Quality Supervisor

Location

Initially Santa Fe Springs, CA; relocating to Carson, CA (On‑Site)

Quality

Quality Manager

Full‑Time, Exempt

Woojin IS America, Inc. (WISA), headquartered in Santa Fe Springs, CA, is a fast‑growing manufacturer specializing in electric equipment for rolling stock and light rail vehicles. We proudly serve North American customers with advanced technologies that deliver safe, reliable, and long‑lasting transportation equipment.

The Quality Supervisor ensures that all products, documentation, and services meet established quality standards through inspections, testing, and compliance checks. This role upholds WISA’s high‑quality standards to maintain customer satisfaction and strengthen the company’s reputation. The Quality Supervisor oversees daily quality operations, leads a team of inspectors, and collaborates closely with cross‑functional teams to ensure compliance with customer, company, and regulatory requirements.

• Lead and manage a team of quality and receiving inspectors, providing training, mentorship, and performance evaluations.
• Assign and oversee daily work assignments, ensuring quality staff collaborate effectively toward shared goals.
• Serve as both a hands‑on contributor and a team leader.
• Monitor employee performance, attendance, and discipline as needed.

• Develop and implement quality control procedures to maintain production and regulatory standards.
• Oversee inspection and testing of products to ensure compliance with specifications, including customer and internal hold points.
• Document inspection results, maintain quality metrics, and analyze data to identify trends and opportunities for improvement.
• Conduct regular audits of processes, production lines, and documentation for compliance with WISA standards.
• Prepare and present reports summarizing audit and inspection outcomes and highlight improvement areas.

• Ensure adherence to industry regulations, customer specifications, and company standards.
• Support internal and external audits (customer and ISO 9001).
• Prepare and complete FAI (First Article Inspection) packages and Car History Books.
• Coordinate MRB (Material Review Board) meetings and manage non‑conformance processes.
• Possess authority to stop production when quality or process standards are not met.

• Analyze quality data to identify root causes and lead corrective and preventive actions (CAPA).
• Support training of quality staff on QMS systems, company procedures, and safety/ethics policies.
• Track and monitor Quality KPIs and implement actions to improve results.

• Bachelor’s degree in quality management, engineering, or a related field.

• Minimum 5 years of experience in quality assurance or control, including supervisory experience in manufacturing (preferably rail, heavy equipment, or electrical systems).

• Six Sigma, ASQ Certified Quality Engineer (CQE), or ISO 9001 Lead Auditor certification.

• Proficiency in quality control software, data analysis tools, and Microsoft Office.
• Strong understanding of ISO 9001 QMS principles.
• Ability to read blueprints, technical drawings, and product specifications.
• Knowledge of inspection tools and measurement methods (calipers, gauges, micrometers, etc.).

• Strong leadership and communication skills.
• High attention to detail and analytical ability.
• Proven problem‑solving skills and accountability.
• Reliable, ethical, and team oriented.

• On‑site role within a manufacturing environment; may require walking the production floor regularly.
• Position may involve coordination across shifts and facilities (Santa Fe Springs and Carson).

• Salary Range $70,000 – 100,000
• Health Insurance (Medical, Dental, Vision, STD, Critical Illness)
• Paid Time Off (Vacation, Sick, Bereavement), Paid Holidays
• Retirement Plan (coming soon)