--- title: 'Mechanical Harness Engineer at AST SpaceMobile' canonical: 'https://feeny.ai/job/mechanical-harness-engineer-ast-spacemobile-lanham-m6vrta2a1crm' type: 'job' last_seen: '2026-10-31' --- # Mechanical Harness Engineer at AST SpaceMobile - **Company:** AST SpaceMobile - **Location:** Lanham, MD - **Work type:** remote - **Posted:** 2026-05-27 - **Last confirmed live:** 2026-10-31 - **Apply:** https://ast-science.com/company/careers/?gh_jid=4700001005 ## Job description 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. Position Overview We are seeking a highly skilled and detail-oriented Mechanical Harness Engineer to join our dynamic team working on state-of-the-art Low Earth Orbit (LEO) satellite systems. In this role, you will design, develop, and integrate electrical harnesses that form the backbone of the satellite’s electrical system, ensuring reliable and efficient power and data transfer for successful missions. ## Key Responsibilities - 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. ## Qualifications Education: Bachelor’s or master’s degree in Mechanical Engineering, Aerospace Engineering, or a related field. Experience: A minimum of 3–5 years of experience in electrical harness design for aerospace or space applications. ## Preferred Qualifications - 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. Soft Skills - Strong interpersonal skills and proven ability to collaborate effectively within cross-functional teams. - Excellent written and verbal communication skills. - Analytical mindset with strong problem-solving abilities. - Ability to manage multiple projects and meet deadlines. - Meticulous attention to detail to ensure accuracy in documentation and design. Technology Stack - CAD tools: Autodesk Inventor, Fusion 360 PLM, and Vault - Familiarity with harness design standards and schematic capture tools. Physical Requirements - Ability to work in a standard office environment and use a computer for extended periods. - Ability to work in clean room production environment. - Occasional hands-on work in lab environments for testing and validation. This job description may not be inclusive to the duties and responsibilities listed. Additional tasks may be assigned to the employee from time to time or the scope of the job may change as needed by business demands. 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) ## Other roles at AST SpaceMobile - [Radiation Assurance Engineer](https://feeny.ai/job/radiation-assurance-engineer-ast-spacemobile-barcelona-mwqddbmbpcaa) — Barcelona, Spain - [Data Engineer](https://feeny.ai/job/data-engineer-ast-spacemobile-riga-a4106z5k9fv4) — Riga, Latvia - [Sr. Principal Device Validation Engineer](https://feeny.ai/job/sr-principal-device-validation-engineer-ast-spacemobile-dallas-e3rfdes9enr0) — Dallas, TX - [Executive Administrative Assistant](https://feeny.ai/job/executive-administrative-assistant-ast-spacemobile-miami-f4hp8kdc3hw7) — Miami, FL - [Assoc Electrical Software Test Engr Part Time](https://feeny.ai/job/assoc-electrical-software-test-engr-part-time-ast-spacemobile-lanham-5tc3ttjrbxz0) — Lanham, MD - [Principle Systems Engineering- Software](https://feeny.ai/job/principle-systems-engineering-software-ast-spacemobile-dallas-pppwznbatsef) — Dallas, TX - [Senior Director, Program Delivery](https://feeny.ai/job/senior-director-program-delivery-ast-spacemobile-dallas-a86x62ftrfzx) — Dallas, TX - [Director, Technical Project Delivery](https://feeny.ai/job/director-technical-project-delivery-ast-spacemobile-dallas-ck7aqrrxrjvg) — Dallas, TX - [RF Test Engineer](https://feeny.ai/job/rf-test-engineer-ast-spacemobile-midland-vgd3xgxtw9rq) — Midland, TX - [Principal Gateway Engineer](https://feeny.ai/job/principal-gateway-engineer-ast-spacemobile-dallas-ssbaxscfm2pw) — Dallas, TX