Full-Time

Senior Spacecraft Communication Systems Engineer 2

CesiumAstro

CesiumAstro

201-500 employees

Designs satellite communications hardware and software

Compensation Overview

$134k - $161k/yr

+ Stock Options

No H1B Sponsorship

Westminster, CO, USA

In Person

On-site in Westminster, Colorado. US work authorization required.

US Citizenship Required

Bachelor's

Category
Aerospace Engineering (2)
,
Required Skills
Cryptography

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Requirements
  • Bachelor’s degree in electrical engineering or a related field
  • A minimum of 6 years of experience with emphasis on satellite communications, RF system engineering, or related fields
  • Experience in design, verification, and operation of satellite communication links
  • Strong understanding of link budget analysis, modulation schemes, and ground station interfaces
  • Hands-on experience configuring and testing ground station equipment and space-qualified radios and antennas
  • Practical understanding of how space links fail, why, and how to fix them before they break
  • Ability to define and implement communication system CONOPS for nominal and emergency operations
  • Experience with satellite communication link licensing and regulatory compliance (ITU/FCC)
Responsibilities
  • Model, analyze and maintain the satellite’s link budget, modulation and coding, ensuring reliable communications from space to ground for all RF links
  • Architect hardware-based crypto solutions for flight hardware, manage pass-throughs and end points for users and operations
  • Strong understanding of ground station and network operations with the ability to troubleshoot issues with commercial providers and on-site terminals
  • Define how the radios are used in different mission phases, including contingency operations and emergency recovery
  • Contribute to the RF link test campaign and work with flight software and ground teams to validate end-to-end communication link performance, from antenna to command center
  • Optimize low-SWaP communications, mitigate interference, and ensure robust, fail-safe links

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

201-500

Company Stage

Debt Financing

Total Funding

$678.2M

Headquarters

Austin, Texas

Founded

2017

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Simplify Jobs

Simplify's Take

What believers are saying

  • January 2026 EXIM and JPMorgan financing backed a 270,000-square-foot manufacturing headquarters.
  • April 2026 MDA IFICS award expands Skylark into missile-defense communications.
  • CesiumAstro secured eight SpaceX rideshares, accelerating on-orbit validation for Element satellites.

What critics are saying

  • AnySignal trade-secret litigation exposed CesiumAstro's IP vulnerability and competitor leakage risk.
  • Bee Cave land-use disputes delayed headquarters execution until Lakeway's February 2026 settlement.
  • Heavy defense concentration ties growth to MDA, SDA, and EXIM procurement timing.

What makes CesiumAstro unique

  • CesiumAstro vertically integrates RF chips, phased arrays, software, and satellites in Austin.
  • Its Skylark and Element platforms target jam-resistant, software-defined military communications.
  • Jariet Technologies and Vidrovr broaden CesiumAstro into semiconductor and AI-enabled signal systems.

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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

-1%
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.

CesiumAstro
Apr 21st, 2026
CesiumAstro selected to support GMD Weapon System (GWS) in-flight interceptor communications system (IFICS) for Missile Defense Agency.

CesiumAstro selected to support GMD Weapon System (GWS) in-flight interceptor communications system (IFICS) for Missile Defense Agency. Image Credit: CesiumAstro AUSTIN, Texas, April 21, 2026 - CesiumAstro, a leader in advanced space communications, has been awarded a contract to deliver a new active phased array variant as part of an expansion to its Skylark product line. This large-aperture array, built on CesiumAstro's scalable active phased array architecture, will support modernization of the Ground-based Midcourse Defense (GMD) Weapon System (GWS), a critical part of missile defense. This award underscores Skylark's value as a software-defined, mobile-ready terminal. The system's modular design allows it to adapt to evolving mission needs, including integration across a wide range of platforms, from ground vehicles to next-generation airborne assets. "We are honored to support the Missile Defense Agency in strengthening national security through resilient, high-performance communications," said Shey Sabripour, Founder and CEO of CesiumAstro. "With our phased array architecture and ability to deliver advanced solutions with speed and reliability, CesiumAstro will provide our customer and the Missile Defense Agency a high-performance solution." CesiumAstro will collaborate with the customer to meet mission requirements with a focus on ensuring the system meets the highest standards for performance, security and readiness. About CesiumAstro CesiumAstro is a global leader in advanced connectivity solutions for space and defense, delivering next-generation systems that connect, detect, and defend across commercial, government and national security missions. Its standardized product platforms span satellites, high-performance communications payloads, terminals and advanced computing systems, all designed for scalable production and mission-ready deployment. CesiumAstro maintains complete vertical integration with in-house design, manufacturing and testing capabilities certified to AS9100D and ISO 9001:2015 standards. Headquartered near Austin, Texas, the company operates additional facilities in Colorado, California, the United Kingdom, Germany and Japan. To learn more, visit cesiumastro.com. Media Contacts Griffin Communications Group: [email protected] Aimée Ahiers, CesiumAstro: [email protected]

