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

AlterSolutions

Leuven, Flanders, Belgium permanent

Posted: February 23, 2026

Required Skills

Job 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.

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.

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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