We are looking for a Senior Cyber Security Specialist to strengthen and advance our security operations in North York, Ontario. In this role, you will help protect enterprise systems, cloud platforms, and end-user environments by identifying risks, responding to threats, and driving practical security improvements. You will work across infrastructure, identity, endpoint, and network security while supporting compliance efforts and promoting a strong security culture throughout the organization.

This role is hybrid 2 days onsite in North York! 

Responsibilities:
� Monitor, investigate, and respond to security events across cloud, network, endpoint, and identity environments using SIEM and threat detection tools.
� Conduct vulnerability assessments, interpret findings, and partner with technical teams to prioritize and track remediation activities.
� Administer and enhance security controls within Microsoft technologies, including Defender, Sentinel, Intune, Entra, Microsoft 365, and Azure.
� Strengthen firewall and perimeter protections by configuring, reviewing, and troubleshooting platforms such as Check Point and Cisco security technologies.
� Support incident response efforts by analyzing suspicious activity, containing threats, documenting outcomes, and recommending preventive measures.
� Contribute to governance, risk, and compliance initiatives by helping align security practices with recognized frameworks and internal requirements.
� Promote security awareness by assisting with education programs, guidance materials, and practical recommendations for reducing user-related risk.
� Assess and improve security architecture with a focus on Zero Trust principles, network segmentation, identity protection, and endpoint resilience.

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more.

This job posting is for a current vacancy with our client.

Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.

Questions? Call your local office at 1.888.490.4429. All applicants applying for Canadian job openings must be authorized to work in Canada.

Only job postings for jobs located in Quebec appear in French.

© 2026 Robert Half. By clicking “Apply,” you’re agreeing to Robert Half’s Terms of Use and Privacy Notice.