Senior iOS Developer (SwiftUI / UIKit / Offline-first)

About the role

A global SaaS company building field service management software is hiring a Senior iOS Developer in Medellín. Its mobile apps are used daily by field technicians across the UK, Australia, New Zealand and North America, often with poor or no connectivity. You will design, maintain and evolve high-performance apps on a codebase combining SwiftUI and UIKit, helping modernize it so apps keep working when the connection drops.

Key responsibilities

• Design and implement features in SwiftUI and UIKit with clean, testable and scalable code.
• Integrate SwiftUI into UIKit screens and vice versa using UIHostingController.
• Optimize view performance by controlling what triggers view re-evaluation.
• Take part in refactors and migrations, such as Storyboards/UIKit to SwiftUI.
• Apply dependency injection to decouple components and simplify testing.
• Implement local persistence and sync strategies for offline use.
• Build asynchronous flows with async/await and critically review AI-generated code.
• Work with product, design and QA, and take part in code reviews.

Required profile

• Solid understanding of the SwiftUI lifecycle and what triggers view evaluation.
• Experience with UIKit and Storyboards, and on a mixed SwiftUI + UIKit project including UIHostingController.
• At least one completed refactor or codebase migration.
• Working knowledge of dependency injection, including at least one common DI library.
• Experience with local databases such as SQLite or GRDB, and/or a NoSQL solution.
• Experience building apps that work locally with poor or no connectivity.
• Regular use of AI tools in development and an understanding of their limits, especially with async/await.
• Advanced English.

Nice to have

• Advanced Swift Concurrency (actors, structured concurrency) and Combine.
• XCTest and UI tests, and mobile CI/CD experience.
• Data conflict resolution and sync strategies.
• App Store publishing and maintenance experience.

What we offer

• Permanent contract with all legal benefits.
• Competitive salary.
• Private health insurance.
• Relocation bonus to Medellín.
• On-site role in Medellín with parking.