Castelion · 6 days ago
Sr. Manufacturing Engineer, Composites
Torrance, CA
Full-time
Onsite
Mid, Senior Level
3+ years expCastelion is bringing a new approach to defense development and production, focusing on short, iterative design cycles and modern manufacturing strategies. The Senior Manufacturing Engineer will define and scale in-house composites manufacturing processes, collaborating closely with engineering leadership to overcome challenges and influence manufacturing strategy.
AerospaceGovernmentManufacturingMilitaryNational Security
No H1B
U.S. Citizen OnlyHiring Manager
Andy R.
Responsibilities
Develop, mature and scale production process for Ceramic Matrixed Composites (CMCs)
Collaborate with Materials Engineering team to nurture engineering and technology road maps for full scale production
Identify, plan, and execute capital equipment, machine, and facility/layout definition to meet business needs
Develop and refine process documentation including build instructions, test and validation procedures, health and safety standards, and mBOMs
Create, maintain, and communicate detailed production plans and schedules
Work closely with supply chain to develop new and existing suppliers as needed
Design, develop and implement production tooling and equipment
Participate in design reviews to drive design for manufacturing (DFM)
Oversee introduction and implementation of new products and manufacturing capabilities
Analyze and resolve manufacturing issues and non-conformances
Develop, mentor, and train peers and colleagues
Qualification
Required
Bachelor's degree in mechanical, aerospace, or manufacturing engineering, or other technical degree
3+ years of composite manufacturing experience
Experience with operations/product line management
Demonstrated direct or indirect leadership
Proficiency in CAD/CAM software (NX preferred)
Experience in selection, procurement, and implementation/validation of manufacturing equipment
Must be willing to work extended hours and/or weekends as needed
Must be able to travel up to 10%
To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State
Preferred
Experience in filament winding, automated fiber placement and/or automated tape laying
Experience with Non-Destructive Testing/Inspection of composite components
Experience in qualification and acceptance testing of composite structural components
Working experience with capacity modeling, process mapping, Lean/Six Sigma and value stream mapping
Experience with Ceramic Matrix Composites
Experience in transitioning development processes to rate production
Benefits
All employees are granted long-term stock incentives as part of their employment as Castelion.
All employees receive access to comprehensive medial, vision, and dental insurance.
The company offers three weeks of paid time off per year.
Company
Castelion
Castelion is a defense tech company that applies modern hardware development and manufacturing processes to national security challenges.
51-200 employees
Funding
Current Stage
Growth StageTotal Funding
$469.61MKey Investors
Lightspeed Venture PartnersSilicon Valley BankAndreessen Horowitz
2025-12-05Series B· $350M
2025-01-29Series A· $70M
2025-01-29Debt Financing· $30M
Leadership Team
Bryon Hargis
Founder // CEO
Andrew Kreitz
Co-Founder and CFO
Recent News
2026-01-19
Tech Startups - Tech News, Tech Trends & Startup Funding
2025-12-09
Company data provided by crunchbase