Senior Cyber Security Specialist

Sobeys is full of exciting opportunities, and we are always looking for bright new talent to join our team! We currently have a full-time opportunity for a Senior Cyber Security Specialist. This role can be based out of one of our main offices including: Stellarton, NS; Mississauga, ON; Calgary, AB; Burnaby, BC.

We’re seeking a Subject Matter Expert (SME) who will lead both detection engineering and proactive threat hunting to design, implement, and continuously improve our detection logic and hunt operations across retail and enterprise environments. The role blends advanced SIEM/EDR content engineering with hypothesis-driven hunts and actionable threat intelligence to build a threat-informed defense.

Key Responsibilities

• Detection Engineering
  • Design, author, and maintain high-fidelity detection rules and behavioral analytics across SIEM/EDR (e.g., Azure Sentinel or Elastic Stack or Splunk SPL for detections and dashboards).
  • Parse/normalize diverse log sources (POS systems, payment gateways, e-commerce platforms, cloud services, and network devices) to ensure consistent log data.
  • Perform detection gap analysis, recommend architecture improvements, and document use cases in a detection content catalog/knowledge base.
• Threat Hunting & Threat Intelligence
  • Lead hypothesis-driven hunts using MITRE ATT&CK and behavioral analytics to uncover ransomware, data exfiltration, POS malware, supply-chain compromises, card skimming, cloud misconfigurations, and insider fraud.
  • Integrate curated threat intelligence (including retail-focused actors such as FIN6 and current ransomware groups) into hunting and detection pipelines; produce actionable reports and executive briefings.
• Automation, SIEM/EDR Operations & Response
  • Build automation to streamline alert triage and response; optimize SIEM dashboards and data models for retail-specific visibility.
  • Partner with IR/SOC to operationalize detections and hunts; track efficacy and continuously tune for false-positive reduction.
• Collaboration & Leadership
  • Collaborate closely with SOC, IR, and engineering teams; mentor junior analysts and lead knowledge-sharing sessions.
  • Communicate status, risks, and outcomes to stakeholders; drive threat-informed risk assessments and posture improvements.
• Project & Program Management
  • Own end-to-end delivery of detection and hunting initiatives (scope, timelines, resources, deliverables) aligned to compliance and business objectives.

Qualifications & Requirements

• SIEM/EDR Expertise: Advanced Splunk SPL; hands-on with SIEM (Splunk, QRadar) and EDR tools.
• Log Engineering: Proven experience normalizing/ingesting logs from POS, payment systems, e-commerce, cloud, and network devices.
• Threat-Informed Defense: Ability to operationalize threat intelligence and conduct ATT&CK-aligned hunts.
• Cloud Security: Working knowledge of AWS, Azure, GCP in retail environments.
• Compliance & Privacy: Strong understanding of PCI DSS for payment security monitoring and familiarity with GDPR/CCPA.
• Scripting & Automation: Proficiency in Python and PowerShell for data parsing, enrichment, and workflow automation.
• Retail Threats & Fraud: Experience with ransomware, card-skimming, insider fraud, loyalty-program and e-commerce fraud patterns.

Preferred Certifications

• GIAC GCDA, GCIA, GCFA, GCTI; OSCP; PMP (or equivalent).

What Success Looks Like (KPIs)

• Increased ATT&CK coverage and validated detections for priority TTPs.
• Reduced mean-time-to-detect (MTTD) and false-positive rates through tuning and automation.
• Regular delivery of high-quality hunt reports, executive briefings, and detection content with measurable impact.