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We're seeking a seasoned Linux Admin/Test Engineer to join our elite team in Hanover, Maryland where your work will directly contribute to achieving critical national cyber mission objectives, offering a unique opportunity to make a meaningful impact unlike any other program in this field. Since 2006, MAXISIQ has advanced the state of Cyber RDT&E by bringing together industry expertise in software, hardware, communications and security, and leveraging decades of operational experience to deliver exceptional value to communities and the critical missions they support.

MAXISIQ, Inc.

Linux Admin/Test Engineer

One Red Cent - Direct

YEAR

Our team of solution architects, computer engineers, software engineers and business specialists serves civilian federal agencies and commercial clients, with a focus on systems integration and support for large-scale, mission-critical systems. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

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Jobot

FAA Voice System Test Engineer

HOUR

This role bridges full-stack software development with automated security gates, enforcing compliance with DoDI 8430 (Accelerated Mission Software Development), the DoD Software Modernization Strategy, and Continuous Authorization to Operate (cATO) criteria. cATO & Governance Automation - Implement automated policy-as-code to satisfy continuous compliance gates under DoDI 8430 and OSD CIO cATO requirements (Real-time Visibility, Active Cyber Defense, Pipeline Attestation).

Every day, System One focuses on services and solutions that require a high degree of specialization, in-demand technical skills, and large-scale operational expertise. We are essential partners to those on the front lines of our nation’s most critical infrastructure, technology, and life sciences initiatives. 
Founded more than 40 years ago as a staffing partner to the engineering industry, today System One is a diversified organization operating in over 50 locations and putting more than 9,000 people to work in the United States, Canada, and the United Kingdom.

System One

Sr DevSecOps Engineer

Masters Degree in Computer Science, Information Technology, or related field AND 2+ years technical experience in software engineering, network engineering, or systems administration OR Bachelors Degree in Computer Science, Information Technology, or related field AND 4+ years technical experience in software engineering, network engineering, or systems administration OR equivalent experience. Our team works across all facets of isolated system engineering and is deeply involved in defining and improving service health through SLIs/SLOs and error budgets, building automation to reduce toil, strengthening observability (logs, metrics, traces), reducing systemic latency, validating and transforming data, and optimizing throughput and capacity.

DO WHAT YOU LOVE Make your mark on the world’s most used technologies. Develop the next hit mobile application. Pioneer a startup that could be the next big thing. At Microsoft, you choose your path. Headquartered in Redmond, Washington, Microsoft is a top innovator in both the consumer and enterprise technology industry. Just a few of the many things our products do are unleash creativity, connect businesses, and make learning more fun. But our continued success is based on one thing: our employees. We hire amazing, talented people and give them the opportunities—and the tools—to succeed. WHY MICROSOFT? As a Microsoft employee, you’re surrounded by a diverse group of the smartest people in your field. This fosters new ideas, better business results, and creates a dynamic work environment. In the office, you’re constantly challenged and supported by your colleagues. Every day holds something new and exciting. We also offer unparalleled depth and breadth of career opportunities. As an industry leader in multiple fields, working for Microsoft means being able to do whatever you feel passionate about—and being able to make an impact in that field. From day one, we give our employees significant responsibility. This means that you’ll know that you directly contributed to something that has a positive impact on people worldwide. Whether you choose to work in management, dive deep into the newest technology, or explore multiple professions, you’ll find everything you need at Microsoft to drive your career—and to make a difference. WE GET IT – YOU’RE MORE THAN YOUR JOB Everyone works differently and is motivated by different things. We also understand that there’s more to you than your job. That’s why we offer competitive pay and a wide assortment of benefits-- to help you make the most of life at work and away from it. GET THE BALL ROLLING

Microsoft

Site Reliability Engineer - CTJ - POLY

Ivy Exec

Expertise in large-scale IP Networking & Testing with backbone routers (Juniper MX and Cisco ASR9K) running ISIS, BGP/MP-BGP (multi AS), MPLS routing protocols, switches and testing gear including traffic generators from IXIA, Spirent Test Center and Agilent N2X. These technologies include network devices (routers, switches, firewalls, and Intrusion Detection Systems (IDS), and services Authentication, Authorization and Accounting (AAA), Access Control List (ACL), secure remote access (i.e Secure shell, Secure VPN, IPSec), and IPv6 capable devices.

