Senior Engineer, FullStack, Retail Media/AdTech Solutions (m/f/d)

Role overview

This is a senior fullstack engineering position dedicated to retail media and advertising technology solutions. The role sits within an established engineering organization based in Cologne, Germany, operating at an expert career level within frontend and fullstack development. The work centers on building scalable systems that connect advertisers with on-site retail audiences and support commercial growth across digital channels.

Responsibilities

- Design and develop fullstack services and frontend applications that power retail media and adtech products - Build advertising experiences integrated into the customer journey, focusing on performance, reliability, and usability - Partner with product, data, and platform teams to deliver campaign management, targeting, and measurement capabilities - Contribute to architectural decisions that balance scalability, latency, and maintainability across the adtech stack - Mentor fellow engineers and uphold engineering quality through code review, automated testing, and clear documentation

Requirements

- Several years of experience as a senior fullstack engineer with strong frontend depth - Hands-on background in retail media, adtech, e-commerce platforms, or comparable high-traffic environments - Proficiency with modern web frameworks alongside backend service development - Understanding of core advertising concepts such as campaign delivery, audience targeting, or ad measurement - Solid grasp of engineering practices including CI/CD, observability, and code quality standards - Comfort working in a senior individual contributor role within an expert engineering career track

Benefits and work setup

- Permanent full-time position scheduled at 40 hours per week - Remote-friendly engineering setup with a Cologne, Germany base - Senior role aligned with an expert software engineering job profile