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Senior Linux System Engineer Jobs in Pasadena, MD

Astrion

Sr. Linux Systems Administrator

Columbia, MD · On-site

$145K - $165K/yr

... System Administrator (RHCSA)) * Experience with: * Offline and air-gapped patching (Red Hat ... Red Hat Certified Engineer (RHCE) or Red Hat Certified Architect (RHCA) * HPC experience with PBS ...

Astrion

Sr. Linux Systems Administrator

Columbia, MD · On-site

$145K - $165K/yr

... System Administrator (RHCSA)) * Experience with: * Offline and air-gapped patching (Red Hat ... Red Hat Certified Engineer (RHCE) or Red Hat Certified Architect (RHCA) * HPC experience with PBS ...

ManTech

Senior Linux System Administrator

Laurel, MD

$128K - $214K/yr

ManTech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure ...

MANTECH

Senior Linux System Administrator

Laurel, MD · On-site

ManTech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure ...

ManTech

Senior Linux System Administrator

Laurel, MD

$128K - $214K/yr

Demonstrated experience in planning and leading Systems Engineering efforts is required. * Must be proficient with troubleshooting in a Linux Red Hat environment. * Extensive experience with VMWare

MANTECH

Senior Linux System Administrator

Laurel, MD · On-site

ManTech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure ...

Vibrint

Senior Linux System Administrator (PKI)

Hanover, MD · On-site

$172K - $206K/yr

Join Vibrint, where your career is a priority, and your future is our shared goal._____The Senior Linux System Administrator supports the implementation, maintenance, and troubleshooting of mission ...

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Senior Linux System Engineer information

See Pasadena, MD salary details

$102K

$129.9K

$160.9K

How much do senior linux system engineer jobs pay per year?

As of Sep 6, 2026, the average yearly pay for senior linux system engineer in Pasadena, MD is $129,864.00, according to ZipRecruiter salary data. Most workers in this role earn between $119,800.00 and $140,100.00 per year, depending on experience, location, and employer.

What does a senior Linux system engineer do?

A Senior Linux System Engineer is responsible for designing, implementing, maintaining, and troubleshooting Linux-based systems and servers within an organization. They ensure the reliability, security, and optimal performance of these systems, often leading projects and mentoring junior engineers. Their tasks may include automation, scripting, system updates, monitoring, and responding to incidents. They also collaborate with other IT teams to support business needs and implement best practices for system administration.

What are the key skills and qualifications needed to thrive as a senior Linux system engineer?

To thrive as a Senior Linux System Engineer, you need deep expertise in Linux operating systems, scripting (such as Bash, Python, or Perl), system architecture, and a relevant degree or equivalent experience. Familiarity with configuration management tools (like Ansible or Puppet), virtualization platforms, cloud services, and certifications such as RHCE or LPIC are highly valued. Strong problem-solving, collaboration, and communication skills help you efficiently manage complex environments and mentor junior staff. These capabilities are crucial for ensuring system stability, security, and scalability in mission-critical IT infrastructures.

What are some common challenges a senior Linux system engineer faces when managing large-scale server environments?

Senior Linux System Engineers often encounter challenges related to maintaining system uptime, managing complex configurations, and ensuring security across a large number of servers. Troubleshooting issues in distributed environments, automating repetitive tasks, and keeping systems up-to-date with the latest patches are also frequent responsibilities. Collaboration with development, security, and networking teams is essential to resolve cross-functional issues and implement new solutions efficiently. Staying current with evolving technologies and best practices is key to overcoming these challenges and excelling in the role.

What is the difference between Senior Linux System Engineer vs Linux System Administrator?

AspectSenior Linux System EngineerLinux System Administrator
CertificationsLinux Professional Institute Certification (LPIC), RHCELPIC, RHCE often preferred
Work EnvironmentDesigning, implementing, and optimizing Linux infrastructureMaintaining and supporting existing Linux systems
ResponsibilitiesAdvanced troubleshooting, system architecture, scriptingSystem setup, user management, routine maintenance

The Senior Linux System Engineer typically focuses on designing and optimizing Linux environments, requiring advanced skills and certifications. In contrast, the Linux System Administrator handles daily maintenance and support tasks. Both roles often require similar certifications and work in similar environments, but their responsibilities differ in scope and complexity.

What are popular job titles related to Senior Linux System Engineer jobs in Pasadena, MD?

For Senior Linux System Engineer jobs in Pasadena, MD, the most frequently searched job titles are:

What cities near Pasadena, MD are hiring for Senior Linux System Engineer jobs?

Cities near Pasadena, MD with the most Senior Linux System Engineer job openings:

Senior Linux System Engineer jobs near you

Sr. Linux Systems Administrator

Astrion

Columbia, MD • On-site

$145K - $165K/yr

Full-time

Re-posted 3 days ago

Job description

Overview
Senior Linux Systems Administrator
LOCATION: Columbia, MD (Onsite)
JOB STATUS: Full-time
CLEARANCE: Active Top Secret / TS/SCI (Required)
TRAVEL: Less than 10%
SALARY RANGE: $145k - $165k
Astrion has an exciting opportunity for a highly experienced Senior Linux Systems Administrator to build, secure, and sustain the Linux server and workstation estate, the high-performance computing (HPC) cluster, and the enterprise storage that run across three or more isolated classified networks supporting Department of Defense/Department of War (DoD/DoW) environments in Columbia, MD. The ideal candidate brings deep Red Hat Enterprise Linux (RHEL) expertise, extensive experience operating inside closed and air-gapped classified enclaves, and a proven record of building and maintaining systems in compliance with Risk Management Framework (RMF), DoD STIG, and Comply-to-Connect (C2C) requirements. This position requires Monday through Friday on-site work at our facility in Columbia, MD.
REQUIRED QUALIFICATIONS / SKILLS
  • Active TS/SCI security clearance (required)
  • Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent experience)
  • 8+ years of Linux systems administration experience within DoD/DoW or classified environments
  • Deep expertise in:
    • RHEL administration (installation, patching, performance tuning, kernel and systemd, storage, and networking)
    • Scripting and automation (Bash, Python, Ansible)
    • Linux identity and authentication (LDAP/SSSD, Kerberos, FreeIPA or AD integration)
  • Demonstrated experience implementing and maintaining DoD STIG compliance on Linux
  • Hands-on experience administering an HPC cluster (workload scheduler such as PBS Professional or similar)
  • Experience administering enterprise storage (NetApp ONTAP, NFS)
  • Strong understanding of:
    • RMF (Risk Management Framework)
    • DISA security requirements and accreditation processes
    • DCSA accreditation standards
  • Active DoD 8140 (formerly DoD 8570) compliant baseline certification (e.g., Security+ CE, CISSP)
  • Active DoD 8140 compliant computing environment certification (e.g., minimum Red Hat Certified System Administrator (RHCSA))
  • Experience with:
    • Offline and air-gapped patching (Red Hat Satellite or internal repositories)
    • ACAS or Nessus and SCAP scanning
    • SIEM integration and log analysis
    • Continuous monitoring under RMF

KEY COMPETENCIES
  • Advanced Linux systems administration and troubleshooting
  • Security hardening and compliance enforcement
  • Automation and scripting
  • Strong analytical and problem-solving abilities
  • Excellent communication and documentation skills
  • Ability to operate in high-security, mission-critical environments

PREFERRED QUALIFICATIONS / SKILLS
  • Red Hat Certified Engineer (RHCE) or Red Hat Certified Architect (RHCA)
  • HPC experience with PBS Professional
  • NetApp Certified Data Administrator (NCDA)
  • Automation at scale (Ansible Automation Platform, Git-based configuration management)
  • Zero Trust architectures and containerization (Podman, Kubernetes) in classified environments
  • Prior experience supporting Cross Domain Solutions (CDS) programs
  • Experience with cloud-based DoD environments (e.g., Azure Government, Azure Secret)
  • Project management experience and experience briefing executive leadership

RESPONSIBILITIES
  • Administer, patch, and sustain RHEL servers and workstations across three or more isolated classified networks, each operated as its own authorization boundary
  • Build, harden, and baseline Linux systems to DoD Security Technical Implementation Guides (STIGs); remediate findings and control configuration drift
  • Administer and tune the HPC cluster, including compute nodes, the workload scheduler (e.g., PBS Professional), the shared or parallel filesystem, and the low-latency interconnect
  • Administer NetApp storage (ONTAP), including volumes, NFS and CIFS exports, snapshots, capacity planning, and backup and recovery
  • Automate provisioning, configuration, and remediation with Bash, Python, and Ansible, including on disconnected systems
  • Perform patching and updates on air-gapped networks through approved offline processes (e.g., Red Hat Satellite or internal repositories and trusted media transfer)
  • Administer Linux identity and access (LDAP/SSSD, Kerberos, FreeIPA or Active Directory integration, sudo, PAM), enforcing least privilege
  • Implement and maintain C2C and 802.1x posture for Linux endpoints and integrate with the security tool stack
  • Perform vulnerability remediation and continuous monitoring in accordance with RMF controls; run and interpret ACAS and SCAP scans and review audit logs
  • Support the Authority to Operate (ATO) process, including STIG checklists, POA&Ms, and risk assessments
  • Develop and maintain system documentation, diagrams, SOPs, and security artifacts
  • Troubleshoot complex issues across multi-network, multi-vendor environments
  • Collaborate with cybersecurity, network, systems engineering, and mission stakeholders to ensure secure, reliable operations
  • Support audits, inspections, and compliance validation activities

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