Senior Back End Developer Kotlin Java

At deltaconX , we simplify regulatory compliance with a unified SaaS platform that streamlines transaction reporting across EMIR, MiFIR, SFTR, REMIT, MAS, HKMA, and more. Since our launch in 2013, we’ve built a solid and stable Java-based monolith. In 2022, we began transforming our architecture using Kotlin (2+) and Micronaut to build modern, modular services for all new features.

As our client base continues to grow rapidly, so does the demand on our system. With 10X growth year over year in daily transaction volume , we are entering a new phase of engineering—scaling our product to ensure performance, reliability, and maintainability under sustained, enterprise-level load.

We are looking for a Senior Developer who brings both experience and vision to help us evolve our platform to meet these demands.

Your Impact

You will play a key role in transforming a production-proven solution into a highly scalable, distributed platform that serves enterprise clients across the globe. This includes actively shaping architectural decisions, optimising performance, and contributing to the gradual migration away from a monolithic foundation.

Your Responsibilities

• 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 modernise 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.

• Neue Features

• Maintenance, Bugfixing

• Dokumentation

• Organisation

• Meetings