Castelion

Overview

Castelion is rapidly developing advanced defense systems and is looking for a Mechanical Assembly Lead to oversee hands-on assembly and integration activities for aerospace and defense hardware at their Torrance, CA facility. This role offers significant ownership and collaboration with a world-class team in a fast-paced environment.

Responsibilities

• Lead daily mechanical assembly and integration activities, assigning work and coordinating priorities across the assembly team.
• Train, mentor, and provide technical direction to assemblers and technicians while promoting a culture of ownership, safety, and quality.
• Interpret and execute engineering drawings, models, bills of material, assembly instructions, travelers, and controlled procedures.
• Perform and oversee precision mechanical assembly using hand tools, torque tools, power tools, fixtures, and fabrication equipment.
• Coordinate with engineering to resolve build issues, provide manufacturability feedback, and implement design or process improvements.
• Plan labor, tooling, materials, and work-cell readiness to maintain an efficient and predictable assembly workflow.
• Verify dimensions, interfaces, torque values, fit, finish, and workmanship using appropriate inspection and metrology equipment.
• Document build status, nonconformances, rework, test results, and completed work in accordance with quality-system requirements.
• Support integration and functional testing of mechanical assemblies and ensure hardware is properly configured for downstream operations.
• Maintain clean, organized, and appropriately controlled work areas, including cleanroom or contamination-controlled environments when required.
• Drive continuous improvement in safety, quality, throughput, standard work, tooling, and assembly processes.

Requirements

• 3+ years of hands-on experience in mechanical assembly, integration, manufacturing, or field.
• 1+ years of experience leading, mentoring, or coordinating the work of an assembly or production team.
• Ability to read and interpret engineering drawings, GD&T, CAD models, bills of material, work instructions, and technical documentation.
• Proficiency with precision hand tools, torque tools, power tools, fixtures, and basic measurement and inspection equipment.
• Strong understanding of mechanical interfaces, fasteners, torque application, alignment, sealing, and contamination control.
• Ability to work effectively with engineering, quality, supply chain, and operations teams in a fast-paced environment.

Additional Information

• This is a full-time position located at the Torrance, CA facility.
• This position may require access to classified information or restricted U.S. Government sites.