Sr. Frontend Developer (m/f/div) German Speaking

Sr. Frontend Developer

Germany, Switzerland - hybrid

This role is part of our Experience & Engineering team in Germany. We combine technology and experience design to create emotive yet conversion-focused ideas, products, and campaigns at scale and speed. Our specialty is digital experiences and communication that change perceptions and shape new behaviours to make a difference in the market.

 

JOB PURPOSE

As a Senior Frontend Engineer, you will be responsible for the development and maintenance of various e-commerce platforms, with a strong focus on delivering seamless user experiences and robust frontend solutions. If you have experience building modern web applications using HTML, CSS, and JavaScript frameworks, and understand how frontend development integrates with digital marketing tools, site management, and overall platform architecture, this could be a great opportunity for you.

 

KEY RESPONSIBILITIES

• Develop and maintain e-commerce applications using HTML, CSS, JavaScript, and modern frontend frameworks like React;
• Contribute to the development of reusable components and common web technologies essential for building seamless multi-channel experiences;
• Build responsive and high performance web applications optimised for mobile, tablet, and desktop;
• Perform regular website testing to ensure functionality, including logging issues, detailing bugs and recommending improvements to PMs;
• Manage daily application updates, edits, changes, or asset uploads within our content management system;
• Work with PMs to support new business sales and pitches;
• Understand security/privacy principles and GPDR;
• Develop test plans and troubleshoot issues related to eCommerce;
• Assist with website conversion and analytics;
• Monitoring and managing website uptime and performance;
• Designing and testing pages on different browsers/devices/clients;
• Implement advanced debugging techniques and use browser developer tools.
  
  

WHAT WE ARE LOOKING FOR

• Professional working proficiency in German and English;
• 5+ years of experience in frontend development.
  You have a profound understanding of CSS, semantic HTML (including concepts like layout, specificity, cross browser compatibility, and accessibility) and various JavaScript concepts.
• Hands-on experience with modern frontend frameworks (e.g., React, Vue.js, or similar) and server-side rendering frameworks (e.g., Next.js, Nuxt.js) is a plus;
• Strong knowledge of component-based architecture and reusable UI patterns;
• Experience working with APIs, including RESTful and GraphQL, for data fetching and integration with backend services;
• Familiarity with headless CMS platforms and frontend frameworks for e-commerce solutions;
• General experience of building, launching and maintaining stores and general knowledge of the admin system;
• Excellent communication skills and ability to work closely with design and backend teams;
• Development experience with responsive layouts for desktop, tablet and mobile;
• Experience implementing and debugging 3rd party integrations and building custom solutions where required;
• Strong testing and debugging skills using browser developer tools and testing libraries (e.g., Jest, Cypress);
• Experience developing for accessibility, SEO, and performance optimization;
• A passion for staying up-to-date with the latest frontend technologies and best practices.
  
  

WE OFFER

• Flexible, hybrid working policy (1-2 days at the office, depending on location);
• Company pension scheme.
• Lease bike options / JobRad and 25% subsidy for the Deutschlandticket.
• Occasional breakfast/lunch at the office, Smoothie Tuesdays.
• Stay happy and healthy with a contribution to your health through the OpenUp platform;
• €30 per month - You can use the flexible package for digital food stamps and/or fitness providers/sport clubs/massage studios, internet costs, and/ or public transport.
• Future Bens - Exclusive access to sustainable, healthy products at attractive deals.
• Social events, plenty of opportunities to connect with colleagues through organised activities and celebrations.
• A reputation for doing good. DEPT® has been a Certified B Corp® since 2021 and named ‘Agency of the Year’ at both The Lovies and The Webby Awards.
• Awesome clients. Whether big or small, local or global — at DEPT® you’ll get the opportunity to work with clients of all sizes and across all