Full-Time

Linux Administrator 2

CesiumAstro

CesiumAstro

501-1,000 employees

Designs satellite communications hardware and software

Compensation Overview

$94k - $112k/yr

Westminster, CO, USA

In Person

Bachelor's

Category
IT Operations (1)
Required Skills
TCP/IP
Computer Networking
Cybersecurity
Linux/Unix

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Requirements
  • Bachelor's degree in Computer Science, Information Technology, Information Systems, Computer Engineering, Cybersecurity, or a related technical discipline with 2 years+ experience in Linux systems administration.
  • Knowledge of Linux systems administration principles and enterprise infrastructure support
  • Understanding of networking fundamentals including TCP/IP, DNS, DHCP, VLANs, and firewalls
  • Experience troubleshooting Linux operating system and server-related issues
  • Familiarity with cybersecurity best practices and system hardening methodologies
  • Ability to support operational environments requiring high availability and rapid issue resolution
  • Strong analytical, organizational, and problem-solving skills
  • Ability to communicate technical information effectively across cross-functional teams
  • Ability to sit and work at a computer for extended periods of time
  • Ability to occasionally lift and transport IT equipment up to 25 pounds
  • Ability to support operational activities in laboratory, manufacturing, or launch support environments as needed
  • Ability to maintain attention to detail while managing multiple priorities and deadlines
  • Ability to respond effectively during time-sensitive operational support activities
  • Ability to manage multiple priorities in a fast-paced operational environment
Responsibilities
  • Administer, configure, monitor, and maintain Linux-based servers and operational systems supporting Element 1 launch operations
  • Perform system provisioning, patching, upgrades, hardening, and performance tuning activities across development, test, and production environments
  • Support operational readiness of mission-critical infrastructure with a focus on reliability, uptime, and security
  • Manage user accounts, permissions, authentication methods, and system access controls in accordance with cybersecurity and compliance requirements
  • Troubleshoot Linux operating system issues, system performance concerns, and infrastructure-related incidents
  • Support infrastructure activities associated with launch operations, ground systems, integration labs, and operational test environments
  • Assist with system monitoring, log analysis, backup management, and disaster recovery processes
  • Support virtualization, storage, and server environment maintenance activities
  • Collaborate with network, cybersecurity, and software teams to resolve infrastructure and operational issues
  • Participate in operational support activities during critical testing and launch windows as required
  • Develop and maintain technical documentation, standard operating procedures, and system configuration records
  • Support implementation of infrastructure automation and operational efficiency improvements
  • Assist with system audits, compliance activities, and cybersecurity remediation efforts
  • Contribute to continuous improvement initiatives focused on infrastructure reliability, scalability, and operational excellence
  • Perform other duties, responsibilities, and special projects as assigned to support business operations, organizational objectives, and evolving Element 1 program needs
Desired Qualifications
  • Experience supporting aerospace, defense, manufacturing, mission operations, or other highly regulated operational environments

CesiumAstro develops end-to-end space and airborne communications systems, including active phased array antennas, software-defined radios, and complete payloads. Its technology enables electronically steered beams for inter-satellite links, high-rate downlinks, lunar and deep-space communication, and 5G/NTN networks. It ships plug‑and‑play, commercially manufactured hardware and SDR software as a full-stack solution, reducing development time and cost. The company targets both government programs (NASA, DoD) and commercial space ventures, aiming to make space-based connectivity more accessible and adaptable.

Company Size

501-1,000

Company Stage

Debt Financing

Total Funding

$778.2M

Headquarters

Austin, Texas

Founded

2017

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Simplify Jobs

Simplify's Take

What believers are saying

  • EXIM signed a $300 million credit agreement on September 9, 2026.
  • CesiumAstro won April 21, 2026 GMD communications work with the Missile Defense Agency.
  • The $470 million Series C and 500-job Texas expansion fund capacity through 2026.

What critics are saying

  • AnySignal trade-secret litigation still shadows CesiumAstro's 2024 competition strategy and IP hygiene.
  • Three 2026 acquisitions demand integration discipline; failures would delay contracts and erode margins.
  • Element and Skylark depend on defense budgets; a lost MDA or SDA program hits growth hard.

