Find work in the United States.

6,334,234 jobs across our US network. How we count

Jobs in the United States

25+ jobs

Save this search

Added just now
Lead Software Engineer
TDS Telecom
Remote, United States
…support company-wide business operations. As an experienced developer and an experienced technical leader, the position receives periodic mentoring, feedback, and supervision by…
Added 2 mins ago
Associate QA Engineer (Coop or Intern)
CodeMettle
Atlanta, GA
CodeMettle provides a flexible data management software platform that solves complex, mission critical network, communications, and process management challenges. CodeMettle serves defense,…
Added 2 mins ago
MV
Case Manager - Home Youth Services
Mid-Willamette Valley Community Action Agency
Salem, OR
- $23 to $24.1 USD / hour
Works directly with clients to ensure access to housing assessments and resources.
Added 3 mins ago
Project Engineer
Hoffman Construction Company
Poulsbo, WA · Bremerton, WA · Suquamish, WA
Experience in organizing technical data in a neat and accurate method. Familiar with CSI specification system for construction.
Added 3 mins ago
A
Program Coordinator
Actalent
Orlando, FL
- $40 to $45.67 USD / hour
Excellent analytical skills with the ability to review complex documents and data for accuracy and compliance.
Added 6 mins ago
Senior Software Engineer
Jorie AI
Remote, United States
Architecture: Design services, automation, and data flows that bridge legacy systems and modern platforms, and document the tradeoffs behind each decision.
Added 6 mins ago
WU
LPN - Gastroenterology
Washington University in St Louis
United States
- $21.33 to $31.98 USD / hour
Aids in the updating and data entry in electronic medical records.
Added 6 mins ago
WU
Financial Analyst III (Remote) - Neurology
Washington University in St Louis
Remote, United States
- $53,100 to $90,600 USD / year
Analyze income and expenses, make investigations, assemble data and prepare projections and reports for planning and decision making. Process journal entries and budget adjustments for…
Added 6 mins ago
WU
Financial Accounting Assistant (Hybrid) - Surgery
Washington University in St Louis
United States
- $19.29 to $29.91 USD / hour
Assists in collection of data and reporting according to established organizational accounting procedures.
Added 6 mins ago
WU
Facilities Planning Analyst - Enterprise Physical Operations
Washington University in St Louis
United States
- $58,400 to $99,700 USD / year
…planning, and operational decision-making through advanced data analysis, business intelligence, process improvement, and planning coordination. Develops actionable insights from…
Added 6 mins ago
UN
Senior Email Analyst
USTA National Headquarters
Purchase, NY
- $70,500 to $78,000 USD / year
Leverage customer data, conditional logic, dynamic content, and personalization rules to build targeted audience segments and deliver relevant messaging.
Added 6 mins ago
WU
Clinical Research Coordinator II - Obstetrics and Gynecology
Washington University in St Louis
United States
- $54,600 to $81,900 USD / year
…writing instructional procedure manuals for study progress, data collection and coding; reviews journals, abstracts and scientific literature to keep abreast of new developments and to…
Added 7 mins ago
WU
Bioinformaticist - Gastroenterology/Hepatology
Washington University in St Louis
United States
- $55,200 to $100,000 USD / year
Assists in developing and conducting research projects, including experiment design, data analysis, and documentation of experiment results.
Added 7 mins ago
Commercial Technology Enablement Lead
Boston Scientific
Arden Hills, MN
…some of the most important health industry challenges. With access to the latest tools, information and training, we’ll help you in advancing your skills and career. Here, you’ll be…
Added 7 mins ago
Commercial Technology Enablement Lead
Boston Scientific
Arden Hills, MN
…some of the most important health industry challenges. With access to the latest tools, information and training, we’ll help you in advancing your skills and career. Here, you’ll be…
Added 7 mins ago
Senior Software Engineer
Boston Scientific
Arden Hills, MN
…some of the most important health industry challenges. With access to the latest tools, information and training, we’ll help you in advancing your skills and career. Here, you’ll be…
Added 7 mins ago
Clinical Project Manager I
Boston Scientific
Arden Hills, MN
…some of the most important health industry challenges. With access to the latest tools, information and training, we’ll help you in advancing your skills and career. Here, you’ll be…
Added 7 mins ago
Medical Assistant - Orthopedics
WellSpan Health
Chambersburg, PA
…alternative venue for care for patients with acute problems, should access not be readily available at the practice. Returns calls to patient in a timely…
Added 7 mins ago
Medical Assistant-Urgent Care
WellSpan Health
Waynesboro, PA
…alternative venue for care for patients with acute problems, should access not be readily available at the…
Added 7 mins ago
Professional Education Training Manager, Interventional Spine
Boston Scientific
New York City, NY
…some of the most important health industry challenges. With access to the latest tools, information and training, we’ll help you in advancing your skills and career. Here, you’ll be…
Added 7 mins ago
Medical Assistant-Urgent Care
WellSpan Health
Waynesboro, PA
…alternative venue for care for patients with acute problems, should access not be readily available at the…
Added 8 mins ago
Medical Assistant - Family Practice
WellSpan Health
Chambersburg, PA
…alternative venue for care for patients with acute problems, should access not be readily available at the practice. Returns calls to patient in a timely…
Added 8 mins ago
Medical Assistant - Family Practice
WellSpan Health
Aspers, PA
…alternative venue for care for patients with acute problems, should access not be readily available at the practice. Returns calls to patient in a timely…
Added 8 mins ago
Quality Intern
Boston Scientific
Arden Hills, MN
…some of the most important health industry challenges. With access to the latest tools, information and training, we’ll help you in advancing your skills and career. Here, you’ll be…
Added 8 mins ago
Product Manager III, Global Downstream Marketing EUS
Boston Scientific
Marlborough, MA
…some of the most important health industry challenges. With access to the latest tools, information and training, we’ll help you in advancing your skills and career. Here, you’ll be…

Lumen

Senior Linux Administrator (Active Clearance)

Jefferson City, MO, United States

Apply About employer

Applications open in a new tab.

