About Woojin IS America:
Founded in South Korea in 1974, Woojin Industrial Systems has built a strong reputation as a global leader in the rolling stock industry, known for delivering reliable and innovative solutions such as metro cars and the Automatic People Mover (APM) at Incheon International Airport. Established in 2011, Woojin IS America continues to expand its presence in the U.S. market and is seeking talented individuals to support its ongoing growth. Headquartered in Santa Fe Springs, California, Woojin IS America, Inc. is a rapidly growing manufacturer specializing in electric equipment for rolling stock and light rail vehicles. We proudly serve customers across North America with advanced technologies that ensure safe, reliable, and long-lasting transportation solutions.
Join Woojin IS America – A Leader in Rolling Stock Innovation!
For more information, please visit https://wjis.co.kr/en/
Location: Santa Fe Springs, CA
Department: Administration
Reports To: Director of Administration
Employment Type: Full-Time, Exempt
Compensation: $95,000 – $130,000 per year, negotiable depending on experience
Key Responsibilities:
Accounting, Close & Financial Reporting
Own the monthly, quarterly, and year-end close process and deliver timely, accurate financial statements, including P&L, Balance Sheet, and Cash Flow.
Review and approve journal entries, accruals, and account reconciliations.
Ensure general ledger accuracy and maintain complete supporting schedules.
Maintain and document accounting policies, procedures, and close checklists in accordance with U.S. GAAP.
Prepare monthly management reporting packages and explain results through variance and flux analysis.
Manufacturing Accounting
Oversee inventory accounting for raw materials, work-in-process, and finished goods.
Ensure accurate inventory valuation and strong period cut-off.
Own COGS and gross margin accuracy.
Reconcile inventory subledgers and schedules to the general ledger.
Analyze manufacturing cost drivers and variances, including materials, labor, overhead, and purchase price variance.
Partner with Operations to identify and resolve root causes.
Lead cycle counts and physical inventories.
Investigate, document, and approve inventory adjustments and shrinkage.
Budgeting, Forecasting & Business Insights
Own the annual budgeting and rolling forecast processes using driver-based models.
Analyze volume, mix, pricing, labor, overhead, and capital expenditure assumptions.
Provide actionable financial insights to leadership to support operational and strategic decision-making.
Cash Flow & Working Capital
Build and maintain short-term and mid-term cash forecasts on a weekly and monthly basis.
Identify cash flow risks and opportunities.
Monitor and analyze working capital metrics, including DSO, DPO, and DIO.
Drive initiatives to improve cash conversion.
Support banking and financing reporting and covenant tracking, as applicable.
QuickBooks Ownership & Process Improvement
Own QuickBooks configuration, including chart of accounts, classes, and locations, if applicable.
Ensure accurate, consistent, and auditable financial data.
Implement best practices for internal controls in QuickBooks, including permissions, approvals, and audit trail.
Improve reporting automation and accounting processes.
Support and manage system integrations for inventory, production, procurement, payroll, and shipping.
Ensure clean data flow into the general ledger.
Tax Reporting Support & Audit
Prepare and review tax-related schedules and workpapers.
Coordinate with external tax advisors and CPAs.
Support sales and use tax compliance, reconciliations, and other filings as applicable.
Maintain documentation readiness.
Lead external audits by managing timelines, responding to PBC requests, and providing audit-ready workpapers.
Strengthen internal controls over inventory, purchasing, accounts payable, and monthly closing.
Leadership & Collaboration
Manage and develop accounting staff, as applicable.
Drive accountability and continuous improvement.
Partner with Operations, Supply Chain, Sales, and leadership to ensure aligned assumptions and accurate performance reporting.
Required Qualifications:
Bachelor’s degree in Accounting, Finance, or a related field.
6+ years of progressive experience across accounting, close/reporting, and FP&A in a manufacturing environment.
Strong knowledge of U.S. GAAP, especially inventory, COGS, accrual accounting, and period cut-off.
Hands-on experience with QuickBooks Online or Desktop.
Experience with inventory, WIP, cycle counts, physical inventory, and gross margin analysis.
Experience supporting tax reporting, including tax schedules, workpapers, and sales and use tax support with external advisors.
