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Sr System Admin Jobs (NOW HIRING)

HARRIS & HARRIS LTD

Sr. System Administrator

Chicago, IL · On-site

$100K - $120K/yr

We're looking for friendly, professional, and motivated Sr. Systems Administrator to join our ... Minimum of three years' experience in a Systems Admin role encompassing the following: * Experience ...

Boeing

Senior System Administrator

Seal Beach, CA · On-site

$146K - $197K/yr

Senior System Administrator Company: The Boeing Company Boeing Defense, Space & Security (BDS), Space Mission Systems Organization seeks an Senior System Administrator to support Proprietary Programs ...

Boeing

Senior System Administrator

Seal Beach, CA · On-site

$146K - $197K/yr

Senior System Administrator Company: The Boeing Company Boeing Defense, Space & Security (BDS), Space Mission Systems Organization seeks an Senior System Administrator to support Proprietary Programs ...

Foxconn Assembly LLC

Senior System Administrator

Houston, TX · On-site

$82K - $111K/yr

The Senior System Administrator is responsible for designing, optimizing, and securing the ... Due to unrestricted privileged access (Domain Admin / Root) to critical intellectual property and ...

Resource Label Group

Senior System Administrator

Franklin, TN · On-site

$82K - $112K/yr

The Senior Systems Administrator is a key member of that team. This role owns the infrastructure reliability of an assigned portfolio of plant sites, serves as the senior technical resource for ...

New

Belay Technologies

Senior System Administrator

Laurel, MD · On-site

$164K - $200K/yr

Belay Technologies is seeking a Senior System Administrator to join our intel team. You will support CNO Capabilities as a senior System Administrator and technical contributor responsible for ...

Boeing

Senior System Administrator

Seal Beach, CA · On-site

$146K - $197K/yr

Senior System Administrator Company: The Boeing Company Boeing Defense, Space & Security (BDS), Space Mission Systems Organization seeks an Senior System Administrator to support Proprietary Programs ...

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Sr System Admin information

See salary details

$49K

$102.2K

$143.5K

How much do sr system admin jobs pay per year?

As of Aug 13, 2026, the average yearly pay for sr system admin 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 manages and maintains an organization’s IT infrastructure, including servers, networks, and security systems. They troubleshoot issues, implement updates, and ensure system reliability, often using tools like scripting and monitoring software. They typically have advanced certifications and oversee junior staff to ensure optimal system performance.

Do senior system administrators make good money?

Senior system administrators typically earn higher salaries due to their experience, technical skills, and certifications such as CompTIA or Cisco. Their compensation varies by industry and location but generally reflects their critical role in maintaining IT infrastructure and security.

What are the key skills and qualifications needed to thrive as a Sr System Admin?

To thrive as a Sr System Admin, you need advanced knowledge of operating systems, network infrastructure, security protocols, and typically a degree in computer science or related field. Proficiency with server virtualization tools, cloud platforms (like AWS or Azure), and certifications such as Microsoft Certified: Windows Server or CompTIA Server+ are highly valuable. Strong problem-solving skills, effective communication, and the ability to work independently or lead a team set exceptional candidates apart. These skills and qualifications are crucial to ensure reliable system performance, security, and efficient IT operations in complex enterprise environments.

What are some common challenges Sr System Admins face when managing complex IT infrastructures?

Sr System Admins often encounter challenges such as integrating legacy systems with modern technologies, maintaining high system uptime, and responding quickly to security threats. Balancing proactive maintenance with urgent troubleshooting can be demanding, especially in large, distributed environments. Effective communication and collaboration with network, security, and development teams is essential to ensure seamless operations and swift issue resolution. Staying current with evolving technologies and best practices is also key to successfully managing these challenges.

What is a Sr System Admin?

Sr System Admins, or Senior System Administrators, are IT professionals responsible for managing and maintaining an organization's computer systems, servers, and network infrastructure. They oversee system performance, troubleshoot issues, implement security measures, and ensure data integrity and availability. Sr System Admins often lead projects, mentor junior staff, and play a critical role in planning and executing IT strategies to support business operations.

Is a senior system administrator a high paying job?

A senior system administrator typically earns a higher salary compared to entry-level roles due to their experience and expertise in managing complex IT infrastructure, networks, and security systems. Salaries vary based on industry, location, and certifications such as CompTIA or Cisco, but generally, it is considered a well-paying position within the IT field.
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Sr System Admin jobs near you
Infographic showing various Sr System Admin 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

SITEC Consulting

Annapolis Junction, MD • On-site

$175K - $215K/yr

Full-time

Re-posted 11 days ago

Job description

SITEC is seeking a Senior Systems Administrator to support lifecycle sustainment activities for commercial and custom-developed education, learning, and training applications. This role will join an existing technical team responsible for maintaining secure, reliable, and high-performing IT systems across hybrid on-premises and cloud-based environments.The ideal candidate is a self-motivated Systems Administrator with strong Windows and Linux experience, hands-on patching and vulnerability remediation knowledge, and the ability to support mission-critical systems in a fast-paced DoD environment.ResponsibilitiesThe Senior Systems Administrator will provide operational support, maintenance, troubleshooting, patching, automation, and system administration across enterprise Windows, Linux, and cloud-hosted environments. This position will support system reliability, security compliance, infrastructure modernization, and lifecycle sustainment activities.Key DutiesAdminister and maintain Windows Server and Linux server environments.Perform IAVA patching, vulnerability remediation, and compliance reporting across enterprise systems.Provide troubleshooting, maintenance, and operational support for on-premises and cloud-hosted IT environments.Execute system patching, software maintenance, upgrades, hardening, and disk management.Implement and manage Windows Group Policy Objects and Active Directory-related administration.Develop automation scripts using PowerShell, Bash, Python, or related scripting languages.Support AWS cloud infrastructure using services such as EC2, Lambda, CloudFormation, and IAM.Assist with infrastructure as code initiatives using Ansible and Terraform.Develop and maintain system automation tools to improve reliability, efficiency, and uptime.Work collaboratively with technical teams in a fast-paced, mission-focused environment.Required QualificationsActive TS/SCI with Polygraph.15 years of Systems Administration experience supporting programs of similar scope, type, and complexity.Bachelor's degree in a technical discipline; 5 additional years of SA experience may be substituted in lieu of a degree.DoD 8570 compliance with IAT Level I.Experience maintaining Windows Server environments, including hardening, patching, upgrades, and disk management.Experience administering Linux servers, including patching and software maintenance.Experience with IAVA patching and reporting.Experience maintaining and upgrading installed software across enterprise systems.Strong troubleshooting and problem-solving skills across computer systems and software.Desired SkillsStrong hybrid Linux/Windows Systems Administration background.Hands-on experience with AWS services such as EC2, Lambda, CloudFormation, and IAM.Experience with automation and scripting tools including Ansible, Terraform, PowerShell, Bash, and Python.Experience with Active Directory and Group Policy Management.Understanding of cloud security practices, patch management, and compliance reporting.Ability to work independently and collaboratively in a fast-paced technical environment.About SITECSITEC is an employee- and customer-focused Information Technology and Professional Services firm specializing in cybersecurity, software and systems engineering, systems administration, and lifecycle support services. We design, develop, and deliver mission-focused technology solutions that support the continuous operation and modernization of critical customer platforms.
Job Posted by ApplicantPro