> Markdown version of [/jobs/ext/4678138-mid-level-full-stack-engineer-saas-java-react-remote](https://www.wearedevelopers.com/jobs/ext/4678138-mid-level-full-stack-engineer-saas-java-react-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).

---

# Mid-Level Full Stack Engineer - SaaS, Java/React, Remote

- **Company:** Agileengine, Llc.
- **Location:** Barcelona, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Software as a Service, Continuous Integration, Standard Sql, ReactJS, Microservices
- **Published:** November 12, 2026
- **Apply:** https://www.jobleads.com/es/job/mid-level-full-stack-engineer-saas-java-react-remote--barcelona--ec5d3b640df8b705625450e05956c4fdd

## About the Role

The role requires 3+ years SaaS experience and strong Java, React, and SQL skills, plus microservices, CI/CD and observability practices. You will collaborate with design and product teams, estimate work, plan sprints, and contribute to docs and deployment processes.

## Description

AgileEngine, LLC. in Spain is seeking a Mid-level Full Stack Developer to build secure, scalable software for public safety clients, including a client integration system built from scratch.

The role requires 3+ years SaaS experience and strong Java, React, and SQL skills, plus microservices, CI/CD and observability practices. You will collaborate with design and product teams, estimate work, plan sprints, and contribute to docs and deployment processes.