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Strong match if you are a senior backend-leaning engineer comfortable owning Kotlin services and Kafka pipelines, with enough React fluency to work across the stack at a Berlin-based product company (idealo internet GmbH), on-site rather than remote.
As a Senior Software Engineer focused on Kotlin, Kafka, and React at idealo internet GmbH in Berlin, a typical day centers on designing and shipping backend services in Kotlin, wiring reliable event flows with Kafka, and collaborating with frontend work in React. Expect code reviews, design discussions with product and platform teams, and production ownership of services that power comparison and e‑commerce traffic—not remote, so on-site Berlin collaboration is part of the rhythm.
Deepen production Kotlin (APIs, concurrency, testing), event-driven design with Kafka (producers/consumers, idempotency, observability), and solid React for full-stack delivery. Senior impact also means mentoring, clear design docs, and operational excellence. No certified training paths are listed in the provided cert data.
The listing marks remote as no; work is tied to Berlin, Germany.
The title highlights Kotlin, Kafka, and React for a senior software engineering role.
idealo internet GmbH in Berlin—Germany’s capital and largest city by population.
Senior Software Engineer (m|w|d) - Kotlin, Kafka, Reactidealoo internet GmbHBerlin, Berlin, Deutschland About This Position At idealo, you will be at the heart of our data-driven marketing efforts. You'll lead the development of a critical frontend application and contribute across the full stack using Kotlin, TypeScript, React, Kafka, and AWS. Your role involves designing, implementing, and maintaining robust microservices while ensuring seamless production deployment and continuous improvement. Core Duties Lead the development of our latest frontend application with React, Next.js, and Spring Boot. Design, implement, and maintain scalable microservices using Kotlin and TypeScript. Take end-to-end ownership from architecture to production deployment, monitoring, and continuous improvement. Shape technical direction through architectural decisions and long-term platform evolution. Improve our engineering platform by advancing CI/CD pipelines, observability, and Infrastructure as Code practices. Collaborate with marketing and engineering teams to deliver reliable tracking and billing systems while continuously raising engineering quality. What We're Looking For We are seeking a Senior Software Engineer with several years of professional experience in frontend development using TypeScript/JavaScript and backend development with Kotlin. Solid experience with React, Next.js, Spring Boot, and building RESTful APIs is required. Additionally, you should have experience with event-driven architectures, Kafka, and messaging patterns. About idealo internet GmbH idealoo internet GmbH is a leading online marketplace in Europe, offering millions of shopping decisions every day. We are committed to innovation and quality, providing our customers with the best possible shopping experiences through advanced technology and data-driven solutions. Next Steps To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there.
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