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Harris Computer

Acquires and grows mission-critical vertical software

Senior IT Cyber Defense Analyst - Shift Lead

Security Operations & Incident ResponseUpdated on Nov 13
Full-timeNo salary listed

About the Job

Requirements

  • A bachelor's degree in Cybersecurity, Information Technology, or Computer Science, or equivalent practical experience.
  • At least 5 years of experience in SOC, cyber defense, or incident response, including shift leadership, incident coordination, or analyst mentoring.
  • Strong hands-on experience with SIEM, EDR/XDR, incident investigation, and threat detection.
  • Proficiency in Microsoft Sentinel and KQL, and experience with Microsoft Defender, CrowdStrike, or similar security platforms.
  • Strong understanding of networking, Windows/Linux, identity security, email threats, and MITRE ATT&CK.
  • Practical AI/LLM proficiency, including prompt engineering, AI-assisted investigations, validation of AI-generated queries/scripts, and awareness of hallucinations, prompt injection, and data privacy risks.
  • Scripting or automation experience using Python, PowerShell, APIs, or SOAR tools.
  • Strong analytical, communication, decision-making, and team leadership skills, and willingness to work in a 24/7 rotational shift environment.

Responsibilities

  • Lead SOC shift operations, prioritize alerts, manage escalations, and ensure timely handovers and SLA adherence.
  • Investigate complex incidents involving phishing, malware, ransomware, compromised accounts, endpoint threats, and suspicious network activity.
  • Conduct threat hunting, correlate security telemetry, and map attacker behavior to the MITRE ATT&CK framework.
  • Develop, optimize, and troubleshoot SIEM queries, analytics rules, and detection use cases using Microsoft Sentinel and KQL.
  • Use approved AI/LLM tools for alert triage, investigation assistance, threat intelligence enrichment, KQL development, incident reporting, and workflow automation, and independently validate AI-generated outputs.
  • Automate repetitive SOC tasks using Python, PowerShell, APIs, or SOAR capabilities.
  • Mentor analysts, improve investigation quality, reduce false positives, and maintain accurate incident documentation and audit-ready evidence.
  • Coordinate with Incident Response, IT, Endpoint, Network, and Cloud teams to support containment, remediation, and recovery.
  • Participate in AI learning opportunities and experiment with practical applications of AI in day-to-day work.
  • Apply AI tools in practical work-relevant ways, use sound judgment when relying on AI outputs, and share learnings with others.

Desired Qualifications

  • Certifications such as Microsoft SC-200, CompTIA CySA+, GCIH, or relevant SIEM/EDR vendor certifications.
  • Experience in proactive threat hunting, detection engineering, cloud security, and SOC process improvement.

About the Company

Harris Computer

Acquires and grows mission-critical vertical software

Harris Computer builds and grows a portfolio of mission-critical software for vertical markets such as Public Sector, Healthcare, Utilities, and Insurance across North America, Europe, Asia, and Australia. It operates on a buy-and-hold model, acquiring established vertical-market software companies and providing operational support, capital, and shared best practices while each business continues serving its niche. Its approach differs by combining many niche software companies under one umbrella, backed by Constellation Software, with a focus on long-term ownership and stability for mission-critical customers. Its goal is to grow and manage a broad portfolio of specialized software businesses, creating value through enduring ownership and shared expertise so each company reliably serves its vertical markets.

Company size
1,001-5,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Ottawa, Canada
Founded
1976

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