Design advanced KQL detections for Microsoft Sentinel and Defender XDR within PSP Investments’ hybrid mode, supporting global cyber defense operations. Work from Montreal four days weekly, collaborating with hunters, responders, platform teams, and a managed security provider.
As Senior Developer, Threat Defense and Detection Engineering, you will turn intelligence and testing recommendations into production use cases. You will engineer detections, preventive controls, telemetry coverage, and automations across Microsoft Sentinel, Defender XDR, CrowdStrike Falcon, and Azure DevOps. The position requires strong cybersecurity engineering and operational judgment.
Key Responsibilities: Write scalable KQL detections for Sentinel and Defender XDR
Implement controls, rules, and signatures in security tools
Test, document,



and release detection code through Azure DevOps
Support production detections, connectors, playbooks, and incident response
Measure ATT&CK; coverage, false positives, and catalogue performance
Requirements: Five years of hands-on cybersecurity experience
Advanced KQL and Microsoft Sentinel enterprise experience
Python, PowerShell, Git, code review, and CI/CD practice
Experience with SIEM, EDR/XDR, IDS, and CrowdStrike Falcon
Bachelor’s degree or equivalent experience; English and French bilingualism
Apply detection engineering, KQL, and security automation expertise to strengthen PSP Investments’ global threat defense capabilities.

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📌 Senior Detection Engineer Microsoft Sentinel (Quebec City)
🏢 PSP’s Private Debt & Credit Investment (PDCI) group
📍 Quebec City