Role: Cross Domain Solutions (CDS) Specialist Intermediate & Senior Job Summary We are seeking Intermediate (5 9 years) and Senior (10+ years) Cross Domain Solutions (CDS) Specialists to design, deploy, and support secure cross-domain environments for Government of Canada projects.

The ideal candidate will have strong expertise in CDS technologies, secure networking, Linux administration, system accreditation, and secure data transfer solutions.

Key Responsibilities Design, deploy, and maintain Cross Domain Solutions across networks with varying security classifications.

Support accreditation activities, documentation, testing, and compliance with ITSG-33 .

Configure and manage CDS Guards, Data Diodes, and Content Disarm & Reconstruction (CDR) solutions.

Develop and maintain SIEM dashboards, alerts, and security monitoring.

Design secure data flows using Apache NiFi .

Perform Linux server administration, security hardening, and troubleshooting.





Support TCP/IP networking, routing, firewalls, and develop automation scripts using Python, Bash, or Java

Script .

Required Skills & Experience Intermediate: 5 9 years | Senior: 10+ years of relevant experience.

University degree, diploma, or equivalent IT experience.

Robust hands-on experience with: Cross Domain Solutions (CDS) TCP/IP, routing, and firewalls CDR tools (Glasswall, Purifile) CDS Guards (Everfox HSG/TGS) Data Diodes (Blackline, Sphyrna, OWL, BAE) Linux administration and security hardening Apache NiFi SIEM monitoring and reporting Python, Bash, or Java

Script scripting Experience supporting secure Government or highly regulated environments is highly preferred.

Mandatory: Active Secret or Top Secret Security Clearance .

📌 Cross Domain Solutions (CDS) Specialist (Ottawa)
🏢 Querentia
📍 Ottawa