Senior Security Engineer

Responsibilities

• Lead triage, investigation, escalation, and response for complex security alerts and incidents in North American time zones.
• Participate in a 24x7x365 on-call rotation as a senior incident response escalation resource.
• Engineer and optimize detection logic, detection coverage mapping, threat models, and security telemetry analysis.
• Develop KPIs covering detection effectiveness, false positives, and mean time to detect, respond, and recover.
• Create and maintain incident response runbooks, standard operating procedures, and technical documentation.
• Mentor junior team members in security operations, detection engineering, and incident response.
• Build automation workflows, orchestration playbooks, and AI-driven tools for security operations and incident response.
• Conduct proactive threat hunts across corporate and production environments and support the logging and monitoring infrastructure.

Requirements

• At least 5 years of hands-on security operations experience emphasizing incident response and detection engineering.
• Experience with enterprise security tools including EDR, NDR, CSPM, EASM, SIEM, SOAR, and cloud security platforms such as GuardDuty.
• Proficiency applying MITRE ATT&CK to detection capability and coverage-gap assessments.
• Expertise developing threat detection use cases from telemetry analysis, environment baselining, threat intelligence, and incident response findings.
• Strong understanding of AWS cloud services and containerization technologies.
• Preferred experience in threat hunting, cyber threat intelligence, digital forensics, Python, JavaScript, Go, Terraform, forensic tools, Detections-as-Code, Purple Team exercises, vulnerability validation, and observability or SRE tools and processes.
• Industry certifications such as GCIH, GCFA, GIME, OSIR, or GEIR are strongly preferred.

Benefits

• Flexible First remote work arrangement within the province of residence in Ontario or British Columbia, Canada.
• CAD 136,800–171,000 base salary range for the full-time position, plus eligible annual bonuses.
• Multiple health insurance options and flexible vacation time with additional floating holidays.
• Retirement savings program with company contribution and equity in a publicly traded company.
• Monthly remote-work stipend and annual professional development stipend.
• Family-forming benefits and generous parental leave base salary top-up.