Senior iOS Engineer - Data Team at Feverup

Hey there! We’re Fever, the world’s leading tech platform for culture and live entertainment. Our mission? To democratize access to culture and entertainment. With our proprietary cutting-edge technology and data-driven approach, we’re revolutionizing the way people engage with live entertainment. Every month, our platform inspires over 300 million people in +55 countries (and counting) to discover unforgettable experiences while also empowering event creators with our data and technology, helping them scale, innovate, and enhance their events to reach new audiences. Our results? We’ve teamed up with major industry leaders like Netflix, F.C. Barcelona, and Primavera Sound, presented international award-winning experiences, and are backed by several leading global investors! Impressive, right? To achieve our mission, we are looking for bar-raisers with a hands-on mindset who are eager to help shape the future of entertainment! Ready to be part of the experience? Now, let’s discuss this role and what you will do to help achieve Fever’s mission. Fever's mobile app is one of the main ways users explore and book experiences in their cities. Helping them find relevant events easily and enjoy a smooth, personalized journey through the app is a key part of delivering a great product. We're looking for a Senior iOS Engineer with a strong product mindset to join the Data Team and help power the systems that make discovery and personalization smarter inside the app. This role sits at the intersection of iOS development, user behavior insights, and product intelligence, ensuring that the app not only looks great and performs smoothly, but also understands what users care about and helps them find the right events at the right time. You won't just ship features — you'll own them end-to-end: shaping the idea, building it, defining what success looks like, measuring adoption, and iterating based on real user signals. You'll work closely with Product, Backend, and Data teams to improve how we capture and use in-app signals, enabling better recommendations, more relevant discovery surfaces, and a continuously improving user experience. The scope You'll be part of the Data Team, working on the mobile foundations that enable better discovery, personalization, and product understanding within the iOS app. Rather than focusing only on user-facing features, a big part of your work will be making sure the app is structured to capture reliable user interaction signals, support AI recommendation systems, and allow teams to continuously improve the discovery experience based on real usage. You'll collaborate closely with Backend, Product, and Data teams to ensure new and existing app surfaces are: • Properly instrumented • Designed with personalization in mind • Technically prepared to evolve as our AI systems grow This role combines hands-on iOS development with ownership over the quality, reliability, and evolution of the mobile data layer, helping turn user behavior into better in-app experiences at scale. Key responsibilities • Own features end-to-end: partner with Product to shape what gets built, ship it, define success metrics, measure adoption post-launch, and iterate based on results. • Design and maintain a robust, scalable mobile instrumentation layer to capture high-quality user interaction data. • Ensure the app provides the right signals to power AI recommendation and discovery systems, making event discovery smarter and more relevant. • Collaborate with Product, Backend, and Data teams to build measurable and data-informed features, ensuring discovery surfaces continuously improve. • Contribute to shared libraries and best practices for mobile development, data quality, and scalability. • Understand the technical trade-offs of different solutions and design implementations that scale for millions of users. About you • Strong development experience in Swift and a solid understanding of the iOS SDK, including UIKit, SwiftUI, and Combine. • Strong product mindset — you care about the why behind features, take ownership of outcomes (not just code), and are comfortable defining success metrics and measuring adoption. • Experience building features that support recommendations, discovery, search, or personalization is a strong plus. • Comfortable working with data-driven features, understanding how to capture and leverage signals to improve user experience. • You write clean, maintainable code with a focus on testing, reliability, and scalability. • Collaborative team player who can communicate clearly with engineers, product managers, and data professionals. • You know how to deliver code from development to production and are familiar with CI/CD pipelines and mobile release processes. • Proficient in English, able to participate effectively in cross-functional discussions and planning. • Comfortable using AI tools in your daily workflow and able to evaluate and leverage them effectively to improve productivity and decision-making. It would be a plus if you… • Have hands-on Android development experience (Kotlin, Jetpack Compose) — we'd love someone who can occasionally contribute across both platforms, though iOS is the primary focus. • Have worked on marketplace consumer apps: recommendation engines, feeds, or AI-driven personalization in a consumer app. • Have experience with analytics, feature flags, or experimentation frameworks on mobile. • Have contributed to high-traffic, data-heavy apps where performance and scalability are critical. • Are comfortable collaborating beyond iOS, helping define tracking and data contracts with backend or data teams. Benefits & Perks • Opportunity to have a real impact in a high-growth global category leader • 40% discount on all Fever events and experiences • Home office friendly (anywhere in Spain) • Responsibility from day one and professional and personal growth • Great work environment with a young, international team of talented people to work with • Health insurance and flexible remuneration with 100% tax exemption through Cobee • English and Spanish lessons • Gympass membership • Possibility to receive in advance part of your salary by Payflow • Competitive compensation package consisting of base salary, variable bonus, and stock options Thank you for considering joining Fever. We cannot wait to learn more about you! If you want to learn more about us: Fever's Blog | Tech.Eu |TechCrunch Fever is committed to creating an inclusive and diverse workspace where everyone's background and ideas count. Our main goal is to find the best possible talent regardless of place of birth, racial or ethnic origin, gender, gender identity, religion, opinion, sexual orientation, disability, pregnancy, marital status, age or caring responsibilities. We encourage everyone to apply! If you require any kind of accommodation during the selection process please contact our Talent team so we can help you by providing a welcoming and seamless journey. If you want to know more about how Fever processes your personal data, click here Fever - Candidate Privacy Notice