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Lien MuguerciaLM

Lien Muguercia

iOS Developer | Swift ● SwiftUI ● UIKit ● AI

€600/day
1 project
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Lien

iOS Developer | Swift ● SwiftUI ● UIKit ● macOS


I turn yourideasinto concrete and functional **applications**.

Mobile developer specialized in the Apple ecosystem (iPhone, iPad, Apple Watch, and Mac), I design well-**thought-out** and user-**centric** apps.

Have an idea in mind, but don't know where to start? I can guide you from A to Z: fromreflectiontopublicationon the App Store, including **development**, minimalist **design**, in-app purchases, or even **AI integration**.

I enjoy working on:
  • Useful and concrete projects (productivity, well-being, daily life…)
  • MVPs (Minimum Viable Products)
  • Integrating APIs, AI, or automations

My goal: to make development accessible, fluid, and human.

Ready to launch your Apple development project?

Contact me for an initial discussion. We can schedule a video conference to review your project and see how I can assist you from idea to deployment.
  • Spanish

    Native or bilingual

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Nantes (up to 50km), Paris (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Marseille (up to 50km)

Experience

  • Lydia
    iOS Developer
    BANKING AND INSURANCE
    September 2025 - Today (11 months)
    Paris, France
    Participation in the development and evolution of the Sumeria application on iOS, with a focus on two functional areas:

    • PROF (Profile & Offers): development of features related to user profiles and offers within the app.
    • BAH (Bank & Account History): evolution of flows related to bank accounts and transaction history.

    Main responsibilities:

    • Development and integration of new iOS features.
    • Maintenance and improvement of existing functionalities.
    • Bug fixing and handling user feedback.
    • Contribution to the application's stability, quality, and reliability.
    • Collaboration with product, design, and backend teams to deliver coherent user journeys.
    iOS Cursor Swift SwiftUI Swift Concurrency
  • Leocare
    iOS Developer
    BANKING AND INSURANCE
    June 2021 - August 2025 (4 years and 2 months)
    Nantes, France
    At Leocare, I contributed to the daily evolution and stabilization of our iOS application:

    • Development of new features for the main app, from user needs to production release.
    • Gradual rollout of the migration to SwiftUI to modernize the interface and facilitate maintenance.
    • Continuous code improvement: migration from RxSwift to Combine, adoption of async/await and AsyncStream for more readable and reactive code.
    • Maintenance and dependency updates, cleanup of obsolete code.
    • Regular technology watch to stay updated on Apple's best practices and new features.
    • Implementation of GitHub Actions scripts to automate the deployment and testing of released versions.
    • Experimentations with various Apple frameworks (PassKit, WidgetKit) to explore new possibilities.
    • Collaboration on prototypes and mockups in Figma to optimize user experience.
    WidgetKit SwiftUI Swift Concurrency UIKit Github Actions
  • Digiposte
    iOS Developer
    BANKING AND INSURANCE
    June 2020 - June 2021 (1 year)
    Nantes, France
    On V3 of the Digiposte app, I participated in several key projects:
    • Major redesign of version 3: participation in restructuring the architecture to gain modularity and facilitate future evolutions.
    • User interface redesign: revision of user flows, implementation of more modern components consistent with the Digiposte brand guidelines.
    • Optimization of network calls with SwiftRx: smoother asynchronous handling, reduced latency, and improved resilience in case of errors.
    Swift Concurrency UIKit Swift (Programming Language) MVVM RxSwift

Reviews

5.0

Out of 1 rating

A

Activ

Phase 1 - Cadrage technique & fondations du MVP - Activ3

Reviewed on 2/20/2026

Excellent collaboration on a complex product and technical scoping phase. Lien quickly understood the project's DNA, challenged choices when necessary, while respecting the product vision. Lien also demonstrated an excellent understanding of the challenges, a real ability to structure, and a rare sense of product. The exchanges were always constructive, clear, and solution-oriented, with a genuine desire for alignment rather than blind execution. Serious, committed, and high-quality work. To recommend without hesitation.

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Education

  • Master's Degree in
    University of Girona MIIACS
    2011
    Master's Degree in
  • null
    University of Informatics Sciences
    2007

Skill set

Categories