SeniorFullstackEngineer,AdTech(m/f/d)

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 a Senior Fullstack Engineer (m/f/d) in the Retail Media Ad Solutions area , you will play a critical role in designing and building high-performance, scalable AdTech solutions that power our growing Retail Media ecosystem. You'll work across the stack, from backend services to customer-facing interfaces, with a strong focus on clean architecture, data performance, and user-centric development. Working closely with your cross-functional team, you’ll help turn complex business needs into robust, end-to-end technical solutions that deliver measurable impact. About your tasks: * System Architecture & Engineering: Develop and optimize Node.js/TypeScript-based microservices , focusing on performance, modularity, and scalability. Contribute to architectural decisions that improve system maintainability and reliability. * Frontend Development: Build and maintain React applications using Next.js (Pages Router) and Material-UI. Implement advanced form logic using Formik and JSONSchema validation. Ensure exceptional user experiences through responsive, accessible, and high-performance UI. * Data & Messaging Systems: Integrate and optimize high-throughput data systems using MongoDB , Redis , and Algolia for real-time ad delivery and insights. Work with BullMQ and RabbitMQ to handle reliable, distributed message queuing and background processing. * Cross-Functional Collaboration: Partner with Product, Design, and Analytics teams to deliver end-to-end Retail Media features. Participate in sprint planning, technical reviews, and solution discovery