saiefeddine hayouni

- Led the development of new features for the Renault mobile app, including keyless vehicle control (lock/unlock, lights, horn) and state-of-charge monitoring via Live Activities. - Designed and shipped a Virtual Key system, enabling secure mobile-based car access. - Built an Apple Watch extension to control the vehicle and receive real-time notifications. - Developed an interactive guide feature using camera-based scanning to streamline user support access. - Migrated complex logic from Combine to async/await, improving app clarity and reducing error-prone code, especially for HVAC, remote start, and vehicle diagnostics. - Spearheaded adoption of SPM for dependency management and Tuist for project modularization. - Implemented a dynamic theme management system across multiple app targets.

- Maintained and evolved Sodexo’s iOS application, ensuring feature expansion and stability in production environments. - Developed new features for Oeneo’s enterprise app, applying MVVM architecture and full RxSwift integration for a reactive and modular codebase. - Collaborated closely with cross-functional teams to meet high standards in performance, security, and UX. - Contributed to continuous integration flows using GitLab CI and enhanced test coverage.

- Designed, developed, and maintained native iOS applications using MVVM architecture, RxSwift/RxCocoa, protocol-oriented programming, and dependency injection with Swinject. - Built and maintained modular iOS frameworks (Pods) to ensure reusability and streamlined feature integration across projects. - Refactored and decomposed monolithic libraries into scalable, independent modules, enhancing maintainability and build efficiency. - Implemented data retrieval and configuration flows using Firebase Remote Config, enabling dynamic updates without app redeployments. - Developed and integrated secure online payment validation features using Swift and MVVM best practices. - Added SSL pinning capabilities to core connection libraries to strengthen app security. - Conducted code reviews, providing feedback on architecture, performance, and code quality. - Contributed to the Agile workflow, actively participating in daily stand-ups, backlog grooming, sprint planning, and retrospectives. - Applied reactive programming paradigms to manage complex UI interactions and data flows efficiently. - Ensured up-to-date and clear technical and functional documentation throughout the development lifecycle.

Worked on multiple native iOS applications (Swift and Objective‑C) for the healthcare and education sectors, including medical and nursing student apps. Joined a 15-person agile team to deliver secure, multilingual apps with quiz engines, data persistence, and high user interactivity. Key Contributions & Projects: ✅ Pflege App (Swift): - Designed for nursing students to quickly access curated medical knowledge - Developed quiz module using protocols, delegates, and subclassing - Integrated CoreData, implemented REST API communication layer, and fixed memory leaks - Setup CI pipelines with Crashlytics and unit tests using XCTest ✅ KScore App (Obj‑C/Swift): - A tool for oncologists to calculate febrile neutropenia risk (MASCC score) - Developed a static framework and reusable quiz engine - Migrated legacy UI to support iPhone X screen layout ✅ SurviveMed App (Swift): - Medical dictionary and orientation tool for students - Integrated multi-target builds, Crashlytics, SonarQube, and CI/CD with Jenkins - Created full test coverage with unit and UI tests in XCTest ✅ Netter App (Obj‑C): - Updated and maintained app helping students select proper medication - Contributed to bug fixes and UI improvements

Worked as an iOS Engineer on native apps using Swift and Objective-C. Participated in the full development cycle—from UI design with Storyboards and Auto Layout to API integration, testing, and App Store readiness. Focused on user-centric features such as QR scanning, geo-notifications, online payments, and real-time updates. Key Projects & Contributions: ✅ Le Club Bio (Swift/Obj‑C) - Built an e-commerce app for organic product loyalty and store geolocation - Implemented barcode scanning, QR code purchase tracking, and store notifications using geofencing - Integrated Google Maps SDK with custom pins and distance-based alerts - Used Alamofire and RESTful APIs for real-time data sync - Integrated third-party analytics library for displaying earned points ✅ HajziLine (Swift) - Developed a booking app for vacation homes and cottages - Integrated PayFort for online payments - Built calendar-based booking UI with support for categories and detail views - Applied Alamofire, MapKit, and UIKit to deliver a responsive UX ✅ Projeqtor (Swift) - Created a project management app with task tracking and user assignments - Implemented notifications, status updates, and custom UI components - Built interfaces using UITableView, UICollectionView, and UIScrollView - Enabled RESTful communication for syncing task states