Halian | Managed Services, Recruitment Agency & Contract Staffing
Full‑Stack Engineer (Java Spring Boot & React)
Halian | Managed Services, Recruitment Agency & Contract StaffingLuxembourg23 hours ago
Full-timeInformation Technology, Consulting

Full‑Stack Engineer (Java Spring Boot & React)

Mission

Design, develop, test, and deploy modern web applications across backend and frontend stacks, within cloud‑ready and containerized environments. Work closely with tech leads, business analysts, developers, and QA teams to deliver high‑quality, scalable solutions.


Responsibilities


Backend (Java / Spring Boot)


  • Develop and maintain APIs, services, and Spring Boot applications.
  • Implement REST, SOAP, and event‑driven integrations (Kafka).
  • Manage data access using JPA/Hibernate.
  • Ensure code quality through unit and integration tests (JUnit, TestNG, Mockito).
  • Deploy and monitor applications on‑premise and in cloud/containerized environments (Docker, CI/CD).
  • Implement secure authentication/authorization (OIDC/OAuth2).


Frontend (React)


  • Develop responsive, modern web interfaces using React (hooks, context API).
  • Build reusable UI components and design‑system elements.
  • Integrate REST APIs (JSON).
  • Ensure quality through unit and component testing (Jest, React Testing Library).
  • Manage build and CI/CD pipelines (NPM, Babel, Vite, Azure DevOps).


Tech Stack


  • Backend: Java 17+ (ideally 21), Spring Framework 6+, Spring Boot 3+, Kafka, JPA/Hibernate, Maven, Git, Docker, Azure DevOps.
  • Frontend: React, JavaScript, HTML5/CSS3, Jest, RTL, NPM, Babel, Vite.
  • Security: OIDC / OAuth2.


Nice to Have


  • Micro‑services integration (Apache Camel or Spring Integration).
  • Workflow/process engines (Temporal).
  • Strong full‑stack experience with React + Java.

Key Skills

Ranked by relevance