---
title: 'Environmental Test Engineer at AST SpaceMobile'
canonical: 'https://feeny.ai/job/environmental-test-engineer-ast-spacemobile-homestead-florida-yvc5n103e220'
type: 'job'
last_seen: '2026-09-12'
---

# Environmental Test Engineer at AST SpaceMobile

- **Company:** AST SpaceMobile
- **Location:** Homestead Florida, United States
- **Posted:** 2025-09-05
- **Last confirmed live:** 2026-09-12
- **Apply:** https://ast-science.com/company/careers/?gh_jid=4605923005

## Job description

AST SpaceMobile is building the first and only global cellular broadband network in space to operate directly with standard, unmodified mobile devices based on our extensive IP and patent portfolio and designed for both commercial and government applications. Our engineers and space scientists are on a mission to eliminate the connectivity gaps faced by today’s five billion mobile subscribers and finally bring broadband to the billions who remain unconnected.

Job Summary:

The Environmental Test Engineer (Vibration and TVAC) is responsible for planning, executing, and documenting mechanical and thermal-vacuum tests to verify the environmental durability of spacecraft components, subsystems, and full systems. This engineer ensures test campaigns meet customer and program requirements for qualification and acceptance.

Key Responsibilities:

- Develop and execute test plans and procedures for vibration (sine, random, shock) and thermal vacuum (TVAC) testing.
- Set up, calibrate, and operate test equipment including shakers, thermal chambers, vacuum chambers, and data acquisition systems.
- Collaborate with design, manufacturing, and systems engineering teams to define environmental test requirements.
- Perform real-time test monitoring and troubleshooting to ensure successful completion of test campaigns.
- Ensure all testing complies with relevant standards (e.g., MIL-STD-1540, NASA GEVS, ECSS).
- Coordinate with technicians to configure test setups, instrumentation, and test article fixturing.
- Lead or support root cause investigations for test anomalies or failures.
- Generate detailed test reports including data analysis, plots, and pass/fail criteria.
- Maintain equipment and ensure test facilities meet operational readiness.
- Participate in continuous improvement activities to enhance test efficiency, safety, and reliability.

Required Qualifications:

- Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or related field.
- 3+ years of experience in environmental testing, preferably in aerospace or defense.
- Hands-on experience with electrodynamic shakers, TVAC chambers, accelerometers, thermal sensors, and DAQ systems.
- Strong knowledge of vibration and thermal environments relevant to spaceflight hardware.
- Familiarity with instrumentation setup, calibration, and data analysis.
- Ability to work in cleanroom environments and follow contamination control procedures.
- Excellent written and verbal communication skills.
- Strong analytical and problem-solving abilities.

Preferred Qualifications:

- Experience with software such as LabVIEW, TestStand, MATLAB, or Python for test automation and data analysis.
- Experience supporting launch vehicle or satellite environmental qualification campaigns.
- Knowledge of industry standards: MIL-STD-810, MIL-STD-1540, ECSS-E-ST-10-03C, etc.
- Familiarity with thermal modeling and simulation tools.

Working Conditions:

- May involve shift work and extended hours during test campaigns.
- Physical requirements may include lifting up to 50 lbs and working in confined or high-vacuum areas.
- Must be able to work in a fast-paced and collaborative environment with strict deadlines.

AST SpaceMobile is an Equal Opportunity, at will Employer; employment is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

## About AST SpaceMobile

## Company Overview
- **One-liner**: AST SpaceMobile is building the first and only space-based cellular broadband network accessible directly by standard, unmodified smartphones.
- **Entity Type**: Public (Nasdaq: ASTS)
- **Headquarters**: Midland, Texas, USA
- **Founded**: 2017
- **Founders**: Abel Avellan

## Core Business
- **Primary industry**: Space-based telecommunications / Satellite broadband
- **Target customers**: B2B (mobile network operators), B2C (indirectly through MNOs), and government/defense agencies
- **Mission**: To eliminate connectivity gaps faced by today’s nearly six billion mobile subscribers and bring broadband to the billions who remain unconnected using a space-based cellular network.

