Job Title: Secure Data and Document Exchange Expert (hybrid mode , location: Brussels)

About the Role

As a Secure Data and Document Exchange Expert, you will play a key role in designing and implementing secure messaging systems and data exchange protocols between backend systems and public-sector platforms. Your expertise will directly support secure digital communications within and across EU institutions.

Key Responsibilities

• Design and implement secure integration layers between backend systems and messaging tools
• Provide expert guidance on key security principles:
• Confidentiality
• Integrity
• Authentication
• Authorization
• Availability
• Non-repudiation
• Conduct risk and vulnerability assessments for messaging/data transfer systems
• Maintain and evolve technical specifications for messaging and transport protocols
• Optimize the performance and robustness of secure data exchange workflows

Profile — What You Bring

Education & Experience

• Master’s degree with 5+ years OR Bachelor’s with 9+ years of relevant experience
• Proven background in: Digital signatures X.509 PKI ASiC eIDAS standards

Technical Expertise

• Strong Java development skills with knowledge of object-oriented programming
• Proficient with transactional databases: SQL, LDAP, ACID/XA
• In-depth knowledge of secure messaging standards:
• ebMS3
• AS4
• XML, JSON
• BDXL
• Strong grasp of web security protocols:
• TLS
• OAuth2
• OpenID
• WS-Security
• OWASP
• Mobile app security experience (Android in Java/Kotlin and iOS in Swift), including Key Attestation
• Infrastructure and security tools experience:
• Docker
• Kubernetes
• Linux
• TPM
• HSM

Working Style & Collaboration

• Familiarity with Agile methodologies: SCRUM, OpenPM2
• Proficient with collaboration tools: Jira, Confluence
• Excellent communication, documentation, and teamwork skills
• Fluent in English and French (C1 level)

Nice to Have

• SANS Web Application Tester certification
• Experience working with or for EU institutions
• Certifications in:
• Security
• Project management
• Software engineering
• Background in multicultural, large-scale international projects