8-10 years of experience as a Linux Systems Administrator (virtual and physical). Experience needed in a variety of Linux versions, platforms, etc. Strong background with Windows Systems Administration needed - 5 years. Experience with Ansible for patching. VMWare and Active Directory. Experience with Privileged Access Management (PAM) and Identity Security solutions. No 3 rd Party candidates, vendor emails or call.

About Unison: Unison’s products power the business of government to work smoother and smarter, making critical federal processes and acquisitions simpler and more effective. Trusted by over 200,000 federal employees and government contractors, our AI-infused software and deep domain expertise help contract shops, cost engineers, 1102s, program managers, and budgeting professionals cut through friction, keep compliance airtight, and sharpen decisions. Our federal focus brings efficiency, transpa…

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Backup and Recovery, Linux, Red Hat Ansible Certifications: CompTIA Security CE | CompTIA - CompTIA Experience: 10 years of related experience US Citizenship Required: Yes Job Description: SYSTEMS ADMINISTRATOR SME Advance how our…

Senor Network and Computer Systems Administrator At B&A, we foster and embrace a distinct set of values that we live by and instill in all aspects of our organization: dedication, commitment, partnership, trust, and recognition. We have incorporated these values into successful delivery for our customers since 1988. B&A believes in ensuring its employees feel deeply connected to B&A, recognizing successes and hard work, and providing continuous opportunities to learn and grow. Our people are en…

ManTech International seeks a Linux Systems Engineer to support mission-critical Defense & Aerospace programs within our IT & Data Management team. In this role, you will design, secure, and maintain Linux-based infrastructures that power sensitive national security missions. Responsibilities include system hardening, automation, monitoring, and troubleshooting in classified and unclassified environments. You will collaborate with cyber, data, and engineering teams, leveraging ManTech’s mission…

Zachary Piper Solutions is seeking a Linux & Windows Systems Administrator to support the Research, Development, Test, and Evaluation (RDT&E) network and secure enclaves for NIWC PAC in San Diego, California. This role involves securing and maintaining both Windows and Linux systems, supporting infrastructure design, and ensuring compliance with DoD cybersecurity standards. Key Responsibilities: - Administer and maintain Windows, Linux, and VMware systems - Perform system hardening in accordanc…

Required (*Need to have 1 of these qualifications*): •Linux system administration (Centos7, RedHat8)•Docker•Python scripting•AWS, C2S, or other cloud experience•GitLab Pipeline•Ansible Pipeline•NiFi Desired:•Elasticsearch•Cloud hosting and automation

Job Description *This position is onsite at our office in Tysons, VA with a varied shift schedule (days/evenings) and travel up to 25% of the time. Your schedule will be 4/10-hour days per week. We are looking for a NOC Systems Administrator who thrives in a culture of autonomy and high-impact problem solving. You won’t just be "watching screens" you will be the first line of defense for our infrastructure, supporting our 24/7 Network Operations Center (NOC) If you are looking for a team with a…

Job Title: Senior Linux Platform Administrator Location: Arlington, VA (Hybrid – 2-3 Days Onsite per Week) Clearance: Active Secret Clearance Required (TS/SCI Preferred) Company: Quantum Science Solutions (QSS) Compensation: Open Rate ________________________________________ Position Overview Quantum Science Solutions (QSS) supports mission-critical federal cybersecurity programs that provide onsite incident response services to civilian Government agencies and critical infrastructure organizat…

Location: Annapolis Junction, MD Clearance Required: TS/SCI with Polygraph Telework: Based on tasking About the Role We’re seeking a highly experienced System Administrator with strong, quantifiable Linux system administration expertise. In this role, you’ll support a wide range of IT systems across multiple environments, working with modern automation tools, hyperconverged infrastructure, and container‑based technologies. You’ll join a mission‑focused team where your technical depth, troublesh…

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Lead Systems Engineering for complex packet-based hardware and software systems. • Focus on the full system lifecycle, including design, Integration and Test (I&T), deployment, and sustainment. • Direct end-to-end systems integration across hardware, software, and network components. • Develop and maintain scripts for workflow automation and Linux systems administration. • Provide techn…

System Engineer Linux Program Description: We have a need for a TS/SCI Level 2 (experienced professional, 1 years of experience, 2 desired) Full Stack Infrastructure Engineer to work out of our King of Prussia location (on-site full-time). This would be for our Sustainment program, which will not only be maintaining the system but developing and implementing hardware, platform, and software upgrades for the next few years, at a minimum. Day to Day Responsibilities: this person will be maintaini…

CCS is in search of a Senior Linux Software Developer/System Administrator to fill a System Architects role for PFPA’s atmospheric modeling system. The system provides hazard prediction for the Pentagon Reservation, DoD activities, and DoD occupied facilities within the NCR. The needed services will support existing Transport and Dispersion (T&D) modeling for the Pentagon in Arlington, VA as well as the National Capitol Region. The System Architect shall respond to user/system reported errors a…

Linux Administrator Program Description: Our client is looking for a Senior level Linux System Administrator to join their team. Day to Day Responsibilities: The System Administrator will be responsible for the health and maintenance of the Linux servers. They will be on a team of 13/14. The Senior System Administrator should have strong experience with Linux and VMware. They should also have experience with automation using scripting. Required Skills: Linux (CentOS/RHEL) VMWare VM creation, co…

SimVentions, Inc. seeks a System Administrator to support Defense & Aerospace IT and cybersecurity missions. You will install, configure, and secure Windows/Linux servers, networks, and virtualized environments; manage user accounts, storage, and backups; and apply patches, STIGs, and cybersecurity controls to meet DoD requirements. Collaborate with engineers and cybersecurity analysts to troubleshoot complex issues, harden systems, and maintain high availability for mission-critical environmen…

Job Title: Cloud and Infrastructure Systems Administrator - Linux admin Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None Anticipated Posting End: 8/24/2026 The Opportunity: We are seeking a highly skilled and experienced Linux admin to work with our dynamic team of IT professionals. The ideal candidate will have experience with cloud environments, a…

The Linux Systems Administrator is responsible for the installation, configuration, maintenance, and support of Linux-based systems and related infrastructure. This role ensures system reliability, security, and performance while supporting modern DevOps practices, including containerization, automation, and CI/CD pipelines. The ideal candidate has strong technical aptitude, is self-driven, and can independently research and resolve complex issues while effectively communicating with cross-func…

If you are interested in this opportunity. Please forward a copy of your updated resume in word format to Responsibilities: • Serve as a Linux Systems Administrator overseeing Red Hat Enterprise Linux (RHEL) environments across development, lab, and production systems. • Perform large scale configuration management and deployment across Windows, MacOS, Linux/Unix, and other operating systems and virtual environments to support the TEN infrastructures. • Supporting the implementation of new tech…

Mid-Level Linux Systems Engineer (Enterprise Infrastructure) Location: Huntsville, AL (100% On-Site) Clearance: Active Top Secret required Overview We are seeking a Mid-Level Linux Systems Engineer to support enterprise infrastructure operations within a secure, mission-driven federal environment. This role focuses on administering, maintaining, and optimizing Linux-based systems that support critical applications and data environments. The ideal candidate brings strong hands-on experience with…

Location: Chicago, IL Salary: $60.00 USD Hourly - $70.00 USD Hourly Description: Hi , Hope you are doing well! This is Prashant from Judge Group. I was just trying to reach you for an opportunity we have for Linux Systems Administrator - Chicago, IL Hybrid So just wondering if you are looking for any new opportunity. We are seeking an experienced Linux Systems Administrator to provide services to our IT team. In this contract role, you will be responsible for the deployment, maintenance, securi…