Network Specialist (CyberSecurity)

Title: Network Specialist (CyberSecurity) (961-02)
Location: Information Technology Unit, Finance & Operations Division, OPSEU/SEFPO Head Office, 100 Lesmill Rd, Toronto, ON, M3B 3P8
Reporting to: Supervisor, Information Technology Unit
Search Type: Open to all OPSEU/SEFPO members and the community (First consideration to be given to OPSEU/SEFPO members)
Salary: $2,116.00 to $2,349.00 per week (Range 4 – Pro-Tech, subject to evaluation by the JJEC)
Working Conditions: As provided in the OPSSU/OPSEU/SEFPO Collective Agreement

Principal Duties
Deploys, secures, maintains, and optimizes enterprise network infrastructure components including firewalls, switches, VPNs, wireless systems, and IDS/IPS to ensure resilient, compliant, and threat-aware connectivity across all platforms. This position requires a strong understanding of network protocols, cybersecurity tools, and best practices to uphold the confidentiality, integrity, and availability of networked systems.

• Manage and maintain organization’s network and cybersecurity infrastructure, ensuring the confidentiality, integrity, and availability of systems and data across cloud and on-prem environments.
• Maintain and support servers, FortiGate firewalls, switches, routers, wireless infrastructure, and endpoint protection tools.
• Manage SSL/TLS certificate lifecycles and maintain secure DNS and domain controller configurations.
• Design and implement threat detection, hunting, and incident response strategies using SentinelOne, Microsoft Defender, ESET, and FortiGate.
• Monitor and analyze logs from firewalls, VPNs, IDS/IPS, content filters, Windows/Linux systems, and SIEM platforms to identify and mitigate internal and external threats.
• Lead remediation efforts from audits, threat intelligence, incidents, and cybersecurity assessments.
• Enhance organizational readiness by participating in disaster recovery simulations, incident response drills, and tabletop exercises; contribute to the development and automation of security playbooks and risk assessment workflows.
• Maintain and improve security documentation, including guidelines, standards, and operational procedures, while actively monitoring emerging cyber threats to inform and update defensive strategies.
• Promote security awareness by helping lead employee training sessions focused on phishing prevention and other common cyber threats.
• Collaborate with other members of the cybersecurity team to develop new protocols, layers of protection, and other proactive and defensive systems for remaining ahead of cybercriminals.
• Support Microsoft 365 administration, including Security and compliance center monitoring, Managing data loss prevention (DLP) and retention policies.
• Reviewing conditional access and MFA configurations
• Administering Exchange Online Protection (EOP) and Defender for Office 365
• Integrate cybersecurity best practices into infrastructure and cloud modernization projects by collaborating with cross-functional teams to ensure secure design, deployment, and operations.
• Automate routine security operations, enforce secure configuration baselines, and support vulnerability management and patch deployment across platforms.
• Perform other duties as assigned.

Qualifications

• Undergraduate degree in Computer Science, Cybersecurity, or related field, and a minimum of three years of related work experience (or equivalent combination of education and experience).
• Proficient in enterprise security tools (e.g., SentinelOne, Microsoft Defender, ESET, FortiGate) with hands-on experience in threat detection, prevention, SIEM platforms, and incident response.
• Hands-on experience with SIEM tools, log analysis, incident detection, and response.
• Strong understanding of cybersecurity frameworks (NIST, CIS) and Ontario-specific compliance requirements, including PHIPA, PIPEDA, FIPPA, and the Ontario Cyber Security Framework (OCSF).
• Solid knowledge of network security, IAM, MFA, Microsoft 365 security and compliance features, and scripting (PowerShell, Bash) for automation and baseline enforcement.
• Strong analytical and problem-solving skills with the ability to investigate and resolve complex security incidents.
• Knowledge of OPSEU/SEFPO organization, structure and policies; knowledge of the IT Unit as well as familiarity with the operations of other Units.
• Understanding of and commitment to labour movement and social democratic philosophy.
• Understanding of and commitment to the principles of anti-racism, equity, diversity and inclusion.
• Tact and Diplomacy skills.

OPSEU/SEFPO supports employment equity. Racialized workers, women, Indigenous workers, LGBTQ2S+ workers and workers with disabilities are encouraged to apply. For the purpose of statistical data collection, applicants are strongly encouraged to voluntarily self-identify. OPSEU/SEFPO’s diverse workplace also supports Francophone workers and young workers.

A total of 60% or greater in the competition process must be achieved to obtain the position.

All applications must be sent in either as Word documents or as a PDF.

Please advise should you require any accommodation to participate in this competition.

Applications
Required: Applicants must complete the two-step submission process noted below. Failure to do so may result in disqualification from consideration.

1. Complete the OPSEU/SEFPO Job Applicant Survey;
2. Applications must be sent to competitions@opseu.org quoting “26.018 – Network Specialist (CyberSecurity) (961-02), Information Technology Unit” by 5:00 pm (Eastern Time) on May 15, 2026.