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Senior System Administrator Jobs (NOW HIRING)

ClearEdge

Senior System Administrator

Linthicum, MD · On-site

$84K - $115K/yr

Learn more at www.clearedgeit.com/careers/ Your Mission ClearEdge is hiring a Senior System Administrator to support the administration, sustainment, and security of Linux-based systems across ...

Leidos

Senior System Administrator

Laurel, MD

$92K - $166K/yr

About the Opportunity Leidos is seeking an experienced Senior System Administrator to support the implementation, operation, troubleshooting, and maintenance of IT systems and infrastructure. You ...

ClearEdge

Senior System Administrator

Linthicum, MD · On-site

$84K - $115K/yr

Learn more at www.clearedgeit.com/careers/ Your Mission ClearEdge is hiring a Senior System Administrator to support the administration, sustainment, and security of Linux-based systems across ...

Leidos

Senior System Administrator

Laurel, MD · On-site

$92K - $166K/yr

About the Opportunity Leidos is seeking an experienced Senior System Administrator to support the implementation, operation, troubleshooting, and maintenance of IT systems and infrastructure. You ...

ClearEdge

Senior System Administrator

Linthicum, MD · On-site

$84K - $115K/yr

Learn more at www.clearedgeit.com/careers/ Your Mission ClearEdge is hiring a Senior System Administrator to support the administration, sustainment, and security of Linux-based systems across ...

Penhall Company

Senior System Administrator

Anaheim, CA · On-site

$89K - $121K/yr

Senior System Administrator Position Description The Senior Systems Administrator will serve as a critical member of Penhall's IT team, responsible for maintaining and enhancing the companys ...

Fracht Usa

Senior System Administrator

Houston, TX · On-site

$80K - $110K/yr

Senior System Administrator Full Time Clerical Houston, TX, US Salary Range: $80,000.00 To $110,000.00 Annually POSITION OVERVIEW We are seeking a Senior System Administrator to join our dynamic ...

Penhall Company

Senior System Administrator

Anaheim, CA

$89K - $121K/yr

Senior System Administrator Position Description The Senior Systems Administrator will serve as a critical member of Penhall's IT team, responsible for maintaining and enhancing the companys ...

ClearEdge

Senior System Administrator

Linthicum, MD · On-site

$84K - $115K/yr

Learn more at www.clearedgeit.com/careers/ Your Mission ClearEdge is hiring a Senior System Administrator to support the administration, sustainment, and security of Linux-based systems across ...

Saviance

Senior System Administrator

$88K - $119K/yr

Saviance is seeking a Senior System Administrator to lead L2/L3 support for business-critical applications and cloud environments. This role involves ensuring system stability, security, and ...

Match Point Solutions

Senior System Administrator

Dallas, TX · On-site

$85K - $115K/yr

Senior System Administrator Location: Dallas, TX (Onsite) Type: Long-Term Contract (W2 or C2C) Rate: $ 70 - 80/hr Responsibilities: * Administer, maintain, and support enterprise-level Windows and/or ...

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Senior System Administrator information

See salary details

$49K

$102.2K

$143.5K

How much do senior system administrator jobs pay per year?

As of Sep 13, 2026, the average yearly pay for senior system administrator in the United States is $102,229.00, according to ZipRecruiter salary data. Most workers in this role earn between $86,000.00 and $116,500.00 per year, depending on experience, location, and employer.

What does a senior system administrator do?

A Senior System Administrator is responsible for managing, maintaining, and securing an organization's IT infrastructure, including servers, networks, and related systems. They oversee the installation and configuration of hardware and software, troubleshoot complex technical issues, and ensure the reliability and performance of IT services. Senior System Administrators also implement security policies, perform regular system updates, and may supervise junior IT staff. Their expertise is essential for minimizing system downtime and protecting data integrity.

What are the key skills and qualifications needed to thrive as a senior system administrator, and why are they important?

