Fullstack Engineer, Retail Media / AdTech Solutions (m/f/d)

About your tasks: 

• Full-Stack Development: Build and maintain modern web applications using React, Next.js, and TypeScript, alongside Node.js-based backend services and REST APIs, delivering features across our Retail Media platform.

• Platform & Feature Development: Contribute to advertiser-facing products, including campaign management, self-service workflows, reporting dashboards, and integrations with advertising platforms.

• Data & System Integration: Work with MongoDB, Redis, and Algolia, and contribute to asynchronous processing and messaging using BullMQ and RabbitMQ, with support from experienced engineers.

• Collaboration & Engineering Quality: Work closely with Product, UX, and Engineering teams to deliver reliable features, participate in technical discussions, and contribute to testing, code reviews, and continuous improvements.

About you:

• You have professional experience in Full-Stack development, with hands-on skills in JavaScript/TypeScript, React, and Node.js.

• You have experience building and integrating REST APIs, working with databases, and developing modern web applications.

• You enjoy working across frontend and backend, take ownership of your work, and are comfortable learning new technologies.

• You value clean, maintainable code, automated testing, and collaborative engineering practices.

• Experience with AdTech, Retail Media, e-commerce, or advertising platforms (such as Kevel, Google Ad Manager, CitrusAd, or Topsort) is a plus, but not required.

• You're curious about AI-assisted development tools and emerging technologies and enjoy exploring how they can improve engineering workflows and products.

About your benefits:

In order to provide you with the best possible support for your individual needs - whether it‘s living a healthy life, having enough time for your family, or developing your skills - we offer a wide range of different, site-specific benefits:

• Sports: Stay healthy. Profit from a membership (M) package at Urban Sports Club, so that you can take advantage of a huge variety of sport offers.

• Work from Home: If your job does not require you to be present in the office, we can arrange the place you work from individually - even for up to 20 days a year anywhere in the EU.

• Mobility: We provide our employees with a fully costed Deutschland Ticket which can be used at any time.

• Personal development: Grow! We support and encourage your individual development through various in- and external trainings.

• Vacation: 30 days paid vacation per annum (plus another day on Rosenmontag) and the option to take unpaid vacation of up to 10 days (after one year working with us).

• Employee discount: You get a 10 % employee discount on all over the counter, beauty and personal care products in our online store & 20 % discount on nu3.