Finance & Accounting Manager

Woojin ISA•Santa Fe Springs, CA

3d•Onsite

About The Position

Woojin IS America, Inc., 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. We are seeking a bilingual (English, Korean) Accounting & Finance Manager to lead both accounting operations and financial planning for our manufacturing business. Using QuickBooks, this role owns the monthly close, US GAAP financial reporting, budgeting, forecasting, performance analysis, and cash flow management. This role will partner closely with cross functional teams and with leadership to improve gross margin visibility, strengthen internal controls, support tax and audit requirements, and build scalable financial processes as the business grows.

Requirements

Bachelor’s degree in Accounting, Finance, or related field.
6+ years of progressive experience across accounting (close and reporting) and FP&A (budget, forecast, analysis) in manufacturing environment.
Strong knowledge of US GAAP, especially inventory, COGS, accrual accounting, and period cut-off.
Hands-on experience with QuickBooks (Online or Desktop).
Demonstrated experience with inventory, WIP, cycle counts, physical inventory, and gross margin analysis.
Experience supporting tax reporting (tax schedules, workpapers, sales & use tax support) with external advisors.
Experience leading external audits and producing audit-ready reconciliations and documents.
Bilingual: English and Korean.

Nice To Haves

Experience in high-growth or scaling environments, building 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.
Good leadership ability, including coaching, developing, and managing a team.
Strong organizational skills and the ability to work effectively across cross-functional teams.

Responsibilities

Own the monthly, quarterly, and year-end close calendar and deliver timely, accurate financial statements (P&L, Balance Sheet, Cash Flow).
Review and approve journal entries, accruals, and account reconciliations; ensure general ledger accuracy and complete supporting schedules.
Maintain and document accounting policies, procedures, and close checklists in accordance with U.S. GAAP.
Prepare monthly management reporting packages and clearly explain results through variance and flux analysis.
Oversee inventory accounting for raw materials, WIP, and finished goods, ensuring accurate 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 (materials, labor, overhead, purchase price variance) and partner with Operations to resolve root causes.
Lead cycle counts and physical inventories; investigate, document, and approve adjustments and shrinkage.
Own the annual budgeting and rolling forecast processes using driver-based models (volume, mix, pricing, labor, overhead, and capex).
Provide actionable financial insights to leadership to support operational and strategic decision-making.
Build and maintain short- and mid-term cash forecasts (weekly and monthly) and highlight risks and opportunities.
Monitor and analyze working capital metrics (DSO, DPO, DIO) and drive initiatives to improve cash conversion.
Support banking and financing reporting and covenant tracking, as applicable.
Own QuickBooks configuration, including chart of accounts, classes, and locations (if applicable), and ensure accurate, consistent, and auditable financial data.
Implement best practices for internal controls in QuickBooks (permissions, approvals, audit trail) and improve reporting automation.
Support and manage system integrations (inventory/production, procurement, payroll, shipping) and ensure clean data flow into the GL.
Prepare and review tax-related schedules and workpapers, coordinate with external tax advisors and CPAs.
Support sales & use tax compliance and reconciliations, and any other filings as applicable and maintain documentation readiness.
Lead external audits: manage timelines, respond to PBC requests, and provide audit-ready workpapers (inventory, cut-off, accruals, reserves).
Strengthen internal controls over inventory, purchasing, A/P, and monthly closing to ensure consistent, documented processes.
Manage and develop accounting staff, as applicable, drive accountability and continuous improvement.
Partner with cross functional teams such as Operations, Supply Chain, Sales, and leadership to ensure aligned assumptions and accurate performance reporting.