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idealo internet GmbH —Berlin
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(Senior) Backend Developer – Product Creation & Assignment (m/w/d)

idealo internet GmbH -
Berlin

Direkt bewerben

Details zur Stelle

Vollzeit
vor 6 Stunden

Leistungen

Firmenevents
Kostenlose Verpflegung
Kostenfreies oder vergünstigtes Deutschland-Ticket

Qualifikationen

Spring Boot
Kubernetes
Spark
MongoDB
Java
AWS
Docker
Machine Learning
S3
DynamoDB
Künstliche Intelligenz
Python
Spring

Vollständige Stellenbeschreibung

As a (Senior) Backend Developer in our Product Creation & Assignment Team, you will help us build the systems behind the automated expansion of the idealo product catalogue.

At idealo, products are the comparable entities users see on our platform: product pages where offers from different shops are grouped, enriched and made comparable. Our team builds systems that identify and create new products from various data sources and assign incoming shop offers to the right existing or newly created products.

We work on a modern, cloud-native stack combining JVM-based backend services with data-intensive AWS workflows: Java, Kotlin, Spring Boot, Kafka, MongoDB and EKS, as well as Python-based pipelines using MWAA, Lambda, Step Functions, DynamoDB, Glue Spark and S3. We also integrate ML models and GenAI components into our production systems and actively use AI tools such as Claude Code in our development workflow.

About your new role

You develop and operate backend services and data workflows for automated catalogue expansion and offer assignment, taking full lifecycle ownership from architecture through to production.
You work on systems that identify, create and enrich new products from various data sources, and improve the matching logic that links shop offers to the right idealo products.
You build with our core stack: Java/Kotlin, Spring Boot, Kafka, AWS, Kubernetes/EKS and Python-based pipelines (MWAA, Lambda, Step Functions, Glue Spark).
You ensure high software quality through automated testing, code reviews and observability, and use AI-assisted development tools thoughtfully.
You collaborate closely with Engineering, Product and Machine Learning Engineering, and share knowledge through reviews, pairing and documentation.

Skills & Requirements

Several years of experience in backend, platform or data-intensive software development with responsibility for production systems.
Strong hands-on experience in JVM backend development (Java or Kotlin, ideally Spring Boot) or Python-based data workflows, with good working knowledge of and willingness to contribute across both stacks.
Experience operating services in cloud-native environments, ideally with AWS, Kubernetes, Docker or serverless components.
Familiarity with event-driven or workflow-based architectures such as Kafka, Step Functions, MWAA/Airflow or ETL-like pipelines.
Clear communication skills, ability to work effectively in a cross-functional team, and fluent English. German is a plus.
You challenge assumptions respectfully and use data and reasoning to debate ideas—then fully commit once a decision is made to ensure alignment and momentum.

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 offers free organic breakfast, excellent free lunch (vegan and vegetarian), as well as free coffee, lemonades and after-work beer, in addition to the "standard foosball". It also has a fabulous rooftop terrace with view of the whole of berlin where you can network with colleagues from our group of companies.
In need of additional support in any areas of your life? We offer free counseling and support in all areas of life (professional, private, family, health, etc.) in cooperation with the pme-Familienservice.
You want full flexibility on your way to work and beyond? No problem with a job bike or Deutschlandticket - and it's environmentally friendly, too!
Want to keep yourself fit? We offer many different fitness and sports options, such as an Urban Sports or Gympass membership, to suit your personal needs.
And what else is there? Of course, success must be celebrated! In addition to team events, you can also expect big company events and other moments of organized connection with others in the company and your team throughout the year!

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