Job details

Posting language: English

Original job description

Summary

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

The Senior Linux Systems Administrator will design, build, secure, operate, and maintain Linux-based infrastructure supporting a classified federal program. The position is primarily focused on advanced Linux administration, VMware and KVM virtualization, infrastructure deployment, authentication services, vulnerability management, certificate administration, monitoring, and network connectivity.

The successful candidate must be comfortable building infrastructure from the ground up and supporting it throughout its operational lifecycle. The role also includes DevOps and application-support responsibilities, including infrastructure automation, configuration management, source control, CI/CD, API integration, and troubleshooting applications that interface with network and security systems.

Location

This is a remote opportunity open to candidates located anywhere in the U.S.

The Main Responsibilities

+ Design and build secure Linux infrastructure from initial requirements through production implementation and operational handoff.

+ Install, configure, administer, patch, harden, and troubleshoot Ubuntu and Red Hat Enterprise Linux systems.

+ Perform advanced command-line administration using Bash and standard Linux diagnostic and management utilities.

+ Administer VMware ESXi, vCenter, and vSphere environments, including hosts, virtual machines, templates, storage, virtual networking, certificates, resource allocation, backups, and recovery.

+ Build and maintain KVM-based virtualization environments and support evaluation or migration between virtualization platforms.

+ Provision physical and virtual servers and integrate them with network, storage, DNS, NTP, directory, monitoring, backup, and security services.

+ Install, configure, maintain, and troubleshoot LDAP and Active Directory integrations, including LDAP, LDAPS, bind accounts, directory searches, groups, permissions, and certificate trust.

+ Manage the SSL/TLS certificate lifecycle, including private keys, certificate requests, SANs, certificate installation, chain validation, renewal, expiration tracking, and trust troubleshooting.

+ Administer Nessus vulnerability-scanning infrastructure, maintain scan configurations and schedules, analyze findings, and support remediation and validation.

+ Maintain monitoring and logging platforms such as Zabbix and Elastic Stack.

+ Troubleshoot network connectivity involving routing, DNS, ports, protocols, firewalls, switches, NAT, access controls, and application-to-system communication.

+ Create and maintain automation using Ansible, Bash, and Python.

+ Use Git and GitLab CI/CD to manage infrastructure code, scripts, configurations, and deployment workflows.

+ Read, troubleshoot, and make limited modifications to applications or services developed with frameworks such as Flask or Django.

+ Support REST API integration between applications, infrastructure platforms, and network or security elements.

+ Develop and maintain accurate build guides, system diagrams, configuration records, operational procedures, backup procedures, and recovery documentation.

+ Participate in system upgrades, incident response, problem management, capacity planning, and lifecycle management.

+ This position requires between 5-20% Travel to accommodate customer meetings and servicing hardware on-site

What We Look For in a Candidate

+ Six or more years of experience in Linux systems, infrastructure, network, security, or platform administration.

+ Advanced administration experience with Ubuntu and RHEL.

+ Strong command-line proficiency, including Bash scripting and CLI-based troubleshooting.

+ Demonstrated experience designing and building production infrastructure from the ground up.

+ Hands-on experience administering VMware ESXi, vCenter, and vSphere.

+ Experience with KVM or comparable Linux-based virtualization technology.

+ Experience administering Nessus or a comparable vulnerability-management platform.

+ Experience managing SSL/TLS certificates and public-key infrastructure concepts.

+ Strong knowledge of LDAP, LDAPS, and Active Directory integration.

+ Working knowledge of TCP/IP, routing, DNS, NTP, firewalls, switching, ports, and network troubleshooting.

+ Experience with Ansible and infrastructure automation.

+ Working knowledge of Python and Git.

+ Experience supporting monitoring and logging tools such as Zabbix and Elastic Stack.

+ Ability to troubleshoot across operating systems, virtualization, authentication, applications, and network infrastructure.

+ Active TS clearance with current SSBI/T5R investigation and CI polygraph, if those remain mandatory for the program.

Preferred qualifications

+ Experience with GitLab CI/CD.

+ Experience supporting Flask or Django applications.

+ Familiarity with Kubernetes and containerized services.

+ Experience with REST APIs and network-device integrations.

+ Experience with backup, disaster recovery, and high-availability design.

+ Experience supporting firewalls, switches, and network-security platforms.

+ Familiarity with security hardening and compliance requirements for classified or government systems.

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:

$84,629 - $112,838 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, and WY.

$88,860 - $118,480 in these states: CO, HI, MI, MN, NC, NH, NV, OR, and RI.

$93,092 - $124,122 in these states: AK, CA, CT, DC, DE, IL, MA, MD, NJ, NY, TX, VA, and 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 a...

Apply About employer

More about this job

Skills

Linux
VMware
CI/CD
Troubleshooting
Building systems monitoring technology
Ubuntu
Red Hat Enterprise Linux
Bash
DNS
Microsoft Active Directory
Zabbix
Ansible
Python
Git
GitLab
Flask
Django
Incident response
Nessus
LDAP
Troubleshoot
Kubernetes
API development
Implement ICT recovery system
Regulatory compliance

Report this job