Castor Network

2 Jobs

8 Employees

About the Company

An ALTEN company, Leader européen de l’ingénierie et du conseil en technologies, le Groupe ALTEN est présent sur l’ensemble des secteurs d’activité et intervient pour ses clients sur plus de 35 000 projets dans plus de 25 pays. Fort de ces nombreuses opportunités, le Groupe se dote d’une plateforme dédiée afin d’ouvrir aux Freelances ses nombreux projets dans l’ensemble de ses filiales en France et à l’international. C’est ainsi que Castor Network est né, tout d’abord pour faciliter la mise en relation entre les Freelances et les opérationnels, et aussi pour fédérer une communauté de Freelances.

Listed Jobs

Company Name: Castor Network
Job Title: Freelance : Développeur Java (H/F)
Job Description: Job Title: Freelance Java Developer Role Summary: Deliver backend development for client applications using Java and Spring, with occasional contributions to Vue.js front‑end interfaces. Expectations: Produce clean, maintainable, and tested code; collaborate with product, QA, and front‑end teams; meet development milestones and deliverables. Key Responsibilities: - Design, develop, and maintain Java applications. - Participate in technical design and architecture decisions. - Write unit, integration, and automated tests. - Use Git for version control and code reviews. - Document REST APIs and application behavior. - Collaborate with product, QA, and front‑end teams. - Optionally contribute Vue.js UI components. Required Skills: - ≥4 years Java development experience. - Strong proficiency in Java 8+ and Spring/Spring Boot. - Experience with RESTful APIs, Git, SQL and NoSQL databases. - Familiarity with Vue.js (preferred). - Commitment to clean coding practices and thorough testing. Required Education & Certifications: - Bachelor’s degree in Computer Science, Software Engineering, or related field (or equivalent experience). - Java certifications (e.g., Oracle Certified Professional) optional.

Company Name: Castor Network
Job Title: Ingénieur logiciel Java Senior
Job Description: **Job Title:** Senior Java Software Engineer (Freelance) **Role Summary:** Deliver backend Java solutions for a global energy client. Lead design, development, and maintenance of scalable, high‑performance applications, while driving architectural decisions, API integration, and deployment automation. **Expectations:** - Operate as an independent freelancer with own legal entity. - Bring proven experience with Java 8/11+ in complex environments. - Demonstrate strong collaboration across international teams. **Key Responsibilities:** - Design, code, and maintain robust Java backend services. - Contribute to software architecture and enforce best practices. - Build, integrate, and optimize REST APIs and web services for system interoperability. - Work with DevOps to automate build, test, and deployment pipelines. - Author unit and integration tests (JUnit, Mockito) to ensure code quality. - Participate in Agile ceremonies (daily stand‑ups, sprint planning, reviews, retrospectives). - Produce technical documentation and support user acceptance testing. **Required Skills:** - Java 8/11 or higher, Spring / Spring Boot, Hibernate. - SQL database proficiency (PostgreSQL, Oracle). - CI/CD tools: Jenkins, GitLab CI. - Cloud platforms: AWS (preferred), Azure. - Unit testing: JUnit, Mockito. - Agile methodology experience. - Excellent written and verbal communication in English. **Required Education & Certifications:** - Bachelor’s or Master’s degree in Computer Science, Software Engineering, or related field. - Optional: Java technology certification, AWS certification, or equivalent cloud credentials.

Île-de-france, France

On site

Senior

05-12-2025