Senior System Engineer

HCA Healthcare is a leading organization committed to giving back to the community. They are seeking a highly skilled Senior System Engineer to design, implement, secure, and maintain enterprise identity and infrastructure platforms, ensuring high availability, security, and performance across hybrid environments.

Responsibilities:

• Design, deploy, and maintain on-premises Active Directory environments (multi-domain/forest, trusts, GPOs, DNS, DHCP)
• Manage hybrid identity solutions including Azure AD / Entra ID, Azure AD Connect, cloud sync, and federation (AD FS where applicable)
• Implement and maintain identity security controls such as tiered administration, least privilege, privileged access management, and conditional access
• Perform AD health monitoring, replication troubleshooting, metadata cleanup, and disaster recovery planning
• Manage authentication and authorization services including Kerberos, NTLM, LDAP, and certificate-based authentication
• Perform daily and weekly backups of Active directory both On-Prem and in the Cloud for Disaster Recovery
• Manage vulnerability scans and remediations of the Active Directory environments
• Engineer and support Windows Server environments (2016/2019/2022)
• Manage patching, hardening, baselines, and compliance using industry best practices and security frameworks
• Develop and maintain Group Policy Objects (GPOs) for servers and workstations
• Automate administrative tasks using PowerShell
• Support Windows failover clustering, file services, and core infrastructure services
• Respond to incidents affecting identity, authentication, and core infrastructure services
• Participate in security audits, vulnerability remediation, and post-incident reviews
• Create and maintain technical documentation, diagrams, and standard operating procedures
• Work closely with security, networking, and cloud teams to support enterprise initiatives
• Understanding of Project Management and problem management skill sets
• Meet IT&S change management and project management requirements
• ITIL Knowledge
• Moderate travel (up to 50%) for analysis and upgrades

Requirements:

• Bachelor's Degree preferred
• Five or more years of relevant work experience
• Advanced knowledge of Windows Server administration and engineering
• Proven experience supporting VMware vSphere environments
• Strong PowerShell scripting and automation skills
• Solid understanding of identity security concepts and best practices
• Experience with Zero Trust, Conditional Access, or Privileged Identity Management (PIM)
• Familiarity with Microsoft Defender, Sentinel, or identity-related security tooling
• Experience in healthcare, financial, or other regulated environments
• Strong analytical and troubleshooting abilities
• Excellent documentation and communication skills
• Ability to work independently and collaboratively in high-impact environments
• Calm, methodical approach during outages or security events
• Certifications desired such as: Microsoft (AZ-800/801, SC-300, AZ-104), VMware (VCP), CompTIA Security+ or equivalent