Full Stack Developer

Our client is looking for a Full Stack Developer to work on a long term freelance/contract. This would be based 2 days per week in Luxembourg with 3 days working from home.

Nature of the tasks:

Java Development:

• Upgrading from Java 8 to Java 17 or a higher version
• Developing vendor-agnostic portable applications

Spring Boot:

• Developing back-end applications.
• Integrating Spring Boot applications with external services
• Deploying Spring Boot applications on Apache Tomcat

API Development:

• Developing OPENAPI-compliant Java-based REST APIs, and integrating with existing RESTful services.
• Designing and implementing APIs beyond traditional REST, including query-based (e.g. GraphQL, SPARQL) and asynchronous interaction patterns.

Credential Management:

• Securing applications and using secrets management tools like Hashicorp Vault.
• Refactoring code to retrieve secrets securely from an external tool.

Dependency Management:

• Using Maven to manage Java project dependencies.

Database Integration:

• Working with Oracle databases and PostgreSQL, including data migration strategies.
• Querying and updating relational databases (Oracle, PostgreSQL)

Containerization:

• Containerizing applications with Docker, ideally with solutions compatible with cloud-agnostic environments.

Messaging Platforms:

• Integrating with Message Broker message streams (e.g. Kafka) used in distributed event systems and asynchronous architectures.
• Manage and define versioned data schemas in distributed events context.