AST SpaceMobile

Delivers global satellite-based mobile broadband

Environmental Test Engineer

Spacecraft & Launch Vehicle SystemsConfirmed live in the last 24 hours

Full-timeHomestead, FL, USANo salary listedIn-person

About the Job

Requirements

A bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related field is required.
At least 3 years of experience in environmental testing is required; aerospace or defense experience is preferred.
Hands-on experience with electrodynamic shakers, thermal-vacuum chambers, accelerometers, thermal sensors, and data acquisition systems is required.
Knowledge of vibration and thermal environments relevant to spaceflight hardware is required.
Familiarity with instrumentation setup, calibration, and data analysis is required.
Ability to work in cleanroom environments and follow contamination control procedures is required.
Strong written and verbal communication skills and analytical and problem-solving abilities are required.
Ability to work in a fast-paced, collaborative environment with strict deadlines is required.
Ability to work shifts and extended hours during test campaigns may be required.
Physical requirements may include lifting up to 50 pounds and working in confined or high-vacuum areas.

Responsibilities

Develop and execute test plans and procedures for vibration testing, including sine, random, and shock tests, and for thermal-vacuum 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.
Monitor tests in real time and troubleshoot to ensure successful completion of test campaigns.
Ensure testing complies with relevant standards, including MIL-STD-1540, NASA GEVS, and 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 containing data analysis, plots, and pass/fail criteria.
Maintain equipment and ensure test facilities are operationally ready.
Participate in continuous improvement activities to improve test efficiency, safety, and reliability.

Desired Qualifications

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

AST SpaceMobile and our global partners are building the first and only space-based cellular broadband network to be accessible by standard smartphones. Called SpaceMobile, this ultra-powerful network is being designed to provide connectivity at 4G/5G speeds everywhere on the planet – on land, at sea and in flight.

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 the Company

AST SpaceMobile

Delivers global satellite-based mobile broadband

AST SpaceMobile builds a satellite-based broadband network that can work directly with ordinary mobile devices by partnering with major mobile network operators to extend global coverage. The system uses satellites that communicate with phones through operator-backed services to provide data without relying only on terrestrial towers, with revenue coming from service agreements and data usage fees. It differentiates itself by pursuing direct-to-device satellite cellular service through collaborations with operators to reach the many unconnected subscribers worldwide. Its goal is to deliver seamless global mobile broadband coverage and close the connectivity gaps for billions of mobile users.

Company size: 1,001-5,000
Company stage: IPO
Headquarters: Midland, TX
Founded: 2017

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