Experience leading external audits and producing audit-ready reconciliations and documents.
Bilingual in English and Korean.
Preferred Qualifications:
Experience in high-growth or scaling environments.
Experience building accounting processes and internal controls from the ground up.
Experience with inventory system add-ons, ERP integrations, and data reconciliation.
Multi-location inventory and multi-state sales tax experience.
Strong analytical skills with exceptional attention to detail.
Excellent written and verbal communication skills.
Strong leadership ability, including coaching, developing, and managing a team.
Strong organizational skills and ability to work effectively across cross-functional teams.
Benefits:
401(k)
401(k) matching
Dental insurance
Disability insurance
Health insurance
Paid sick time
Paid time off
Vision insurance
How to Apply:
Please send your resume to enam@woojinisa.com with Finance & Accounting Manager in the subject line.
Location: Carson, CA
Department: Operations / Production
Reports To: Head of Carson
Employment Type: Full-Time, Exempt
Compensation: $70,000- $90,000
Position Summary:
The Production Planner is responsible for developing and managing production schedules to ensure timely manufacturing and delivery of products. This role coordinates demand, materials, and capacity to optimize efficiency while minimizing delays and inventory imbalances.
Key Responsibilities:
Production Planning & Scheduling
Create and maintain daily, weekly, and monthly production schedules.
Align production plans with customer orders, forecasts, and inventory levels.
Prioritize work orders and adjust schedules based on changing demands.
Monitor schedule adherence and communicate deviations.
Material Planning & Coordination
Ensure availability of raw materials and components for production.
Coordinate with Procurement on material shortages and lead times.
Track inventory levels and support inventory control efforts.
ERP / MRP System Management
Generate and manage work orders within ERP/MRP systems.
Maintain accurate data, including BOMs, lead times, and routing.
Analyze system outputs to improve planning accuracy.
Cross-Functional Communication
Collaborate with Production, Warehouse, Procurement, Engineering, and Korea HQ.
Communicate schedule changes, risks, and priorities clearly.
Support production schedule changes and engineering changes as needed.
Performance Monitoring & Reporting
Track key metrics such as schedule adherence, on-time delivery, and inventory levels.
Identify planning gaps and recommend improvements.
Prepare reports for management on production performance.
Skills & Qualifications:
Education & Experience
Bachelor’s degree in Supply Chain, Operations, Business, or related field, or equivalent experience.
2–5+ years of experience in production planning, scheduling, or supply chain.
Skills & Competencies
Strong analytical and organizational skills.
Experience with ERP/MRP systems, such as SAP, Oracle, or NetSuite.
Advanced Excel skills, including pivot tables and data analysis.
Ability to manage multiple priorities in a fast-paced environment.
Strong communication and coordination skills.
Bilingual in English and Korean.
Preferred Qualifications
Experience in a manufacturing environment.
Knowledge of demand planning or forecasting.
APICS certification, such as CPIM, is a plus.
Working Conditions:
Office-based role with regular interaction on the production floor.
May require occasional overtime depending on production needs.
Key Performance Indicators:
Schedule adherence.
On-time delivery performance.
Inventory turnover and accuracy.
Production plan stability.
How to Apply:
Please send your resume to enam@woojinisa.com with Production Planner in the subject line.
Location: Santa Fe Springs, CA
Department: Production
Reports To: Assistant Manager, Production Planning
Employment Type: Full-Time, Non-Exempt
Compensation: $25-$30
Position Summary:
The Manufacturing Support Coordinator supports daily production operations by coordinating packaging, shipment scheduling, documentation, and logistics tracking for project units. This role ensures all production units are properly prepared, documented, and delivered on schedule while also supporting production planning activities. This position offers growth opportunities into production planning and project operations management.
Key Responsibilities:
Production & Packaging Support
Package, label, and log all project serial units, also known as production units, accurately and efficiently.
Inspect packaged units to ensure shipping readiness and compliance with company standards.
Maintain packaging inspection records and shipment readiness documentation.
Safely lift and move materials up to 50 lbs.
Shipping & Logistics Coordination
Schedule all outbound and inbound shipments, including project units, ship-out requests, and pick-up requests.
