Senior Linux Windows Engineer Jobs

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Systems Engineer

SAIC

Eglin Air Force Base, Florida, USA

Full-time

Job ID: 2508085 Location: EGLIN AFB, FL, US Date Posted: 2025-07-31 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: Secret Clearance Level Must Be Able to Obtain: Top Secret Potential for Remote Work: No Description SAIC is seeking a highly motivated Junior Systems Engineer with foundational experience in systems administration, virtualization, and automation tools. The engine

Senior Systems Administrator

General Dynamics Information Technology

Mary Esther, Florida, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Interim Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, System Administration, Virtual Environments, Virtualization, VMware Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a personal impact as a Senior Systems Administrat

Desktop Support Technician (Mac & Windows)

TEKsystems c/o Allegis Group

Portland, Oregon, USA

Full-time

A Large E-Commerce Company in Portland, OR is hiring a Desktop Support Technician (Mac & Windows) to join the team for a great long term opportunity! Job Duties: Troubleshooting with both MAC and Windows environments/applications80% Tier II onsite Desktop Support and 20% Tier I Virtual Chat support.Support of global workforce both onsite and remote workersEnsuring data integrity in the Asset Management systemPerform asset management tasks, inventory, audits and disposals at their siteProactively

Systems Administrator

Apex Systems

El Segundo, California, USA

Full-time

Job#: 2037008 Job Description: Apex Systems is seeking a Systems Administrator to design, install, operate, secure and maintain dedicated Program Information Technology Infrastructure. The environment consists of multiple sites and networks with servers and High Performance Computing Clusters running Red Hat Linux in multiple locations around the U.S. and growing. Future expansion will include WNDRVR VxWorks embedded Linux operation systems. Linux and Windows servers host engineering application

System Administrator

Lockheed Martin Corporation

Hurlburt Field, Florida, USA

Full-time

Job Description WHAT WE'RE DOING At Lockheed Martin, we're revolutionizing the aerospace and defense sector through groundbreaking technology, advanced manufacturing processes, and a world-class team of professionals. Our mission-driven approach and unwavering dedication to excellence ensure that we continue to deliver superior products and solutions to our customers around the world. THE WORK Lockheed Martin is seeking a System Administrator to join our Information Technology team supporting

FLEX Cloud Infrastructure Security Automation Engineer

Marriott International

Bethesda, Maryland, USA

Full-time

Job Description This is a temporary position. CLOUD INFRASTRUCTURE SECURITY AUTOMATION ENGINEER Experience in securing Windows and Linux through hardening components according to CIS benchmark or similar standards Demonstrable expertise in DevOps engineering, systems engineering, with a background in computer science and/or software development Demonstrable skill in DevOps automation, GitOps, and pipeline development using tools like Jenkins or Harness, Git, and Ansible Script development expe

Technical Analyst 4-Support

Oracle Corporation

Austin, Texas, USA

Full-time

Job Description Entity: Oracle America, Inc. Job Duties: Deliver solutions to the Oracle customer base while serving as an advocate for customer needs. Offer strategic technical support to assure the highest level of customer satisfaction. Create/utilize automated technology and instrumentation to diagnose, document, and resolve/avoid customer issues. Serve as an expert member of the technical problem solving/problem avoidance team, routinely sought after to address extremely complex, critical

Sr Systems Administrator

Irvine Technology Corporation (ITC)

Dallas, Texas, USA

Full-time

Sr. Systems Administrator We have an immediate need for a Sr. Systems Administrator to join our client for a full-time, direct hire position that is fully onsite in Dallas, NYC, Phoenix or Austin. This position will support a 90% virtualized environment within Azure and AWS. Location: Onsite in Dallas, NYC, Phoenix or Austin This job expects to pay about $110,000-130,000 benefits What You ll Do: Participate in on-call rotation, after-hours maintenance, and incident response to ensure system ava

Senior Software Engineer

Leidos

Annapolis, Maryland, USA

Full-time

The Software Engineer will perform software development lifecycle (SDLC) activities as a member of an Agile development team building a large complex enterprise system. Development includes the full range of turning Agile user stories into implementable concepts, through development, unit testing, integration and test, and deployment of the new capabilities for the large complex enterprise system. Following the Behavior-driven Development (BDD) pattern, developers are responsible for implementin

System Integration Engineer 2

Jacobs

Fort Meade, Maryland, USA

Full-time

Your Impact: Are you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a System Integration Engineer to join our team of passionate individuals in Fort Meade, MD. In this role you will support challenging, mission-critical projects that make a direct impact on the Nation's security and intelligence mission. Responsibilities: Install, configure, upgrade, and maintain operating system and software applications on Linux a

Junior Systems Administrator, Intelligence Systems

Aduril Industries

Reston, Virginia, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c

Systems Administrator

Booz Allen Hamilton

Offutt Air Force Base, Nebraska, USA

Full-time

Job Number: R0222258 Systems Administrator The Opportunity: Your combination of people skills and system administrator expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the technology supporting USSTRATCOM? We're looking for a system administrator with a background in Windows or Linux to help us continue the development of the Joint Integrated Missile Defense and Missile Warning Training System (JIMDTS). As a system administrator

Principal Azure Cloud Engineer

ManTech

Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and experienced Principal Azure Cloud Engineer to join our team in Chantilly, VA. In this role, you will support mission-critical operations by designing, implementing, and managing Azure cloud infrastructure. You will collaborate with cross-functional teams to enhance cloud environments using modern tools and best practices. Responsibilities include but are not limited to: Supporting Azure cloud services and infrastructure using Infrastructure as Code (IaC) tools suc

Senior Database Administrator

Radiance Technologies

No location provided

Full-time

Radiance Technologies is an employee-owned company with benefits that are unmatched by most companies in the Huntsville, AL or Dayton, OH areas. Employee ownership, generous 401K, full health/dental/life/vision insurance benefits, flexible work schedules, stimulating assignments, educational reimbursement, competitive salaries, and a pleasant work environment combine to make Radiance Technologies a great place to work and succeed. We are searching for a talented Senior Database Administrator to

Principal Cyber Security Engineer

ManTech

Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments. Responsibilities include but are not limited to: Engineering, designing, implement

Principal Cyber Security Engineer

ManTech

Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments. Responsibilities include but are not limited to: Engineering, designing, implement

Principal Cyber Security Engineer

ManTech

Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments. Responsibilities include but are not limited to: Engineering, designing, implement

Weekend Cyber Security Analyst (FT or PT Day Shift) - TS/SCI with Polygraph

General Dynamics

Washington, District of Columbia, USA

Part-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Cyber Security Job Qualifications: Skills: Cybersecurity, Event Security, Security Audit, Splunk (Inactive) Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Own your career as a Cyber Security Analyst at GDIT. Here, you'll have the opportunity

Sr. System Administrator TS/SCI Poly

Leidos

Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a System Administrator in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting,

Performance Engineer

SGS Consulting

Remote

Contract

This position is remote Job Description: The responsibilities of this position include, but are not limited to: Identifying relevant key performance indicators (KPIs) for the subject application or serviceIdentifying dependencies / interfaces with other applications and servicesDeveloping performance requirements that support the (currently stated and anticipated future) business needs and customer expectations.Developing the appropriate performance tests to validate adherence to the documented