Senior iOS Engineer - Lead Travel App Modernization (Hybrid)

Sunweb Group; Rotterdam; Hybrid; EUR 54,000 - 78,000; Full time

Benefits offered by this job

Hybrid work model

Office in Rotterdam & Girona

Holiday discounts

Job summary

Sunweb Group is seeking a Senior iOS Engineer to own features from initial design through release and production monitoring. You will modernise a long-standing iOS app while preserving stability and quality valued by customers.

You will join Team Cuba – Mobile, with a mix of engineers across Girona and Rotterdam, working flexibly in a hybrid setup. Expect independent ownership from day one.

Qualifications

• Several years (5+) of strong Swift experience in production applications at meaningful scale.
• Production experience with SwiftUI.
• The ability to navigate and evolve legacy UIKit code.
• Automated testing as a standard part of your development process.
• Experience with Git workflows, code reviews and continuous integration.
• Mobile release-management experience using App Store Connect and TestFlight.
• A solid understanding of REST APIs and Swift concurrency.
• Experience integrating third-party SDKs or APIs, ideally including payment services.
• Experience with observability, crash triage and release automation such as Fastlane.
• Professional working proficiency in English.
• A proactive, pragmatic and low-ego ownership mindset.

Responsibilities

• Build and evolve customer-facing iOS experiences using Swift and SwiftUI.
• Coordinate with Android and backend engineers for cross-platform consistency.
• Own features end to end: refinement, implementation, testing, release, monitoring.
• Act as a technical reference for iOS through code reviews and architecture decisions.
• Improve release automation and feedback loops using GitHub, Fastlane, TestFlight, Firebase and New Relic.
• Contribute to API design and integrate services such as payments, excursions and transfers.
• Use modern coding tools to improve productivity and code quality.

Skills

Swift

SwiftUI

UIKit

Testing

Git workflows

App Store Connect

TestFlight

REST APIs

Payments integration

English

Ownership mindset

Tools

GitHub

Fastlane

Firebase

New Relic

Xcode

App Store Connect

TestFlight

Job description

Sunweb Group is seeking a Senior iOS Engineer to own features from initial design through release and production monitoring. You will modernise a long-standing iOS app while preserving stability and quality valued by customers.

You will join Team Cuba – Mobile, with a mix of engineers across Girona and Rotterdam, working flexibly in a hybrid setup. Expect independent ownership from day one.