Principal Engineer - Authentication/Authorization & Accounting

Overview

Principal Engineer - Authentication/Authorization & Accounting. We are Delivery Hero, a leading local delivery platform operating in 70+ countries. We are headquartered in Berlin, Germany, and listed on the Frankfurt Stock Exchange. We are seeking a Principal Engineer to join the AAA Tribe, Tech Foundation Vertical, supporting rapid innovation and growth by building foundational systems that enable faster feature development, security, and reliability across our global engineering community.

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.
• Regularly review 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

• 10+ years of building and delivering scalable, distributed systems using microservices, APIs, and data processing (streaming & batch).
• Proficient in Golang/Java, with strong knowledge of storage systems like DynamoDB, MySQL, PostgreSQL, BigQuery and Redis.
• Skilled in AWS, GCP, Terraform, Kubernetes, and infrastructure as code, with experience in cloud cost optimization.
• Familiar with monitoring tools like Grafana and Prometheus, with a focus on scalability and reliability.
• Proven ability to lead technical initiatives across teams, work independently or collaboratively, and empower others through pragmatic decision-making.
• Excellent written and verbal English, able to explain complex technical concepts to technical and non-technical stakeholders.
• Experience handling Tier1 mission-critical high-traffic services.
• Strong knowledge of Domain-Driven Design and microservice architecture with Kubernetes; proficient in selecting Design Patterns and Design Principles for software architectures.
• Flexible, open-minded, and comfortable working in a multicultural environment and in English.

Nice to have

• Experience in the AAA domain (Authentication/Authorization and Accounting).
• Experience in SaaS companies.
• Experience maintaining multi-regional setups with very high SLA (99.99% or above).

What’s in it for you

• Hybrid working model with 2 days a week on-site at our Berlin campus.
• 27 days holiday plus an extra day on years 2 and 3 of service.
• Educational budget of €1,000, language courses, parental support, and Udemy Business access for online courses.
• Health initiatives: health checkups, meditation, gym & bicycle subsidies.
• Employee benefits: share purchase plan, Sabbatical Bank, public transport discounts, life & accident insurance, pension plan.
• Social benefits: digital meal vouchers, food vouchers, corporate discounts.

We believe diversity and inclusion are key to an exciting product and experience. We do not discriminate on race, religion, color, national origin, gender identity or expression, sexual orientation, age, marital status, or disability. If you need accommodations or accessibility support for interviews, please include it in your application. You are welcome to share your pronouns (he/she/they) from the start so we can address you respectfully.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology

Industries

• Software Development and IT Services and IT Consulting

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