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Apptoza Inc.

Microsoft Defender Security Engineer

Calgary, AB, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Dec 4, 2026
Posting language: English
Posted: Nov 4, 2026

Original job description

Role: Microsoft Defender Security Engineer

Location: Calgary, AB – Onsite

Job Description

Required Technical Skills

Microsoft Defender for Endpoint (MDE)

Microsoft Defender for Identity (MDI)

Microsoft Defender for Cloud Apps (MDCA)

CrowdStrike Falcon

Proofpoint Email Security

Security Incident Investigation and Response

Threat Hunting and Threat Intelligence

Endpoint Detection & Response (EDR)

SIEM/SOAR integration knowledge (Microsoft Sentinel preferred)

Windows Server and Active Directory Security

Email Security and Anti-Phishing Controls

Security Monitoring and Alert Triage

Key Responsibilities

Administer and support Microsoft Defender Suite (MDE, MDI, MDCA).

Manage CrowdStrike Falcon platform including policy tuning, threat detection, and endpoint protection.

Monitor and administer Proofpoint email security solutions to protect against phishing, malware, and business email compromise attacks.

Investigate security alerts and incidents, perform root cause analysis, and provide remediation recommendations.

Conduct proactive threat hunting across endpoints, identities, cloud applications, and email environments.

Fine-tune detection rules and security policies to reduce false positives and improve security visibility.

Integrate security tools with SIEM platforms such as Microsoft Sentinel.

Develop and maintain security monitoring dashboards, reports, and operational documentation.

Collaborate with infrastructure, application, and SOC teams during incident response and remediation activities.

Support vulnerability management and security compliance initiatives.

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More about this job

Responsibilities

Administer and tune Microsoft Defender, CrowdStrike Falcon, and Proofpoint security platforms; investigate incidents, hunt for threats, and recommend remediation. Integrate tools with SIEM platforms, maintain monitoring dashboards and documentation, and collaborate with technical and SOC teams on response, compliance, and vulnerability management.

Requirements

The role requires hands-on knowledge of Microsoft Defender for Endpoint, Identity, and Cloud Apps, CrowdStrike Falcon, and Proofpoint Email Security. Candidates should also have experience with incident response, threat hunting, EDR, SIEM/SOAR integration, Windows Server and Active Directory security, email protection, and security monitoring.

Skills

Microsoft Defender for Endpoint
Microsoft Defender for Identity
Microsoft Defender for Cloud Apps
CrowdStrike Falcon
Proofpoint Email Security
Security Incident Investigation and Response
Threat Hunting
Threat Intelligence
Endpoint Detection and Response
SIEM/SOAR Integration
Microsoft Sentinel
Windows Server Security
Active Directory Security
Email Security
Security Monitoring and Alert Triage
Vulnerability Management

Visa sponsorship

Not detected in the job text

Keywords

Microsoft Defender for Endpoint
Microsoft Defender for Identity
Microsoft Defender for Cloud Apps
CrowdStrike Falcon
Proofpoint Email Security
Microsoft Sentinel
SIEM
SOAR
Endpoint Detection and Response
Incident Investigation
Incident Response
Root Cause Analysis
Threat Hunting
Threat Intelligence
Detection Rules
Security Policies
Security Monitoring
Alert Triage
Windows Server
Active Directory
Email Security
Anti-Phishing
Business Email Compromise
Vulnerability Management
Security Compliance
Security Dashboards
Endpoint Protection

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