At FDJ UNITED, we don't just follow the game, we reinvent it. FDJ UNITED is one of Europe's leading betting and gaming operators, with a vast portfolio of iconic brands and a reputation for technological excellence. With more than 5,000 employees and a presence in around fifteen regulated markets, the Group offers a diversified, responsible range of games, both under exclusive rights and open to competition. We set new standards, proving that entertainment and safety can go hand in hand. We're looking for bold people who are eager to succeed and ready to level-up the game. Join us in shaping the future of gaming. Are you ready to LEVEL-UP THE GAME?
Implementreal-time sportsbook experiences: odds/live data flows, navigation, analytics, localization, and media
Own quality end-to-end: unit tests, SwiftUI view tests, lint/format, CI feedback, and PR hygiene
Swift 5.10+, SwiftUI, iOS 17+, Xcode
Modular Swift Packages, feature-oriented modules composed through an integration layer
Factory (Container-based DI, test/preview-friendly registrations)




Networking & realtime:REST-style providers plus MQTT/WebSocket for live offering data
Testing:Swift Testing (preferred for new tests), ViewInspector for SwiftUI
SwiftLint, SwiftFormat, Git hooks, Jira, GitLab, Jenkins/CI, Fastlane
Solid commercial experience buildingproduction iOS apps or librariesinSwift
StrongSwiftUIskills: composition, navigation, state management, performance-aware UI
Comfortable withmodular Swift Packagedevelopment and multi-repo / multi-package dependency graphs
Experience writingunit testsand testing UI behavior (XCTest and/or Swift Testing)
Clear communication in English and confidence collaborating across squads
Comfort with GitLab, conventional PR reviews, and Jira-linked delivery
You write testable, maintainable Swift that fits existing KSP conventions
You improve live UX quality under real conditions: odds updates, navigation, betslip flows, and streaming
You leave the codebase healthier than you found

📌 Senior iOS Swift Engineer (Madrid)
🏢 FDJ UNITED
📍 Madrid