Leuven, Flanders, Belgium Employment

act digital is hiring a Senior Application Architect

About the Role

act digital is looking for a Senior Application Architect to strengthen its mobile platforms division. In this role, you will contribute to the design, implementation, and evolution of complex application architectures with a specific focus on mobile ecosystems and providing iOS technology leadership.

What You'll Do

  • Lead the implementation of application architecture across multiple platforms and teams.
  • Enhance and optimise the organisation’s information systems by expanding and refining architectural components.
  • Identify and promote reusable infrastructure and data-modelling assets.
  • Manage database architecture, including selecting and designing storage systems.
  • Support both application development and long-term maintenance.
  • Shape the technical roadmap and direction of the iOS platform.
  • Design and implement complex, high-impact platform features and architectural improvements.
  • Influence architectural decisions relating to modularisation, scalability, performance, and security.
  • Safeguard and evolve coding standards, development practices, and architectural guidelines.
  • Mentor developers and support their technical growth.
  • Provide in-depth code and architecture reviews with structured, constructive feedback.
  • Promote clean code, effective testing practices, and engineering excellence.
  • Align with Android teams on cross-platform principles and architectural consistency.
  • Work with UX, backend, security, and architecture stakeholders to ensure cohesive end-to-end solutions.
  • Contribute to broader mobile strategy and technical discussions beyond iOS.
  • Evaluate emerging technologies, frameworks, and platform evolutions.
  • Convert long-term platform vision into actionable technical roadmaps.
  • Identify opportunities to simplify, modernise, and innovate within mobile architecture.

What We're Looking For

  • 5+ years of experience designing and implementing application architecture.
  • 8+ years professional iOS development experience with ownership of complex applications.
  • Strong expertise in Swift, including SwiftUI and UIKit.
  • Experience with modular architectures and Swift Package Manager.
  • Advanced understanding of networking (URLSession, Codable, async/await).
  • Familiarity with iOS design patterns (MVVM, Coordinator, DI).
  • Understanding of accessibility and inclusive mobile design.
  • Strong awareness of mobile security (e.g., certificate pinning).
  • Solid knowledge of iOS release pipeline and App Store processes.
  • Proficiency with Git-based workflows (GitHub/Bitbucket).
  • Experience with CI/CD environments.
  • Analytical and conceptual thinking.
  • Broad ICT architectural knowledge.
  • IT infrastructure and security awareness.
  • Software development fundamentals and process-driven thinking.
  • Tactical and strategic planning capabilities.
  • Knowledge of Agile methodologies and practices.
  • Experience with scaled Agile environments (e.g., SAFe).
  • Experience with iOS SDK, Xcode, macOS development environment.
  • Must hold a valid work permit if non-EU.
  • Must hold a valid residence permit.

Technical Stack

  • Swift, SwiftUI, UIKit, Swift Package Manager, URLSession, Codable, async/await
  • MVVM, Coordinator, DI, iOS SDK, Xcode, macOS
  • Git, GitHub, Bitbucket, CI/CD

Team & Environment

You will collaborate closely with architects, database designers, development teams, analysts, and product stakeholders.

Required Skills
SwiftSwiftUIUIKitSwift Package ManagerURLSessionCodableasync/awaitMVVMCoordinatorDIModular ArchitectureiOS DevelopmentApplication Architecture
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10+ years experience
About company
act digital

Act Digital is a consulting and technology expertise company created in 2006, focused on accompanying clients on their digital transformation challenges. Their offerings are structured around Software Delivery, Infrastructure & Cloud Computing, Agile IT Performance, and Business Performance.

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Job Details
Department Information Technology
Category mobile
Posted 14 days ago