Posted yesterday
Senior Microsoft Security Engineer – Security Hardening (3-Month Contract)
@ Poly Tech Talent
Toronto, Ontario
Overview
Poly Tech Talent is hiring a Senior Microsoft Security Engineer for a 3-month contract in Mississauga, ON, with a hybrid arrangement. The role hardens Active Directory, Entra ID, Microsoft 365 and Intune through hands-on assessment and remediation, plus PowerShell and Microsoft Graph automation.
Responsibilities:
- Assess and harden Active Directory, Entra ID and Microsoft 365 against Microsoft and CIS practices
- Review and strengthen identity security, MFA, Conditional Access and PIM
- Remediate Group Policy, Intune configurations and legacy authentication
- Automate security improvements with PowerShell and Microsoft Graph
- Document findings, remediation and recommendations
Requirements summary:
- Hands-on experience securing Active Directory, Entra ID and Microsoft 365
- Experience with Defender or CrowdStrike
- Strong knowledge of Conditional Access, MFA, PIM and identity governance
- Proficiency with PowerShell and Microsoft Graph
- Familiarity with Microsoft security frameworks and CIS benchmarks
Tools & skills
Source and dates
Source type not verified · apify-linkedin
- Employer posting date
- 2026-11-09
- First seen by our source
- 2026-11-10
- Source record updated
- 2026-11-10
These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.
Job details
| Seniority | Senior |
| Department | IT |
| Hours per week | 40 (estimated) |
| Travel | air: none · ground: none |
| Work setting | Office, Home |
| Position | Mostly sitting |
| Physical demands | physical low · computer high |
| Languages | English |
Summary and details written by AI from the posting; the employer’s posting is the authority.
Poly Tech Talent
| Field | Value |
|---|---|
| Open jobs on Jobsy | 1 |
3-Month Contract | Mississauga, ON | Hybrid
The OpportunityOur client, a large global software organization, is seeking an experienced Senior Microsoft Security Engineer to support a focused security hardening initiative across its Microsoft environment.
This is a hands-on consulting engagement requiring someone who can assess existing configurations, identify security gaps, develop recommendations and, most importantly, implement remediation measures across Active Directory, Entra ID, Microsoft 365 and Intune.
Key Responsibilities- Assess and harden Active Directory, Entra ID and Microsoft 365 environments against Microsoft and CIS security best practices.
- Review and strengthen identity security, privileged access, MFA, Conditional Access and Privileged Identity Management (PIM).
- Evaluate and remediate Group Policy, application permissions, access controls and legacy authentication protocols.
- Review Intune configurations, endpoint security policies and Windows security baselines.
- Implement improvements to M365 security, including administrative roles, external sharing, audit controls and information protection.
- Identify inactive accounts, excessive permissions and configuration vulnerabilities; implement appropriate remediation.
- Develop and execute automation using PowerShell and Microsoft Graph to support security improvements.
- Document findings, remediation activities and recommendations.
- Strong hands-on experience securing Microsoft environments, including Active Directory, Entra ID and Microsoft 365, Defender/Crowdstrike
- Demonstrated experience with security assessments, configuration hardening and remediation.
- Strong knowledge of Conditional Access, MFA, PIM, privileged access and identity governance.
- Experience with Group Policy, Intune, Windows security baselines and hybrid identity environments.
- Proficiency with PowerShell and Microsoft Graph automation.
- Familiarity with Microsoft security frameworks and CIS benchmarks.
- Ability to work independently, assess risks and translate findings into practical technical improvements.
Engagement: Initial 3-month contract
Location: Mississauga, ON – Hybrid/Remote
This is an excellent opportunity for a hands-on Microsoft security specialist to make a tangible impact on the security posture of a large, complex global environment.
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