Systems Administrator

About the role

MasTec Communications Group is a leading national infrastructure construction company operating throughout the United States. We perform both wireline and wireless communication services on a national scale. We are seeking a skilled and proactive Linux System Administrator to maintain, secure, and optimize our Linux-based infrastructure while supporting virtualized environments and ensuring reliable system performance and connectivity.

Responsibilities

• Install, configure, and maintain RHEL systems across physical and virtual environments.
• Administer VMware ESXi hosts and vSphere environments.
• Develop and maintain automation workflows for RHEL systems using tools such as Ansible, Bash, and Python to enhance system reliability and operational efficiency.
• Automate network infrastructure tasks using Ansible, Python, NETCONF/YANG, and CLI scripting.
• Create scripts and utilize APIs to integrate systems and extract actionable data for cross-functional automation and reporting.
• Monitor system performance and ensure availability and reliability.
• Apply OS patches and upgrades regularly; update administrative tools and utilities.
• Troubleshoot hardware, software, and network issues in a timely manner.
• Implement and enforce system security policies and procedures.
• Maintain comprehensive documentation for system configurations, procedures, and troubleshooting.
• Collaborate with network and security teams to ensure seamless integration and compliance.
• Configure and maintain BIND DNS and KEA DHCP.
• Understand and work with enterprise backup solutions.
• Participate in on-call rotation and respond to incidents as required.
• Perform other duties as assigned by management.

Requirements

• Proven experience as a Linux System Administrator, preferably with RHEL.
• Hands-on experience with VMware ESXi and vSphere.
• Basic understanding of networking concepts (TCP/IP, DNS, DHCP, VLANs, firewalls).
• Proficiency in scripting languages such as Bash and Python for automation.
• Strong problem-solving and communication skills.
• Ability to work independently and as part of a team.
• Must have, or be able to obtain, and maintain a valid New Mexico state driver’s license, have an excellent driving record, and be insurable under the Company’s insurance policy.

Preferred Qualifications

• Red Hat Certified System Administrator (RHCSA) or higher.
• VMware Certified Professional (VCP) certification.
• Experience with configuration management tools (e.g., Ansible, Puppet).
• Familiarity with Docker containers.
• Exposure to cloud platforms (AWS, Azure) is a plus.