Systems Engineer - Messaging & Groupware
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Key skills for this role
About the Role
Dicetek LLC seeks a Systems Engineer to manage vulnerability remediation, patch deployment, and security hardening across Active Directory, Windows Server, Microsoft Exchange, and Entra ID.
Key Skills for This Role
Responsibilities
- Manage end to end vulnerability lifecycle using Qualys and Microsoft Defender
- Deploy Windows patches, Exchange SU/CU, and emergency updates
- Manage Entra ID and Azure AD Connect, monitor identity sync and authentication
- Manage hybrid mail flow and configuration for Exchange
- Perform impact analysis and validate backup/rollback strategies before patching
- Execute patching via CAB approvals with rolling DC and DAG based Exchange patching
- Validate AD, Exchange, and Entra ID health post patching
- Ensure compliance with PCI DSS / ISO standards and support audits
- Develop PowerShell automation for vulnerability tracking and reporting
- Participate in 24x7 on call rotation for critical incidents
Requirements
- 4 7 years of experience in Microsoft infrastructure environments
- Experience in vulnerability management and patching
- Experience in Hybrid Exchange and Entra ID environments
- Good communication and coordination skills
- Experience in large enterprise or banking environments
- Exposure to regulatory and audit frameworks
- Microsoft Azure / Windows Server / Security certifications preferred
Full Job Posting
Role Purpose
- Responsible for managing vulnerability remediation, patch deployment, and security hardening across Active Directory, Windows Server, Microsoft Exchange (on premises and hybrid), and Microsoft Entra ID (Azure AD). Ensures confidentiality, integrity, and availability of identity and messaging platfor
Experience Required
- 4–7 years in Microsoft infrastructure environments
- Experience in vulnerability management and patching
- Experience in Hybrid Exchange and Entra ID environments
- Good communication and coordination skills
- Experience in large enterprise or banking environments
- Exposure to regulatory and audit frameworks
Preferred Certifications
- Microsoft Azure / Windows Server / Security certifications
Key Responsibilities
- Manage end to end vulnerability lifecycle using Qualys, Microsoft Defender
- Analyze findings across Domain Controllers, Exchange, Windows Servers, and Entra ID
- Prioritize remediation based on CVSS, exploitability, and business impact
- Ensure remediation within SLA timelines
- Provide risk acceptance and compensating controls
- Generate audit ready reports and dashboards
- Responsible for patching AD Domain Controllers, Exchange Servers, Hybrid components, and Windows Servers
- Deploy Windows patches, Exchange SU/CU, and emergency updates
- Ensure minimal downtime patching strategies
- Manage Entra ID and Azure AD Connect
- Monitor identity sync and authentication methods
- Remediate identity vulnerabilities and MFA/CA misconfigurations
Additional Responsibilities
- Manage hybrid mail flow and configuration
- Ensure continuity of services like Free/Busy and Autodiscover
- Troubleshoot hybrid mail routing and authentication issues
- Review CVEs, advisories, and dependencies
- Perform impact analysis on authentication and messaging
- Validate backup and rollback strategies
- Execute patching via CAB approvals
- Perform rolling DC patching and DAG based Exchange patching
- Ensure no service disruption
- Validate AD, Exchange, and Entra ID health
- Monitor logs and alerts
- Perform re scans and implement hardening measures
Compliance & Automation
- Ensure compliance with PCI DSS / ISO standards
- Maintain remediation evidence and reports
- Support audits and regulatory assessments
- Develop PowerShell automation
- Automate vulnerability tracking and reporting
- Prepare dashboards and metrics
- Actively participate in 24x7 On Call rotation, providing support for critical incidents
- Ensure timely resolution of production issues and service restoration
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