Full Stack Developer

We’re looking for a highly experienced Java engineer to build vendor-agnostic, cloud-portable applications and integrate complex backend and frontend components. You will develop secure Spring Boot services, design REST APIs, work with RDF knowledge graphs, containerize applications for multi-cloud environments, and ensure full compliance, documentation, and reliability across the stack.

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Key Responsibilities

• Develop portable, vendor-agnostic Java applications and microservices
• Build and integrate Spring Boot, REST APIs, external services, and GraphQL endpoints
• Secure applications using HashiCorp Vault and industry standards (SSDF, NIST 800-53)
• Integrate and configure databases (Oracle, PostgreSQL, Liquibase)
• Work with RDF knowledge graphs and triple stores
• Containerize and deploy applications using Docker, Kubernetes, and cloud-agnostic tools
• Develop responsive UIs using Angular, HTML/CSS3, and modern frontend build tools
• Build test suites (JUnit, Mockito, Postman, Cypress, Jest, Testcontainers)
• Implement SaaS/CaaS services, CI/CD automation, monitoring/logging (ELK)
• Migrate systems (WebLogic → Tomcat, Oracle → PostgreSQL, Java 8 → 17+)
• Ensure documentation, licensing compliance, and maintain clean technical records

Required Experience & Skills

• 10+ years in IT; 8+ years with Java 8–21
• Extensive backend experience: Spring Boot, REST APIs, PL/SQL, Liquibase, Kafka, schema registry, event-driven systems
• Strong frontend expertise: Angular, HTML/CSS3, responsive UI, Webpack/Vite
• Solid multi-cloud experience (AWS/Azure/GCP) + cloud-agnostic architectures
• Hands-on with Kubernetes, Docker, CI/CD pipelines, Git, SaaS/CaaS hosting
• Skilled in XML, JSON, HTML, RDF, knowledge graphs, GraphQL
• Strong documentation abilities and experience with Atlassian tools and Agile/Scrum
• Fluent English; good command of French

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