Job Description

Job Title: Production Supervisor

Location: Carson, CA (Santa Fe Springs, CA for first 6 months)

Reports To: Head of Operations – Carson facility

Department: Production

Employment Type: Full-Time / Exempt

About Us

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.

About the Role

The Production Supervisor is responsible for overseeing day-to-day rolling stock and light rail manufacturing operations, ensuring safety, quality, productivity, and employee engagement within assigned production areas. This position plays a critical role in meeting customer commitments, optimizing resources, and driving continuous improvement across processes and teams.

Key Responsibilities

Production Supervision

• Plan and direct daily production activities for railcar refurbishment, overhaul, and modification projects , schedules, staffing and priorities to meet delivery and quality targets.
• Monitor progress against established goals, identifying variances and developing recovery plans for schedule, cost, and quality performance.
• Ensure efficient use of manpower, machines, and equipment while maintaining a high standard of product quality.
• Coordinate production activities with cross-functional teams such as Engineering, Quality, Purchasing, and Warehouse.

Safety and Compliance

• Enforce all safety protocols and ensure employees are properly trained and certified.
• Conduct regular safety audits, maintain a clean and organized work environment, and drive compliance with 5S principles.
• Promote a culture of zero incidents through proactive hazard identification and corrective actions.

People Leadership

• Supervise, coach, and develop production staff to achieve individual and team performance goals.
• Conduct regular performance evaluations in coordination with HR, providing constructive feedback and development plans.
• Foster a positive, motivated, and collaborative work environment that supports employee engagement and retention.

Continuous Improvement

• Partner with Methods, Engineering, and Quality teams to enhance process efficiency, work cell optimization, and overall throughput.
• Lead daily production meetings to review safety, quality, material availability, and improvement opportunities.
• Implement continuous improvement initiatives to increase productivity, reduce waste, and strengthen quality.

Reporting and Analysis

• Track and report key performance indicators (KPIs), including productivity, efficiency, and labor utilization.
• Review and approve employee time reports to ensure accurate project and cost tracking.
• Support long-term production planning and capacity forecasting.

Qualifications

• High school diploma required; Associate or Bachelor’s degree in Manufacturing, Industrial Engineering, or Business preferred.
• 3–5 years of supervisory experience in rail manufacturing or production environment.
• Strong leadership, communication, and interpersonal skills with the ability to motivate and manage diverse teams.
• Excellent problem-solving and analytical abilities in a fast-paced environment.
• Working knowledge of production processes, quality standards, and ERP or manufacturing software systems.
• Commitment to safety, quality, and continuous improvement.
• Ability to manage multiple priorities and adapt to changing production needs.

Performance Expectations

• Ensure all safety, quality, and productivity targets are met or exceeded.
• Maintain an organized and efficient work area in compliance with company standards.
• Demonstrate visible leadership presence on the production floor.
• Support a culture of accountability, teamwork, and operational excellence.

What We Offer

• Competitive compensation package commensurate with experience.
• Comprehensive health, dental, and vision insurance.
• Paid time off, holidays and retirement plan.
• Opportunity to work in a growing, innovative rail manufacturing company.
• Collaborative, team-oriented environment focused on safety, quality, and continuous improvement.

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