Full-Time

Staff Flight Software Engineer

CesiumAstro

CesiumAstro

501-1,000 employees

Designs satellite communications hardware and software

Compensation Overview

$158k - $189k/yr

+ Stock options

No H1B Sponsorship

Westminster, CO, USA

In Person

Bachelor's, Master's

Category
Software Engineering (1)
Required Skills
Software Testing
Quality Assurance (QA)
C/C++

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Requirements
  • A Bachelor of Science degree requires a minimum of 8 years of industry experience in software development, or a Master of Science degree requires a minimum of 7 years.
  • Experience developing multiple flight software systems.
  • Hands-on development and troubleshooting experience with software systems and hardware such as motors and power distribution units.
  • Programming experience in C or C++.
  • Experience interfacing a variety of open-source software to create an integrated system.
  • Familiarity with software configuration management tools, defect tracking tools, and peer review.
  • A strong understanding of multithreaded applications and resource management.
  • Excellent written and verbal communication skills.
Responsibilities
  • Design and implement software to build and integrate mission systems including satellites, ground stations, and mission operations centers.
  • Architect, design, develop, code, test, debug, and document space system software.
  • Act as a subject matter expert on space software systems throughout the organization.
  • Review code and system designs.
  • Analyze code for efficiency, stability, and scalability.
  • Integrate and validate new product designs.
  • Provide expert guidance to direct product design.
  • Support software quality assurance and optimize input/output performance.
  • Provide post-production and in-orbit customer support.
  • Interface with hardware design and development engineers.
  • Mentor junior team members.
  • Assess third-party and open-source software.
  • Develop software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, testing, qualification, and in-orbit support.
  • Present engineering design review materials to customers and the executive team.
  • Participate in proposal-writing efforts.
Desired Qualifications
  • Experience with products for aerospace applications.
  • Experience with satellite operations or mission data systems, including COSMOS.
  • Experience with NASA's cFS flight software framework.
  • Knowledge of reading electronics schematics and component data sheets.
  • Experience with ARM processors and fully featured microcontrollers.
  • Experience designing and developing a Software Development Kit.

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

$678.2M

Headquarters

Austin, Texas

Founded

2017

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Simplify Jobs

Simplify's Take

What believers are saying

  • April 21, 2026 MDA awarded CesiumAstro a GMD IFICS contract for Skylark.
  • March 6, 2026 announced $500 million Bee Cave expansion signals customer demand and production scaling.
  • February 2026 settlement cleared the headquarters site, reducing legal friction around Texas manufacturing growth.

What critics are saying

  • AnySignal trade-secret litigation from 2024 still clouds CesiumAstro's competitive playbook and hiring.
  • Bee Cave buildout through August 2026 delays revenue if equipment installs, permits, or grant milestones slip.
  • A failed integration of Vidrovr, Jariet, and 1Aardvark would fracture the full-stack strategy.

What makes CesiumAstro unique

  • CesiumAstro vertically integrates phased arrays, RF-SoCs, mission software, and satellites after 2026 acquisitions.
  • Its Bee Cave campus targets domestic manufacturing of Element and Skylark for defense customers.
  • The company sells software-defined, electronically steered systems for contested space and airborne missions.

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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%
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.

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]