Full stack Java/Angular
IOON · Barcelona, Spain ·
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- Fullstack
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Senior full-stack developer in Barcelona (on-site) building backend services with Java 21/Spring Boot 3.x and frontend features in Angular 21 (signals, standalone components). Day-to-day spans PostgreSQL and MongoDB, XML/DSL work with ANTLR/XSLT, plus CI/CD, testing, and containerized delivery.
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