> Markdown version of [/jobs/ext/1493747-senior-software-engineer-kotlin-java-aws-m-w-d](https://www.wearedevelopers.com/jobs/ext/1493747-senior-software-engineer-kotlin-java-aws-m-w-d). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # (Senior) Software Engineer - Kotlin, Java, AWS (m|w|d) - **Company:** idealo internet GmbH - **Location:** Berlin, Germany - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Amazon Web Services, Software Quality, Code Review, Relational Databases, Web Development, Python (Programming Language), PostgreSQL, MySQL, Pair Programming, Salesforce.Com, SAP (Applications), Data Streaming, TypeScript, Web Applications, Data Processing, AWS Lambda, Kotlin, Odoo, Apache Kafka, Data Management, Asynchronous Programming, Terraform - **Published:** July 30, 2026 - **Apply:** https://www.adzuna.de/details/5819801400 ## About the Role Must-haves * 7+ years of experience in web application development, including at least 5 years working with Kotlin/Java. * Strong knowledge of AWS architecture and Infrastructure as Code, for example with Terraform. * Solid knowledge of relational databases such as PostgreSQL or MySQL, as well as event messaging, event streaming, and asynchronous communication, for example with Aiven Kafka. * You think in end-to-end ownership and can communicate technical concepts clearly, including to non-technical stakeholders. * You enjoy working in a team, sharing knowledge, giving constructive feedback, and actively contributing through pair programming, code reviews, and collaborative problem-solving. * You have the confidence to speak up and challenge ideas constructively, paired with an openness to different perspectives. Nice-to-have * Experience in ERP, accounting, or finance environments. * Experience developing Lambda functions, for example data processing using Python or TypeScript. * Good German-speaking skills. ## Description As part of our Clickout-to-Revenue team, you work at the core of our business model: retailers pay for qualified referrals ("clickouts") to their shops. Your work ensures that this monetization runs in a technically sound, high-performing, and transparent way - making a significant contribution to idealo's growth. The position is available in full or part-time. About your new role End-to-End Ownership * You develop and operate business and web applications running in the AWS Cloud. * Together with your team, you take full responsibility across the entire value chain (YBYO): architecture, infrastructure, development, testing, security, deployment, monitoring, on-call duty, and maintenance. Product Focus: Monetization Processes and Services * You develop services that support how our business models are processed and billed. Key components include the Odoo ERP system, internal tools for master data management, and interfaces to Salesforce and SAP. * Innovative business models require innovative solutions. That is why you work closely with stakeholders such as our accounting department, sales team, account management, and other cross-functional engineering teams. Technical Excellence * You actively contribute ideas to improve processes, care deeply about code quality, and continuously develop your skills. We support you with a range of professional development opportunities., * 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 . * 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! ## Related Videos - [Recruitment Reinvented: Bold strategies and the $10K signing incentive](https://www.wearedevelopers.com/videos/1068-recruitment-reinvented-bold-strategies-and-the-10k-signing-incentive) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Why Kotlin is the better Java and how you can start using it](https://www.wearedevelopers.com/videos/661-why-kotlin-is-the-better-java-and-how-you-can-start-using-it) ## Related Articles - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies) - [Finding Jobs in Germany](https://www.wearedevelopers.com/magazine/375-finding-jobs-in-germany) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [How to Find Tech Jobs in Berlin](https://www.wearedevelopers.com/magazine/291-how-to-find-tech-jobs-in-berlin)