On-the-Floor Manufacturing Engineer, Mechanical Assembly

Castelion Corporation; Torrance (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

Castelion Corporation in Torrance, CA is seeking a Manufacturing Engineer, Mechanical Assembly to develop, validate, and stand up the processes and tooling that turn mechanical assembly designs into repeatable, high-rate production.

You’ll spend substantial time on the floor designing fixtures, releasing work instructions, training operators, and driving process validation from first article through full-rate production.

Qualifications

• Bachelor’s degree in mechanical, manufacturing, or aerospace engineering.
• 3+ years of experience developing or validating manufacturing processes in production, manufacturing, or experimental settings.
• Hands-on tooling and fixture design experience, including fixture fabrication and qualification.
• Experience training or supervising production operators.
• Strong APQP framework knowledge (Control Plans, DFMEA, PFMEA).
• Past involvement in high-speed/high-output production environments.
• Experience with automation, robotics, and flexible manufacturing systems.
• Proficiency with Confluence and JIRA for collaboration and documentation.
• Excellent written and verbal communication and teamwork abilities.

Responsibilities

• Develop, validate, and release manufacturing processes, work instructions, and process specifications for mechanical assembly operations.
• Design, procure, and qualify production tooling, fixtures, and manufacturing aids for in-house production.
• Lead process validation activities—first article inspections, process capability studies, PFMEA—to qualify new processes.
• Train and certify operators on new and revised processes, owning workforce ramp-up.
• Establish process controls, manufacturing standards, and inspection requirements for consistent quality.
• Partner with design engineering to provide DFM feedback and resolve build issues surfaced during production.
• Own real-time troubleshooting on the assembly floor, driving containment and root-cause corrective actions.
• Support transition of processes from engineering development to repeatable production, including workstation design and line layout.
• Collaborate cross-functionally with design, quality, supply chain, procurement, and program management to meet performance, schedule, and cost objectives.

Skills

Tooling design

Fixture design

Operator training

APQP knowledge

High-speed production

Automation & robotics

Communication skills

Adaptability

Manufacturing experience

Education

Bachelor’s degree in mechanical engineering, manufacturing engineering, or aerospace engineering

Tools

Confluence

JIRA

Job description

Castelion Corporation in Torrance, CA is seeking a Manufacturing Engineer, Mechanical Assembly to develop, validate, and stand up the processes and tooling that turn mechanical assembly designs into repeatable, high-rate production.

You’ll spend substantial time on the floor designing fixtures, releasing work instructions, training operators, and driving process validation from first article through full-rate production.