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BlueYard Capital

Sr. Manufacturing Engineer - Solid Rocket Motor Production



San Francisco, CA, USA · El Segundo, CA, USA · California, USA · United States
Posted on Sunday, June 16, 2024

About Castelion

Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We’re designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

Sr. Manufacturing Engineer – Solid Rocket Motor Production

Castelion is seeking a mechanically minded and autonomously driven manufacturing engineer to lead day to day production of solid rocket motors, to include manufacturing processes like machining, propellant dispensing and casting, non-destructive evaluation, and mechanical assembly. This role will report directly to Castelion’s Head of Manufacturing and coordinate closely with other members of the engineering leadership team to eliminate roadblocks to achieving the company’s technical goals.


  • Ensure motor production capacity does not block progress on company goals. Take full ownership and initiative to do whatever is required to achieve this outcome.
  • Develop process and factory design to transition from development to production rates of 1,000s of units per year.
  • Develop and refine process documentation including build instructions, test procedures, safety standards, and mBOMs.
  • Create, maintain and communicate detailed plans and schedules
  • Work closely with supply chain to develop new and existing suppliers
  • Participate in design reviews to drive design for manufacturing (DFM)

Basic Qualifications

  • Bachelor’s degree in engineering discipline
  • 5+ years of manufacturing, fabrication, assembly or testing experience
  • Demonstrated direct or indirect leadership
  • Experience manufacturing integrated systems.
  • Ability to drive for and understand the fundamental reason for why a tool or piece of infrastructure is important to the company’s technical goals.
  • Experience managing suppliers for large parts and a willingness to get on site with vendors to solve issues and get delivery of parts on time

Preferred Skills and Experience

  • Experience in solid rocket motor fabrication
  • Experience with chemical dispensing
  • Experience with ordinance
  • Experience with NX/Teamcenter CAD/PDM
  • Hands on experience in metal fabrication
  • Experience in transitioning development process to production

Additional Requirements

  • Willing and able to work extended hours and/or weekends with minimal notification to meet critical deadlines leading up to major milestones.
  • Able to travel up to 30% on an ongoing basis

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, and the company offers three weeks of paid time off per year.

Leadership Qualities

Bias to Action and Creative Problem Solving. Desire and experience questioning assumptions in ways that lead to break through ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. Ability to personally resolve minor issues in development without requiring significant support.

High Commitment, High Initiative. A successful candidate will have a genuine passion for Castelion’s mission and consistently look for ways to contribute to the company’s technical goals and prevent hardware blockers. Ability to work in a fast paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity.

Clear Communicator. Proactively communicates blockers. Trusted in previous roles to be voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with stakeholders to achieve company-desired outcomes without compromising relationships. Emails, IMs and verbal interactions are logical, drive clarity, and detailed enough to eliminate ambiguity.

ITAR Requirements:

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.

Employment with Castelion is governed on the basis of 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.