puestos de Java en España

Location : Spain (99% Remote)

Contract : Freelance Long terms

Language : French or English mandatory

Key Skills

• Mandatory : JAVA 17+, ReactJS / HTML CSS, Object-oriented programming, SQL, Git
• Important : Functional programming, MongoDB, Hibernate, TypeScript

Context : Our client wishes to strengthen their teams with Java / ReactJS full-stack developer profiles. The project consists of 2 Scrum teams, with 3-week sprints. Each team is composed of full-stack developers, QA testers, and a Product Owner. The position is open to experienced profiles or talented juniors.

Description : Defines, designs, and writes, based on an analysis of the specifications, all or part of the programs necessary for the development of IT solutions, and ensures their maintenance.

• Analyze and estimate User Stories.
• Develop features based on specifications.
• Participate in code reviews.
• Perform unit tests.
• Write associated documentation.
• Ensure compatibility of application components or technical elements with existing ones.
• Implement the solution (programming, configuration...), respecting norms and standards.
• Participate in technical meetings.
• Share and circulate information within the team.

Skills :

• Back-end (Java)

Advanced Java : Mastery of the latest Java versions (Java 17 or higher).

• Java Frameworks : Expertise in a Java framework (for REST APIs, microservices, security, ORM, SpringBatch).
• API Design : Creation and management of RESTful APIs / Version management, pagination, and documentation with Swagger / OpenAPI.
• Databases : Relational DBMS : MariaDB, MySQL, or Oracle. NoSQL databases : MongoDB SQL query optimization and use of ORM (Hibernate).
• Testing : Unit tests (JUnit, Mockito). Integration tests with tools like Test containers or Postman.
• CI / CD : Knowledge of continuous integration and continuous deployment pipelines (Jenkins, GitLab CI / CD).
• Front-end (ReactJS)

ReactJS Mastery : In-depth knowledge of React and its concepts : hooks, functional components, global state, context management.

• API Consumption : Communication with backends via Axios or Fetch API (error handling and loading states).
• Style management with CSS-in-JS.
• Object-oriented TypeScript programming.
• Other Technical Skills

DevOps tools : Use of Docker for development environments.

• Versioning : Mastery of Git (GitHub, GitLab).
• Performance and optimization : Profiling and optimization of front-end and back-end performance.
• Security : Knowledge of OWASP standards (XSS, CSRF) and securing sensitive data.

Bonus added value :

• Knowledge of BPMN (Business Process Model and Notation is a flowchart method that models the steps of a planned business process from A to Z).
• Know how to use web application profiling tools.