> Markdown version of [/jobs/ext/3003196-senior-backend-engineer-build-scalable-apis-platforms](https://www.wearedevelopers.com/jobs/ext/3003196-senior-backend-engineer-build-scalable-apis-platforms). 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 Backend Engineer: Build Scalable Apis & Platforms - **Company:** Dowjones - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Amazon Web Services, Databases, Continuous Integration, Linux, Python (Programming Language), Redis, Spring-boot, Backend, Restful APIs, Microservices - **Published:** September 19, 2026 - **Apply:** https://www.buscojobs.com.es/senior-backend-engineer-build-scalable-apis-platforms-en-madrid-ID-370462980 ## About the Role You will lead complex features, improve performance and observability, and collaborate with cross?functional teams across engineering, data, and product. The role requires 4-6+ years of backend experience, strong Java/Spring Boot and Python skills, and deep familiarity with AWS, Linux, CI/CD, microservices, and databases including Redis and #J-*****-Ljbffr ## Description Dow Jones is seeking a Senior Software Engineer to design, build, and operate reliable backend services powering product experiences and internal tools.You will lead complex features, improve performance and observability, and collaborate with cross?functional teams across engineering, data, and product.The role requires 4-6+ years of backend experience, strong Java/Spring Boot and Python skills, and deep familiarity with AWS, Linux, CI/CD, microservices, and databases including Redis and#J-*****-Ljbffr