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Sr. Unix System Administrator Jobs (NOW HIRING)

Xinnovit

UNIX System Admin(XIN001_JBJH)

Boulder, CO

Unix/Linux/Solaris/-Senior System Administrator Operator for Disaster Recovery services contract. Good to also have SAN skills as well. XIV /EMC Additional Information All your information will be ...

Cymertek

Linux / Unix Systems Administrator

Aurora, CO · On-site

Linux / Unix Systems Administrator LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please ... You will collaborate with cross-functional teams to support system upgrades, implement security ...

ESM

Senior Unix/Linux Administrator

Dayton, OH · On-site

$110K - $120K/yr

We are hiring a Senior Unix/Linux Administrator for an exciting remote opportunity. and ... Provide and administer UNIX and Linux NIPRnet and SIPRnet Operating Systems to ensure effective day ...

Cymertek

Linux / Unix Systems Administrator

Reston, VA · On-site

Linux / Unix Systems Administrator LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please ... You will collaborate with cross-functional teams to support system upgrades, implement security ...

ESM

Senior Unix/Linux Administrator

Dayton, OH

We are hiring a Senior Unix/Linux Administrator for an exciting remote opportunity. and ... Provide and administer UNIX and Linux NIPRnet and SIPRnet Operating Systems to ensure effective day ...

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Sr Unix System Administrator information

What are some common challenges faced by Sr. Unix System Administrators in maintaining large-scale enterprise environments?

Sr. Unix System Administrators often encounter challenges such as managing complex system architectures, ensuring high availability, and minimizing downtime during critical updates or migrations. Balancing security with user accessibility, staying current with rapidly evolving technologies, and responding to incidents promptly are also key responsibilities. Collaboration with development, network, and security teams is essential to troubleshoot multifaceted issues and implement robust, scalable solutions.

What does a Sr. Unix System Administrator do?

A Sr. Unix System Administrator is responsible for managing and maintaining Unix-based servers and systems within an organization. Their duties include installing, configuring, and upgrading Unix operating systems, monitoring system performance, ensuring security, and troubleshooting issues. They also perform backups, manage user accounts, automate routine tasks using scripting, and provide technical support to other IT staff. Senior administrators often mentor junior team members and help design system architecture to ensure reliability and scalability.

What are the key skills and qualifications needed to thrive as a Sr. Unix System Administrator, and why are they important?

To thrive as a Sr. Unix System Administrator, you need deep expertise in Unix/Linux operating systems, scripting, troubleshooting, and a strong background in IT infrastructure, often supported by a bachelor’s degree and relevant experience. Familiarity with configuration management tools (like Ansible or Puppet), virtualization platforms, shell scripting, and certifications such as RHCE or CompTIA Linux+ are typically required. Exceptional problem-solving, communication, and teamwork skills help you effectively manage complex environments and collaborate with cross-functional teams. These skills are crucial for ensuring system reliability, security, and optimal performance in mission-critical enterprise settings.

What is the difference between Sr. Unix System Administrator vs Linux Systems Engineer?

AspectSr. Unix System AdministratorLinux Systems Engineer
CertificationsUnix/Linux certifications (e.g., LPIC, RHCE)Linux certifications (e.g., RHCE, CompTIA Linux+)
Work EnvironmentUnix-based servers, enterprise data centersLinux servers, cloud environments
Industry UsageFinancial, healthcare, governmentTech companies, startups, cloud providers
Job FocusMaintaining Unix systems, troubleshooting, scriptingDesigning, deploying, optimizing Linux infrastructure

The main difference is that Sr. Unix System Administrators focus on managing and maintaining Unix-based systems in enterprise environments, while Linux Systems Engineers are more involved in designing and deploying Linux infrastructure, often in cloud or development settings. Both roles require similar certifications and technical skills but differ in scope and application.

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What job categories do people searching Sr. Unix System Administrator jobs look for? The top searched job categories for Sr. Unix System Administrator jobs are:
Sr Unix System Administrator jobs near you
Infographic showing various Sr. Unix System Administrator job openings in the United States as of May 2026, with employment types broken down into 3% Internship, 20% As Needed, 13% Full Time, 13% Part Time, 9% Temporary, and 42% Contract. Highlights an 87% Physical, 6% Hybrid, and 7% Remote job distribution.

UNIX Systems Administrator

Connective Business Solution

Tallahassee, FL • On-site

Full-time

Posted 16 days ago

Job description

General Characteristics
Installs, configures, maintains and performs system integration testing of UNIX based operating systems, related utilities and hardware. Responsible for troubleshooting UNIX-based hardware and software problems. Monitors systems activities and fine tunes system parameters and configuration to optimize performance and ensure security of systems. Performs capacity analysis, monitors and controls usage of disk space. Develops procedures for routine administration including backup/restore, shutdown, and startup. Provides recommendations for improving the server environment, such as capacity thresholds, security gaps, patch levels and hardware recalls.
Education: Bachelor's Degree in Computer Science, Information Systems, or other related field. Or equivalent work experience.
Experience: A minimum of 3 years of IT work experience. Requires a high level of expertise in multiple system environments with emphasis in UNIX-based systems.
Complexity: Intermediate professional level role. Defines procedures for monitoring and evaluates, diagnoses and establishes work plan to resolve system issues. Performs troubleshooting for complex hardware, software and network problems. Works on multiple projects as a project team member, occasionally as a project leader. May coach more junior technical staff.
*Please note that this application is part of our candidate pool for future staffing needs under our contract with the State of Florida. Positions may not be available immediately, and job locations, assignments, and start dates may vary depending on agency requirements. By applying, you will be considered for current and upcoming opportunities, and we will reach out if a role that matches your skills and qualifications becomes available.*

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