## Products & Services
- **[SpaceMobile Network]**: A space-based cellular broadband network that delivers 4G/5G connectivity directly to standard smartphones without any hardware modifications, apps, or software updates.
- **[BlueBird Satellites]**: The company’s commercial satellite constellation, designed to provide full broadband coverage globally. BlueBird satellites are among the largest commercial communications arrays in low Earth orbit.
- **[BlueWalker 3]**: The prototype satellite used to demonstrate world-first voice, 5G, and video calls from space to ordinary phones.
- **[Government & Defense Solutions]**: Tailored connectivity for tactical and public safety applications (e.g., FirstNet tests, government contracts).

## Market Standing
- **Valuation/Market Cap**: Market capitalization exceeded $8 billion as of August 2024 (stock price ~$38.60). More recent figures are not publicly available but the company has raised over $2 billion as of Q2 2025.
- **Key Metric (Total Funding)**: Over $2 billion raised (debt and equity) as of Q2 2025.
- **Notable Investors/Partners**: Vodafone, Rakuten, American Tower, Samsung Next, Cisneros, Google (product partnership), AT&T, Verizon, FirstNet Authority.
- **Growth Signals**:
  - Partnerships with nearly 60 mobile network operators covering ~3 billion combined subscribers.
  - Successfully completed first VoLTE voice calls, video calls, and 5G data connections using standard smartphones via satellite.
  - First public safety tests on FirstNet (Jan 2024) and first activation for government defense use cases (June 2025).
  - Commercial contract with Vodafone through 2034 for Europe and Africa.
  - 578 employees as of 2024; expanding manufacturing and office footprint globally.

## Competitive Advantages
- **First-mover**: Only company offering direct-to-smartphone satellite broadband with no specialized hardware or software required.
- **Patent Moat**: Over 3,800 patents and pending claims protecting proprietary technology.
- **MNO Integration**: Deep partnerships with major global operators enable seamless integration with existing terrestrial networks.
- **Satellite Scale**: BlueBird satellites feature large phased-array antennas (BlueWalker 3 array is 693 sq ft), providing a field of view over 300,000 sq miles.

## Strategic Focus
- **Constellation Deployment**: Rapidly launching and operationalizing the BlueBird satellite fleet to start generating significant commercial revenue.
- **Global Coverage Expansion**: Targeting full service across multiple continents, with a focus on remote and underserved regions.
- **Government & Defense**: Broadening contracts for secure, tactical connectivity.
- **Technology Advancement**: Continued R&D on next-generation satellite capabilities and network optimization.

## Why Work Here
- **Culture**: Fast-growing company with a startup mindset; employees are encouraged to wear many hats and tackle meaningful challenges.
- **Global Presence**: Offices in Midland (TX), Homestead (FL), Miami (FL), Lanham (MD), Tel Aviv, Barcelona, Edinburgh, Hyderabad, and other locations.
- **Impact**: Opportunity to work on a historic transformation in global connectivity, directly connecting billions of people.
- **Perks & Environment**: Nearly 500,000 sq ft of manufacturing and office facilities; emphasis on innovation, autonomy, and cross-disciplinary collaboration.
- **Career Growth**: Open positions listed on Greenhouse; values proactive, passionate innovators.

## Sources
1. [AST SpaceMobile Official Website](https://ast-science.com)
2. [AST SpaceMobile Company Page](https://ast-science.com/company/)
3. [AST SpaceMobile Careers Page](https://ast-science.com/company/careers/)
4. [AST SpaceMobile Investor Relations](https://investors.ast-science.com/)
5. [Wikipedia – AST SpaceMobile](https://en.wikipedia.org/wiki/AST_SpaceMobile)

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