Network Administrator II

Westminster, COFull-time

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

CesiumAstro is seeking a Network Administrator II to join our 2nd or 3rd shift. In this role, you will support network infrastructure and communications systems associated with the Element 1 Launch Operations Program. This role is responsible for maintaining secure, reliable, and high-performing network environments that support engineering, integration, testing, mission operations, and launch activities. The ideal candidate is a proactive and technically capable network professional with experience supporting operational infrastructure in mission-critical environments. This position works closely with IT infrastructure, cybersecurity, mission operations, and engineering teams to ensure network stability, security, and operational readiness across launch and ground support systems.

JOB DUTIES AND RESPONSIBILITIES Network Infrastructure Administration

Configure, administer, monitor, and maintain enterprise and operational network infrastructure supporting Element 1 launch operations

Support switches, routers, firewalls, wireless infrastructure, and network security appliances

Monitor network performance, availability, and capacity to ensure reliable operational support

Troubleshoot network connectivity, latency, and infrastructure-related issues across operational and engineering environments

Support implementation and maintenance of VLANs, VPNs, routing protocols, and access control configurations

Operational & Technical Support

Support network infrastructure associated with launch operations, integration labs, mission operations, and testing environments

Assist with network provisioning, hardware deployments, cable management, and infrastructure upgrades

Collaborate with cybersecurity teams to support network security, vulnerability remediation, and compliance initiatives

Participate in incident response and operational troubleshooting activities during critical mission and launch support windows

Support business continuity and disaster recovery planning activities related to network operations

Documentation & Continuous Improvement

Maintain accurate network diagrams, infrastructure documentation, configuration records, and operational procedures

Assist with implementation of infrastructure improvements focused on reliability, scalability, and operational efficiency

Support network audits, compliance reviews, and cybersecurity assessments

Recommend process improvements and infrastructure enhancements based on operational needs and performance trends

Perform other duties, responsibilities, and special projects as assigned to support business operations, organizational objectives, and evolving Element 1 program needs

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS Bachelor's degree in Computer Science, Information Technology, Information Systems, Network Engineering, Cybersecurity, or a related technical field.

2–5 years of professional experience in network administration or network operations.

Experience administering enterprise networking environments and supporting operational infrastructure.

Working knowledge of:

Enterprise networking technologies (Fortinet preferred or equivalent platforms)

Firewall and network security solutions

VPN and remote access technologies

Network monitoring, diagnostics, and troubleshooting tools

Routing, switching, TCP/IP, VLANs, and network segmentation

Ticketing systems and infrastructure management platforms

Strong analytical and troubleshooting skills with the ability to resolve network connectivity, hardware, and software issues.

Excellent communication skills and ability to collaborate across technical teams.

PREFERRED EXPERIENCE Experience supporting aerospace, defense, manufacturing, mission operations, or other highly regulated operational environments.

Familiarity with cybersecurity frameworks, compliance requirements, and vulnerability management processes.

Experience supporting 24/7 operations or shift-based environments.

CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans. CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

Bachelor's degree in Computer Science, Information Technology, Information Systems, Network Engineering, Cybersecurity, or a related technical field.