Java Fullstack Developer

Location : Spain (99% Remote)

Contract : Freelance Long term

Language : French or English mandatory

Key Skills Mandatory :

• JAVA 17+
• ReactJS / HTML CSS
• Object-oriented programming
• Functional programming
• MongoDB
• Hibernate
• TypeScript

Positions : x3 Développeurs fullstack Java / ReactJS (Medior - Senior)

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.

Deliverables :

• 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). Advanced HTML, CSS, and JavaScript. In-depth understanding of ES6+ (async / await, destructuring, etc.). 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.

Apply here or via email at :

J-18808-Ljbffr