Principal Engineer - AdTech

As the world’s pioneering local delivery platform, our mission is to deliver an amazing experience, fast, easy, and to your door. We operate in over 70+ countries worldwide, powered by tech, designed by people. As one of Europe’s largest tech platforms, headquartered in Berlin, Germany. Delivery Hero has been listed on the Frankfurt Stock Exchange since 2017 and is part of the MDAX stock market index. We enable creative minds to deliver solutions that create impact within our ecosystem. We move fast, take action and adapt. No matter where you're from or what you believe in, we build, we deliver, we lead. We are Delivery Hero.

Job DescriptionWe 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 scale.You 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:

• Collaborate closely with Engineering and Product to define technical goals and deliver high value to stakeholders and customers.
• Lead architecture discussions across domains and tribes, representing the tribe in reviews and identifying improvements.
• Set high engineering standards through mentorship (especially for Senior and Staff engineers) and by leading with best practices.
• Drive future-oriented technical decisions via RFCs and similar tools, aligning teams on scalable solutions and improvements.
• Conduct regular reviews on reliability, scalability, and security at the tribe level.
• Champion Agentic coding practices across engineering teams, identifying adoption opportunities and establishing guidelines that improve developer productivity and system resilience.

• 15+ years of building and delivering scalable, distributed systems using microservices, APIs, and data processing (streaming & batch).
• Strong expertise in cloud infrastructure with deep AWS knowledge as well.
• Solid understanding of storage systems (SQL, NoSQL, caching layers) and streaming and data pipelines.
• Familiarity with observability and monitoring tools (e.g., Grafana, DataDog) with a strong focus on scalability, reliability, and latency.
• Proven ability to lead technical initiatives across teams within a large engineering organization, mentor Senior and Staff engineers, and influence architecture at scale.
• Excellent written and verbal English, capable of clearly explaining complex technical concepts to both technical and non-technical stakeholders.
• Hands-on experience with agentic coding tools and workflows (e.g., Claude Code, Cursor, Copilot), with a track record of driving adoption and building engineering best practices around AI-assisted development.

Nice to have

• Experience with AdTech systems, including low-latency ad serving, measurement and attribution pipelines, and large-scale auctioning and bidding systems.

As the world’s pioneering local delivery platform, our mission is to deliver an amazing experience, fast, easy, and to your door. We operate in over 70+ countries worldwide, powered by tech, designed by people. As one of Europe’s largest tech platforms, headquartered in Berlin, Germany. Delivery Hero has been listed on the Frankfurt Stock Exchange since 2017 and is part of the MDAX stock market index. We enable creative minds to deliver solutions that create impact within our ecosystem. We move fast, take action and adapt. No matter where you're from or what you believe in, we build, we deliver, we lead. We are Delivery Hero.

Ensuring you and all our Heroes are looked after, happy, and healthy is always on the menu. Because if you’re in good shape, then we’re in good shape.

• Make the most of our hybrid working model and join the team for face-to-face connection and collaboration in our beautiful Berlin campus 2 days a week

• We offer 27 days holiday with an extra day on 2nd and 3rd year of service

• We will support you in developing yourself and your career growth opportunities: 1.000 € Educational Budget, Language Courses, Parental Support and access to the Udemy Business platform to explore a variety of online courses.

• Get moving and release those wonderful, mind-boosting endorphins: Health Checkups, Meditation, Gym & Bicycle Subsidy

• Cash. Dough. Cheddar. Whatever you call it, we’ll help you with it: Employee Share Purchase Plan, Sabbatical Bank,  Public Transportation Ticket Discount, Life & Accident Insurance, Corporate Pension Plan

• The power of getting together over some food is unrivaled. Here are a few ways to help you do that. All the yum: Digital Meal Vouchers, Food Vouchers, Corporate Discounts. Courses.

• Wondering what relocating to Berlin is like? In this article, we’ve put together 10 things you should know about moving to Berlin  and how Delivery Hero can support you. You can also visit our relocation hub and check out more information about moving to Berlin.

• Ready to prepare for your interview? Check out the list of the 5 most common interview questions and answers created in collaboration with our recruiters.

Ready to join our team? If you’re excited to grow, collaborate and be part of the world’s leading delivery platform, we’d love to hear from you. Apply today!

We believe diversity and inclusion are key to creating not only an exciting product, but also an amazing customer and employee experience. Fostering this starts with hiring - therefore we do not discriminate on the basis of racial identities, religious beliefs, color, national origin, gender identities or expressions, sexual orientations, age, marital or disability statuses, or any other aspect that makes you, you.

We encourage you to let us know if you need any accommodations or specific accessibility support to ensure a smooth interview experience—just let us know with an email to our Inclusion Officer at [email protected] it in your application.

Severely disabled applicants with equal qualifications will be given preferential consideration.

You're welcome to share your pronouns (he/she/they) right from the start so we can address you respectfully from our first contact.