Apple IOS Developer - Finance Sector - Leuven - ASAP Start - Freelance / CDI

  • Full-time

Company Description

As a Senior Full Stack Developer, you bring 5+ years of end‑to‑end application development, combined with deep expertise in iOS mobile engineering (8+ years).

You will design, develop, test, and deliver high‑quality mobile and web components while ensuring seamless integration with backend systems. You participate in the full application lifecycle — from design to deployment and long‑term maintenance.

Job Description

Full Stack Responsibilities

  • Design and develop front-end web architecture and user interactions.
  • Build back-end application logic, services, and API integrations.
  • Create and maintain databases and server environments.
  • Ensure cross-platform optimization, including mobile responsiveness.
  • Deliver clean, scalable, maintainable code from concept to final product.
  • Collaborate closely with designers to implement web & mobile design features.
  • Ensure solutions meet both technical requirements and end-user needs.

iOS‑Specific Responsibilities

  • Develop and maintain the  Mobile App in collaboration with:
    developers, analysts, testers, project leads, UX experts, product owners and Scrum Masters.
  • Ensure secure integration with backend systems in alignment with mobile security guidelines.
  • Apply modern iOS architecture and design patterns (MVVM, coordinators, dependency injection).
  • Oversee CI/CD integration, build pipelines, and app release processes.
  • Maintain high standards of quality, stability, performance, and security.
  • Review pull requests and promote best practices across the team.

Qualifications

Core Full Stack Skills

  • Strong experience with front-end (web) and back-end development.
  • API design and development.
  • CI/CD pipelines.
  • Mobile development principles.
  • Agile methodologies (Scrum, SAFe).

iOS Technical Skills

  • 8+ years of professional iOS development.
  • Excellent proficiency in Swift, including SwiftUI & UIKit.
  • Experience with Swift Package Manager, async/await, URLSession, Codable.
  • Strong experience integrating 3rd‑party libraries.
  • Solid understanding of iOS accessibility APIs.
  • Knowledge of mobile security practices (SSL pinning, secure storage, etc.).
  • Familiarity with the iOS release lifecycle.
  • Skilled with GIT (GitHub, Bitbucket).
  • Strong application of architectural patterns: MVVM, coordinator pattern, DI.

🧠 Soft Skills & Competencies

  • Analytical thinking & problem-solving mindset
  • Independent and proactive working style
  • Strong collaboration skills
  • Result‑driven and quality‑focused
  • Eager to learn & adapt
  • Can‑do attitude, resilient under changing priorities
  • Passion for coding and continuous improvement
  • Strong communicator in English (spoken & written)
  • Working knowledge of Dutch is required

🎓 Must‑Have Requirements

 

  • Mobile development background
  • Experience with Agile (Scrum/SAFe)
  • CI/CD experience
  • Dutch & English proficiency
  • Experience with:
    • Apple iOS SDK
    • Xcode
    • Apple macOS
    • Swift
    • GitHub / Bitbucket
    • MVVM architecture
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