Full-stack developer - Luxembourg - Near site

We are on the lookout for a/an Full-stack developer to join our team for working with European Institutions based in Luxembourg in an near site position.

Get to know us - SEIDOR

At SEIDOR, we drive client transformation and competitiveness with cutting-edge technology and innovation , with a relentless focus on the human element and a commitment to nurturing talent and sustainable growth.

As a diverse and inclusive company that champions equal opportunity, we boast a team of over 8,000 professionals in our global presence across 45 countries in Europe, Latin America, the USA, the Middle East, Africa, and Asia.

We believe the digital world's challenges require not only the best technologies and partnerships but most importantly, the best people. That's where you come in – we need you to help us scale new heights.

For this position you would be working with our client from the European institutions.

Below are the details of your role and requirements.

Your role

Java Development:
• Upgrading from Java 8 to Java 17+ (preferably 21)
• Developing vendor-agnostic portable applications

Spring Boot :
• Developing back-end applications.
• Integrating Spring Boot applications with external services

API Development :
• Developing and integrating Java APIs, especially with RESTful services.

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 migration strategies.
• Integrating and configuring databases, e.g. Liquibase or similar
• Working with RDF knowledge graphs and triple stores.

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

Messaging Platforms :
• Integrating Kafka distributed event systems for asynchronous contexts.
• Centralized management of data schemas in distributed events context.

Continuous Integration/Continuous Deployment (CI/CD) :
• Following CI/CD practices for automated testing, integration, and deployment.
OPOCE_ Full-Stack Developer
• Using GIT code repositories and delivery processes

Licensing and Compliance :
• Working with licensing and compliance aspects and constraints of integrated
components and dependencies.

Framework Refactoring:
• Refactoring applications from WebLogic to Tomcat.

Testing and Validation :
• Testing and validation of application changes
• Front-end testing with tools such as Mocha, Jest, Jmeter,or Cypress.
• Back-end testing with tools such as JUnit, Mockito, Postman, and Testcontainers

Documenting and Communication :
• Documenting code and system configurations.
• Communication and collaboration with other teams and stakeholders.

Frontend Development:
• Using modern JavaScript frameworks, specifically Angular and potentially eUI
• Proficient use of HTML, CSS3, responsive and accessible design principles.
• Working with frontend build tools like Webpack or Vite.

Cloud Platforms & Monitoring:
• Development and integration of AWS, Azure, or GCP.
• Implementing services using SaaS and CaaS hosting.
• Integrating monitoring and logging tools such as the ELK stack.
• Monitoring Kafka-based data flows

Agile & Collaboration:
• Working in Agile/Scrum environments.
• Using tools like Jira

What’s in it for you?

From day one, you’ll find opportunities for personal and professional development within a supportive team environment. We offer:

• A permanent role at a leading tech project firm (subcontractor also possible).
• A hybrid work schedule, blending in-office collaboration with the convenience of working from home.
• Continuous learning and development through SEIDOR Academy.
• A package including salary and additional annual bonus, working equipment, phone and other benefits.
• A dynamic international workplace with diverse teams.
• A commitment to your well-being, work-life balance, and career growth.
• Rapid advancement opportunities in a short period of time.
• Engaging events and a comprehensive onboarding program.

At SEIDOR, your growth is our success, and we strive to make our workplace feel like home. Discover the nine core aspects of our culture that define us at SEIDOR:

https://www.seidor.com/en-es/talent

If this resonates with you, we'd love for you to apply to our opening, and we'll be in touch soon!

Who we think you are:

1. Java Development
• Strong experience with Java versions 8 to 21 (96 months).
• Experience upgrading applications from Java 8 to versions 17+ (12 months).
OPOCE_ Full-Stack Developer
• Design and development of cloud-portable, vendor-neutral applications using open
standards (36 months).
• Development of back-end applications using Spring Boot (60 months).
• Dependency management with Maven (72 months).

2. API Development
• Development and integration of RESTful APIs (60 months).
• GraphQL experience (12 months).
• Experience with WSO2 API Gateway or similar tools (12 months).

3. Security & Credential Management
• Securing applications following standards such as SSDF, NIST 800-53, etc. (48
months).
• Working with secrets management tools like Hashicorp Vault (24 months).

4. Databases & Data Formats
• Oracle RDBMS (72 months).
• PostgreSQL RDBMS (72 months).
• Oracle → PostgreSQL migration experience (12 months).
• Database integration/configuration with Liquibase or similar tools (36 months).
• RDF, knowledge graphs, and triple stores (24 months).
• Oracle PL/SQL (36 months).
• Working with XML, HTML data formats (80 months).
• Working with JSON (80 months).

5. Containerization
• Developing containerized applications using Docker (24 months).
• Experience in cloud-agnostic environments (12 months).
• Kubernetes (30 months).

6. Event-Driven Architecture
• Experience with Apache Kafka (36 months).
• Managing Kafka data schemas (e.g., Schema Registry) (36 months).
• Monitoring and troubleshooting Kafka-based data flows and consumer performance
(18 months).

7. CI/CD & Licensing
• CI/CD practices for automated testing, integration, and deployment (36 months).
• Experience with Git repositories and delivery processes (36 months).
• Managing licensing and compliance for integrated components/dependencies (12
months).

8. Framework Refactoring
• Migrating applications from WebLogic to Tomcat or Java EE → Spring Boot (12
months).

9. Frontend Development
• Angular (60 months).
• HTML, CSS3 (60 months).
• Responsive and accessible design (60 months).
• Frontend build tools such as Webpack, Vite, etc. (60 months).

10. Testing
• Backend testing tools (JUnit, Mockito, Postman, Testcontainers) or equivalent (60
months).
• Frontend testing tools (Mocha, Jest, JMeter, Cypress) or equivalent (60 months).

11. Cloud Platforms & Monitoring
• Cloud development on AWS, Azure, or GCP (60 months).
• SaaS and CaaS hosting services (60 months).
• Monitoring/logging tools such as the ELK stack (60 months).

12. Agile & Collaboration
• Working in Agile/Scrum environments (60 months).
• Atlassian tools (Jira, Confluence, etc.) (60 months).
• Microsoft SharePoint and Teams (12 months).

13. Documentation & Communication
• Documenting code and configurations (60 months).
• Writing analysis documents (36 months).
• Writing installation instructions and technical guides (36 months).