Job Description
We are looking for a Principal Engineer to join our AdTech tribe in Berlin.
You will act as a technical leader within our Demand Adtech Domain, driving the architectural vision of our next-generation AdTech products. This platform empowers restaurants and local shops to promote themselves and reach new customers at a massive will play a pivotal role in a geographically distributed tribe of over 14 squads. While our squads move quickly with a "we build it, we run it" principle, your role is to ensure these solutions are cohesive, scalable, and future-proof. You will bridge the gap between business goals and technical execution, optimizing the customer experience across more than 10 million orders per day.
Your Mission:
1. Collaborate closely with Engineering and Product to define technical goals and deliver high value to stakeholders and customers.
2. Lead architecture discussions across domains and tribes, representing the tribe in reviews and identifying improvements.
3. Set high engineering standards through mentorship (especially for Senior and Staff engineers) and by leading with best practices.
4. Drive future-oriented technical decisions via RFCs and similar tools, aligning teams on scalable solutions and improvements.
5. Conduct regular reviews on reliability, scalability, and security at the tribe level.
6. Champion Agentic coding practices across engineering teams, identifying adoption opportunities and establishing guidelines that improve developer productivity and system resilience.
Qualifications
7. 15+ years of building and delivering scalable, distributed systems using microservices, APIs, and data processing (streaming & batch).
8. Strong expertise in cloud infrastructure with deep AWS knowledge as well.
9. Solid understanding of storage systems (SQL, NoSQL, caching layers) and streaming and data pipelines.
10. Familiarity with observability and monitoring tools (, Grafana, DataDog) with a strong focus on scalability, reliability, and latency.
11. Proven ability to lead technical initiatives across teams within a large engineering organization, mentor Senior and Staff engineers, and influence architecture at scale.
12. Excellent written and verbal English, capable of clearly explaining complex technical concepts to both technical and non-technical stakeholders.
13. Hands-on experience with agentic coding tools and workflows (, Claude Code, Cursor, Copilot), with a track record of driving adoption and building engineering best practices around AI-assisted development.
Nice to have
14. Experience with AdTech systems, including low-latency ad serving, measurement and attribution pipelines, and large-scale auctioning and bidding systems.