New

Linux System Administrator (Hybrid)

22nd Century Technologies, Inc.
Pay Rate: $50 - $55/hr on w2
United States, Maryland, Annapolis
Feb 12, 2026
Title: Linux System Administrator (Hybrid) Location with zip code: Annapolis, MD 21401 Duration: 6+ months Shift Hours : 40 hrs./week Shift Timing (Day/ Evening/ Night): 1^st Requirement: US citizens only Job Description: Aerospace Connected Aviation Solutions (CAS) Networks and Messaging Services support over 1,500 aviation customers, transmitting over 75 million messages per day across the Aviation community. We are currently seeking a senior-level Linux Administrator to join the Messaging Application Engineering team. The ideal candidate is a self-starter and a team player with an ambitious and diverse technical background. In addition, this person must be an articulate problem solver who is passionate about standardization, a champion for systematic design, and comfortable working in a highly collaborative/fast-paced environment. Employees working in Hybrid roles will regularly work >50% onsite and <50% offsite. The ratio of time working on-site will be determined in partnership with your leader. Role & Responsibilities: The Linux Administrator is responsible for the sustainment and maintenance of our core servers Linux within a Bare Metal infrastructure to appropriate standards and best practices in a fast-paced work environment Their responsibilities will include administering system-level procedures; patch management; service layer application; deployment creation; redundancy management, and certificate management Work with developers to build containerization that promotes automated, continuous integration and accelerates delivery of new products and services Install upgrades, configure, test, and support system software Some on-site duties include racking devices, cabling, and deploying new systems in multiple data centers. Able to lift 40lbs. Perform configurations and adjustments to enhance system performance. Perform automated and manual backup and restorative processes Ensure the necessary security procedures are implemented and enforced across their work Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 3 years of prior relevant experience or an Advanced Degree in a related field and 2 years relevant experience or in absence of a degree, 7 years of relevant experience. Experience with the Linux CLI, debugging tools, and network stack Working knowledge of core networking, subnetting, firewalls, and routing Proficient in configuration, troubleshooting, installation, operation, maintenance, and system administration of Multiple Linux distros such as RHEL and Ubuntu Ability to create shell programs and utility scripts Ability to troubleshoot and resolve system hardware, software, and connectivity issues Ability to work independently in an international, cross-functional team environment, including occasional off-hours tasks and meetings Ability to multi-task, prioritizes workload, and successfully handle competing deadlines Must be authorized to work in the U.S. without sponsorship now or in the future. Client will not offer sponsorship for this position. Must be a U.S. Citizen Ability to support hybrid (Primarily on site) schedule at Annapolis Office Required Experience: Experience with IBM MQ Experience with Docker, Kubernetes, Containerization Experience with storage appliances (TrueNAS, FreeNas) with a focus on NAS and ISCSI protocols Ability to support a 24x7 rotating on-call schedule will be required in this position Occasional travel, as needed, less than 20 days a year. Experience working with Configuration Management Systems (git in particular) Experience Solaris and ZFS Do you want to make your mark in the Aviation industry: Do you want to help release the next generation of products and services to advance the way we transmit millions of aviation data daily? As a Linux System Administrator, you will be managing and developing systems on a global scale to help the Aviation industry move undisrupted. You will be responsible for the messaging data in transit to ensure the on-time arrival for you, your friends and families, and all passengers flying around the globe. The systems you will manage support over 1,500 aviation customers, transmitting over 75 million messages daily across the Aviation community. Are you ambitious and have the diverse technical background to contribute to this incredible mission? Employees working in Hybrid roles will regularly work >50% onsite and <50% offsite. The ratio of time working on-site will be determined in partnership with your leader. Required Skills: Responsible for sustaining and maintaining our core servers Linux within a Bare Metal infrastructure on-premises. On-site duties include racking devices, cabling, and deploying new systems in multiple data centers. Help the team deploy and maintain the rollout of the next generation of products and services and transition customers to the new platforms. Support the global data centers (installs, upgrades, configure, test, support system software, and security audits of hardware) and instill customer confidence in our products. Monitor and respond to everyday issues and problems and contribute to Root Cause Analysis (RCA) and support the Software Development Team by administrating team tools and processes. Keep up with the demands and tech debts of the existing infrastructure as we move to the new and advanced infrastructure. Required Knowledge: Deepen your knowledge and understanding of using Linux to deploy sophisticated COTS and Collins' web-based applications and microservices. Learn how aviation data moves behind all the airline ticketing and baggage check-in, how engines transition data to their services, how passenger information is transitioned across country borders, and overall how the aviation industry moves. Gain insights into team dynamics and how to foster collaboration, trust, and effective communication within our teams. There may be occasional off-hour tasks and meetings. Work to become a subject matter expert in Messaging Engineering with exposure to the variety of business and products Required Qualifications: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 1 year of prior relevant experience or an Advanced Degree in a related field or in absence of a degree, 5 years of relevant experience. Prior experience working in the Linux CLI, debugging tool, and network stack Prior experience in core networking, subnetting, firewalls and routing Prior experience troubleshooting and resolving system hardware, software and connectivity issues Prior administration experience of multiple Linux distros such as RHEL and Ubuntu Must be authorized to work in the U.S. without sponsorship now or in the future. Client will not offer sponsorship for this position. Must be a U.S. Citizen Ability to support hybrid (primarily on site) schedule at Annapolis Office Qualifications We Prefer: Experience with IBM MQ Experience with storage appliances (TrueNAS, FreeNas) with a focus on NAS and ISCSI protocols. Experience with storage appliance Solaris and ZFS a plus. Additional Information: Backgrounds that are NOT transferable. Database Admin. Networking Admin. Windows Admin.