Jobs in the United States

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Added 10 mins ago
ETS Developer IV- Core Payments
Navy Federal Credit Union
Vienna, VA · Pensacola, FL
We are looking for an experienced Digital Engineer to provide technical leadership and direction across Digital, with a focus on security, technology strategy, architecture, and…
Added 14 mins ago
Cyber Security Engineer
System One
Merrifield, VA
…candidates whose backgrounds are limited to general SOC monitoring, vulnerability management, or standard endpoint security administration. In addition, hands-on Microsoft Defender…
Added 15 mins ago
Senior Manager, Technical Excellence & Escalations
Tenable, Inc.
Headquarters, MD
Act as the Technical Support point of contact for high-severity customer situations - providing assurance and coordination without displacing the assigned Escalations Engineer.
Added 27 mins ago
B
Linux Systems Administrator, Mid-Level
Bowhead
Corona, CA
- $100,000 to $110,000 USD / year
…Ubuntu) including operating system installation, patching, and security hardening.• Subject Matter Expertise: Serve as the primary point of contact and subject matter expert for all…
Added 28 mins ago
Baseline Security Engineer
Take2
United States
Support Information Technology operations by creating, reviewing, developing, and customizing security configuration baselines using CIS and STIG benchmarks. Apply NIST 800 Special…
Added 40 mins ago
Lead Systems Engineer
MANTECH
Laurel, MD
The Lead System Engineer will oversee, maintain, and modernize enterprise server infrastructure across both on-premises and AWS cloud environments, delivering mission-critical…
Added 43 mins ago
2027 Associate Cyber Systems Engineer - Roy UT
CORP-Corporate Office
United States
Northrop Grumman is seeking an Associate Cyber Systems Engineer. This position will be located at our Defense Systems Sector in Roy, UT.
Added 48 mins ago
I
Senior Cloud Security Engineer
Iterable
Remote, United States
- $141,000 to $194,000 USD / year
Customers trust Iterable with sensitive information, expecting us to safeguard their data. Iterable's Security team leads a cross-functional effort across the company to ensure that all…
Added 53 mins ago
K
Full Stack Engineer - Remote
Kforce
Remote, United States
- $46 to $52 USD / hour
Strong understanding of application security, vulnerability remediation, and patching
Added 1 hour ago
Red Hat OpenShift Engineer
ECS FEDERAL LLC
Springfield, VA · FAIRFAX, VA
The engineer will work as a part of an integrated cloud and infrastructure team supporting Red Hat OpenShift environments across AWS GovCloud, Azure Government, classified cloud,…
Added 1 hour ago
C
Lead Cybersecurity Engineer - Innovation & Automation
Credence
Remote, United States
- $135,000 to $156,000 USD / year
Credence has an immediate need for a Lead Cybersecurity Engineer - Innovation & Automation to serve as the technical lead for cybersecurity engineering, cybersecurity tools, and emerging…
Added 1 hour ago
NL
Lead Network Security Engineer (F5 required)
NYU Langone Medical Center
New York, NY
- $121,792.21 to $166,950 USD / year
We have an exciting opportunity to join our team as a Lead Engineer - Network Security Systems.
Added 1 hour ago
Senior DevSecOps Engineer
BAE Systems
Nashua, NH
As a Senior DevOps / DevSecOps Engineer, you will help mature our CI/CD capabilities so complete variants of our microservices and front-end applications can be built, validated, and…
Added 2 hours ago
Test Principal Engineer
Austin, TX · TX
Dell Technologies is seeking a highly motivated Test Principal Engineer to lead the operational management and strategic development of a critical validation laboratory within the Global…
Added 2 hours ago
IG
TSSCI Patch Management Engineer
Insight Global
Largo, FL
- From $74 USD / hour
ACAS vulnerability/compliance scanning experience (Tenable Nessus also acceptable)
Added 2 hours ago
IG
TSSCI Systems Security Engineer
Insight Global
Largo, FL
- From $74 USD / hour
ACAS vulnerability/compliance scanning experience (Tenable Nessus also acceptable)
Added 2 hours ago
IG
Remote Linux Vulnerability Engineer
Insight Global
Remote, United States
- $120,000 to $130,000 USD / year
An employer is looking for a Remote Linux Vulnerability Engineer in the United States. The Linux Vulnerability Engineer is responsible for accelerating vulnerability remediation and…
Added 2 hours ago
Security/ATO Automation Engineer
Jobgether
Remote, United States
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Security/ATO Automation Engineer based in the United States.
Added 2 hours ago
Network Virtualization Engineer
Cimarron Software Se
Colorado Springs, CO
Cimarron is seeking a ***Network Virtualization Engineer ***to support the Missile Defense Agency (MDA) on the Integrated Research and Development for Enterprise Solutions (IRES) contract…
Added 2 hours ago
Senior Cyber Engineer
The Aerospace Corpor
Colorado Springs, CO
…shape existing and future space missions across the national security space (NSS) enterprise. DSG is unique at Aerospace as it not only directly supports major customers, including the U.S.…
Added 2 hours ago
Full Stack Engineering Manager
Lockheed Martin
Colorado Springs, CO
Experience applying security baselines or remediating Nessus or SCAP vulnerability findings across infrastructure platforms
Added 2 hours ago
Full Stack Engineering Manager/ IPT Lead
Lockheed Martin
Colorado Springs, CO
Experience applying security baselines or remediating Nessus or SCAP vulnerability findings across infrastructure platforms
Added 2 hours ago
Principal Reverse Engineering/Vulnerability Research Engineer
Jobgether
Remote, United States
…Our partner is looking for a Principal Reverse Engineering/Vulnerability Research Engineer based in the United…
Added 3 hours ago
Network Engineer
Trinzic
Huntsville, AL
Coordinate with cybersecurity personnel to support RMF compliance, vulnerability remediation, STIG implementation, and security hardening activities.
Added 3 hours ago
ISSE/Cybersecurity Engineer- TS/SCI w/poly
GD Information Technology, Inc.
United States
● Coordinate with ServiceNow SysAdmins coordinate to maintain software in accordance with security mandates, including testing and deployment of Information Assurance Vulnerability Alert…

