Senior Backend Engineer- Seller Experience

About The Team

You will join our multi-disciplinary C2C Sellers team in Amsterdam as a Staff Backend Developer, reporting to the team’s Engineering Manager. Our tight-knit, cross-functional team includes Front-end, Mobile, Backend and Data Science engineers (plus product and design partners).

We focus on creating direct, measurable value for individual sellers — our mission is a smooth, quick and safe sale for a good price that gives sellers confidence to list again.

The team’s current priority is delivering a GenAI-powered ad placement flow that requires production-grade backend systems: real-time model serving, robust feature and event pipelines, low-latency APIs for FE/Mobile, and a safe experimentation infrastructure.

We take a data-driven, experimental, and Agile approach to product development with heavy use of A/B testing, and insights-driven feature research. .

What You'll Do

• Design and implement scalable, reliable, and maintainable software solutions.
• Write clean, efficient, and well-tested code using industry best practices.
• Mentor junior and mid-level developers
• Help to improve work in all areas: coding, processes, testing, tools, collaboration
• As an engineer, you’re not limited to Backend development, but will have the opportunity to collaborate with other technical stacks in our company Promote engineering practices within the team and across the organisation as a part of the Backend chapter
• Work collaboratively in a hybrid work model (at least once a week in the office)
• We will work with you to grow your skills and your career at Marktplaats.