Mechanical Engineer II- Spencer Composites
X-Bow Systems$125,000–$150,000/yrSacramento, CAFull timePosted 1w agoStill open, checked every night- ITAR / US person
- Secret clearance
How this pay compares
This posting states $125k–$150k a year. Open mechanical engineer jobs in California post a median of $158k a year, the middle half $128k–$179k, across 261 jobs that state their pay, so this one is within the middle half of what they post.
Mechanical engineers in California: pay by town and employer
About the job
Job Title: Mechanical Engineer II
Location: Onsite, Sacramento, CA
Job Type: Full-Time
About Us: Spencer Composites is a leader in advanced composite solutions, specializing in the design and manufacturing of high-performance composite structures for aerospace, defense, and industrial applications. Our team is dedicated to innovation and precision, delivering cutting-edge solutions to meet the unique needs of our clients.
About the Role: We are seeking a talented and driven Mechanical Engineer to join our team in Sacramento. In this role, you will support the design, analysis, and manufacturing of composite structures and tooling. You will work closely with a multidisciplinary team to ensure the successful delivery of high-quality composite solutions.
Key Responsibilities
- Design, analyze, and test composite structures, tooling, and fixtures.
- Collaborate with cross-functional teams to develop innovative solutions for composite manufacturing processes.
- Specify and scope components such as pumps, mixers, heat exchangers, ovens, and precision flow meters.
- Utilize SolidWorks CAD and PDM (or equivalent) for design and documentation.
- Perform stress to ensure optimal performance and reliability.
- Support hands-on assembly, troubleshooting, and commissioning of composite systems.
- Ensure compliance with environmental and safety standards.
- Hands-on problem solving and assembly and testing of prototypes within an R&D shop environment.
Required Skills & Qualifications
- Bachelor's degree or higher in Mechanical Engineering or equivalent.
- Minimum 5 years' experience with emphasis on design and fabrication of mechanical systems
- 5+ years of experience with SolidWorks CAD and PDM (or equivalent).
- Experience designing and testing custom tooling and fixtures.
- Strong analysis skills, ranging from basic calculations to advanced simulations (stress, fluid flow, thermal, etc.).
- Demonstrated hands-on aptitude for electro/mechanical assembly and troubleshooting.
- Experience working in multidisciplinary teams of ~5 engineers.
- Must be a U.S. Person as defined by § 120.62 of the ITAR.
Preferred Qualifications
- Experience with composite materials and manufacturing processes.
- Ability to obtain and maintain a Secret clearance.
From X-Bow Systems's job posting, checked 10 Nov 2026. The employer's own page is the final word on requirements and availability.
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About X-Bow Systems
Designs and builds solid rocket motors and their energetics for launch vehicles and national defense.
Pay on its listings: stated per posting
How it pays: Paid as an employee on X-Bow Systems's own payroll, as each posting states.
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