By Light Professional IT Services

IP Network Test Engineer

5+ years of combined experience with Computer Network Operations (CNO)/ Computer Network Exploitation (CNE)/ Computer Network Defense (CND) platforms, cyber training, validation exercises, and working with cyber protection teams (CPTs), including planning, coordinating, and execution. The successful candidate possesses hands-on experience in both Windows and Linux systems, virtualized infrastructures, and cybersecurity tools, with the ability to develop, deploy, and troubleshoot complex training scenarios.

Cyber Range Engineer

FEED

Develop and enhance server-side frameworks and modules for a web-based Learning Management System (LMS), including Java Servlets , JSPs , Tomcat integration, data parsing, and backend workflow logic. When program needs and funding align, you may also have opportunities to contribute to other Tactical Signature Guidance (TSG) systems —providing exposure to state-of-the-art technologies that directly support the development of advanced sonar tactical decision aids (TDAs) .

Everything we do is built on our commitment to do the right thing for our customers, our employees, and our communities. Learn more about the values and culture that are the foundations of our business.

Leidos

Software Engineer (Learning Management System – Mid-Level)

Appcast Exclusive 1

We are seeking a System Test Engineer with strong experience in hardware and software system-level testing, preferably within mission-critical communications, Air Traffic Management (ATM), telecommunications, or advanced networking environments. This is an excellent opportunity to work with sophisticated telecommunications, networking, and Air Traffic Management systems while collaborating with engineering teams, customers, and technical stakeholders.

System Test Engineer - VoIP systems

Join a team working on complex, mission-critical technology with direct exposure to Air Traffic Management systems, VoIP, telecommunications, networking, and hardware/software integration. The ideal candidate will have a proven track record in testing Mission Critical and/or Air Traffic Management (ATM) systems, network infrastructure, and radio-telephone communications software and hardware elements.

Voice (VoIP) Systems Test Engineer (FAA)

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We are committed to creating an environment where employees are empowered to make an impact, work alongside highly talented teams, and contribute to meaningful, mission-critical initiatives in a supportive and forward-thinking workplace.

Voice System Test Engineer (FAA)

Experience with FAA or other safety/mission-critical systems, Linux and Windows environments, network-analysis tools such as Wireshark, vulnerability/security testing tools, requirements traceability, Jira or similar defect-management systems, and formal FAT/SAT or customer acceptance testing would be highly desirable. With deep expertise in cloud-first architectures, automation, DevSecOps, virtualization, reliability engineering, and large-scale systems integration, we help organizations modernize infrastructure, improve operational efficiency, and support mission-critical environments where performance, security, and resiliency are essential.

System Security Test Engineer (FAA)

This work aligns with the FAA’s broader initiative to modernize legacy flight service capabilities, replacing aging infrastructure with scalable, cloud-based platforms designed to improve safety and operational efficiency—particularly in remote and high-dependency aviation environments. This is a hybrid technical role where approximately 50% of your time will be spent designing, developing, testing, and maintaining production software , while the remaining 50% will be dedicated to serving as Scrum Master for an Agile development team.

Java Software Engineer - Scrum Master

With deep expertise in cloud-first architectures, automation, DevSecOps, virtualization, reliability engineering, and large-scale systems integration, we help organizations modernize infrastructure, improve operational efficiency, and support mission-critical environments where performance, security, and resiliency are essential. Our teams partner closely with customers to deliver innovative solutions across cloud strategy, cybersecurity, systems integration, data engineering, machine learning, AI, disaster recovery, and enterprise infrastructure initiatives.

