Linux Systems Administrator - Dream Chaser Mission Systems; Systems Engineer III

Sierra Space Careers:

At Sierra Space, we build the missions and systems that keep our world secure in the domain above Earth.

Sierra Space team members share a spirit of innovation and collaboration and a belief that we can deliver on the boldest missions in space today. Together with our customers, we aim to safeguard our nation, sustain human presence in space, and secure the freedom of operations in low Earth orbit and beyond.

Our success is measured by the trust of those who rely on what we build and deliver, and our technologies keep the United States and its allies mission-ready throughout space.

We are mission-driven, and together, we are an extraordinary team.

Sierra Space is seeking a Linux Systems Administrator to support mission-critical IT systems, networks, and infrastructure in a space flight mission critical environment. This role focuses on Linux administration of real-time spacecraft ground systems and applications as well as certifying as a Ground Control (GC) flight controller.

Our mission is driven by an unyielding commitment to advancing space-based technology in service of our customers and safeguarding national security. We seek individuals who are passionate about innovating beyond boundaries and relentlessly pursuing solutions that protect, preserve and empower - to join us in this critical mission.

We're looking for team members who align with our values, mission and goals - while also meeting the minimum qualifications below. The preferred qualifications are a bonus, not a requirement.

Linux Systems Administration:

• Administer, configure, and maintain Linux-based servers and workstations (RHEL/CentOS)
• Patch, harden (STIG compliance), tune performance, and troubleshoot Linux systems
• Manage virtualized Linux environments (VMware) and containerized applications (Docker)
• Write and maintain Bash/Python scripts for automation, monitoring, and administration

Mission & Network Support:

• Provide end-to-end support of mission-critical IT systems, infrastructure, and networks
• Configure and support networking components (Cisco switches, Palo Alto firewalls)
• Administer command and telemetry software (InControl & Amergint | ARKA)
• Support real-time missions and pre-mission simulations
• Provide Flight & Test Operations end-user support

Documentation & Process:

• Develop documentation for system design, operations, and training
• Refine operational concepts and processes
• Perform general systems engineering and integration tasks
• Collaborate closely with NASA during all phases of mission preparation and planning

• BS in Computer Science, Systems Engineering, or related discipline + typically 5 or more years of relevant experience (relevant experience may count toward degree; relevant advanced degree may count toward experience)
• Experience with VMware, Docker, Python, RF, Cisco switches, and Palo Alto firewalls
• Experience with command and telemetry software (InControl & Amergint | ARKA)
• Proficient with Linux and Windows operating systems (Linux depth required)
• Experience in IT system & network administration, data management, software configuration, and real-time mission support
• Practical knowledge of engineering principles and practices
• Experience working in multi-disciplinary design and development teams
• Knowledge of requirements management, functional requirements parsing/derivation/allocation, systems design/integration, technical risk identification and management, and V&V principles
• This role requires you to work on-site at our Louisville, CO location
• Ability to obtain/maintain Secret or higher U.S. Security Clearance may be required
• Must pass NASA background check and maintain NASA clearance

• Linux certification (RHCSA,…