Obtain and compare freight quotes to support cost-effective shipping decisions.
Prepare all required shipping documentation, including shipping invoices, packing lists, shipper’s letters of instruction, and bills of lading.
Communicate shipment schedules and delivery details to consignees, requestors, and internal stakeholders.
Track shipments and proactively follow up on delays, customs issues, or other logistics concerns.
Coordinate with freight forwarders, carriers, and customs contacts as needed.
Administrative & Systems Support
Submit shipment-related payment requests to the Finance team.
Maintain and update Smartsheet tracking systems, including shipping logs, ship-out requests, pick-up requests, shipping invoices, and packaging inspection logs.
Ensure accurate recordkeeping and reporting for all logistics and production support activities.
Production Planning Support
Understand production schedules and assist in coordinating production timelines.
Support production planning activities to align shipping schedules with project deadlines.
Provide auxiliary support to senior production and project team members.
Assist in process improvements for workflow efficiency.
Skills & Qualifications:
Required
High school diploma or equivalent; associate or bachelor’s degree preferred.
Proficiency in Microsoft Excel and Smartsheet, or similar tracking tools.
Strong organizational and multitasking skills.
Ability to manage documentation with high attention to detail.
Effective communication skills for internal and external coordination.
Ability to lift up to 50 lbs.
Preferred
Bilingual in English and Korean.
Experience in logistics, shipping coordination, production support, or operations.
Knowledge of domestic and international shipping documentation and customs processes.
Familiarity with freight quote comparisons and freight coordination.
Understanding of production scheduling or project-based manufacturing environments.
Career Growth Opportunities:
Production Planning
Project Coordination
Operations Management
Production / Project Management Leadership
Key Performance Indicators:
On-time shipment coordination.
Accuracy of shipping documentation.
Production unit packaging accuracy.
Shipping cost efficiency.
Timely resolution of shipping and customs issues.
Accuracy of Smartsheet and logistics records.
How to Apply:
Please send your resume to enam@woojinisa.com with Manufacturing Support Coordinator in the subject line.
Location: Santa Fe Springs, CA
Department: Production
Employment Type: Full-Time, Non-Exempt
Compensation: $20.00 – $25.00 per hour
Position Summary:
The Production Assembler is responsible for assembling, testing, and troubleshooting electronic components used in rolling stock equipment. This role requires strong attention to detail, diligence, teamwork, and the ability to follow technical specifications and work instructions. The ability to read and interpret technical schematics is a plus.
Key Responsibilities:
Assemble and install electronic components, wiring, and subassemblies into rolling stock according to technical specifications and work instructions.
Read and interpret production drawings to ensure proper assembly and functionality of electronic systems.
Use hand tools and power tools to assemble and install electronic components.
Maintain a clean and organized work environment while following safety protocols and company standards.
Participate in continuous improvement initiatives to improve production efficiency and product quality.
Work collaboratively with team members to meet production goals and deadlines.
May occasionally drive a forklift if approved by the company.
Skills & Qualifications:
High school diploma or equivalent required; technical certification in electronics or a related field preferred.
1+ year of manufacturing experience required.
2+ years of experience in electronic assembly, especially in a manufacturing or production setting, preferred.
Understanding of electrical systems, circuits, and components.
Ability to read and interpret technical drawings, schematics, and diagrams.
Proficiency in using hand tools and power tools for assembly work.
Strong attention to detail and commitment to producing high-quality work.
Strong communication and teamwork skills.
Valid driver’s license required.
Ability to commute to Santa Fe Springs, CA 90670.
Physical Requirements:
Ability to walk and perform repetitive tasks for extended periods.
Ability to lift and move heavy components up to 50 lbs, as necessary.
Manual dexterity and hand-eye coordination.
Must wear personal protective equipment as required.
Benefits:
401(k)
401(k) matching
Dental insurance
Health insurance
Paid time off
Career Growth Opportunities:
Opportunities for career advancement and professional development.
Collaborative and supportive work environment.
Work Location:
In person
How to Apply:
Please send your resume to enam@woojinisa.com with Production Assembler / Assembly Line Worker in the subject line.
