DNS Architect (OT/CNI Environment)

Job Description

Strong expertise in DNS architecture and protocols (BIND, Infoblox, Microsoft DNS, or similar)
Deep knowledge of Linux administration (RHEL, CentOS, Ubuntu, or equivalent)
Experience with on-premise infrastructure design and deployment

Strong understanding of:
o TCP/IP, routing, switching, and network diagnostics
o DNS security (DNSSEC, DDoS mitigation, split-horizon DNS)
Experience operating in high-security or regulated environments
OT/CNI Experience
Proven experience in Operational Technology (OT) or Critical National Infrastructure (CNI) environments
Knowledge of network segmentation, air-gapped systems, and industrial control environments
Familiarity with SCADA systems, ICS networks, or similar industrial systems (desirable)
Security & Compliance
Strong understanding of cybersecurity principles in OT environments

Experience aligning with frameworks such as:
o NCSC guidance
o IEC 62443
o ISO 27001

Security Clearance (SC):
o Active SC Clearance preferred
o Candidates must be eligible for SC clearance if not already cleared