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 [Employer] 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.

About [Employer]:

As Europe’s No.1 e-[Employer] [Employer] is powered by passionate teams and cutting-edge innovation. We strive to create a healthy collaborative work environment where every employee feels valued and inspired to contribute to our vision “Until every human has their health”. If you’re seeking a career that offers purpose and aligns with your values join us and start your #Redcareer today.

About the role:

As a Full-Stack Software Engineer (m/f/d) in our Retail Media Ad Solutions team, you will help build and evolve the applications and services powering our growing Retail Media platform.

You'll work across the stack, from backend services and APIs to advertiser-facing interfaces, developing scalable, reliable, and user-friendly solutions. Working closely with experienced engineers, Product Managers, and UX Designers, you'll contribute to technical decisions, take ownership of features, and help shape the future of our in-house AdTech platform.

About the tech stack:

React, Next.js, TypeScript, Node.js, Koa.js, NestJS, MongoDB, Redis, BullMQ, RabbitMQ, Algolia, Docker, Kubernetes (GKE), Google Cloud Platform, CircleCI, ArgoCD, and integrations with modern ad-serving platforms.

While this is a remote position based in Germany, it may require occasional on-site collaboration at our offices in Berlin or Cologne, depending on business and team requirements.

Originally posted on [Employer]