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Infographic showing various Principal Systems Engineer job openings at Associate Systems in the United States as of August 2026, with employment types broken down into 62% Full Time, and 38% Contract. Highlights an 100% Physical job distribution.

Satellite Mechanical Propulsion Engineer with Security Clearance

Associates Systems LLC

San Jose, CA • On-site

$125K - $150K/yr

Other

Re-posted 24 days ago

Job description

We are seeking a Mechanical / Propulsion Engineer with a strong hands-on background in spacecraft hardware and propulsion system development- Satellites preferred. This role blends mechanical design, propulsion assembly and testing, spacecraft layout/architecture, and cross-functional collaboration across thermal, structural analysis, and manufacturing teams—with a strong emphasis on AIT execution and spacecraft hardware integration. The ideal candidate thrives in fast-paced, hardware-focused environments and enjoys working from concept through fabrication, test, and flight. Key Responsibilities Execute hands-on assembly and testing of propulsion systems, including tubing, heaters, sensors, valves, and other fluid-system hardware. Develop 3D CAD models, detailed part/assembly drawings, tolerance analyses, and integrated layouts optimized for tightly constrained spacecraft environments. Design spacecraft hardware such as brackets, enclosures, fluid-routing solutions, thermal/mechanical interfaces, and structural components. Generate models, documentation packages, and work instructions to support AIT (Assembly, Integration & Test) for propulsion and spacecraft mechanical hardware. Collaborate closely with structural, thermal, analysis, and manufacturing teams to iterate designs through the full engineering lifecycle—from early concepts to flight-ready hardware. Support propulsion and mechanical test campaigns, including setup, execution, data review, troubleshooting, and documentation. Apply aerospace standards—including range safety guidelines and RPUG requirements—to ensure compliance, safety, and mission success. Contribute to process development, continuous improvement, and flight-readiness maturation for mechanical and propulsion subsystems. Desired Skills & Experience Hands-on experience with propulsion system build-up and testing, including fluid systems, heaters, wiring/sensors, or valve integration. Mechanical design proficiency using modern CAD tools; experience with GD&T, tolerance stack-ups, and drawing release workflows. Familiarity with spacecraft packaging constraints, tight-tolerance interfaces, and multidisciplinary integration challenges. Working understanding of propulsion-system fundamentals, thermal behavior, or fluid dynamics is a plus. Knowledge of aerospace standards (range safety, RPUG, etc.) or prior experience working with flight hardware. Strong documentation skills and the ability to produce clear, concise technical communication. Effective collaborator in hands-on, cross-functional engineering environments; capable of taking hardware from bench to flight. Education & Work Experience BS in Mechanical Engineering, Aerospace Engineering, or related field. 3+ years relevant experience. 3 to 5 years of on-the-job engineering experience. Desire to contribute to a highly hands-on engineering setting involving design, integration, testing, and flight hardware ownership. Compensation: Annual Base Salary Range: $125,000 - $150,000/per year

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