Senior IT Systems Administrator - Security Projects

Description

The Role: Senior Microsoft Systems Administrator, Security Projects

Who You Are:

You're an experienced senior level systems administrator with deep Microsoft expertise who will focus exclusively on security projects and initiatives rather than routine administrative duties. You'll leverage your advanced technical background to lead strategic security implementations in a 24x7x365 emergency services environment where system security and reliability are critical.

Who We Are:

Established in 1989 Kings III is a growing, dynamic company. We’re a five-time winner of DFW Top Workplaces and nationally as a USA Today Top Workplace in 2020-2024. We’re on a mission for change – for our communities, our customers, and our company. If you see yourself as a builder and change agent, this is the right place for you.

More than 12% of our employees have been with the company for 10+ years, and an impressive 25% have been with us 5+ years. How do we do it? Here's what our employees say. We seek out creative employees who love opportunities for continuous learning and growth. We value innovation in not just our products, but the way we work, sell, and grow every day. We celebrate change and are always looking for ways to do things better!

What You'll Do:

• Design, implement, and maintain complex Windows Server environments (2016/2019/2022) with focus on security hardening, vulnerability management, and compliance controls
• Conduct security hardening of Windows Server environments using CIS benchmarks, Microsoft Security Compliance Toolkit, and industry baselines
• Lead Microsoft 365 tenant security administration including advanced Exchange Online, SharePoint Online, Teams, and Power Platform management
• Implement and optimize Entra ID with comprehensive security features including Conditional Access, Identity Protection, Privileged Identity Management, Zero Trust architecture, identity governance, and Azure AD Connect management with custom attribute mapping, advanced filtering, and synchronization optimization
• Manage security of enterprise infrastructure including SQL Server, virtualization, network infrastructure, Veeam backup administration, and related technologies with focus on security hardening, performance optimization, and compliance controls
• Deploy and manage security platforms including EDR/XDR, Microsoft Sentinel, Purview, and SIEM solutions with focus on log integration and threat analysis
• Implement and manage email security and MDM solutions (Mimecast, Purview, Intune) for comprehensive device and communication protection
• Configure and optimize network security infrastructure including FortiGate firewalls, regular rule reviews, traffic analysis, and Microsoft ecosystem integration
• Advanced PowerShell scripting and Microsoft Graph API integration
• Lead vendor security assessments, technology evaluations, and strategic security initiative planning with Manager of Information Security
• Support SOC2 Type II and NIST 800-53 compliance efforts

What You'll Bring:

• High school diploma or equivalent
• At least 5 years of IT systems and network experience with increasing responsibility
• 5+ years senior level Windows Server and Active Directory administration experience
• 3+ years Microsoft 365 enterprise administration with Entra ID hybrid environments
• Microsoft certifications preferred (Azure Administrator, M365 Enterprise Administrator)
• Security certification preferred (Security+, CISSP, CISM)
• Expert-level Windows Server administration knowledge including Active Directory, DNS, DHCP, Group Policy
• Deep Entra ID expertise with Conditional Access, identity governance, and Zero Trust architecture
• Proven ability to lead complex technical projects and collaborate with cross-functional teams
  

What We Do:

Our mission is simple - We provide critical communications services to help people in distress.

Our Core Values are even simpler:

1. Honesty & Integrity

2. Service to the customer above all else

3. Do what is right

4. Good enough is not good enough: pursue excellence

5. Encourage individual initiative and growth

By living and breathing our mission and Core Values every day in everything we do, Kings III is creating opportunities for individuals and reducing risk, liabilities, and costs for businesses every day.

Our primary client base includes commercial and multi-family real estate owners and property managers, and the most common areas we install o