Senior full stack developer. English fluent (B2+).

Strong production experience with Java 21 and Spring Boot 3.x (REST, JPA/Hibernate, Spring Security, transactions, async/virtual threads).

Solid Angular 21 experience, or demonstrated ability to adopt Angular's latest patterns: signals, new control flow, standalone-first architecture.

Hands-on experience with PostgreSQL (schema design, Flyway migrations, query optimization) and MongoDB (document modeling, aggregations, Spring Data).

Comfort working with XML-heavy systems: XSD schemas, XSLT, parsers, or metadata-driven logic; experience with custom DSLs or rule engines is a strong plus.

Familiarity with Redis for caching and session state.

Understanding of hexagonal / clean architecture and domain-driven design in multi-module Maven projects.

Experience with GitHub Actions or similar CI/CD, SonarQube quality gates,



and container-based workflows (Docker, Kubernetes/Helm).

Strong testing discipline: JUnit 5, Testcontainers, and ideally BDD (Cucumber/Gherkin, Playwright).

Fluent with Git, code review culture, and agile delivery.

Requested task to perform: Build and enhance frontend features in Angular 21 (signals, standalone components, new control flow syntax, RxJS, state management, ngx-ndbx/ng-aquila component libraris).

Work with and extend the proprietary PEL-PC XML DSL — including XSD schemas, ANTLR grammar logic, XSLT/Saxon transformations, and XStream serialization.

Develop new Spring Boot modules that replace DSL-driven logic with maintainable, testable standard code

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📌 Full stack Java/Angular (Madrid)
🏢 IOON
📍 Madrid