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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Java/Angular - **Company:** Ioon - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), XML Schema, Multitier Architecture, Spring Security, Code Review, Continuous Integration, Serialization, Github, Hibernate (Java), Java Persistence API, Junit, PostgreSQL, Apache Maven, Metadata, MongoDB, Parsing, Query Optimization, Redis, SonarQube, Extensible Markup Language (XML), Extensible Stylesheet Language Transformations (XSLT), RxJS, Spring-boot, Caching, Git, Spring Data, AngularJS, Gherkin, Kubernetes, Playwright, Front End Software Development, Cucumber (Software), Domain Driven Design, Docker - **Published:** September 25, 2026 - **Apply:** https://www.buscojobs.com.es/full-stack-java-angular-en-barcelona-ID-373091276 ## About the Role 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 #J-*****-Ljbffr ## Description 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#J-*****-Ljbffr ## Related Videos - [Angular Unleashed: Mastering Modern Web Development with Angular](https://www.wearedevelopers.com/videos/685-angular-unleashed-mastering-modern-web-development-with-angular) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [How to Create New RxJS Operators](https://www.wearedevelopers.com/videos/683-how-to-create-new-rxjs-operators) - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Angular tips/tricks you can use from tomorrow on](https://www.wearedevelopers.com/videos/364-angular-tips-tricks-you-can-use-from-tomorrow-on) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [Dev Digest 138 - Are you secure about this?](https://www.wearedevelopers.com/magazine/486-dev-digest-138-are-you-secure-about-this) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss)