Linux / Unix Systems Administrator Jobs in Chicago, IL

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Senior IT Systems Administrator

Pegasus Knowledge Solutions

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Skokie, Illinois, USA

Contract

Our client is seeking a Senior IT Systems Administrator / Site Operations Engineer to serve as the primary technical presence supporting high-performance computing (HPC) infrastructure at Skokie location in IL facility. This individual will play a hands-on role in the setup, maintenance, and ongoing support of a new HPC environment leveraging Lenovo hardware, Infiniband networking, and Linux-based systems.The ideal candidate brings strong Linux system administration experience in enterprise or H
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Posted 25 days ago | Updated 10 days ago

Unix/Linux Administrator

Parsons Services Company

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Remote

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: This job opening is for an experienced Unix/Linux Administrator to provide systems a
Posted 60+ days ago | Updated 9 hours ago

Linux and Windows Systems Administrator | REMOTE (ship required)

Oracle Corporation

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Remote

Full-time

Job Description Building off our Cloud momentum, Oracle has formed a new organization - Oracle Health & Analytics. This team will focus on product development, operations and product strategy for Oracle Health, while building out a complete platform supporting modernized, automated healthcare. This is a net new line of business, constructed with an entrepreneurial spirit that promotes an energetic and creative environment. We are unencumbered and will need your contribution to make it a world c
Posted 3 days ago | Updated 9 hours ago

Systems Administrator Senior

Northwestern University

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Evanston, Illinois, USA

Full-time

Department: MCC Information Technology Salary/Grade: ITS/81 Job Summary: Completes efforts and projects related to the design, installation, operation, support, upgrades and maintenance of infrastructure, including software, servers, networking and storage. Administers, maintains and supports complex and critical infrastructure. Provides user support for server hosting requests, problem resolution, system changes and upgrades. Analyzes infrastructure performance and resolves problems or makes ap
Posted 48 days ago | Updated 9 hours ago

Operating Systems Specialist- Unix, Windows, & Tomcat (Night/Graveyard Shift)

Ignitec Inc.

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Remote

Contract

Operating Systems Specialist This is a Full-Time (Contract) Remote position supporting United States Postal. Full benefits, PTO, and paid holidays is inclusive to this position. Number of Available Positions: 17 Contract Term: 10/1/2025- 9/30/2026 (With possible extensions) Salary Target: $80K-$125K/YR (Salary is flexible based on the relevant years of professional experience and background related to the position) Requirements: Ability to work Night/Graveyard Shift; Prior experience in supporti
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Posted 20 hours ago

Senior Linux Systems Administrator - REMOTE

First American Financial Corporation

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Remote or Santa Ana, California, USA

Full-time

Who We Are Join a team that puts its People First! Since 1889, First American (NYSE: FAF) has held an unwavering belief in its people. They are passionate about what they do, and we are equally passionate about fostering an environment where all feel welcome, supported, and empowered to be innovative and reach their full potential. Our inclusive, people-first culture has earned our company numerous accolades, including being named to the Fortune 100 Best Companies to Work For list for ten conse
Posted 6 days ago | Updated 9 hours ago

Senior Systems Administrator (Linux/Windows)

GovCIO

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Remote

Full-time

Overview GovCIO is hiring for a Senior Systems Administrator (Linux and Windows) to provide on-going support for the administration of the core system applications and perform operational tasks such as monitoring system resources and perform routine maintenance tasks in support of 24x7 life cycle applications to include on-call support. Work location is in Washington, DC and will be a hybrid remote with periodic onsite customer work activities. Must be willing to work nights, have an active Sec
Posted 24 days ago | Updated 6 hours ago

Systems Administrator (Windows / Linux) / Hybrid: Highlands Ranch, CO

Lockheed Martin Corporation

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Remote or Highlands Ranch, Colorado, USA

Full-time

Job Description Lockheed Martin's Enterprise Business & Digital Transformation (EBDT) organization employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 people works with partners around the world to bring proven performance to our customers' toughest challenges. Headquartered in Bethesda, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries.
Posted 21 days ago | Updated 9 hours ago

Systems Administrator - Linux/Windows

GovCIO

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Remote

Full-time

Overview Provide on-going support for the administration of the core system applications and perform operational tasks such as monitoring system resources and perform routine maintenance tasks in support of 24x7 life cycle applications to include on-call support. Work location is hybrid with periodic customer site work activities. Must be willing to work nights, have a Security+ certification, and an active Top Secret clearance. Responsibilities Position Description: In this role you will: Pr
Posted 60+ days ago | Updated 6 hours ago

Oracle Linux Administrator

NuLeap

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Remote or US

Contract, Third Party

Job Summary Oracle Linux Administrator - Lead enterprise patch management and CVE remediation for Oracle Linux 7.9 and related systems. - Serve as primary escalation point for Oracle Linux support, handling Tier 1 & 2 issues and Oracle support cases. - Apply security patches, OS bug fixes, and ensure security compliance across environments. - Provide 24x7 production support for high-severity incidents and outages. - Perform root cause analysis and document all patching, changes, and updates.
Posted 5 days ago | Updated 3 days ago

Linux System Administrator, Senior

GovCIO

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Remote

Full-time

Overview GovCIO is hiring a Windows and Linux System Administrator (Senior) to support Veterans Affairs operational needs . The role requires AWS, Windows, and Linux administration experience, with strong database management skills, to maintain infrastructure and ensure system security and performance. This position is fully remote within the United States. Responsibilities Plan the transition of development and/or production environments to new technologies. Ensure data integrity and facilit
Posted 8 days ago | Updated 6 hours ago

Windows / Linux Systems Administrator - REMOTE (ship required)

Oracle Corporation

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Remote

Full-time

Job Description Building off our Cloud momentum, Oracle has formed a new organization - Oracle Health Applications & Infrastructure. This team will focus on product development and product strategy for Oracle Health, while building out a complete platform supporting modernized, automated healthcare. This is a net new line of business, constructed with an entrepreneurial spirit that promotes an energetic and creative environment. We are unencumbered and will need your contribution to make it a w
Posted 60+ days ago | Updated 9 hours ago

Data Engineer (multiple openings) - IHM

DISCOVER

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Riverwoods, Illinois, USA

Full-time

Discover. A brighter future. With us, you'll do meaningful work from Day 1. Our collaborative culture is built on three core behaviors: We Play to Win, We Get Better Every Day & We Succeed Together. And we mean it - we want you to grow and make a difference at one of the world's leading digital banking and payments companies. We value what makes you unique so that you have an opportunity to shine. Come build your future, while being the reason millions of people find a brighter financial future
Posted 44 days ago | Updated 9 hours ago

Linux Systems Engineer

General Dynamics

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Remote

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: None Public Trust/Other Required: NACI (T1) Job Family: Systems Engineering Job Qualifications: Skills: Linux, Red Hat Ansible, Red Hat Enterprise Linux (RHEL), System Administration, Troubleshooting Certifications: None Experience: 2 + years of related experience ship Required: No Job Description: Linux Systems Engineer At GDIT, people are our differentiator. We are seeking
Posted 3 days ago | Updated 9 hours ago

Linux System Administrator

Sun Technologies,Inc.

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Remote

Contract

Job Title: Linux System Administrator Duration: up to 12 months contract (with the possibility of extension) Location: Fort Worth, TX 76108 Pay Rate: $60/hr - $70/hr on W2 [the pay rate may differ depending on your skills, education, experience, and other qualifications] Featured Benefits: Medical Insurance in compliance with the ACA401(k)Sick leave in compliance with applicable state, federal, and local laws Skills Required: The Linux Systems Administrator will be a member of the Enterprise IT
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Posted 60+ days ago | Updated 2 days ago

HPC Infrastructure Engineer

Pegasus Knowledge Solutions

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Skokie, Illinois, USA

Contract

The Senior HPC Infrastructure Engineer will support the design, implementation, optimization, and ongoing management of our High-Performance Computing (HPC) infrastructure. The role blends technical proficiency in system architecture design, Linux - based HPC clusters, high-speed interconnects, and HPC storage solutions, alongside day-to-day system administration. You will collaborate with cross-functional teams, including HPC Operations Engineers, researchers, and IT staff to ensure reliable, s
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Posted 26 days ago | Updated 10 days ago

MFG Systems Administrator - 3rd Shift (Remote)

Perdue Farms, Inc.

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Remote or Salisbury, Maryland, USA

Full-time

Perdue Foods has a goal of becoming the most trusted name in premium proteins by creating products for consumers and for retail and foodservice customers around the globe while changing the way animals are raised for food. It is part of Perdue Farms, a fourth-generation, family-owned food and agricultural business deeply rooted in tradition yet with a forward-thinking mindset. We believe that success starts with our people, and our culture is built on a foundation of teamwork, integrity, and res
Posted 24 days ago | Updated 6 hours ago

Application Production Support - Trading

Innova Solutions, Inc

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Chicago, Illinois, USA

Contract

Innova Solutions has a client that is immediately hiring for an < Application Production Support - Trading> Position type: Contract role Duration: 12+ months Location: Chicago, IL As an Application Production Support - Trading, you will: Position Summary Fixed Income Rates Trading Application Support Analyst Shifts: Rotational 7:00 AM to 4:00 PM / 9:30 AM to 6:30 PM Weekend Support: Required (part of rotation) Experience Level: 2 5 years Interview Process: 2 rounds (Tech Lead + Team Panel) Key R
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Posted 53 days ago | Updated 3 days ago

Systems Administrator II

Sierra Nevada Corporation

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Remote or Southern Pines, North Carolina, USA

Full-time

Do you have an eye for detail and a passion for developing innovation solutions? Join our team! As a Systems Administrator II, you will be using your skills and expertise to assist in the analysis, development, and configuration of our existing software and systems that address business requirements and processes. You'll be responsible for evaluating the interface between hardware and software, operational requirements, and characteristics of our systems, establishing and documenting system para
Posted 51 days ago | Updated 9 hours ago

Trade Desk Support

Request Technology, LLC

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Chicago, Illinois, USA

Full-time

Trade Desk Support Salary: Starting at $90k Location: Chicago, IL Hybrid: 2-3 days onsite/week *This role is open to sponsorship candidates* Qualifications Previous experience in the trading industryStrong working knowledge of UNIX environment/Unix commandsLinux desktop support experienceBasic database knowledge (MySQL)Strong scripting knowledge - Python/Bash Preferred Experience using Jira as a ticket/work request systemExperience using Grafana/InfluxDB/IcingaNetwork troubleshooting and analy
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Posted 60+ days ago | Updated 2 days ago