> Markdown version of [/jobs/ext/4595187-senior-backend-focused-full-stack-engineer-remote](https://www.wearedevelopers.com/jobs/ext/4595187-senior-backend-focused-full-stack-engineer-remote). 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-Focused Full-Stack Engineer (Remote) - **Company:** Zartis - **Location:** Spain (Remote available) - **Contract:** Permanent contract - **Skills:** MongoDB, NoSQL, Software Engineering, Spring-boot, Backend, Kotlin, Infrastructure Automation Frameworks, Api Management - **Published:** November 6, 2026 - **Apply:** https://www.jobleads.com/es/job/senior-backend-focused-full-stack-engineer-remote--spain--e0f9085b0ec45d57d9fb1fc8cef80f1d3 ## About the Role The role requires several years of professional software development experience with strong backend expertise in Kotlin and Spring Boot, and experience with MongoDB or other NoSQL databases. ## Description Zartis is seeking a Senior Full Stack Engineer (Backend focused) to work on a retail project. You will own, develop and maintain backend services, implement API integrations, and contribute to infrastructure automation in a fully remote setup. The role requires several years of professional software development experience with strong backend expertise in Kotlin and Spring Boot, and experience with MongoDB or other NoSQL databases.