Mechanical Harness Engineer

AST SpaceMobile

Mechanical Harness Engineer designing and integrating electrical harnesses for LEO satellite systems at AST SpaceMobile. Collaborating with engineers to ensure reliable power and data transfer for missions.

Posted 5/28/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

Assembly

About the role

Key responsibilities & impact

Design and develop electrical harnesses for LEO satellite systems, considering mission requirements, space constraints, thermal considerations, and EMC requirements.
Collaborate with system engineers, electrical designers, and mechanical engineers to define harness specifications and design constraints.
Create and manage detailed harness drawings, including cable/wire routing, connector selection, splicing, and termination plans using CAD tools.
Ensure compliance with industry standards (e.g., IPC-WHMA-A-620, ECSS-E-HB-10-10) and space agency requirements.
Conduct analyses and simulations to verify mechanical integrity, electrical performance, and environmental resistance.
Support fabrication, assembly, and testing of harnesses, providing guidance to ensure quality and adherence to specifications.
Perform in-house testing and validation, including continuity checks, insulation resistance, and signal integrity testing.
Collaborate with suppliers to source space-qualified components while maintaining cost-effectiveness and schedule adherence.
Document all design and testing activities, including procedures, reports, and design changes.
Participate in design reviews and cross-functional meetings, providing technical insights for optimization.
Assist in troubleshooting harness-related issues during integration, testing, and in-orbit operations.
Stay current with advancements in harness technologies and explore opportunities for innovation.

Requirements

What you’ll need

Bachelor’s or master’s degree in Mechanical Engineering, Aerospace Engineering, or a related field.
A minimum of 3–5 years of experience in electrical harness design for aerospace or space applications.
Experience with high-reliability harness design for small satellites, CubeSats, or nano/microsatellites.
Knowledge of space-rated materials and manufacturing processes.
Familiarity with thermal analysis and thermal management techniques.
Previous work with major aerospace agencies or satellite manufacturers.

Benefits

Comp & perks

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.

ATS Keywords

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Hard Skills & Tools

electrical harness designcable routingconnector selectionsplicingtermination plansthermal analysissignal integrity testingcontinuity checksinsulation resistancedesign documentation

Soft Skills

collaborationtroubleshootingtechnical insightsguidanceinnovation

Certifications

IPC-WHMA-A-620ECSS-E-HB-10-10