Senior Backend Engineer, AdTech

Responsibilities

• Design, develop, and maintain scalable backend services and APIs supporting retail media products
• Build and operate distributed systems processing 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 using MongoDB, Redis, and Algolia
• Ensure software quality through automated tests (TDD/BDD preferred)
• Design and implement distributed caching strategies and performance optimizations
• Ensure systems meet reliability, performance, scalability, and security requirements

Requirements

• Experience building products in Retail Media, AdTech, MarTech, E-commerce, Search, or Recommendation systems
• Hands-on experience with Ad Serving Platforms, Campaign Management, or Auction/Bidding systems
• Strong knowledge of Object-Oriented Design, SOLID Principles, Design Patterns, and API Design
• Experience building and operating cloud-native applications on AWS, GCP, or Azure
• Practical experience with Infrastructure as Code (IaC) and CI/CD pipelines
• Proficiency in security best practices including OAuth2 and JWT
• Understanding of observability tools including monitoring, logging, and tracing
• Strong DevOps mindset and ownership of the software lifecycle

About the Company

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".