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Hajar E.HE

Hajar E.

Senior iOS Developer | Swift | SwiftUI 💻 🚀

€560/day
Paris 19e Arrondissement, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Hajar

Senior iOS Developer with several years of experience in the design, development, and maintenance of high-traffic consumer mobile applications.
Specialized in Swift and SwiftUI, with proven expertise in software architecture, modularization, and continuous integration (CI/CD).

🎯 Technical Excellence & Software Quality: Strong code quality culture, structured code reviews, continuous improvement, accessibility, and adherence to Apple standards.

🎯 Collaboration & Agile Environment: Comfortable in Agile Scrum environments within international multidisciplinary teams (Product Owners, Android developers, QA, Design, Management). Strong ability to communicate, prioritize, and streamline interactions between teams.

🎯 Performance & User Experience (UI/UX): Performance optimization to enhance user experience, interface fluidity, and continuous improvement of user experience through a data-driven approach.

🎯 Mentoring & Coaching: Proven experience in coaching and upskilling iOS developers, with a benevolent technical leadership approach.
  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Paris 19e Arrondissement (up to 50km)

Experience

  • Europcar Mobility Group
    Software Engineer & iOS Developer
    March 2021 - Today (5 years and 5 months)
    Paris, France
    Mission:
    • iOS Development: Design, development of new features, and maintenance of the application in Swift / Swift UI
    • Lifecycle & SwiftUI: Full development piloting and migration of the architecture to SwiftUI.
    • DevOps & CI/CD: Build management and deployment via Bitrise, TestFlight, and App Store Connect.
    • Quality & Performance: Crash monitoring (Sentry/Crashlytics), scalability optimization, and code review.
    • Cross-functional Collaboration: Synergy with Product, Design, and Backend departments for feature delivery.
    • Agility: Participation and facilitation of agile ceremonies (Daily, grooming, sprint planning, demo, retrospective…)
    • Technical Leadership: Team mentoring, definition of guidelines, and writing architecture documentation.


    Technical Stack:
    Swift / UIKit / SwiftUI
    Architecture: MVVM, Clean Code, Snapshot Tests, Unit Tests, UI Tests - API: REST API
    Tools: Salesforce, Jira Confluence, A/B Testing, Didomi, AppsFlyer, Adobe Suite, Batch notifications
    Security: PSD2, GDPR & Tracking Transparency
    CI / CD: Bitrise, Jenkins, SonarQube, Gitlab, Xcode Cloud, Fastlane
    Deployment: TestFlight, AppStore, Crashlytics, Google Firebase, SauceLabs
    SwiftUI Clean Architecture UI/UX Design MVVM Gitlab CI/CD
  • Stellantis
    Software Engineer & iOS Developer
    AUTOMOBILE
    January 2020 - March 2021 (1 year and 2 months)
    Paris, France
    Mission:
    • iOS Development: Development and evolutionary maintenance of mobile applications in accordance with the technical specifications of the tender.
    • App Performance: Analysis of performance and usage indicators (downloads, installations, abandonment rate) and optimization of application performance.
    • Collaborationwith Product, QA, and Backend teams to analyze user feedback and improve features.
    • Monitoring: Implementation of monitoring, management of production incidents, and crash analysis via Crashlytics to improve application stability.
    • Application Maintenance: Bug fixing, participation in non-regression testing, and validation of fixes before production release.
    •Agility: Participation in Agile ceremonies and management of AppStore releases


    Technical Stack:
    Swift, Cococapods, URL Session, Basic Auth
    Architecture: MVC, Clean Code
    CI / CD: Bitrise, SonarQube, Github
    Deployment: TestFlight, AppStore Connect, inHouse Deployment
    Swift SwiftUI Gitlab CI/CD
  • EDF
    Software Engineer & iOS Developer
    SOFTWARE PUBLISHING
    January 2019 - January 2020 (1 year)
    Paris, France
    Mission:
    • iOS Development: Design and development of new features in compliance with business and regulatory requirements.
    • App Performance: Monitoring of KPIs (conversion rate, retention, crash rate) and optimization of loading times and user journey fluidity.
    •Collaborationwith Product, QA, Security, and Backend teams to implement reliable and secure user journeys.
    •Monitoring: Integration of monitoring tools, crash analysis, and incident tracking via Firebase Crashlytics and application logs.
    • Application Maintenance: Anomaly correction, continuous improvement, and participation in functional and technical testing campaigns.
    •Agility: Participation in Agile ceremonies (Scrum), release management, and App Store submission tracking.

    Technical Stack:
    Swift, Alamofire, OAuth2
    Architecture: MVVM, Clean Architecture
    CI / CD: GitLab CI, Fastlane
    Deployment: TestFlight, AppStore Connect
    Swift

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Education

  • Master "Project Manager in Information Systems Design and Mobile Development"
    IMIE Paris
    2018

Skill set

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