iOS App Developer (f/m/d)

ZEAL Network SE is a dynamic, international group of companies that has been creating exciting and innovative lottery experiences for over 20 years. As Germany’s largest provider of online lotteries through our brands LOTTO24 and Tipp24, and a trusted partner of Spain’s ONCE, the second-largest national lottery, we’re shaping the future of the lottery industry. We are passionate about driving innovation, as demonstrated by our newest brands, Freiheit+ and Traumhausverlosung, which bring fresh and exciting dreams to life. Additionally, through ZEAL Ventures, we invest in inspiring e-commerce start-ups like Omaze and DAYMADE, fueling fresh ideas and opportunities.
Our team of 300+ professionals from diverse backgrounds is united by a visionary mindset, a passion for collaboration, and a commitment to inspire dreams. At ZEAL, we empower our people to think ambitiously and work together toward a shared purpose: helping people imagine and achieve their aspirations.

As our iOS App Developer (f/m/d), you’ll join our team to help shape the future of mobile lottery experiences. You’ll play a key role in evolving our iOS app by implementing robust features in Swift, building beautiful user interfaces with SwiftUI and UIKit, and delivering a smooth, accessible experience that millions trust.

Your tasks:

• Develop and maintain high-quality native iOS applications using Swift, UIKit and SwiftUI.

• Contribute to developing new features in SwiftUI, while continuing to support existing UIKit components.

• Take ownership of the iOS development lifecycle — from ideation and implementation to testing and release.

• Collaborate closely with testers, UX designers, and product owners in your direct team, and work with backend, frontend, and DevOps developers across other teams to deliver end-to-end features.

• Contribute to evolving the architecture and improving the maintainability and scalability of the codebase.

• Monitor performance and stability with Firebase Crashlytics, and explore opportunities to enhance observability with tools like Xcode Instruments.

• Stay up to date with the latest iOS platform updates, frameworks, and development trends (e.g. SwiftUI, new SDK features, architectural patterns).

• Participate in code reviews, mentor colleagues, and help uphold quality standards across the team.

What you offer us:

• You’re a collaborative team player who thrives in a cross-functional team with UX, product, and QA specialists, and you’re comfortable working with developers from other teams to deliver end-to-end features.

• You bring at least 3 years of hands-on experience developing native iOS apps with Swift and UIKit.

• Practical experience with SwiftUI and an interest in growing that skill.

• Solid understanding of iOS architecture patterns such as MVC, MVVM, and Clean Architecture.

• You write testable code and are comfortable writing Unit and UI tests using tools like XCTest and XCUITest.

• Familiarity with app release processes, App Store Connect, and continuous integration using GitHub Actions or similar.

• Experience working with RESTful APIs, JSON, and modern networking libraries.

• Strong English communication skills, both written and spoken.

• Detail-oriented with a good eye for UI/UX and accessibility principles.

• Bonus: Experience with logging, monitoring and alerting tools (e.g. Grafana), mobile tooling (Fastlane), cross-platform frameworks (Kotlin Multiplatform), or API infrastructure (Kong Gateway) would be a plus

What We Offer:

• State-of-the-art technologies and an agile environment (Check our Tech Radar: Tech Radar: https://lotto24.github.io/tech-radar/)

• A modern, dynamic culture grounded in the success of a leading-edge e-commerce company.

• A talented team of ambitious, like-minded colleagues where your knowledge and ideas truly make an impact.

• Ongoing personal growth, supported by an annual development budget of €1,500 to invest in your professional development.

• Trust and autonomy, no micromanagement, just confidence in your ability to deliver and excel.

• Flexible work options with a hybrid setup focused on results.

• Unlimited vacation days in addition to your yearly 30-day vacation allowance.

• Opportunity for workations abroad using our WorkFlex tool.

• Monthly mobility allowance of €30 to use on the mobility option of your choice (e.g., the Deutschlandticket), plus access to a company bike leasing program.

• Company pension scheme, provided in partnership with Degura, to support your future financial security.

• Subsidized EGYM WELLPASS membership, with a contribution of only €25 per month, giving you access to a wide range of gyms and sports options across Germany.

• Quarterly company events, along with regular team activities and informal gatherings, a favorite being our Healthy Tuesday lunches or Treat Thursdays in the office!

Sounds exciting? Great! We\'re looking forward to receiving your online application.