About Redcare Pharmacy:
As Europe’s No.1 e-pharmacy, Redcare Pharmacy 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 begin your #Redcareer today.
About the role: As Senior Backend Engineer, AdTech (m/f/d), you will be shaping and evolving our AdTech platform and operating backend services that power advertising products across sponsored search, sponsored products, campaign management, ad serving, targeting, reporting, and measurement with a strong focus on scalable architecture, engineering best practices, and performance optimization. You will serve as the technical leader across cross-functional teams and ensure the successful delivery of high-performance advertising solutions. You will collaborate closely with theProduct Managers, Retail Media business team and other stakeholders to turn complex business challenges into robust technical solutions that enable our Retail Media ecosystem to grow and scale.
About our tech stack: Node.js, TypeScript, Koa.js (primary) + NestJS, MongoDB (incl. aggregation pipelines), Redis, BullMQ, RabbitMQ, Algolia, Docker, Kubernetes (GKE), CI/CD (CircleCI + ArgoCD), Google Cloud. Integrations with ad-serving platforms. React/Next.js on the frontend.
Job DescriptionAbout your tasks:
- Design, develop, and maintain scalable backend services and APIs supporting retail media products.
- Build and operate distributed systems that process large volumes of advertising, campaign, auction, and analytics data.
- Develop low-latency, highly available services for ad serving, targeting, bidding, and campaign execution.
- Optimize real-time and high-throughput data systems, integrating with MongoDB, Redis, and Algolia to support fast ad delivery and campaign insights. Work with BullMQ and RabbitMQ for reliable message queueing across distributed services.
- Ensure software quality through automated tests (TDD/BDD preferred).
- Design and implement distributed caching strategies, cache invalidation mechanisms, and performance optimizations.
- Ensure systems meet reliability, performance, scalability, and security requirements.
About you:
- You have experience building products in Retail Media, AdTech, MarTech, E-commerce, Search, or Recommendation systems.
- You demonstrate seniority through ownership, technical excellence, proactive problem-solving, and the ability to independently drive initiatives from concept to production.
- You have hands-on experience building Ad Serving Platforms, Campaign Management Systems, Search Advertising Solutions, Auction or Bidding Systems, Attribution and Reporting Platforms.
- You posses strong software engineering principles Object-Oriented Design, SOLID Principles, Design Patterns, Testing Strategies, API Design.
- You have experience building and operating cloud-native applications on AWS, GCP, or Azure.
- You have practical experience with Infrastructure as Code (IaC), CI/CD pipelines, and automated deployment practices.
- You are well-versed in security best practices, including authentication and authorization (OAuth2, JWT), encryption, secrets management, and secure software development practices.
- You understand the importance of observability and have experience working with monitoring, logging, tracing, and alerting solutions.
- You bring a strong DevOps mindset and take ownership of software throughout its lifecycle, from development and deployment to operation and continuous improvement.
Skills Required
- Experience with Node.js and TypeScript
- Experience with Koa.js or NestJS
- Experience with MongoDB (including aggregation pipelines)
- Experience with Redis
- Experience with BullMQ or RabbitMQ
- Experience with Algolia
- Experience with Docker and Kubernetes (GKE)
- Experience with CI/CD tooling (CircleCI, ArgoCD)
- Experience with Google Cloud or AWS or Azure
- Experience building products in Retail Media, AdTech, MarTech, E-commerce, Search, or Recommendation systems
- Hands-on experience building Ad Serving Platforms, Campaign Management, Auction/Bidding, or Attribution/Reporting systems
- Strong software engineering fundamentals: OOD, SOLID, design patterns, API design, testing strategies
- Practical experience with Infrastructure as Code and automated deployment practices
- Knowledge of security best practices including OAuth2, JWT, encryption and secrets management
- Experience with observability: monitoring, logging, tracing, alerting
- DevOps mindset and ownership of software lifecycle from development to operations
- Familiarity with React/Next.js (frontend integration)
What We Do
As Redcare Pharmacy - formerly known as Shop Apotheke Europe - we put care at the heart of everything we do, guiding people through their health to help turn bad days into better ones. We are Europe’s people-first pharmacy. Start your #Redcareer now! Let's grow together. We are an international company that is currently active in seven countries in Europe and is growing rapidly. Our headquarters as well as on of our distribution centre are located in Sevenum in the Netherlands near the German border. Our other distribution centre is in Milan, Italy. In total, we have locations in Cologne, Berlin, Munich, Tongeren, Warsaw, Milan, Lille and Eindhoven. We are always looking for new colleagues - people who not only get involved in our international team, but who want to actively take on responsibility and who want to grow together with us as a strong partner
