Senior Cyber Security Specialist

NDT Global Group•Quebec, QC

1d•Hybrid

About The Position

We are seeking a Senior Cybersecurity Specialist with deep expertise in network security and strong hands-on networking skills. This role is responsible for ensuring a security-by-design approach across the organization’s infrastructure, with a primary focus on network environments. The position emphasizes continuous security validation, configuration governance, and threat mitigation. While not a primary network architect role, the specialist contributes to architecture reviews and provides expert guidance to ensure secure design principles are consistently applied.

Requirements

7–10+ years in cybersecurity, with strong exposure to network environments
Deep understanding of network protocols and architecture (TCP/IP, routing, switching, DNS, VPNs)
Proven experience with network security technologies (firewalls, IDS/IPS, NAC, segmentation)
Familiar with modern detection & inline enforcement
Strong experience in configuration reviews and security validation practices
Hands-on troubleshooting skills in complex enterprise networks
Solid understanding of modern threats, attack vectors, and defensive strategies
Experience working with managed detection and response (MDR) services and collaborating with external SOC providers
Ability to influence technical decisions without direct ownership

Nice To Haves

Experience participating in or reviewing network architecture design
Certifications such as CISSP, CCNP Security, CCSP, or equivalent
Experience with cloud network security (AWS, Azure, GCP)
Familiarity with SIEM, EDR, and monitoring platforms
Scripting or automation experience (Python, PowerShell)

Responsibilities

Lead detection, analysis, and response to cybersecurity threats and incidents
Enforce and promote a security-by-design approach across all network and infrastructure initiatives (core responsibility)
Conduct ongoing reviews of network and system configurations to ensure alignment with security best practices
Define, implement, and validate network security controls (segmentation, firewalls, zero trust, etc.)
Identify vulnerabilities and drive remediation efforts across network environments
Act as a senior escalation point for complex network-related security issues
Troubleshoot advanced network and security problems (routing, switching, VPNs, firewall policies)
Review and challenge network architecture designs to ensure security requirements are embedded from the outset
Provide targeted advisory input into network architecture and infrastructure planning, as needed (non-primary responsibility)
Support audits, risk assessments, and compliance initiatives
Mentor team members and advocate for secure configuration standards