# CesiumAstro

**Source:** https://www.startuphub.ai/startups/cesiumastro
**Profile type:** Startup

> CesiumAstro is a global leader in advanced connectivity solutions for space and defense, developing and manufacturing satellites, high-performance communications payloads, and advanced computing systems.

## About

CesiumAstro specializes in aerospace communication systems, developing satellites, mobile satellite communication terminals, multi-beam communication payloads, software-defined radios, and space communication systems for space, air, and ground missions. The company's full-stack, multi-mission hardware and software serve diverse commercial, government, and defense applications. CesiumAstro maintains complete vertical integration with in-house design, manufacturing, and testing capabilities.

## Key facts

- **Slug:** cesiumastro
- **Website:** https://cesiumastro.com
- **Location:** Austin, United States
- **Founded:** 2017-01-01
- **Employees:** 587
- **Operating status:** Active
- **Total funding:** $730M
- **Sectors / tags:** Aerospace, Defense, Telecommunications, SpaceTech, Satellite
- **Social:**
  - LinkedIn: https://www.linkedin.com/company/cesiumastro
  - Twitter: https://x.com/cesiumastro

## StartupHub.ai scores

- **Ahrefs DR:** 41/100
- **Effective DR:** 76/100
- **Agent Readiness:** C (60/100)
- **Site Speed:** 54/100
- **Data Trust:** 84/100

## Funding rounds

| Date | Round | Amount | Lead investors |
| --- | --- | --- | --- |
| 5 Nov 2026 | [Series D](https://www.startuphub.ai/investment_rounds/cesiumastro-series-d-2026) | $730M | [Janus Henderson](https://www.startuphub.ai/investors/janus-henderson) |

## Tech stack

Detected on cesiumastro.com, last scanned 2026-11-05.

- **Analytics:** Google Tag Manager
- **SEO:** Bitly
- **CMS / Builders:** Webflow
- **CDN:** Cloudflare
- **Video / media:** Vimeo, YouTube

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## Community reviews

Community reviews below were gathered from public sources into one place. Each quote is copied word for word and links to where it was posted.

- **Reddit r/SpacePolicy** | spacepolicy | 2026-11-05 | positive | highlighted endorsement
  > "CesiumAstro Secures $730 Million in Janus Henderson-Led Series D at a Valuation Above $4.5 Billion; Unveils Synchronicity Satellite Constellation Following Fully Successful Element-1 Mission."
  > Source: https://www.reddit.com/r/SpacePolicy/comments/1xovatw/cesiumastro_secures_730_million_in_janus/
- **Reddit r/jobboardsearch** | rrmdp | 2026-10-10 | mixed
  > "📢 Cesiumastro [HIRING] a Senior Test Engineer!. Company: Cesiumastro Location: Westminster, Colorado 📍 Date Posted: October 09, 2026 📅 Level: Senior 👵 Categories: #senior #test #engineer #fulltime"
  > Source: https://www.reddit.com/r/jobboardsearch/comments/1x2kdni/cesiumastro_hiring_a_senior_test_engineer/
- **Reddit r/jobboardsearch** | rrmdp | 2026-10-10 | mixed
  > "📢 Cesiumastro [HIRING] a Senior Rf Test Engineer!. Company: Cesiumastro Location: El Segundo, California 📍 Date Posted: October 01, 2026 📅 Level: Senior 👵 Categories: #engineer #senior #fulltime"
  > Source: https://www.reddit.com/r/jobboardsearch/comments/1x2art8/cesiumastro_hiring_a_senior_rf_test_engineer/
- **Reddit r/u/jenmartin_realestate** | jenmartin_realestate | 2026-09-22 | positive
  > "In 2026, aerospace and defense technology company CesiumAstro announced a major expansion of its Bee Cave operations. The company acquired nearly 270,000 square feet of additional space and announced approximately $500 million in investment over five years."
  > Source: https://www.reddit.com/r/u_jenmartin_realestate/comments/1wmv7av/what_if_one_of_austins_next_major_employment/
- **Reddit r/gatech** | Inge5925 | 2026-09-17 | mixed
  > "I’m also collecting resumes for CesiumAstro full time and intern positions. Come say hi!"
  > Source: https://www.reddit.com/r/gatech/comments/1wievsh/come_learn_about_space_policy_careers_bring_your/
- **Reddit r/Spaceexploration** | RealJoshUniverse | 2026-08-14 | positive
  > "CesiumAstro Acquires Jariet, Enhances Satellite Tech."
  > Source: https://www.reddit.com/r/Spaceexploration/comments/1vnvi9b/cesiumastro_acquires_jariet_enhances_satellite/
- **Reddit r/SpacePolicy** | spacepolicy | 2026-02-26 | positive
  > "CesiumAstro acquires Vidrovr to embed AI in communications systems."
  > Source: https://www.reddit.com/r/SpacePolicy/comments/1rfakzv/cesiumastro_acquires_vidrovr_to_embed_ai_in/
- **Reddit r/LakeTravisCurrent** | sdbrady5 | 2026-01-16 | positive
  > "CesiumAstro officially moving into the Hwy 71 property (satellites not semis), last weekend for Bee Cave on Ice, housing market analysis shows major divide between waterfront and non-waterfront, and Cooper's BBQ in Llano is worth the detour. New Neighbors: CesiumAstro Coming to Bee Cave After months of debate around the massive distribution center off Hwy 71, this update lands firmly in the best-case scenario column. Instead of hundreds of daily 18-wheelers, the property is now set to become the global HQ for CesiumAstro. That means satellites, not semis. CesiumAstro bu"
  > Source: https://www.reddit.com/r/LakeTravisCurrent/comments/1qe5n5h/lake_travis_weekend_cesiumastro_satellite_hq/