized legacy codebases. I enjoy collaborating with product and design, driving technical excellence, and exploring new technologies to keep apps at the forefront of the platform.

Marc El Helou

Web Developer, Programmer, Front-End Developer, +4

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Hello! I'm Marc El Helou, a Senior iOS Engineer with 7+ years of experience building robust, high-performance iOS apps. I specialize in Swift, UIKit, SwiftUI, and modern architectures, delivering scalable features with a focus on performance and maintainability. I've led end-to-end feature development, mentored engineering teams, and modernized legacy codebases. I enjoy collaborating with product and design, driving technical excellence, and exploring new technologies to keep apps at the forefront of the platform.…Hello! I'm Marc El Helou, a Senior iOS Engineer with 7+ years of experience building robust, high-performance iOS apps. I specialize in Swift, UIKit, SwiftUI, and modern architectures, delivering scalable features with a focus on performance and maintainability. I've led end-to-end feature development, mentored engineering teams, and modernized legacy codebases. I enjoy collaborating with product and design, driving technical excellence, and exploring new technologies to keep apps at the forefront of the platform.

Available to hire

Hello! I’m Marc El Helou, a Senior iOS Engineer with 7+ years of experience building robust, high-performance iOS apps. I specialize in Swift, UIKit, SwiftUI, and modern architectures, delivering scalable features with a focus on performance and maintainability.
I’ve led end-to-end feature development, mentored engineering teams, and modernized legacy codebases. I enjoy collaborating with product and design, driving technical excellence, and exploring new technologies to keep apps at the forefront of the platform.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Language

Arabic

Fluent

English

Fluent

German

Advanced

Work Experience

Senior iOS Engineer at Onova Holding AG

September 1, 2021 - Present

Led end-to-end development of key features, adopted Kotlin Multiplatform to share business logic across iOS and Android, conducted regular code reviews and refactorings, improved modularity, testability, and long-term maintainability. Collaborated with backend, product, and design teams to ensure cohesive system design, mentored junior engineers, organized knowledge-sharing sessions, managed API contracts and backend integrations, researched and integrated new technologies, drove Agile practices, and introduced AI-assisted development tools to streamline workflows and improve code quality.

iOS Consultant at Eurisko Mobility

November 1, 2021 - October 14, 2025

Spearheaded the refactoring of legacy Objective-C codebases to modern Swift, architected features using VIPER and VIP patterns for scalability, implemented SonarQube for static analysis, and consistently delivered complex features under tight deadlines while improving post-release quality. Engineered reactive solutions using RxSwift for data binding and asynchronous operations.

iOS Engineer at Mul Iframes

March 1, 2019 - October 14, 2025

Ramped up on Swift and developed features with UIKit to improve UI responsiveness and user experience, gained strong experience with Git and Agile workflows, and contributed to multiple projects simultaneously.

Senior iOS Engineer at Onova Holding AG

September 1, 2021 - Present

Led end-to-end development of key features, improving user engagement and reducing post-release bugs. Adopted Kotlin Multiplatform to share business logic across iOS and Android, increasing code reuse and speeding feature delivery. Conducted regular code reviews, refactoring to reduce technical debt, and led architectural improvements to enhance modularity, testability, and long-term maintainability. Collaborated with backend, product, and design teams to deliver high-quality features. Mentored junior engineers and organized knowledge-sharing sessions, acting as primary contact for API contracts and backend integrations. Researched and integrated new technologies to keep the app at the forefront of the platform. Drove Agile practices and introduced AI-assisted development tools to streamline workflows and improve code quality.

iOS Consultant at Eurisko Mobility

November 1, 2021 - October 14, 2025

Refactored legacy Objective-C codebases to modern Swift, reducing technical debt and improving performance. Architected features using VIPER and VIP patterns for scalability. Drove code quality via rigorous reviews and SonarQube static analysis, resulting in fewer post-release bugs. Delivered complex features under tight deadlines and enabled more robust mobile solutions. Engineered reactive data binding with RxSwift.

iOS Engineer at Mul Iframes

March 1, 2019 - October 14, 2025

Developed iOS features using UIKit, improving UI responsiveness and user experience. Gained strong experience with Git and Agile workflows, contributing to multiple projects with high adaptability.

Senior iOS Engineer at O :onova Holding AG

September 1, 2021 - Present

Led end-to-end development of key features, improved user engagement and reduced post-release bugs. Adopted Kotlin Multiplatform to share business logic across iOS and Android, increasing code reuse and speeding feature delivery. Conducted regular code reviews and refactorings to reduce technical debt and maintain a clean, scalable codebase. Led architectural improvements to enhance modularity, testability, and long-term maintainability. Collaborated with backend, product, and design teams to ensure cohesive system design and deliver high-quality features. Mentored junior engineers and organized knowledge-sharing sessions, increasing team productivity. Served as primary contact for API contracts and backend integrations, ensuring smooth development processes. Organized knowledge-sharing sessions on advanced iOS topics to upskill the team. Researched and integrated new technologies to keep the app at the forefront of the platform. Drove Agile best practices to enhance collaboration and

iOS Consultant at Eurisko Mobility

November 1, 2021 - October 14, 2025

Spearheaded refactoring of legacy Objective-C codebases to modern Swift, improving performance. Architected new features using VIPER and VIP patterns to ensure long-term scalability and clean separation of concerns. Drove a culture of high code quality by performing rigorous code reviews and implementing SonarQube for static analysis, resulting in fewer bugs post-release. Consistently delivered complex features under tight deadlines, exceeding client expectations and solidifying the company's reputation for on-time delivery. Engineered reactive solutions using RxSwift for data binding and asynchronous operations.

iOS Engineer at Mul Iframes

March 1, 2019 - October 14, 2025

Quickly ramped up on Swift, expanding expertise in modern iOS development. Developed features with UIKit, improving UI responsiveness and user experience. Gained strong experience with Git version control and Agile workflows. Contributed to multiple projects simultaneously with high adaptability.