Principal Engineer - AdTech Specialist

Delivery Hero is Europe’s largest tech platform headquartered in Berlin, operating in over 70 countries. As a global leader in local delivery, we build high‑available solutions that enable partners—restaurants, local shops, and more—to attract and retain customers.

Job Description

We are looking for a Principal Engineer to join our AdTech tribe. As part of a geographically distributed squad of 16+ teams, you will help build next‑generation advertising solutions for the local delivery market, enabling partners to promote their best dishes and reach new clients.

About AdTech Tribe

The tribe focuses on high‑available advertisement solutions, serving vendors globally from LATAM to APAC via mobile and web applications. We deploy often, move quickly with cross‑functional squads, and build solutions optimized for high load, reliability, and low latency.

Responsibilities

• Collaborate closely with Engineering and Product to define technical OKRs and deliver high value to stakeholders and customers.
• Lead architecture discussions across domains and tribes, represent the tribe in reviews, identify improvements, and challenge the status quo.
• 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, cost‑efficiency, and security at the tribe level.
• Promote best practices, foster knowledge sharing, and contribute to an effective, scalable org structure aligned with delivery flow.

Qualifications

• 15+ years of building and delivering scalable, distributed systems using microservices, APIs, and data processing (streaming & batch).
• Deep expertise in AdTech systems, including low‑latency ad serving, measurement and attribution pipelines, large‑scale auctioning and bidding systems, fraud detection, and traffic quality.
• Strong expertise in cloud infrastructure (AWS focus), Kubernetes, Terraform, and infrastructure as code, with proven experience in cloud cost optimization.
• Solid understanding of storage systems (SQL, NoSQL, caching layers) and data pipelines.
• Familiarity with observability and monitoring tools (e.g., Kibana, Prometheus, DataDog) with a strong focus on scalability, reliability, and latency.
• Proven ability to lead technical initiatives across teams, mentor Senior and Staff engineers, influence architecture at scale, and empower others through pragmatic decision‑making.
• Excellent written and verbal English, capable of clearly explaining complex technical concepts to both technical and non‑technical stakeholders.

Benefits

Hybrid working model: 2 days a week in Berlin campus. 27 days holiday with extra days in subsequent years. 1,000 € educational budget, language courses, parental support, and access to Udemy Business.

Health and well‑being: Health check‑ups, meditation, yoga, gym & bicycle subsidy.

Financial: Employee share purchase plan, sabbatical bank, public transportation ticket discount, life & accident insurance, corporate pension plan.

Food & perks: Digital meal vouchers, food vouchers and corporate discounts.

Equal Opportunity

Delivery Hero is an equal‑opportunity employer. We do not discriminate on the basis of race, ethnicity, religion, gender, sexual orientation, age, disability, or any other protected characteristic. If you need accommodations during the interview process, please let us know.

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