Systems Administrator

SEFNCO Communications Inc; Loving (NM); On-site; USD 75,000 - 110,000; Full time

Job summary

MasTec Communications Group is seeking a skilled Linux System Administrator with RHEL expertise to maintain and secure our Linux infrastructure across physical and virtual environments. You will manage VMware ESXi/vSphere, craft automation with Ansible, Bash, and Python, and automate networking tasks using NETCONF/YANG and CLI scripting.

The role requires strong problem-solving and communication skills, ability to work independently and in a team, and familiarity with backup, DNS/DHCP services,

Qualifications

• Experience as a Linux System Administrator with RHEL.
• Hands-on VMware ESXi and vSphere experience.
• Basic networking knowledge: TCP/IP, DNS, DHCP, VLANs.
• Scripting in Bash and Python for automation.
• Strong problem-solving and communication skills.
• Ability to work independently and in a team.

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 using Ansible, Bash, and Python.
• Automate network tasks using Ansible, Python, NETCONF/YANG, and CLI scripting.
• Create scripts and use APIs to integrate systems and extract data for automation and reporting.
• Monitor system performance and ensure availability and reliability.
• Apply OS patches and upgrades; update admin tools.
• Troubleshoot hardware, software, and network issues promptly.
• Enforce system security policies and maintain documentation.
• Collaborate with network and security teams for integration and compliance.
• Configure and maintain BIND DNS and KEA DHCP.
• Maintain awareness of enterprise backup solutions.
• Participate in on-call rotation and respond to incidents.

Skills

RHEL Linux

VMware ESXi

Bash scripting

Python scripting

Ansible

Puppet

Docker

AWS

Azure

Networking basics

RHCSA

VCP

Tools

Ansible

Puppet

Docker

AWS

Azure

Job description

Overview

MasTec Communications Group is a leading national infrastructure construction company operating throughout the United States.MasTec Communications Group performs both wireline and wireless communication services on a national scale.

We are seeking a skilled and proactive Linux System Administrator with expertise in Red Hat Enterprise Linux (RHEL), VMware ESXi virtualization, automation scripting, and foundational networking. The ideal candidate will be responsible for maintaining, securing, and optimizing our Linux-based infrastructure while supporting virtualized environments and ensuring reliable system performance and connectivity.

Responsibilities

Essential Job Functions:

• 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.
• Understanding of enterprise backup solutions.
• Participate in on-call rotation and respond to incidents as required.
• Perform other duties as assigned by management.

Qualifications

Knowledge, Skills & Abilities:

• 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.

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.

Licenses, Registrations: 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.

MasTec, Inc. is an equal employment opportunity employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal and local laws respecting consideration of unemployment status in making hiring decisions.

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