> Markdown version of [/jobs/ext/2174097-fullstack-developer](https://www.wearedevelopers.com/jobs/ext/2174097-fullstack-developer). 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).

---

# fullstack developer

- **Company:** Comunidad de Madrid
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Code Review, Databases, Relational Databases, DevOps, Document-Oriented Databases, Virtual Private Networks (VPN), PostgreSQL, Apache Maven, MongoDB, Networking Basics, OpenID, Scrum Methodology, Data Streaming, Okta, Apache Yarn, ReactJS, Backend, Front End Software Development
- **Published:** August 22, 2026
- **Apply:** https://www.jobleads.com/es/job/e1d0b0eeb7a6ac9a559407b13df843b9f

## About the Role

* 4-7 years of professional experience as a fullstack developer
 * Hands-on backend experience with Java 17 and Maven
 * Hands-on frontend experience with React and Yarn
 * Practical experience with both a relational database (PostgreSQL) and a document database (MongoDB)
 * Comfortable working across the stack and owning a feature from API to UI
 * Good communication skills and comfort working with distributed, cross-functional teams
 * A pragmatic, quality-conscious approach to code, testing, and documentation

Nice to Have

 * Experience with AWS (ECS, Secrets Manager, VPN/networking basics)
 * Familiarity with SSO/OIDC and Keycloak
 * Exposure to B2B SaaS platforms, client portals, or back-office integration domains

## Description

We're looking for a mid-to-senior fullstack developer to help build and evolve this platform end to end - from the Java/Spring backend services to the React-based frontend - while working closely with the teams responsible for third-party integrations, platform infrastructure, and the wider product.

What You'll Do

 * Design, build, and maintain features across the platform's stack, spanning multiple regional environments
 * Develop backend services in Java 17 with Maven, and frontend components in React with Yarn
 * Work with PostgreSQL and MongoDB (Atlas Database) to model, query, and optimise account and document data
 * Integrate with regional identity providers (Keycloak) for authentication, and with internal data and document-archive services for account and document data
 * Contribute to the work needed for integration with a third-party back-office platform, including required user-management functionality, and support both pull and push data flows
 * Write clean, tested, well-documented code, and take part actively in code reviews
 * Collaborate with Product, QA, and DevOps within an agile setup - sprint planning, refinement, and retros
 * Help troubleshoot issues across the stack, including occasional 2nd-line support and root-cause analysis
 * Contribute to CI/CD pipelines and deployments on AWS
 * Help keep the portal scalable, modular, and brandable as new clients and integrations come on board


## Related Videos

- [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform)
- [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect)
- [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling)
- [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment)
- [Coffee with Developers](https://www.wearedevelopers.com/videos/354-coffee-with-developers)
- [Delegating the chores of authenticating users to Keycloak](https://www.wearedevelopers.com/videos/1558-delegating-the-chores-of-authenticating-users-to-keycloak)

## Related Articles

- [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)
- [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development)
- [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe)
- [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk)