Senior Microsoft Sentinel & Defender MDR Engineer

EY; Southwestern Ontario; On-site; CAD 91,000 - 126,000; Full time

Benefits offered by this job

Medical coverage

Dental coverage

Pension plan

Generous vacation

Job summary

EY is seeking a senior, hands‑on Microsoft security engineer to support the design, implementation, and continuous improvement of our MDR services. You will architect and deploy Microsoft Sentinel, engineer detections, and build automation with Azure Logic Apps for multinational clients.

As a senior engineer, you will onboard customer environments through Azure Lighthouse and Entra B2B, collaborating with delivery teams and stakeholders to drive production-ready security outcomes.

Qualifications

• Bachelor’s degree or diploma in computer science, information technology, cybersecurity, engineering, or a related discipline, or equivalent practical experience.
• Typically, seven or more years of cybersecurity experience, including significant recent experience delivering Microsoft Sentinel and Defender engineering work.
• Experience working in a client-facing consulting, MSSP, MDR, or enterprise security engineering role.

Responsibilities

• Lead the technical design and implementation of Microsoft Sentinel SIEM and SOAR solutions for MDR clients.
• Design workspace, data ingestion, retention, access-control, and multi-tenant operating models.
• Configure Microsoft Sentinel and related Azure resources for clients.

Skills

Microsoft Sentinel

KQL

Azure Logic Apps

Azure Defender

Azure Lighthouse

Entra B2B

SIEM/SOAR

Threat hunting

Incident response

Education

Bachelor’s degree or diploma in CS/IT/Cybersecurity

Tools

Log Analytics

Data connectors

Job description

EY is seeking a senior, hands‑on Microsoft security engineer to support the design, implementation, and continuous improvement of our MDR services. You will architect and deploy Microsoft Sentinel, engineer detections, and build automation with Azure Logic Apps for multinational clients.

As a senior engineer, you will onboard customer environments through Azure Lighthouse and Entra B2B, collaborating with delivery teams and stakeholders to drive production-ready security outcomes.