Platform Engineer - Security Focus

25%). The Platform Engineer will be responsible for maintaining,

troubleshooting, and optimizing Windows Server, Microsoft 365, Azure,

and line-of-business systems while also supporting security incident

response, email threat analysis, endpoint protection, and identity

security. This position requires a professional who can operate

confidently in production environments, manage client communications,

and make sound technical decisions under pressure.

Responsibilities (include but are not limited to):

Infrastructure & Application Support:

• Serve as the escalation point for complex infrastructure and

application issues across multi-tenant environments.

• Triage and optimize monitoring and alerting systems to reduce noise

and prevent incidents.

• Diagnose and restore line-of-business applications, including payroll,

HR, accounting, and public safety systems.

• Manage Windows Server environments including services, storage,

permissions, and diagnostics.

• Perform SQL Server operator-level administration and health checks.

• Manage endpoints, virtual desktop environments, and mobile device

management policies.

• Lead change management processes including patching, deployments, and

validation.

• Maintain accurate ticketing and coordinate high-priority incidents and

vendor escalations.

Microsoft 365 & Identity:

• Administer Microsoft 365 and Exchange Online environments.

• Manage identity lifecycle across Active Directory and Entra ID.

• Configure and troubleshoot email authentication protocols (SPF, DKIM,

DMARC) and DNS records.

• Administer firewall and VPN solutions, including FortiGate systems.

Security Operations:

• Triage and investigate phishing emails and user-reported threats.

• Analyze DMARC reports and recommend policy improvements.

• Configure and maintain Microsoft Defender for Office 365 protections.

• Administer application control tools such as ThreatLocker.

• Perform identity security tasks including MFA resets and session

revocation.

• Coordinate with MDR/SOC providers to respond to alerts and incidents.

• Investigate suspicious sign-ins and audit logs within Entra ID.

• Execute rapid response actions such as IP or domain blocking during

5+ years of experience in aManaged Service Provider (MSP)environment

in a senior orLevel 3role.

• Candidates need hands-on production experience with M365 administration, Entra, Intune, Conditional Access, and Azure

• Strong expertise inWindows Server administration, includingGroup

Policy and Hyper-V.

• Proven experience withMicrosoft 365and Exchange Online

administration.

• Proficiency in Active Directory andEntra IDidentity management.

• Experience with email authentication protocols (SPF, DKIM, DMARC).

• Firewall and VPN administration experience (FortiGate preferred).

• Experience with RMM tools such as Datto RMM or NinjaOne.

• Hands-on experience with phishing triage and security incident

response.

• Familiarity with endpoint application control platforms such as

ThreatLocker.

• Experience working with MDR/SOC providers.

• SQL Server operator-level knowledge.

• PowerShell scripting experience.

• Demonstrated ability to manage multiple environments under change

control.

• Strong communication skills for technical and non-technical audiences.

Desired Qualifications:

• Experience with Microsoft Defender for Endpoint (MDE).

• Familiarity with SIEM platforms such as Todyl, Adlumin, or Azure Log

Analytics.

• Experience with Azure infrastructure including VMs, AVD, and

networking.

• Experience supporting payroll, HR, or financial applications.

• Familiarity with vulnerability management tools such as Tenable.io.

• Experience administering security awareness platforms.

• Knowledge of compliance frameworks such as CIS and SOC 2.

• Familiarity with Microsoft 365 Government (GCC High).

• Relevant Microsoft security certifications (SC-900, MS-500, AZ-500).

Education:

• Bachelors Degree

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