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BlueYard Capital

Senior Mechanical Technician



San Francisco, CA, USA · El Segundo, CA, USA · California, USA · United States
Posted on Sunday, June 23, 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 design, build, and test next generation weapon systems to give America and its Allies a definitive edge in defense capabilities.

Senior Mechanical Technician

Castelion is seeking a highly motivated and experienced technician to support the company’s development and manufacturing of hypersonic rockets and ultra-high performance thermal protection systems. The Senior Technician will assist in hardware integration and production. A successful candidate will be a self-starter who takes full ownership of the projects they’re given, is detail-oriented, and thinks creatively to solve technical problems. This role coordinates closely with the entire Castelion engineering team to eliminate roadblocks to achieving the company’s technical goals


  • Support advanced materials R&D, structures testing and hypersonic vehicle hardware integration
  • Follow engineering drawings, work orders, process documentation independently to accelerate builds and test programs
  • Perform preventative maintenance on Castelion manufacturing equipment
  • Preemptively and proactively eliminate blockers and relentlessly and creatively drive process improvements

Basic Qualifications

  • 5+ years experience
  • Demonstrated ability to: interpret engineering drawings, use of dimensioning tools, basic electrical wiring, chemical handling, and process safety. Extra consideration for candidates with experience with vacuum systems, welding, and gas handling.
  • Experience operating basic machining tools including drill presses, lathes, saws, and water jets. Extra consideration will be given for candidates with experience working with ovens, and vacuum furnaces.
  • Worked in a fast-paced, autonomously driven, and high ownership environment
  • Able to modify/design shop aids, jigs/fixtures on the floor to support any manufacturing operation.
  • Previous experience with PLC/HMI/SCADA and NC for manufacturing. Hands-on integration, calibration and operations experience with electromechanical systems. Familiarity and experience with power systems for building infrastructure (220V/480V).

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.