New

Principal Linux Administrator

Sierra Space
life insurance, paid time off, 401(k)
United States, Colorado, Louisville
Jan 07, 2026
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. About the RoleThe Principal IT Systems Engineer is a senior-level role designed for professionals with extensive expertise in systems administration, cloud computing, and large-scale IT project implementation. This position is responsible for designing, deploying, and managing complex IT infrastructure, ensuring compliance with IT governance, and leading advanced cybersecurity practices. The role involves developing cloud architecture, implementing security measures, and managing large-scale IT projects from conception to completion. Additionally, the Principal IT Systems Engineer will perform advanced systems administration tasks, develop automation scripts, and collaborate with cross-functional teams on IT projects and initiatives. Furthermore, this role will be required to develop and maintain existing on-premises Linux environments support various programs within the company. In this role, you will design, deploy, and manage scalable and secure IT infrastructure while developing and implementing cloud architecture and deployment strategies using platforms such as AWS or Azure. In addition you will also be responsible for continuation of deployment and maintenance of several on-premises Linux environments working closely with DevOps for developing big bang solutions within our air gapped environments. You will ensure IT governance and compliance across all systems and processes, as well as implement advanced cybersecurity practices to protect company data and systems. Leading and managing large-scale IT projects from conception to completion will be a key responsibility, along with performing advanced systems administration tasks, including performance tuning and system optimization. You will utilize performance analysis tools to monitor and improve system performance and manage and troubleshoot complex networking and distributed computing environments. Additionally, you will develop and maintain automation scripts to streamline IT processes and improve efficiency, while programming in administrative languages such as Perl, Python, VBScript, or Windows PowerShell. Collaboration with cross-functional teams to support IT projects and initiatives will be essential, as will writing proposals, technical papers, and documentation for internal and external stakeholders. Acting as a vendor liaison and representing the company in presentations to customers, clients, and professional peers will also be part of your role. Finally, you will stay current with industry trends and emerging technologies to continuously improve your skills and knowledge. About You 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. Minimum Qualifications: Requires Bachelor's degree in a related field (or equivalent work experience in lieu of degree or Masters +10 yrs experience). Typically 12+ years of related experience. 10 plus years proven experience as a Linux Administrator or similar role. Expertise in systems administration plus 5+ years of cloud computing platforms, such as AWS or Azure. Expertise with physical server hardware on prem (Dell and HPE) Expertise with storage arrays and filers (HPE Nimble, Pure FlashBlade Pure FlashArray, Qumulo) In-depth knowledge of Linux operating systems (e.g., Red Hat, CentOS, Ubuntu). Proficiency in scripting languages (e.g., Bash, Python). Familiarity with network protocols and services (e.g., TCP/IP, DNS, DHCP). Experience with Red Hat Satellite Server. Experience with Red Hat IdM. Experience with DevOps practices and tools (e.g., Docker, Kubernetes, Jenkins). Experience with virtualization technologies (e.g., VMware). Relevant certifications (e.g., RHCSA, RHCE) are a plus. Proficiency in IT governance and compliance. Experience with advanced cybersecurity practices. Strong problem-solving skills and attention to detail. Excellent communication and teamwork abilities. Ability to design and implement large-scale IT projects. Preferred Qualifications: Advanced certifications in relevant IT fields (e.g., AWS Certified Solutions Architect, Microsoft Certified: Azure Solutions Architect Expert, RedHat). Proficiency in advanced scripting and automation tools (e.g., Ansible, Puppet, Chef). Experience deploying/maintaining of HPC Clusters Experience with setting up build-machines and software development support Experience with Artifactory and repos such as Python and Conda Understanding of containerization technologies (e.g., Docker, Kubernetes, Singularity). Familiarity with database management (e.g., MySQL, PostgreSQL). Experience with infrastructure as code (IaC) tools like Terraform, Ansible, or CloudFormation. Experience with version control systems (e.g., Git, SVN). Knowledge of storage technologies (SAN, NAS, DAS). Familiarity with cloud storage solutions like AWS S3, Azure Blob Storage. Experience working in aerospace industry and Mission Control Strong analytical and problem-solving skills. Excellent communication and interpersonal skills. Ability to work independently and as part of a team. Strong organizational skills and attention to detail. Compensation: Pay Range: $157,287.00 - $216,268.50 Your actual base compensation will be determined on a case-by-case basis and may vary based on job-related knowledge and skills, education,experience, internal equity and market competitiveness. Elevate Your Career At Sierra Space, we are committed to your personal and professional development. We empower you to make profound and meaningful contributions and foster a vibrant culture of collaboration, where teamwork ignites breakthrough innovations. We also offer a generous benefit package, including medical, dental, and vision plans, 401(k) with 150% match up to 6%, life insurance, 3 weeks paid time off, and more. Sierra Space is an industry-leading space and defense technology company providing satellites, spacecraft, and enabling mission systems and components. We deliver mission-proven technologies to our customers that safeguard our nation, protect space-based assets and enable space exploration. Application Deadline: This role will remain posted until a qualified pool of candidates is identified. Please note: Sierra Space does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to Sierra Space team members not through our approved vendor list or Talent Acquisition will be considered property of Sierra Space, and we will not be obligated to pay any referral fees. Sierra Space Corporationis an equal opportunity employer and is committed to working with and providing reasonable accommodations to applicants with disabilities. If you need special assistance or a reasonable accommodation related to applying for employment withSierra Spaceor at any stage of the recruitment process, pleasecontact us.