(Senior) Backend Engineer - Java/Kotlin, AWS & Data Pipelines (m|w|d)

As part of our Clickout-to-Revenue team, you will work on one of idealo's most business-critical platforms. Every day, millions of user interactions must be processed reliably, accurately, and at scale to ensure transparent billing and trusted partnerships with our merchants., As a Senior Backend Engineer, you will design and evolve highly available backend services and data pipelines that power click redirection, fraud detection, and revenue processing while shaping the architecture and technical direction of one of idealo's core revenue platforms., * Design, build, and operate highly available backend services and data pipelines on AWS that power idealo's clickout and revenue processing.

• Take end-to-end ownership of your services following our "You build it, you own it" mindset-from architecture and infrastructure to deployment, monitoring, incident response, and continuous improvement.
• Develop scalable services for click redirection and reliable mechanisms to detect and filter invalid traffic, ensuring transparency and traceability.
• Build robust data pipelines that process merchant revenue data and make it available for downstream systems and our data platform.
• Drive technical improvements across architecture, engineering practices, and system reliability while proactively identifying and mitigating technical risks.
• Collaborate closely with your teammates through code reviews, pair programming, and knowledge sharing, while contributing to a culture of engineering excellence.

Must-have

• Strong professional experience developing backend applications with Java or Kotlin using Spring Boot.
• Experience building data pipelines in Python using AWS serverless technologies.
• Strong knowledge of AWS and modern cloud-native architectures.
• Experience with Infrastructure as Code (e.g. Terraform or CloudFormation) and container orchestration with Kubernetes.
• Strong experience working with relational and NoSQL databases (e.g. PostgreSQL, Aurora, MongoDB).
• Experience with event-driven architectures and Kafka or similar messaging technologies.
• A strong sense of ownership and the ability to make well-balanced technical decisions independently.
• Excellent collaboration and communication skills, with the ability to explain technical concepts to different audiences.
• Professional English proficiency.

Nice-to-have

• Experience working in an e-commerce or high-traffic consumer environment, * You want to further your education? We take your personal development goals seriously and, in addition to our idealo Learning Hub, eLearning offerings (e.g., Udemy), coaching & mediation, we also offer you the opportunity to benefit individually from additional learning and development budget.

idealo is a Berlin-based internet success story. Founded in 2000, we started with the mission of helping our users to make the best online buying decisions. 
Today, we are one of the leading product and price comparison platforms in Europe and one of the largest portals in the German e-commerce market. We achieved this by obtaining more than 2.5 million page impressions per day, 50.000 connected Online-Shops, and over 560 million product offers. With a strong focus on convenience, transparency, and technological expertise, we enable our partners to grow their business on idealo as a high-quality traffic and sales driver. 

As a member of our team, you can look forward to working with a large degree of freedom in an international and inspirational environment. We are located in the heart of Berlin but believe that we are happier and can work more effectively when the job fits our individual lives. That's why we offer our employees the freedom to choose their workplace. At idealo, we are convinced that flexibility is fundamental for hybrid working and offer permanent work from anywhere in Germany as well as temporary from abroad. 

We offer a unique idealo spirit. Your ideas are the driving force that moves our business forward. Not only our product portfolio is diverse, but also the people who work on it. We want you just as you are – regardless of origin, religion, gender, sexual orientation, or a degree of disability.