Senior Systems Administrator

NFI; Eastvale (CA); On-site; USD 110,000 - 150,000; Full time

Job summary

NFI is seeking a Senior Systems Administrator to own lifecycle management of infrastructure services—from on-premise compute and storage to cloud and containerized environments. You’ll collaborate with business unit leaders and IT teams to deliver reliable platforms that support critical business applications.

The role emphasizes cross-functional ownership, incident response, security hardening, and continuous improvement in a dynamic IT environment. On-call rotation may be required.

Qualifications

• Bachelor's degree or equivalent experience.
• 5+ years of cross-domain infrastructure experience with Linux and Windows server administration.
• Experience with monitoring platforms such as SolarWinds.
• Cloud experience with Azure, AWS, Google Cloud, or OCI.

Responsibilities

• Administers and provides overall support and maintenance of infrastructure systems and network connectivity for all systems.
• Evaluates system performance to ensure adequate response times for production applications.
• Establishes and documents procedures to ensure data integrity including fail-over and backup/recovery.
• Coordinates hardware repairs with vendors and manages lifecycle of infrastructure assets.
• Participates in ITIL activities including Change, Release, Incident, and Problem Management.
• On-call rotation for off-hours support to ensure service delivery.

Skills

Linux OS

Windows Server

SolarWinds

Ansible/AWX

Azure Cloud

AWS Cloud

Google Cloud

OpenShift

Docker

Kubernetes

Bash

Python

PowerShell

Education

Bachelor's degree or equivalent

Tools

AWX

Citrix NetScaler / F5

Terraform

GitHub/GitLab CI

Puppet

Job description

As a member of the Infrastructure & Operations team, the Senior Systems Administrator provides lifecycle management of infrastructure services including planning, engineering, and support. This is a highly cross-functional role ideal for an engineer who thrives outside of narrow silos and enjoys taking ownership across the entire technology stack—from on-premise compute and storage to cloud and containerized environments. You’ll engage with business unit leaders and Information Technology teams to collaborate on solutions that drive our operational success.

Responsibilities

• Administers and provides overall support and maintenance of infrastructure systems and network connectivity for all systems.
• Evaluates system performance on a daily basis to ensure adequate response times for production applications.
• Establishes and documents procedures to ensure data integrity including system fail-over and backup/recovery.
• Manages backup and recovery including data retention and reporting
• Conducts routine hardware and software audits of servers for compliance with established standards, policies, configuration guidelines, and procedures.
• Provides recommendations to management on changes, upgrades, and new hardware as required.
• Provides support to vendors and application teams as necessary.
• Maintains current operating systems and patch versions that comply with vendor and company requirements.
• Coordinates hardware repairs with appropriate vendors on supported platforms as necessary.
• Performs research and development on new products, technologies, and operating systems as required.
• Participates in established ITIL activities, including Change Management, Release Management, Incident Management, and Problem Management.
• Participates in the on-call rotation, providing off-hours support as required to perform necessary job functions and ensure service delivery.
• Remain current on emerging technologies and their potential application in our technology ecosystem.
• Performs other duties and responsibilities as required by the role and determined by management

Qualifications

• BA/BS degree strongly preferred, will consider comparable work experience
• 5+ years of progressive, cross-domain Infrastructure experience with a strong foundation in Linux and Windows server administration
• Proven ability to manage a diverse infrastructure stack, including hands‑on experience with:
• SolarWinds or other infrastructure monitoring platforms
• Ansible, such as creating playbooks and maintaining an AWX environment
• Experience with cloud providers such as Azure, AWS, Google Cloud, OCI or other hyperscaler.
• Datacenter equipment such as blade servers, SANs, and storage networking
• Experience with load balancers such as Citrix NetScaler or F5
• Experience with RedHat Openshift or other containerization technologies like Docker and Kubernetes
• Scripting proficiency in Bash, Python, or PowerShell

Great To Have

• Familiarity with infrastructure-as-code (IaC) tools like Terraform.
• Experience working with CI/CD pipelines with services such as GitHub or GitLab
• Experience with Puppet, such as creating modules and developing tests
• Experience with enterprise collaboration tools such as Google Workspace and Microsoft 365

Essential Skills

• Excellent analytical, troubleshooting, and problem-solving skills
• Outstanding communication and interpersonal skills, including the ability to clearly and concisely explain technology solutions in business terms.
• Knowledge of networking fundamentals, security best practices, and system hardening techniques.
• A "generalist" mindset with the ability to troubleshoot and take end-to-end ownership of projects across multiple
• infrastructure domains (compute, network, storage, cloud).
• Learns quickly and makes steady progress without the need for constant significant feedback from more senior team members.
• Effective team member on concurrent tasks/projects.
• Good coaching skills
• Excellent people skills.
• Attention to service excellence and detail.

Certifications Desired

• Red Hat: RHCSA, RHCE, or equivalent
• Microsoft: MCSA, MCSE, or Azure equivalent
• Cloud/Infrastructure: AWS, Azure, GCP, or ITIL certifications

Equal Opportunity Employer/Protected Veterans/Individuals With Disabilities

The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)
LA County Applicants: The Company will consider qualified applicants, including those with criminal histories, in a manner consistent with applicable state and local laws.

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