Senior Full-stack Engineer International Projects

Altia; Brussel; Remote; EUR 90,000 - 120,000; Full time

Job summary

Altia is seeking a Senior Full-stack Software Engineer (Java) to join our international team. You will work on full-stack development, API integration, and secure data exchange including AS4/eDelivery messaging.

The role covers plugin development, conformance testing, technical documentation and CI/CD automation, contributing to cutting-edge interoperability projects. The ideal candidate has extensive Java/J2EE experience, strong XML/Schematron validation skills, and expertise in enterprise

Qualifications

• University degree EQF6 and extensive IT experience.
• Proficient in English (B2+) and French (A2+).
• Extensive Java/J2EE stack experience with modern web tech.
• Strong XML validation, AS4 messaging and secure data exchange.

Responsibilities

• Lead full-stack development and API integration tasks.
• Develop and validate AS4/eDelivery messaging integrations.
• Implement secure data exchange and interop solutions.
• Contribute to plugin creation, conformance testing and docs.

Skills

Java SE/EE

HTML

JavaScript

CSS

JUnit

MySQL

XML validation

Apache CXF

Tomcat

Node.js

Liquibase

HP Fortify

Schematron

OASIS ebMS3

ASiC Containers

eDelivery/Domibus

APIs design & development

interoperability architectures

Conformance testing tools

Plugin development

CI/CD automation

TOGAF 9 Foundation

Education

University degree (EQF Level 6)

17+ years IT experience

Tools

ActiveMQ

Oracle WebLogic

Docker

GitLab

SonarQube

Job description

Hello everyone!

We are currently looking for a Senior Full-stack Software Engineer (Java) to join our team.

About us

We are an IT Consulting Group providing innovative digital solutions across Europe.

Learn more: www.altiacompany.com/en

The project

Join an international project involved in full-stack development, API integration, secure data exchange and interoperability solutions, including AS4/eDelivery messaging, XML validation and ASiC containers. The role also includes plugin development, conformance testing, technical documentation and CI/CD automation.

Requirements

• University degree equivalent to EQF Level 6 and a minimum of 17 years of professional IT experience.
• English B2 or higher, both written and spoken.
• French A2 or higher.
• 20+ years of experience with Java SE/Java EE, HTML, JavaScript and CSS.
• 10+ years of experience with JUnit.
• 5+ years of experience with MySQL and XML validation technologies.
• 3+ years of experience with Apache CXF, Apache Tomcat, Node.js, Liquibase and HP Fortify.
• 3+ years of experience with Schematron, OASIS ebMS3, DSS, ASiC Containers, eDelivery/Domibus and four-corner architecture.
• Strong knowledge of XML/XSD/Schematron validation and secure electronic data exchange.
• Knowledge of AS4 messaging protocols, API development and interoperability architectures.
• Experience with plugin development, ASiC container creation, reading and validation, and conformance testing tools.
• TOGAF 9 Foundation certification or equivalent.
• API Design & Development certification/training or equivalent.

Nice to have

• Experience with ActiveMQ, Oracle WebLogic, Docker, GitLab, SonarQube and CI/CD pipelines.
• Additional expertise in AS4 and XSD/Schematron validation.
• Certifications in Ethical Hacking/Penetration Testing, Ethical Hacking/Offensive Security or TensorFlow (or equivalent).

What we offer

• International and multicultural environment.
• Opportunity to work on a major European Commission project.
• Primarily remote working model (far-site).
• Challenging projects involving secure interoperability and advanced Java technologies.
• Career growth opportunities.

This job offer has been drafted with impartiality and non-discrimination on the basis of gender, race, ideology or any other grounds in mind. In particular, it complies with current regulations on gender equality between women and men (Royal Decree-Law 6/2019).