Senior Software Engineer - idealo internet GmbH

Team CRM Tech is responsible for delivering the technical infrastructure that enables idealo's CRM campaigns. We build and maintain systems that handle identity resolution, subscriptions, data flows, and message delivery, while ensuring GDPR compliance and supporting personalized user experiences. In Team CRM Tech, Data Engineers and Software Engineers collaborate closely to build end-to-end solutions that connect data pipelines, APIs, and user interactions.

About your new role

Design, implement, and maintain reliable and scalable software systems and data flows for CRM and user engagement use cases.

Collaborate with Data Engineers, Product Managers, and other stakeholders to deliver robust solutions that integrate across domains and teams.

Contribute to the team’s architecture and technical decision-making, ensuring high code quality and operational excellence.

Take ownership of services throughout their lifecycle, from design and implementation to monitoring and improvement.

Ensure best practices for testing, CI/CD, and cloud infrastructure are applied and continuously improved.

Support and mentor less experienced engineers by sharing knowledge, conducting code reviews, and fostering a collaborative team culture.

Explore and adopt new tools and technologies to improve development efficiency and system performance.

Skills & Requirements

Tech Skills

Strong experience in backend development with Java (Spring Boot) or Kotlin; experience with TypeScript is a plus.

Solid understanding of cloud - based architectures, preferably on AWS (e.g. Lambda, S3, Snowflake, Glue, SNS/SQS).

Familiarity with event - driven systems and tools such as Kafka, as well as microservice architectures.

Experience working with data pipelines, APIs, and data integration processes (schemas, transformations, ETL).

Hands-on experience with CI / CD pipelines , infrastructure as code (e.g. AWS CDK, Terraform), and monitoring.

Good knowledge of SQL and experience handling structured and semi-structured data.

Experience with Python or data engineering tools is a plus.

Mindset & Collaboration

The confidence to speak up and challenge ideas constructively, paired with openness to diverse perspectives.

You pursue ambitious goals, focus on outcomes, and are driven to achieve meaningful results for customers and the business.

You enjoy mentoring and supporting your peers while continuing to grow your own expertise.

At idealo you can expect

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.

And what about the office? Our office in the heart of Berlin offe