Senior Network Support Specialist Level 3 to support secure mission-critical communications and network infrastructure operating within complex defence and security environments
Our public sector client is seeking a Senior Network Support Specialist Level 3 to support secure mission-critical communications and network infrastructure operating within complex defence and security environments .

This role supports the maintenance, configuration, accreditation, and operational sustainment of classified and protected network environments. The workplace includes enterprise and tactical communications systems, wireless networks, SATCOM, VPN technologies, cross-domain solutions, and multi-site infrastructure operating across geographically dispersed locations.

Responsibilities

Analyze, evaluate, test, and recommend data communication hardware and software solutions

Coordinate installation, maintenance, troubleshooting, and resolution of hardware and software issues across secure network environments

Support accreditation activities for classified and protected IT systems and prepare associated accreditation documentation

Prepare technical reports, network architecture documentation, configuration guides, standard operating procedures, and technical presentations

Monitor network performance and traffic, maintain service records, update network diagrams, and document issues, resolutions,



and lessons learned

Develop and maintain security and accreditation documentation, including operational concepts, risk assessments, and authorization packages

Support the development, testing, and maintenance of network continuity and disaster recovery plans

Collaborate with technical teams, stakeholders, and operational users to ensure network availability and performance

Participate in system integration, testing, and sustainment activities within secure environments

Must Haves

Network Support Specialist - 10+ years

Ultra-High Frequency (UHF) , Very-High Frequency (VHF) , or Beyond Line of Sight (BLOS) - 3+ years

Nice to Have

5+ years evaluating, testing, and recommending data communication hardware and software

5+ years preparing technical documentation, procedure manuals, and operating guides

5+ years monitoring network traffic, supporting capacity planning activities, and testing disaster recovery procedures

5+ years delivering user training, familiarization sessions, or technical knowledge transfer

5+ years maintaining technical records, asset inventories, network diagrams, wiring documentation, and issue logs

Disclaimer:
AI may be used in evaluating candidates.
This posting is for an existing vacancy.

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📌 Senior Network Support Specialist Level 3 to support secure mission-critical communications and netw (Ontario)
🏢 S.i. Systems
📍 Ontario