> Markdown version of [/jobs/ext/1929640-senior-java-kotlin-backend-engineer-remote-core-platform](https://www.wearedevelopers.com/jobs/ext/1929640-senior-java-kotlin-backend-engineer-remote-core-platform). 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 Java/Kotlin Backend Engineer - Remote, Core Platform - **Company:** Coolpeople Technology - **Location:** Madrid, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Disaster Recovery, Spring Framework, Backend, Kotlin, Reactive Programming - **Published:** August 5, 2026 - **Apply:** https://www.buscojobs.com.es/senior-java-kotlin-backend-engineer-remote-core-platform-en-madrid-ID-365578766 ## About the Role The role focuses on backend systems written in Java/Kotlin, with Spring Framework and reactive programming., Ideal candidates have 3+ years in production backend development, strong Java skills, Kotlin fluency, and hands-on Reactor experience. #J-*****-Ljbffr ## Description Cool People Technology is seeking a Senior Backend Developer to help build a Disaster Recovery platform.The role focuses on backend systems written in Java/Kotlin, with Spring Framework and reactive programming.You will work on secure cloud-to-on-premise integrations and deployment processes in a fully remote, long-term collaboration.Ideal candidates have 3+ years in production backend development, strong Java skills, Kotlin fluency, and hands-on Reactor experience.#J-*****-Ljbffr ## Related Videos - [OpenAPI meets OpenAI](https://www.wearedevelopers.com/videos/1150-openapi-meets-openai) - [Back(end) to the Future: Embracing the continuous Evolution of Infrastructure and Code](https://www.wearedevelopers.com/videos/440-back-end-to-the-future-embracing-the-continuous-evolution-of-infrastructure-and-code) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [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) - [Moving from Java to Kotlin](https://www.wearedevelopers.com/videos/384-moving-from-java-to-kotlin) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [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) - [Best Job Boards for Remote Work for Developers](https://www.wearedevelopers.com/magazine/290-best-job-boards-for-remote-work-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [The Best Job Search Websites of 2025](https://www.wearedevelopers.com/magazine/368-the-best-job-search-websites-of-2025)