What makes CesiumAstro unique

  • CesiumAstro vertically integrates phased arrays, RF chips, software, and satellites in Austin.
  • Skylark, Element, and mission software acquisitions create a full-stack defense communications platform.
  • EXIM-backed manufacturing gives CesiumAstro rare U.S. supply-chain control versus fragmented competitors.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

401(k) Retirement Plan

Stock Options

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

0%
Aviation Week
Sep 10th, 2026
CesiumAstro secures $300M EXIM credit to consolidate US manufacturing in new 270,000-ft facility

The Export-Import Bank of the United States has signed a $300 million credit agreement with CesiumAstro, an Austin-based space and defence connectivity specialist. The agreement, announced on 9 September, aims to consolidate the company's design, manufacturing, assembly and test operations into a single 270,000-square-foot US facility currently under construction. The financing includes a $20 million revolving credit facility from JP Morgan, making it EXIM's largest loan approval under its "Make More in America" initiative. CesiumAstro is the only company to receive a second credit agreement under the programme. EXIM previously approved $185 million in financing to CesiumAstro in January 2026, later increased to $280 million. Founded in 2017, CesiumAstro recently secured a $470 million Series C funding round.

GovCon Wire
Aug 26th, 2026
CesiumAstro buys 1Aardvark to add mission software for defense space.

CesiumAstro buys 1Aardvark to add mission software for defense space. * 1Aardvark is a service-disabled veteran-owned and HUBZone-certified business in Manassas, Virginia * Its work covers missile defense and missile tracking programs * The deal follows CesiumAstro's purchases of Vidrovr and Jariet Technologies this year CesiumAstro has acquired 1Aardvark, adding mission software and systems engineering to a portfolio built around satellites and communications payloads. CesiumAstro announced the deal Tuesday. 1Aardvark, based in Manassas, Virginia, builds software, algorithms and systems engineering for national defense programs. It holds service-disabled veteran-owned small business and HUBZone certifications. What does 1Aardvark bring to CesiumAstro? 1Aardvark's software supports missile defense and missile tracking work. The company builds systems that enable distributed platforms to coordinate and execute missions in contested or disconnected environments. CesiumAstro expects the pairing to yield spacecraft that adjust to changing conditions and keep operating when connectivity degrades. Shey Sabripour, founder and CEO of CesiumAstro, said defense space systems increasingly require software that can adapt and make decisions. According to Ryan Kenward, president of 1Aardvark, joining CesiumAstro extends the company's work pushing mission capability to the edge. How does the deal fit CesiumAstro's acquisition strategy? The 1Aardvark deal lands days after CesiumAstro closed its purchase of Jariet Technologies, a semiconductor firm focused on millimeter-wave radio frequency system-on-chip designs. That deal gave the company in-house chip capability to pair with its phased-array antenna and payload work. The company also acquired Vidrovr in March, an AI firm specializing in real-time multimodal signal analysis. Vidrovr co-founder Joe Ellis oversees integration of machine learning tools into the CesiumAstro portfolio. CesiumAstro closed a $470 million Series C round in February and took $200 million in Export-Import Bank financing in January to acquire a 270,000-square-foot West Austin facility.

Noah Business Intelligence
Aug 25th, 2026
CesiumAstro's latest acquisition enhances resilience and integration for government space missions

CesiumAstro’s purchase of Virginia-based 1Aardvark advances its strategy to deliver more resilient, software-defined communications and onboard systems for government missions, strengthening its position in the defence...

BISinfotech
Aug 13th, 2026
CesiumAstro acquires Jariet Technologies for defense capabilities

CesiumAstro acquires Jariet Technologies, expanding semiconductor capabilities across SATCOM, electronic warfare, radar and space systems.

AInvest Fintech Inc.
Jun 9th, 2026
CesiumAstro raises $270.5M in private placement offering

CesiumAstro has raised $270.5 million in a private placement offering, according to a Form D filing with the Securities and Exchange Commission. The offering was conducted under Regulation D, Rule 506. The filing provides details about the offering structure, including shares issued and offering price, though the company did not disclose the identities of participating investors or specific terms beyond SEC requirements. The capital will support CesiumAstro's business operations and strategic initiatives. The Form D filing is a standard requirement for Regulation D offerings to provide regulatory transparency. The company has not indicated whether additional offerings are planned.