System Performance Test Engineer (VoIP)

The role additionally supports the Debian-based Linux operating system (Debian 13 "trixie" on ARM hardware) that ships embedded in certain company products, partnering with Product Engineering and R&D on OS image build, hardening, patching, and field escalations. This position manages the Linux support queue and on-call rotation, mentors junior and mid-level engineers, and partners with Security, Network, Database, Applications, and Quality teams to sustain systems available, secure, compliant, and audit-ready in a 24x7x365 environment.

Meso Scale Diagnostics LLC

Principal Linux Engineer

Meso Scale Discovery

ea_via_bold

Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc. . Disclaimer: The salary range provided is an estimate based on current market conditions and may be adjusted based on factors such as experience, skills, and qualifications.

Shield Consulting Solutions

Sr. Linux Engineer

The Applicant Manager

We''re seeking a seasoned Linux Admin/Test Engineer to join our elite team in Hanover, Maryland where your work will directly contribute to achieving critical national cyber mission objectives, offering a unique opportunity to make a meaningful impact unlike any other program in this field. Since 2006, MAXISIQ has advanced the state of Cyber RDT&E by bringing together industry expertise in software, hardware, communications and security, and leveraging decades of operational experience to deliver exceptional value to communities and the critical missions they support.

Iomaxis LLC

Configure and manage Linux, and possibly Windows operating systems, installs/loads operating system software and patches to maintain security compliance, troubleshoot, maintain integrity of and configure network components, along with implementing operating system enhancements to improve reliability & performance. Provide support to IT systems including day-to-day operations, monitoring & problem resolution for all the client/server/storage/network devices, etc.

Senior Linux Engineer

Associate's degree and 5+ years of experience supporting IT projects and activities, Bachelor's degree and 3+ years of experience supporting IT projects and activities, or Master's degree and 1+ years of experience supporting IT projects and activities. Ability to obtain a DoD 8570 Cybersecurity Service Provider - Infrastructure Support Certification (CSSP-IS), including CEH, CySA+, GICSP, SSCP, CHFI, CFR, Cloud+, or CND Certification, within 30 days of start date.

Booz Allen is an advanced technology company. We build commercial-grade products and solutions for America’s most critical defense, civil, and national security priorities.

Booz Allen Hamilton Inc.

Linux And Ansible Automation Engineer

The ideal candidate will bring strong expertise across Linux systems administration, application servers, virtualization, and security, with the ability to troubleshoot complex issues and support both virtual and physical infrastructure across enterprise environments. CDIT is seeking an experienced Senior Linux Systems Administrator / Engineer to support an Intelligence Community-wide mission environment and service.

Linux Engineer Jobs in Maryland

Linux Admin/Test Engineer MAXISIQ, Inc.

FAA Voice System Test Engineer Jobot

Sr DevSecOps Engineer System One

Site Reliability Engineer - CTJ - POLY Microsoft

IP Network Test Engineer By Light Professional IT Services

Cyber Range Engineer By Light Professional IT Services

Software Engineer (Learning Management System – Mid-Level) Leidos

System Test Engineer - VoIP systems Jobot

Voice (VoIP) Systems Test Engineer (FAA) Jobot

Voice System Test Engineer (FAA) Jobot

System Security Test Engineer (FAA) Jobot

Java Software Engineer - Scrum Master Leidos

System Performance Test Engineer (VoIP) Jobot

Principal Linux Engineer Meso Scale Diagnostics LLC

Principal Linux Engineer Meso Scale Discovery

Sr. Linux Engineer Shield Consulting Solutions

Linux Admin/Test Engineer Iomaxis LLC

Senior Linux Engineer Shield Consulting Solutions

Linux And Ansible Automation Engineer Booz Allen Hamilton Inc.

Sr. System Admin/System Engineer - Linux CDIT

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