Senior Frontend Engineer - Mobile Apps

Design, develop, and maintain frontend features for our iOS and Android mobile applications. Implement and extend multilingual (DE/FR/IT/EN) user interfaces using internationalisation (i18n) frameworks and localisation best practices. Collaborate with UX/UI designers to translate Figma designs into pixel-perfect, accessible components. Ensure code quality through unit testing, integration testing, and code reviews. Optimise application performance across devices and screen sizes, with a focus on Swiss banking security standards. Contribute to the shared component library and design system used across all Raiffeisen digital products. Work in an agile team using Scrum/Kanban, participating in sprint planning, retrospectives, and demos. Coordinate with backend teams to design and consume RESTful and GraphQL APIs. Monitor, debug, and resolve issues in production, ensuring high availability and user satisfaction. Stay up to date with emerging frontend technologies and champion best practices within the team.

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.

• 3+ years of professional experience in frontend or mobile development

• Proficiency in React Native for cross-platform iOS and Android development

• Strong command of TypeScript and modern JavaScript (ES6+)

• Experience with React.js or a comparable modern web framework (Vue, Angular)

• Solid understanding of iOS and Android platform guidelines (HIG / Material Design)

• Practical experience with i18n/l10n libraries (e.g. i18next, react-intl, FormatJS)

• Familiarity with state management solutions (Redux, Zustand, MobX, or similar)

• Experience with RESTful APIs and GraphQL

• Understanding of CI/CD pipelines and version control (Git)

• Knowledge of web accessibility standards (WCAG 2.1 AA)