Senior iOS/Android Developer with German in Zürich

Job DescriptionWe Dream. We Do. We Deliver. Merkle, a dentsu company, powers the experience economy. For more than 35 years, the company has put people at the heart of its approach to digital business transformation. As the only integrated experience consultancy in the world with a heritage in data science and business performance, Merkle delivers holistic, end‑to‑end experiences that drive growth, engagement, and loyalty. Merkle's expertise has earned recognition as a "Leader" by top industry analyst firms, in categories such as digital transformation and commerce, experience design, engineering and technology integration, digital marketing, data science, CRM and loyalty, and customer data management. With more than 16,000 employees, Merkle operates in 30+ countries throughout the Americas, EMEA, and APAC. For more information, visit are we looking for? We are looking for a skilled and motivated Senior Frontend Engineer - Mobile Apps to join our cross‑functional digital product team. You will play a key role in building and maintaining our customer‑facing applications — spanning iOS, Android. You will work closely with UX designers, backend engineers, and product owners to deliver seamless, high‑quality experiences that meet the highest standards for accessibility, security, and performance.Key ResponsibilitiesDesign, develop, and maintain frontend features for our iOS and Android mobile applicationsImplement and extend multilingual (DE/FR/IT/EN) user interfaces using internationalisation (i18n) frameworks and localisation best practicesCollaborate with UX/UI designers to translate Figma designs into pixel‑perfect, accessible componentsEnsure code quality through unit testing, integration testing, and code reviewsOptimise application performance across devices and screen sizes, with a focus on Swiss banking security standardsContribute to the shared component library and design system used across all Raiffeisen digital productsWork in an agile team using Scrum/Kanban, participating in sprint planning, retrospectives, and demosCoordinate with backend teams to design and consume RESTful and GraphQL APIsMonitor, debug, and resolve issues in production, ensuring high availability and user satisfactionStay up to date with emerging frontend technologies and champion best practices within the teamYour ProfileSeveral years of experience (≥5 years) in native mobile development (Android and/or iOS)Excellent knowledge of Kotlin (Android) and/or Swift (iOS)Solid experience with Jetpack Compose and/or SwiftUI SwiftUIExperience with modern concurrency concepts (coroutines/flow, async/await, combine)Sound knowledge of mobile architectures (clean architecture, MVVM, MVI)Experience in connecting backend services and API integrationKnowledge of testing (unit and UI tests) and quality assuranceExperience with build tools and dependency management (Gradle, Swift Package Manager)Understanding of security and performance aspects in mobile appsExperience with CI/CD pipelines and app deployment (App Store / Play Store)Nice to HaveExperience in regulated industries, particularly financial services or bankingFamiliarity with Swift/SwiftUI or Kotlin/Jetpack Compose for native developmentKnowledge of micro‑frontend architecturesExperience with security‑conscious development (OWASP, certificate pinning, biometric auth)LanguagesGerman: Fluent (B2 or above) — working language of the teamEnglish: Business proficientFrench or Italian: Advantageous, given our multilingual product scopeWhy choose dentsu?Global Reach with Local Expertise: Join a network that spans 145 countries, with over 70,000 talented employees. Collaborate with bright minds worldwide and gain insights from diverse industries and markets. Innovation at Our Core: For over 120 years, we have been pushing boundaries to connect brands with their audiences through cutting‑edge technology, creativity, and transformative solutions. Commitment to Impact: We focus on driving meaningful outcomes for our clients and their communities, whether through increasing revenue, influencing behavior change, or fostering positive organizational culture. Collaborative Network: Work alongside six global brands all united in delivering highly integrated and scaled transformation solutions.Benefits25 days of holidays2 volunteer days for charitable activitiesMental Health: Benefit from 3 extra wellness days on top of your vacation days and a Mental Health First Aider and Employee Assistance program to support your well‑being40‑hour week & overtime compensationFlexible working hours model (flextime)Independent home office managementState‑of‑the‑art, creative office space with ergonomically equipped workstationsPet friendly offices (Zurich and St. Gallen)Full access to Dentsu Academy, on‑site learning sessions, online language coursesReferral bonus programWorkation possibilityTeam events: company parties, monthly breakfasts, aperosLocationZürichBrandMerkleTime TypeFull timeContract TypePermanentAbout dentsuFor over 120 years, innovation has been a core tenet of our offering – exploring new ways to reach, engage and nurture relationships with audiences. Together we drive a multiplier effect for clients at a global scale, through the development of Integrated Growth Solutions that are underpinned by our promise to clients: innovating to impact. Be a force for good. Sustainability is a vital part of our business and an important area of focus for our clients. We’re leading the way – helping to build a more sustainable planet. Dream loud. In this moment of transformation, we need our people to be fearless, embracing change and ambiguity, driven by the love for their work and excitement for the future. Team without limits. We create opportunities for connection and collaboration between our colleagues and clients, building a sense of belonging and having some fun along the way. Find out more about us Who we are Our Social Impact Our work #J-18808-Ljbffr