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This job expired on 09/08/2026. It no longer accepts applications.
Senior Security Analyst – Hybrid (GTA)
CoreFactor · Mississauga
Job description
About the role
The Senior Security Analyst will join the Cyber Security Operations team to strengthen and mature the organisation's security operations capabilities. Working in a hybrid model, the analyst will provide senior‑level expertise in monitoring, detection, investigation and incident response across endpoint, network, cloud, identity and enterprise platforms.
Key responsibilities
- Monitor, triage and investigate security alerts from SIEM, EDR, email, identity, cloud and network platforms.
- Lead complex incident investigations, including scoping, containment coordination, root‑cause analysis and post‑incident follow‑up.
- Perform advanced threat hunting and anomaly analysis to uncover malicious activity and emerging attack patterns.
- Develop, tune and optimise detection logic, SIEM use cases, correlation rules, playbooks and alerting processes.
- Partner with infrastructure, cloud, networking and application teams to support containment, eradication and recovery.
- Review endpoint, network, identity and cloud telemetry to assess impact and guide risk‑based response decisions.
- Maintain incident response procedures, playbooks, escalation paths and documentation.
- Translate threat intelligence into actionable detection and response improvements.
- Provide 24x7 incident response support and senior operational guidance during major security events.
- Identify opportunities to improve SOC processes, detection coverage, automation and analyst workflows.
Required profile
- Highly motivated security professional with strong analytical, technical and problem‑solving skills.
- Deep expertise in security monitoring, alert triage, incident investigation, threat detection and containment across multiple platforms.
- Experience acting as a senior liaison between technical teams and business stakeholders.
- Solid foundation in security frameworks, attack techniques and operational best practices.
Required skills
- SIEM
- EDR
- Threat Hunting
- Incident Response
- Cloud Security
- Network Security
- Identity Management
- Security Frameworks
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CoreFactor
Mississauga
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