> Markdown version of [/jobs/ext/3105388-senior-java-kotlin-backend-engineer-banking-apis-hybrid](https://www.wearedevelopers.com/jobs/ext/3105388-senior-java-kotlin-backend-engineer-banking-apis-hybrid). 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 - Banking Apis, Hybrid - **Company:** Salmon Group Ltd - **Location:** Santiago de Compostela, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Java Virtual Machine (JVM), Backend, Kotlin, Restful APIs, Docker - **Published:** September 27, 2026 - **Apply:** https://www.buscojobs.com.es/senior-java-kotlin-backend-engineer-banking-apis-hybrid-en-santiago-de-compostela-ID-372668240 ## About the Role A fast-growing fintech company is seeking an experienced Java Engineer ready to switch to Kotlin. You will design, build, and scale core banking platforms, working on high-load systems and developing robust APIs. The ideal candidate has 5+ years in the JVM ecosystem, expertise in Kotlin or Java, and knowledge of Docker and Kubernetes. Join us to influence architecture and work on systems used by millions. Remote and hybrid options available. ## Description A fast-growing fintech company is seeking an experienced Java Engineer ready to switch to Kotlin. You will design, build, and scale core banking platforms, working on high-load systems and developing robust APIs. The ideal candidate has 5+ years in the JVM ecosystem, expertise in Kotlin or Java, and knowledge of Docker and Kubernetes. Join us to influence architecture and work on systems used by millions. Remote and hybrid options available.#J-*****-Ljbffr