Principal Engineer - Authentication/Authorization & Accounting

We are on the lookout for a Principal Engineer to join the AAA Tribe, Tech Foundation Vertical on our journey to always deliver amazing experiences. 

As a member of the Tech Foundation Team, you’ll support Delivery Hero’s rapid innovation and growth. You’ll work on foundational systems that enable faster feature development, security, and reliability across our global engineering community. Every enhancement you make will contribute to our teams' ability to build, scale, and deliver quality features—ultimately impacting millions of users worldwide.

In this team you will:

• 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, representing the tribe in reviews, identifying improvements, and challenging 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.

What you need to be successful 

• 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 tools like Grafana, Prometheus, with a strong focus on scalability, monitoring, and reliability.

• proven ability to lead technical initiatives across teams, work independently or collaboratively, and empower others through pragmatic decision-making.

• Excellent in written and verbal English, capable of clearly explaining complex technical concepts to both technical and non-technical stakeholders.

• Experience in handling Tier1 mission critical high traffic services

• You’ve built complex, high-quality applications, and have a strong knowledge of Domain Driven Design and microservice architecture with kubernetes.

• You’re proficient in selecting from best practice Design Patterns and Design Principles when  building your Software Architectures and Algorithms

• Flexible and open-minded personality 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 in maintaining a solution that has multi regional setup with very high SLA (99.99 or above)

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.

What’s in it for you

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.

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