Senior Frontend Engineer Mobile Apps

Job Description:

We 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. Merkles 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 16000 employees Merkle operates in 30 countries throughout the Americas EMEA and APAC. For more information visit .

Who 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 Responsibilities:

• 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

Your profile:

Required Skills & Experience:

• 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 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)

Nice to Have:

• Experience in regulated industries particularly financial services or banking
• Familiarity with Swift/SwiftUI or Kotlin/Jetpack Compose for native development
• Knowledge of micro-frontend architectures
• Experience with security-conscious development (OWASP certificate pinning biometric auth)

Languages:

• German: Fluent (B2 or above) working language of the team
• English: Business proficient
• French or Italian: Advantageous given our multilingual product scope

Why choose dentsu

Global Reach with Local Expertise: Join a network that spans 145 countries with over 70000 talentedemployees. Collaborate with bright minds worldwide and gain insights from diverse industries andmarkets.
Innovation at Our Core: For over 120 years we have been pushing boundaries to connect brands withtheir audiences through cutting-edge technology creativity and transformative solutions.
Commitment to Impact: We focus on driving meaningful outcomes for our clients and theircommunities whether through increasing revenue influencing behavior change or fostering positiveorganizational culture.
Collaborative Network: Work alongside six global brands all united in delivering highly integrated andscaled transformation solutions.

These are some of the things we offer:

25 days of holidays
2 volunteer days for charitable activities
Mental 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-being
40-hour week & overtime compensation
Flexible working hours model (flextime)
Independent home office management
State-of-the-art creative office space with ergonomically equipped workstations
Pet friendly offices (Zurich and St. Gallen)
Full access to Dentsu Academy on-site learning sessions online language courses
Referral bonus program
Workation possibility
Team events: company parties monthly breakfasts aperos

#LI-MERKLE #LI-SOFI

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