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Sr. Unix System Administrator Jobs (NOW HIRING)

Sr. Unix Administrator FedTec is seeking a Senior Unix Administrator to support mission-critical ... This role is responsible for managing and maintaining Solaris and Red Hat Linux systems, ensuring ...

CGI Federal is looking for a UNIX system engineer to help support a program we are working on for ... Administrator or IT Engineer with experience in automating assigned tasks. f) Three or more years ...

The Unix System Administrator's role is to operate and tune Unix/Linux systems, servers, and related components to ensure high levels of availability and security of the supported business ...

• Expert in Unix: Linux desired •  Enterprise fortune 200-500 background environment exp ... System Admin background = front of the line, but not required, i.e., BMO, Chase, BOA, etc...or ...

Individuals are systems administrators that normally operate independently with little to no ... These individuals assist more senior staff members in the training and development of more junior ...

Review security, network, and system auditing and remedy identified anomalies * Analyze and resolve problems associated with UNIX server hardware, operating systems, applications software while ...

FedTec is looking for a Sr. Unix Administrator who would play a pivotal role in all security ... Qualifications: * 4+ years of systems administration experience on UNIX operating systems Linux ...

Review security, network, and system auditing and remedy identified anomalies * Analyze and resolve problems associated with UNIX server hardware, operating systems, applications software while ...

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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.

More about Sr Unix System Administrator jobs
Infographic showing various Sr. Unix System Administrator job openings in the United States as of July 2026, with employment types broken down into 1% As Needed, 85% Full Time, 11% Part Time, 1% Temporary, and 2% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution.

Unix System Administrator - 3026

Right Talent Right Now

Collierville, TN

Full-time

Re-posted 13 days ago


Job description

Job Description

Job Ref.: 3026

Job Title: Unix System Administrator

Role: Information Technology

Relocation Available: Yes

Industry: I.T.

Location: Tennessee

Town / City: Collierville

Job Type: Permanent full-time

Job description:


SUMMARY: Performs installation, configuration and maintenance of the UNIX (Linux) operating systems and related software products in a manner consistent with our existing service level agreements. Responsible for maintaining the integrity and security of enterprise's UNIX (Linux) servers and systems which support the various operating units of the enterprise. Ensures performance monitoring and tuning of overall systems. Is expected to conduct system analysis and development, with limited support and direction from professional staff, to keep our systems current with changing technologies. Must primarily perform work requiring advanced learning or work that is original and creative. Also, must consistently exercise independent choice and judgment or perform work requiring invention, imagination or talent in a recognized field of artistic endeavor 50% or more of the time.

ESSENTIAL DUTIES AND RESPONSIBILITIES include the following:

Works with the application teams and other IT department personnel to coordinate system software changes and support application changes.

Understands the critical processing cycles in detail such as accounting month-end, invoicing and billing, and any other relevant processing cycles.

Maintains DNS, NFS, DHCP, printing, mail, web, and FTP services for the enterprise.

Responsible for maintaining the integrity and security of the enterprise UNIX (Linux) servers and systems.

Analyzes production and test system problems, determines causes, and takes timely corrective actions.

Oversees the administration of the UNIX (Linux) operating system. Recommends systems and programming standards and procedures including writing shell scripts or programs to automate and/or simplify the UNIX administration procedures.

Recommends and implements security policies and standards and ensures adherence to procedures.

Keeps accurate records of UNIX AIX (Linux) system failures and changes.

Manages UNIX account maintenance including additions, changes, and removals.

Research and recommends updates to software and hardware of UNIX (Linux) systems including upgrades to operation system and communicates to IT Management Group.

Performs tape storage management and administration using Tivoli Storage Manager.

Conducts preliminary studies for new projects related to machine utilization, capacity planning, and network topology.

Establishes and maintains contact with key vendors for maintenance and services.

Monitors system performance and develops recommendations for correction or improvement. Implements changes as appropriate with proper approval.

Recognizes, identifies, and documents potential areas where existing policies and procedures require change, or where new ones need to be developed, especially regarding future business expansion.

Maintains a disaster recovery plan. Creates backup capabilities adequate for the recovery of data and understands concepts and processes of replication for disaster recovery.

EDUCATION and/or EXPERIENCE: 

Bachelor's degree in an IT related field from an accredited four-year college or university and five years' experience in a large-scale systems environment with at least four years UNIX (AIX, Linux, or Solaris) systems administration and two years in PC networking. Requires thorough systems knowledge and experience relative to systems administration.

SKILLS & ABILITIES:

Working knowledge of Windows 7 or higher, Microsoft Office 2013 or higher, Symantec anti-virus, and Ethernet.

Knowledge of TCP/IP, FTP, DNS, NIS, and Point to Point Protocol (PPP).

Knowledge of LPARs.

Good communication skills.

Good problem solving skills.

Ability to work both independently and as a team member.

Good customer service skills.

Ability to set priorities and work on multiple tasks.

Experience with Oracle database and/or applications a plus.

Bottom Line Requirements:


1. Bachelor's degree in an IT related field.

2. 5+ years' experience in a large-scale systems environment with at least 4 years UNIX (AIX, Linux, or Solaris) systems administration and two years in PC networking. 

3. Working knowledge of Windows 7 or higher, Microsoft Office 2013 or higher, Symantec anti-virus, and Ethernet.

4. Knowledge of TCP/IP, FTP, DNS, NIS, and Point to Point Protocol (PPP).

5. Knowledge of LPARs.


Additional Information

All your information will be kept confidential according to EEO guidelines.