Mechanical Engineer

Castelion Corporation•Torrance, CA

48d

About The Position

Castelion is seeking a hands-on, high-agency Mechanical Engineer excited to take ownership of real flight hardware and grow alongside a fast-moving team. You will work on the design, fabrication, and integration of critical flight structures and mechanisms across Castelion's hypersonic vehicles. This role is ideal for someone who thrives in fast-paced environments, learns quickly, and wants to see their work go from concept to flight in weeks-not years. You'll be empowered to take on meaningful responsibilities immediately. This is a rare opportunity to grow as a full-stack engineer while working on hardware that matters.

Requirements

Bachelors degree in Mechanical Engineering with 2+ years of professional ME experience, preferably in aerospace, automotive, or hardware-focused industries.
CAD design of mechanical components (e.g., SolidWorks, NX, or similar)
Understanding of statics, dynamics, and thermal principles
Eager to take on responsibility, contribute in a hands-on environment, and learn from experience
Thoughtful about part numbers, materials, tolerances, and documentation-even when moving quickly
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.
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.
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.
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.

Responsibilities

Support the design, analysis, and build of mission-critical systems including composite tanks, separation mechanisms, and actuators.
Contribute to CAD models, run basic analysis, and work with technicians and leads to integrate and test hardware.
Contribute to four-week subsystem prototype cycles.
Participate in design reviews, integrate test feedback, and help drive continuous improvement based on real-world data.
Work closely with leads and technicians during builds.
Learn how to write travelers, build notes, and quality documentation.
Gain exposure to the full product lifecycle in a highly accelerated environment.