To thrive as a Senior System Administrator, you need in-depth knowledge of operating systems, networking, security protocols, and significant experience managing IT infrastructure, usually backed by a degree in computer science or related certifications (such as CompTIA, Microsoft, or Cisco). Expertise with tools like VMware, Active Directory, PowerShell, and cloud platforms (AWS, Azure) is typically required. Strong problem-solving skills, attention to detail, and effective communication are crucial soft skills for this role. These abilities ensure reliable system performance, minimize downtime, and support the technology needs of an organization.

What are some common challenges a senior system administrator may encounter when managing hybrid cloud environments?

Senior System Administrators often face challenges balancing on-premises infrastructure with cloud-based resources, which can include ensuring consistent security policies, managing data synchronization, and monitoring system performance across multiple platforms. They must also stay updated on evolving technologies and compliance requirements, as well as collaborate closely with development, security, and networking teams. Addressing these complexities requires strong problem-solving skills, robust documentation practices, and a proactive approach to both troubleshooting and automation.

What is the difference between Senior System Administrator vs Network Administrator?

AspectSenior System AdministratorNetwork Administrator
CertificationsCompTIA Server+, Microsoft Certified: Windows Server, Cisco CCNACompTIA Network+, Cisco CCNA, Cisco CCNP
Work EnvironmentData centers, enterprise IT environments, server managementNetwork infrastructure, routing, switching, network security
ResponsibilitiesServer deployment, maintenance, troubleshooting, system upgradesNetwork setup, monitoring, troubleshooting, security management

While both roles require networking and system knowledge, Senior System Administrators focus on server and system management, whereas Network Administrators specialize in network infrastructure. Both roles are essential in enterprise IT, often collaborating to ensure seamless technology operations.

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Senior System Administrator jobs near you
Infographic showing various Senior System Administrator job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $102,229 per year, or $49.1 per hour.

Senior System Administrator

Annapolis, MD • On-site

Peterson Technologies
IT Services • 51 - 200 employees
Learn more about Peterson Technologiesexternal

$168K - $250K/yr

Full-time

Medical, Life, Retirement, PTO

Re-posted 28 days ago

Job description

Peterson Technologies has been the premier resource for mission-critical solutions through detailed analysis, strategic insight, extensive operational experience, and technical expertise. Today, we provide leading-edge data, network security software, and expert guidance to reduce exposure to information theft and augment protections for our customers systems. If you are looking to join a company that provides amazing benefits, a healthy work-life balance, competitive salaries, and talented subject matter experts, consider joining our team!
Peterson is seeking a talented Senior Systems Administrator.
Provides day to day systems administration and support of production and non-production environments in accordance with agency IT policy and Guidelines.
Manages the support and maintenance of the CentOS and RedHat Enterprise Linux Operating System environments.
Manages and troubleshoots activities associated with systems maintenance tasks such as system backups, recovery and file system maintenance.
Manages and troubleshoots activities associated with activation, installation and testing of software upgrades and computer components.
Manages and troubleshoots activities associated with maintenance of accounts, passwords, keys, certificates, certificate authorities, and truststores.
Manages System Accreditation/Reaccreditation activities and maintenance of associated corporate tools
Provides technical guidance to team of Systems Administrators on complex problems and/or issues.
Maintains documentation of IT infrastructure and troubleshooting procedures.
Assists in the creation, triage, assignment, and maintenance of systems administration related tickets.
Requirements:
Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance with polygraph is required.
Bachelor's degree in a technical discipline from an accredited college or university is required and 15 years of experience. Five (5) years of additional SA experience may be substituted for a bachelor's degree.
Preferred skills: Linux, Vmware, kvm virtualization, Storage arrays (NetApp), Ansible, Docker/Kubernetes, GitLab, DNS, NTP
Peterson Technologies provides for an excellent benefit package to include generous PTO, healthcare, STD, LTD, Life Insurance, 401k contribution and Tuition and Training reimbursement.
Salary range = $168,000 - $250,000, depending on experience.
Peterson Technologies will provide reasonable accommodations to applicants who are unable to utilize our online application system due to a disability.
Please send your request to HR at [email protected] or call.

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