Linux System Administrator Jobs
Linux System Administrator jobs are open across government agencies, financial services, healthcare, education, and managed service providers, from entry-level support roles to senior and principal positions, with specializations in cloud infrastructure, network security, and high-availability systems. Find a role that fits from the openings below and apply directly.
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Showing 4 of 76+ Linux System Administrator jobs
Location: Huntsville, Alabama (100% Onsite)
Clearance Required: Active Top Secret Clearance (U.S. Citizenship Required)
Employment Type: Full-Time / Permanent
Education: Bachelor’s Degree (B.S.) in Computer Science, Information Systems, or related field
Experience: Minimum 8+ years of hands-on Linux system administration and cloud operations experience
Job description:
We are seeking an experienced Senior Linux System Administrator with proven expertise in AWS cloud environments to support mission-critical systems within a classified defense program.
This position is fully onsite in Huntsville, AL, supporting a federal intel agency
The ideal candidate has deep experience managing Red Hat Enterprise Linux (RHEL) or similar distributions, implementing automation and infrastructure-as-code solutions, and maintaining high-availability, secure cloud environments in compliance with DoD security standards.
Key Responsibilities
Administer and maintain Linux servers (RHEL, CentOS, Ubuntu) in classified and unclassified environments.
Design, implement, and maintain AWS infrastructure (VPC, EC2, S3, CloudWatch, IAM, RDS, EFS).
Automate provisioning, configuration, and deployment tasks using Ansible, Terraform, or CloudFormation.
Monitor system performance, conduct root-cause analysis, and implement performance tuning.
Patch and harden Linux systems to meet DISA STIG and RMF compliance requirements.
Manage user accounts, permissions, and security policies in accordance with DoD standards.
Support and integrate CI/CD pipelines and DevSecOps practices.
Collaborate with cybersecurity teams to ensure continuous monitoring and incident response.
Participate in Agile/Scrum sprints, providing infrastructure support to development and QA teams.
Required Skills and Qualifications
Bachelor’s degree in Computer Science, Information Systems, Engineering, or related field.
8+ years of hands-on Linux system administration experience (RHEL, CentOS, Ubuntu).
Proven experience managing cloud infrastructure in AWS (VPC, EC2, EBS, S3, IAM, CloudFormation, CloudWatch).
Proficiency in troubleshooting networking concepts (TCP/IP, DNS, firewalls, load balancers).
Familiarity with CI/CD tools (Jenkins, GitLab CI/CD, AWS CodePipeline).
Working knowledge of security hardening (STIGs, CIS benchmarks) and RMF controls.
Excellent problem-solving, documentation, and communication skills.
Desired Certifications such as:
Familiarity with container technologies (Docker, Kubernetes, ECS/EKS).
Experience with AWS GovCloud or classified AWS regions.
AWS Certified SysOps Administrator or Solutions Architect
Red Hat Certified Engineer (RHCE)
Security+, CISSP, or equivalent DoD 8570 certification.
Exposure to monitoring tools (Splunk, Prometheus, Grafana, Nagios).
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Who's Hiring
Top Industries Hiring
- Science & Research
- Consulting & Professional Services
What Employers Look For
The qualifications that appear most often in linux system administrator jobs.
- Proficiency with Linux distributions such as RHEL, Ubuntu, CentOS, or Debian
- Experience with scripting languages including Bash, Python, or Perl for automation
- Familiarity with configuration management tools such as Ansible, Puppet, or Chef
- Knowledge of networking fundamentals including TCP/IP, DNS, DHCP, and firewalls
- Red Hat Certified System Administrator (RHCSA) or equivalent certification preferred
- Bachelor's degree in computer science, information technology, or a related field
Tips for Your Linux System Administrator Job Search
Tailor your resume to the environment
Hiring managers distinguish between bare-metal, virtualized, and cloud-native Linux shops. Call out the specific distributions you've administered, RHEL, Ubuntu, Debian, or CentOS, and match them to the stack listed in each job posting before you apply.
Certify before targeting enterprise roles
RHCSA and RHCE credentials are gatekeepers at many federal agencies and large enterprises. If you're applying to those environments without a current Red Hat certification, your application may be filtered out before a human reviews it.
Apply early to roles that fit
Migrate Mate lists linux system administrator openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Prove automation skills with real examples
Listing Ansible, Puppet, or Bash scripting on your resume isn't enough. Describe a specific task you automated, what it replaced, and the outcome. Interviewers for senior roles almost always ask for a concrete example during the technical screen.
Prepare for the technical interview format
Most linux system administrator interviews include a live troubleshooting scenario, a broken service, a full disk, or a failed boot. Practice walking through your diagnostic process out loud, because interviewers score your methodology as much as your answer.
Negotiate scope before you negotiate salary
Once you receive an offer, clarify the on-call rotation, change-window schedule, and number of systems you'll own. These details affect your workload significantly and give you concrete grounds for negotiating title or compensation if the scope is larger than the posting suggested.
Linux System Administrator Jobs: Frequently Asked Questions
Which companies are hiring the most linux system administrators?
The companies hiring the most linux system administrators right now include Akina, Leidos, and MANTECH, with the largest share of openings in Maryland, Virginia, and Texas, based on current listings on Migrate Mate as of November 2026. Federal contractors and managed service providers consistently account for a large portion of active postings.
How many linux system administrator jobs are remote?
About 14% of linux system administrator openings are fully remote or hybrid as of November 2026, though on-site requirements are more common for roles involving classified systems or physical data center access. Cloud infrastructure and DevOps-adjacent linux roles tend to offer the highest share of remote-friendly positions.
How do you become a linux system administrator?
Start by building hands-on experience with a Linux distribution at home or through a lab environment, then pursue a recognized certification such as the RHCSA to validate foundational skills. Entry-level help desk or IT support roles give you a foot in the door, and from there you can move into junior sysadmin positions by demonstrating scripting ability and comfort with system troubleshooting. Consistent exposure to networking, storage, and automation tools accelerates the path to a full sysadmin role.
Can you get a linux system administrator job with little experience?
Yes, entry-level linux system administrator roles exist, but you'll need to offset limited work history with demonstrable skills. Building a home lab, contributing to open-source projects, earning an RHCSA or CompTIA Linux+ certification, and documenting real troubleshooting scenarios in a portfolio all signal practical competence to hiring managers evaluating candidates without years of professional experience.
What does the linux system administrator interview process look like?
Most processes start with a recruiter screen focused on your background and environment preferences, followed by a technical interview that includes live troubleshooting exercises or scenario-based questions about system failures, permissions issues, and performance problems. A final round with a hiring manager or team lead typically covers team fit, on-call expectations, and how you handle change management. Some employers also assign a take-home lab exercise.
Where can I find and apply to linux system administrator jobs?
You can find and apply to linux system administrator jobs on Migrate Mate, which lists current openings from across the United States. Search the listings to find roles that match your experience and specialization, then apply directly to each one that fits.
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