JSOC - Senior Detection Engineer

Questrade Financial Group is seeking a Senior Detection Engineer to own the quality and effectiveness of the detection portfolio, creating, tuning, and validating alerts that drive organizational security outcomes. The ideal candidate will have 5+ years of relevant experience in detection engineering, security operations, or threat analysis in an enterprise environment.

Requirements

• 5+ years of relevant experience in detection engineering, security operations, or threat analysis in an enterprise environment
• Experience authoring and deploying detection rules using Elastic Detection Rules (KQL, EQL, ES|QL)
• Practical experience with MITRE ATT&CK framework for detection mapping and coverage analysis
• Experience tuning detection logic and reducing false positive rates in production environments
• Experience with SIGMA rule authoring and cross-platform detection development
• Experience conducting purple team exercises and validating detection effectiveness
• Strong log analysis and data exploration skills for identifying detection gaps and anomalies
• Knowledge of threat modeling methodologies and detection requirement development
• Knowledge of alert fatigue reduction strategies and signal-to-noise optimization
• Knowledge of SIEM platform architecture, data pipelines, and detection rule deployment workflows
• Experience developing and maintaining large-scale detection portfolios
• Experience with threat intelligence integration into detection workflows

Benefits

• Health & wellbeing resources and programs
• Paid vacation, personal, and sick days for work-life balance
• Competitive compensation and benefits packages
• Career growth and development opportunities
• Opportunities to contribute to community causes
• Work with diverse team members in an inclusive and collaborative environment