Senior Backend Engineer, AdTech

Responsibilities

• 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 using MongoDB, Redis, and Algolia.
• Ensure software quality through automated testing (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 Systems, or Auction/Bidding Systems.
• Strong software engineering principles including Object-Oriented Design, SOLID, 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.
• Knowledge of security best practices, including OAuth2 and JWT.
• Strong DevOps mindset with experience in monitoring, logging, and observability.

About the Company

Redcare Pharmacy is Europe’s No.1 e-pharmacy, 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”.