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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Backend Developer (Kotlin/Java) - Platform Scaling Specialist - **Company:** deltaconX AG - **Location:** Wien, Austria (Remote available) - **Experience:** Expert - **Salary:** €60,900.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Artificial Intelligence, Apache HTTP Server, Software as a Service, Continuous Integration, Programming Tools, Distributed Systems, Elasticsearch, Hibernate (Java), IntelliJ IDEA, Java Message Service (JMS), Spring Framework, PostgreSQL, MySQL, Service Design, Simple Object Access Protocol (SOAP), JetBrains, Postman, Apache Camel, Backend, Gitlab, Kotlin, Kubernetes, Rancher, Apache Kafka, Restful APIs, Service Stack, Elk Stack, Microservices - **Published:** August 4, 2026 - **Apply:** https://www.adzuna.at/details/5827317346 ## About the Role * You've scaled transaction-heavy, performance-critical systems in a SaaS or enterprise context. * You are fluent in Java and/or Kotlin, and you're comfortable working in a hybrid codebase transitioning from monolith to microservices. * You have hands-on experience with distributed systems, message-driven architecture (Kafka), and resilient service design. * You are confident working with Kubernetes-based deployments and know how to make systems observable and maintainable. * You understand modern CI/CD workflows and infrastructure-as-code, ideally with GitLab. * You enjoy collaborative environments with flat hierarchies and shared technical ownership. * You communicate clearly and effectively in English, both written and spoken. * Fluent German would be an advantage. * We can only consider applications of applicants from the European Union, Blue Card (issued in Austria) or Red White Red Card holders at this time. ## Description * Design and implement scalable, service-oriented solutions in Kotlin (2+) and Java (21), aligned with our growing performance and availability requirements. * Contribute to the platform's evolution by refactoring legacy components and improving the robustness of the system under increasing loads. * Collaborate across teams to modernize architecture and build new features that are resilient, observable, and horizontally scalable * Work with our technology stack: Kotlin (2+), Java (21), Spring Framework, Micronaut, Apache Kafka, Apache Camel, Apache Artemis JMS, Hibernate, Kubernetes, Helm, REST, SOAP, MySQL, PostgreSQL, Elasticsearch, and the Elastic ELK Stack. * Use modern developer tools like JetBrains IntelliJ + AI, Datagrip, Lens, Rancher, and Postman to streamline development. * Build and maintain CI/CD pipelines using GitLab to ensure rapid, safe, and repeatable deployments. * Take part in architectural discussions and influence key technology decisions as we continue scaling globally. Job Benefits * An interesting and varied job in a dynamic and ambitious company with flat hierarchies. * An international environment with the opportunity for continuous professional and personal development. * Flexible working hours with the option of working from home. * A modern office "myHive" in the Twin Towers on Wienerberg with excellent infrastructure as well as attractive benefits. We are dedicated to cultivating a fair and inclusive workplace rooted in trust and mutual respect. Embracing diversity is fundamental to our success, and we strive to build a team that reflects a broad range of backgrounds, perspectives, and talents. For this position, we offer a gross annual salary starting at EUR 60.900,-- according to the valid IT collective agreement with the willingness to overpay according to qualifications and professional experience. ## Related Videos - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [WeAreDevelopers LIVE - Modern DevOps for IoT Devices and More](https://www.wearedevelopers.com/videos/1805-wearedevelopers-live-modern-devops-for-iot-devices-and-more) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [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) - [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) - [Enabling automated 1-click customer deployments with built-in quality and security](https://www.wearedevelopers.com/videos/83-enabling-automated-1-click-customer-deployments-with-built-in-quality-and-security) ## Related Articles - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [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) - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)