Senior System Administrator

We are seeking a highly professional and motivated Senior System Administrator to join our engineering team and help define and drive the future of a market-leading Network Access Control (NAC) product suite. This role supports a diverse portfolio including Network Access Control, Endpoint Compliance, Mobile Control, and Intrusion Prevention. The environment spans client/server applications, web applications, cloud integrations, and third-party devices and software.

What You Will Do

Design, set up, manage, and troubleshoot network infrastructure.
Perform system setup, integration, and validation of hardware and software network devices.
Execute ongoing maintenance of servers, workstations, and network elements to support engineering teams.
Support the design, validation, and configuration management of lab systems.
Administer user access and protect information in accordance with security requirements.
Monitor system performance to support capacity planning, backups, and disaster recovery.
Manage budgeting needs for the engineering lab environment.

What You Bring

Professional Skills

5–7+ years of experience managing engineering datacenter labs supporting software and hardware development.
Extensive experience with virtualization platforms (Hyper-V, Nutanix AHV, KVM, VMware) and network architectures (Cisco, Juniper, Brocade).
Strong expertise administering Windows and Linux server operating systems.
Experience with VMware vRealize/Aria and lab automation tools.
Working knowledge of Jira and Confluence.
Hands-on experience with Linux, Python, and scripting for automation (preferred).
Strong analytical and troubleshooting skills.
Deep understanding of highly available, resilient, and scalable network infrastructures.
Proficiency with IPv4/IPv6 addressing.

Personal Skills

Independent, proactive, and quality-focused.
Fast learner with strong problem-solving abilities.
Excellent communication and collaboration skills.
Comfortable producing technical documentation and reports.
Motivated to learn and apply new technologies to improve productivity.

Type: Contract (12+ months)

Location: Plano, Texas (3 days on site)

Calabria Group: Innovation Technology Delivery

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Senior System Administrator