Bowhead

Linux Systems Administrator, Mid-Level

Corona, CA, United States

$100,000 to $110,000 USD / year

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Job details

Pay: $100,000 to $110,000 USD / year
Apply by: Nov 5, 2027
Posting language: English
Posted: Nov 5, 2026

Original job description

Overview

Bowhead is seeking a highly skilled and experienced Mid-Level Linux System Administrator to join our dynamic IT team. This is a 100% onsite position located in Norco, CA. As a Linux Subject Matter Expert (SME), you will be responsible for the administration, maintenance, and support of our critical Linux-based infrastructure. Experience working within a Department of Defense (DoD) environment is highly desirable.

This position is 100% onsite.

Responsibilities

Systems Administrator administers and supports daily operational requirem• Linux Systems Administration: Install, configure, and maintain Linux servers (e.g., Red Hat, CentOS, Ubuntu) including operating system installation, patching, and security hardening.• Subject Matter Expertise: Serve as the primary point of contact and subject matter expert for all Linux-related issues, providing guidance and support to other team members.• Performance Monitoring and Optimization: Monitor system performance, identify bottlenecks, and implement solutions to optimize system performance and stability.• Security Management: Implement and maintain security measures to protect systems and data, including access controls, intrusion detection, and vulnerability scanning.• Scripting and Automation: Develop and maintain scripts (e.g., Bash, Python) to automate routine tasks and improve operational efficiency.• Troubleshooting and Problem Solving: Diagnose and resolve complex system issues in a timely and effective manner.• Documentation: Create and maintain comprehensive documentation of system configurations, procedures, and troubleshooting steps.• Collaboration: Work closely with other IT teams (e.g., networking, security, development) to ensure seamless integration of systems and services.• Backup and Recovery: Implement and maintain backup and recovery procedures to ensure data integrity and business continuity.• Compliance: Ensure systems comply with relevant security standards and regulations.

Qualifications

Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent experience.• 5+ years of experience as a System Administrator with a strong focus on Linux systems.• Deep understanding of Linux operating systems, including kernel configuration, system services, and security principles.• Proficiency in scripting languages such as Bash and Python.• Experience with virtualization technologies (e.g., VMware, KVM).
Security+ certification or equivalent.• Strong troubleshooting and problem-solving skills.• Excellent communication and interpersonal skills.• Ability to work independently and as part of a team.
Desired:• Experience working in a Department of Defense (DoD) environment.• Experience with security compliance frameworks (e.g., STIGs, NIST).• Experience with configuration management tools (e.g., Ansible, Puppet).• Experience with containerization technologies (e.g., Docker, Kubernetes).• Relevant certifications (e.g., Red Hat Certified Engineer (RHCE), CompTIA Linux+).

SECURITY CLEARANCE REQUIREMENTS: Must currently hold a security clearance at the minimum Secret level.

Physical Demands:• Must be able to lift up to 25 pounds• Must be able to stand and walk for prolonged amounts of time• Must be able to twist, bend and squat periodically

Targeted salary range is $100,000 to $110,000 annually based on qualifications and experience.

Please note that the salary information is a general guideline only. Bowhead considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as, market and business considerations when extending an offer.

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