TXF
Mar 9th, 2026
CesiumAstro expands Texas headquarters with $500m investment

CesiumAstro expands Texas headquarters with $500m investment. CesiumAstro announced an expansion of its global headquarters in Bee Cave, Texas, with the acquisition of nearly 270,000 square feet of advanced manufacturing space, expanding capacity for continued growth tomorrow.The expansion represents a $500 million capital investment over the next five... Not yet a subscriber? Join TXF today to continue accessing content without any restrictions Or to request access to TXF Intelligence contact TXF

Business Wire
Feb 26th, 2026
CesiumAstro Announces Acquisition of Vidrovr to Enhance Space Communications Systems and Build Planetary Intelligence Layer

CesiumAstro announces acquisition of Vidrovr to enhance space communications systems and build planetary intelligence layer. CesiumAstro announced its acquisition of Vidrovr to advance the integration of AI-driven analytics and real-time signal intelligence across its space communications systems, payloads, and satellite platforms. AUSTIN, Texas-(BUSINESS WIRE)-CesiumAstro Inc., a global provider of space and defense communications systems and satellites, today announced the acquisition of Vidrovr, an artificial intelligence (AI) company specializing in real-time multimodal signal analysis. The acquisition accelerates CesiumAstro's strategy to embed AI directly into space telecommunications and ISR (intelligence, surveillance, and reconnaissance) infrastructure, enabling intelligent radio frequency (RF) optimization, autonomous operations of payloads and satellites, and reconfigurable AI-enabled edge compute across its product lines. From mission-critical hardware to software, firmware, and waveforms, this acquisition positions CesiumAstro to further elevate its best-in-class digital processors and active phased array technologies. By embedding analytics and autonomy directly into our communications payloads and Element family of satellites, CesiumAstro is establishing a real-time planetary intelligence layer. Share "Our systems must operate in an increasingly congested and contested environment," said Trey Pappas, Chief Revenue Officer at CesiumAstro. "By embedding AI directly into our telecommunications payloads, we enable adaptive RF optimization, autonomous tasking, and real-time decision-making at the edge. This reduces latency, improves spectrum efficiency, and allows our customers to operate resilient, self-optimizing space networks at scale." AI-enabled workload orchestration allows satellites to determine which data should be processed on orbit and which should be routed to ground-based cloud and enterprise systems, creating a unified, distributed compute fabric spanning space and Earth. Following the acquisition, Vidrovr co-founder Joe Ellis is leading the integration of machine learning capabilities across CesiumAstro's product portfolio, with a focus on next-generation, AI-native space systems. "By embedding analytics and autonomy directly into our communications payloads and Element family of satellites, CesiumAstro is establishing a real-time planetary intelligence layer," said Ellis. "This layer will not only observe global activity, but interpret it, prioritize it, and route the necessary data intelligently across an expanding network of space-based assets." "What attracted me to CesiumAstro was the opportunity to operationalize AI inside production-scale space systems," continued Ellis. "Together, we're enabling distributed intelligence that connects space and terrestrial infrastructure. Our goal is to bring machine learning inference as close to the data as possible, on orbit, and quickly route the most important data to where it should be processed on Earth." The acquisition reinforces CesiumAstro's commitment to vertically integrated, scalable production of high-performance communications payloads and satellites for national security and commercial customers. By combining advanced RF hardware, software-defined architectures, and embedded AI, CesiumAstro delivers adaptive, mission-ready space systems designed for increasingly complex operational environments. Explore how CesiumAstro is integrating Vidrovr's technology in this Q&A with Joe Ellis: https://www.cesiumastro.com/joe-ellis-q-a About CesiumAstro CesiumAstro is a global leader in advanced connectivity solutions for space and defense, delivering next-generation systems that connect, detect, and defend across commercial, government, and national security missions. Its standardized product platforms span satellites, high-performance communications payloads, terminals, and advanced computing systems, all designed for scalable production and mission-ready deployment. CesiumAstro maintains complete vertical integration with in-house design, manufacturing, and testing capabilities certified to AS9100D and ISO 9001:2015 standards. Headquartered near Austin, Texas, the company operates additional facilities in Colorado, California, the United Kingdom, Germany, and Japan.