Senior System Engineer​/Administrator

Job Title

Senior System Engineer/Administrator

Dallas, TX (Onsite)

We are seeking a proactive and skilled Mid-Level Systems Administrator/Engineer to join our IT Infrastructure team. This role is crucial for maintaining the stability, security, and efficiency of our on-premises infrastructure. The successful candidate will leverage their expertise in Windows Server environments, Active Directory, virtualization, and systems management tools to support our growing business needs. This position requires a blend of administrative and engineering skills, focusing on hands‑on support, troubleshooting, and continuous improvement of our core IT systems.

• Active Directory & Identity Management: Manage and troubleshoot Active Directory Domain Services (AD DS), including user accounts, group policies, DNS integration, and replication issues.
• DNS & DHCP Administration: Configure, maintain, and troubleshoot internal DNS and DHCP services to ensure reliable network resolution and IP assignment.
• Group Policy Management: Develop, implement, and troubleshoot complex Group Policy Objects (GPOs) to enforce security settings, software deployments, and desktop configurations.
• Certificate Services (PKI): Assist with the administration and lifecycle management of digital certificates, including installation, renewal, and revocation.
• System Center Configuration Manager (SCCM/MECM): Deploy, manage, and troubleshoot operating system deployments (OSD), software distribution, patch management, and inventory collection using SCCM.
• On-Premise Infrastructure Management: Maintain and monitor Windows Server operating systems (2016, 2019, 2022) and underlying server hardware (e.g., Dell, HPE).
• Power Shell Scripting & Automation: Develop and maintain Power Shell scripts to automate routine administrative tasks, report generation, and system configuration.
• VMware Virtualization: Administer and maintain our VMware vSphere environment, including vCenter Server, ESXi hosts, virtual machine provisioning, resource allocation, and performance monitoring.
• Monitoring & Troubleshooting: Actively monitor system performance, respond to alerts, and perform root cause analysis for infrastructure-related incidents.
• Documentation: Create and maintain comprehensive documentation for system configurations, processes, and troubleshooting guides.
• Collaboration & Support: Work closely with other IT teams and end-users to provide technical support and contribute to infrastructure projects.

• 5-7 years of experience in a Systems Administrator or Systems Engineer role.
• Proven expertise in managing and troubleshooting Active Directory, DNS, and DHCP in a production environment.
• Strong experience with Group Policy creation, deployment, and troubleshooting.
• Hands‑on experience with Microsoft SCCM (or MECM) for endpoint management.
• Solid understanding and practical experience with VMware vSphere and vCenter Server.
• Intermediate to advanced Power Shell scripting capabilities for automation and system management.
• Familiarity with on-premises server hardware, storage, and networking fundamentals.
• Excellent problem-solving, analytical, and communication skills.
• Ability to work independently as well as collaboratively in a team environment.

• Experience with PKI and certificate lifecycle management.
• Basic understanding of cloud platforms (e.g., Azure, AWS).
• Knowledge of backup and recovery solutions (e.g., Veeam, Commvault).
• Relevant industry certifications (e.g., MCSA/MCSE, VCP).
• Experience with ITIL frameworks.