CesiumAstro
CesiumAstro makes satellite communications systems for defense and aerospace, including software-defined radios and phased array payloads. The company has raised $655M and employs 497 people across five countries.
The growth story
CesiumAstro grew from 88 to 497 employees between 2021 and 2026, raising $655M along the way, most recently a Series C in February 2026.
About
CesiumAstro produces integrated satellite communications hardware like multi-beam antennas and onboard processors, primarily for military and commercial aerospace customers needing adaptable orbital systems. Its vertically integrated manufacturing combines RF, digital processing, and satellite assembly to accelerate production.
The Series C-funded company operates internationally with teams in the US, UK, Germany, and Japan. Its headcount of 497 suggests rapid scaling since its 2017 founding, though exact growth rates aren't specified.
Founders and leadership
Engineering dominates CesiumAstro's workforce with 196 employees, reflecting its hardware focus. Leadership maintains a multinational footprint with operations spanning three continents, though specific executive backgrounds aren't provided.
Departments, and which ones grew
Headcount by function: Engineering 243 (+45% YoY), Operations 57 (+73% YoY), Information Technology 40 (+60% YoY), Quality Assurance 23 (+92% YoY), Human Resources 21 (+75% YoY), Business Development 18 (+29% YoY).
Talent flow
CesiumAstro recruits heavily from defense contractors, with 34 hires from Northrop Grumman and 28 from Lockheed Martin. Alumni frequently move to other aerospace startups like Anduril (8) and Saronic Technologies (7), though some join tech giants like Apple and Amazon.
Most common previous employers of CesiumAstro staff: Northrop Grumman (34), Lockheed Martin (28), Ball Aerospace (18), L3Harris Technologies (17), BAE (13), NI (National Instruments) (12). Former CesiumAstro employees most often moved to Anduril Industries (8), Saronic Technologies (7), Apple (5), Lockheed Martin (5), Amazon (4), BAE (4).
Alumni worth knowing
The CesiumAstro mafia
Four alumni-founded companies exist, including General Counsel Solutions and Broken Lance Partners, though all appear small with only 1-2 staff each.
4Janet Bawcom, was Vice President and General Counsel until 2025Zach Miller, was Director of Finance until 2024Leo Walter, was Senior Program Manager until 2025Luke Logan, was Radio Frequency Engineer until 2025Hiring now
Web traffic
Traffic mix: 17% direct, 63% search, 0% social, 2% paid.
What this company is made of
Most common skills at CesiumAstro: Microsoft Office (189), MATLAB (161), Leadership (144), Microsoft Excel (144), Project Management (135), Python (Programming Language) (131), Engineering (118), C++ (110).
Where the team actually sits
CesiumAstro people are concentrated in Texas, United States (129), Colorado, United States (79), California, United States (27), Denver Metropolitan Area (22). 6 offices on record.
Search footprint
CesiumAstro attracts about 413 organic search visits a month, traffic worth roughly $2K a month if bought through ads. It gained 43 ranking keywords and lost 35 in the last period.
What employees say
- Compensation
- 2.60 / 5
- Career opportunities
- 3.20 / 5
- Senior management
- 2.60 / 5
- Work-life balance
- 2.30 / 5
Frequently asked
CesiumAstro has 497 employees as of September 2026.
CesiumAstro has raised $655M in total, most recently a Series C round in February 2026.
The most common previous employers of current CesiumAstro staff are Northrop Grumman (34 people), Lockheed Martin (28 people), Ball Aerospace (18 people).
Former CesiumAstro employees most often move to Anduril Industries (8), Saronic Technologies (7), Apple (5).
At least 4 companies have a founder who previously worked at CesiumAstro, including General Counsel Solutions, Broken Lance Partners, LC Business Investing.
CesiumAstro attracts about 413 organic search visits a month, worth roughly $2K a month in equivalent ad spend.
The most common skills among CesiumAstro staff are Microsoft Office, MATLAB, Leadership, Microsoft Excel, Project Management.
CesiumAstro staff are concentrated in Texas, United States (129), Colorado, United States (79), California, United States (27).
CesiumAstro has about 243 people in Engineering, up 45% over the past year, as of September 2026.
CesiumAstro has about 57 people in Operations, up 73% over the past year, as of September 2026.
Computed from 374 current and 253 former CesiumAstro profiles, as of September 2026. Source: Crustdata.
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