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indeed

Senior Security Operations Specialist

CDW
Mississauga, CAN
Full-time
Onsite
Discovered 1 months ago
Managed Security ServicesSecurity operations centerNetwork securityInformation securityEndpoint securitySIEM

Full Job Posting

Role Overview

Provide second-level technical client support within Managed Security Services and specialize in network, information, or endpoint security.

Provide technical and process mentorship to Analysts and Senior Analysts.

Service Delivery

  • Resolve second-level support requests and escalate unresolved issues.
  • Develop and optimize security use cases, SIEM rules, and detection mechanisms.
  • Lead Tier-3 incident investigations, containment strategies, and remediation guidance.
  • Perform security analytics and provide findings and recommendations to clients.
  • Conduct vulnerability assessments, analyze threat intelligence, and prioritize risk mitigation.
  • Lead hypothesis-based threat hunts across client environments.
  • Build AI agents within SIEM and EDR for incident investigation and response.
  • Configure and administer SIEM and EDR platforms and perform platform integrations.
  • Perform root-cause analysis for recurring system performance or configuration issues.
  • Deliver client reports, briefings, and monthly or quarterly account meetings.

Service Improvement

  • Recommend solutions for technical deficiencies, service issues, product utilization, bugs, and enhancements.
  • Mentor analysts and act as an escalation point for technical issues.
  • Improve workflows, reduce false positives, and automate repetitive work.
  • Test new system releases, upgrades, and patches.
  • Develop SOPs, knowledge-base articles, and actionable threat advisory documentation.
  • Conduct technical and incident-handling knowledge transfer sessions.

Qualifications

  • Bachelor's degree or 3-year technology-related diploma plus 3 to 5 years of relevant security experience, or 8 years of IT experience including 3 to 5 years of relevant security experience.
  • At least two administrator- or expert-level certifications in managed security services disciplines are required.
  • Relevant certifications may include Cortex, QRadar, SANS, Splunk, CrowdStrike Falcon, Exabeam, Tenable, Microsoft SC-200 or SC-100, C|EH, or C|CIH.
  • Enterprise IT infrastructure and information systems support or implementation experience is required.
  • Strong analysis, independent work, collaboration, communication, customer satisfaction, and Microsoft Office proficiency are required.

Schedule

  • The managed services operation runs 24 hours a day, 7 days a week.
  • Availability for weekends, holidays, and overtime is required.

Professional Development

  • Attend training or shadowing activities and obtain industry certifications as determined by the manager.
  • Participate in assigned self-paced training.

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