Lumen is the trusted network for the AI‑powered world, connecting people, data, and applications through our expansive fiber network and connected ecosystem. We enable secure, high‑performance connectivity across cloud, edge, and AI workloads for enterprises, governments, and communities.

At Lumen, you’ll work on infrastructure customers rely on today and build for what’s next, where performance, security, and resilience matter.

This is a high accountability environment where bold ideas drive real innovation for our customers, partners, and industry. The work is challenging, expectations are clear, and trust is built into how we operate. If you’re ready to take ownership, deliver meaningful impact, and help shape the future of AI‑ready connectivity, join us today.

The Role

Microsoft Windows and LINUX Red Hat System Administrator Work location is San Antonio

The Main Responsibilities

•Utilize trouble ticketing systems to document and track outages. •Exercise sound judgment during the escalation of trouble tickets. •Provide advanced Tiers II and III support by remotely troubleshooting and repairing transport backbone equipment, sub-tending devices, and user applications/services for a nationwide fiber optic transport network and two geographically separated network operations centers. •Perform advanced troubleshooting as the internal escalation point of contact for complex and persistent trouble tickets. •Interact extensively with internal engineering and support teams as well as with Tier IV support engineers of various hardware/software vendors to solve challenging issues. •Interact closely with network engineers, security personnel, program managers and vendors to meet network performance criteria. •Act as network operations technical lead on new and emerging network management/defense requirements and designs. •Manage and participate in enterprise-level projects encompassing systems, networks, and SAN/NAS storage. •Respond to network and system issues by isolating the problem and utilizing resources in a manner which least disrupts network availability. •Perform diagnostics using software and hardware tools to optimize network performance. •Oversee/monitor status of systems and equipment to address potential technical problems. Inspect and analyze equipment/systems performance to determine maintenance and repair requirements. •React quickly and competently to identify, track, document, escalate, and resolve immediate network vulnerabilities/threats. •Configure, maintain and monitor Windows Server Failover Clusters, McAfee EPO, SQL, SolarWinds, SharePoint, Red Hat Linux, and Exchange Servers •Conduct risk assessments to identify possible security violations using ACAS and DoD STIGs. •Develop methods and procedures to ensure systems and applications are protected. •Develop and implement detailed standard operations procedures. •Provide after-hours support on an on-call basis, as required. •Perform other duties as required. •Estimated 15% of time is travel; however, the amount of travel is dependent on the current mission requirement and operations environment.

What We Look For in a Candidate

•MSCA certifications desired. •RHCE certification desired •DoD 8570 IAT Level II certification or above required. •Bachelor’s degree in the Information Technology field and three years’ experience or seven years’ applicable work experience desired. •Experience with Windows Server 2016/2019/2022, SQL, SolarWinds, SharePoint, Red Hat Linux, Exchange, IDS/IPS, Firewall and Host Based Security, ACAS, Sun Solaris servers, Cisco/Juniper devices, highly desired. •Top Secret clearance mandatory and current SCI mandatory.

Compensation

This information reflects the anticipated base salary range for this position based on current national data. Minimums and maximums may vary based on location. Individual pay is based on skills, experience and other relevant factors.

Location Based Pay Ranges

$105,786 - $141,047 in these states: AL AR AZ FL GA IA ID IN KS KY LA ME MO MS MT ND NE NM OH OK PA SC SD TN UT VT WI WV WY $111,074 - $148,099 in these states: CO HI MI MN NC NH NV OR RI $116,364 - $155,152 in these states: AK CA CT DC DE IL MA MD NJ NY TX VA WA

Lumen offers a comprehensive package featuring a broad range of Health, Life, Voluntary Lifestyle benefits and other perks that enhance your physical, mental, emotional and financial wellbeing. We're able to answer any additional questions you may have about our bonus structure (short-term incentives, long-term incentives and/or sales compensation) as you move through the selection process.

Learn more about Lumen's: Benefits

Bonus Structure

#LI-Remote

Requisition #: 343227

Life at Lumen

Life at Lumen is human and connected, even in a fast moving, AI‑focused organization. We set clear expectations and trust people to meet them. With real support and shared accountability, teams collaborate better, move faster, and deliver meaningful outcomes.

Our Lumen 8 behaviors guide how we interact, make decisions, and work together, shaping a culture built to perform and win.

To learn more about Life at Lumen and how we live the Lumen 8, please visit: https://jobs.lumen.com/global/en/life-at-lumen

Background Screening

If you are selected for a position, there will be a background screen, which may include checks for criminal records and/or motor vehicle reports and/or drug screening, depending on the position requirements. For more information on these checks, please refer to the Post Offer section of our FAQ page. Job-related concerns identified during the background screening may disqualify you from the new position or your current role. Background results will be evaluated on a case-by-case basis.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Equal Employment Opportunities

We are committed to providing equal employment opportunities to all persons regardless of race, color, ancestry, citizenship, national origin, religion, veteran status, disability, genetic characteristic or information, age, gender, sexual orientation, gender identity, gender expression, marital status, family status, pregnancy, or other legally protected status (collectively, “protected statuses”). We do not tolerate unlawful discrimination in any employment decisions, including recruiting, hiring, compensation, promotion, benefits, discipline, termination, job assignments or training.

Privacy Notice

Lumen is committed to protecting the privacy and security of personal information collected during the recruitment and hiring process. Our Applicant Privacy Notice explains how we collect, use, disclose, and protect applicant information, as well as how individuals may request access to or deletion of their personal data.

To review Lumen’s Global Employment Applicant and Talent Community Privacy Notice, please visit: https://jobs.lumen.com/global/en/privacy-notice

Disclaimer

The job responsibilities described above indicate the general nature and level of work performed by employees within this classification. It is not intended to include a comprehensive inventory of all duties and responsibilities for this job. Job duties and responsibilities are subject to change based on evolving business needs and conditions.

In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.

Please be advised that Lumen does not require any form of payment from job applicants during the recruitment process. All legitimate job openings will be posted on our official website or communicated through official company email addresses. If you encounter any job offers that request payment in exchange for employment at Lumen, they are not for employment with us, but may relate to another company with a similar name.

Lumen is the trusted network for the AI-powered world, connecting people, data, and applications through one of the world’s most expansive fiber networks. We enable secure, high-performance connectivity across cloud, edge, and AI workloads for enterprises, governments, and communities.

Everything we do at Lumen takes advantage of our network strength. From metro connectivity to long-haul data transport to our edge cloud, security, and managed service capabilities, we meet our customers’ needs today and as they build the future.