Assistant Controller, FP&A & Internal Controls

Ace-Thermal-Systems; Seminole (OK); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Medical coverage

Dental coverage

Vision coverage

401(k) matching

Paid time off

Life insurance

Disability insurance

Employee assistance program

Professional development

Wellness program

Job summary

ACE Thermal Systems is seeking an experienced Assistant Controller to lead our accounting operations and financial reporting during a pivotal growth phase. Reporting to the VP of Finance, you will shape the close process, strengthen internal controls, and deliver timely, accurate financial analysis for decision-making.

The role partners with Operations, Engineering, and Supply Chain to build scalable processes, budgets, and forecasts.

Qualifications

• Bachelor's degree in accounting, finance, or a related field.
• Seven or more years of progressive accounting and finance experience.
• Strong knowledge of GAAP, financial reporting, close processes, audits, and internal controls.
• Experience with budgeting, forecasting, and financial analysis.
• Advanced Excel and financial-system skills.
• Strong technical, analytical, organizational, and communication abilities.
• CPA or CMA and public accounting experience strongly preferred.
• IPO-readiness, SEC reporting, or SOX experience strongly preferred.
• Manufacturing, aerospace, defense, or cost-accounting experience preferred.

Responsibilities

• Manage key aspects of the monthly, quarterly, and annual financial close.
• Prepare and review GAAP-compliant financial statements and management reports.
• Develop, maintain, and continually improve recurring management reporting packages for executive leadership, business unit leaders, and corporate finance.
• Respond to evolving reporting requests by creating new financial analyses, dashboards, and reporting templates to support operational and strategic decision-making.
• Partner with cross-functional teams—including Operations, Engineering, Supply Chain, Sales, HR, and Executive Leadership—to provide financial reporting and insights that drive business performance.
• Translate financial and operational data into clear, actionable reporting for both finance and non-finance stakeholders.
• Support external audits, technical accounting, and due diligence.
• Help establish SOX-ready internal controls and scalable accounting processes.
• Support the future preparation of SEC filings and related financial disclosures.
• Lead budgeting, forecasting, financial modeling, and variance analysis.
• Oversee manufacturing and cost-accounting activities, including inventory and standard costs.
• Partner with leaders to evaluate profitability, working capital, capital investments, and operational performance.
• Own the preparation and distribution of monthly business reviews, KPI reporting, variance analyses, and executive presentation materials.
• Support ERP, reporting, consolidation, and finance-process improvements.
• Provide leadership and technical guidance to members of the accounting team.

Skills

GAAP knowledge

Financial reporting

Close processes

Internal controls

Budgeting

Forecasting

Financial analysis

Advanced Excel

ERP systems

Public accounting

CPA CMA

IPO/SEC/SOX

Manufacturing costing

Communication

Education

Bachelor's degree in accounting/finance

Tools

ERP systems

Job description

ACE Thermal Systems is seeking an experienced Assistant Controller to lead our accounting operations and financial reporting during a pivotal growth phase. Reporting to the VP of Finance, you will shape the close process, strengthen internal controls, and deliver timely, accurate financial analysis for decision-making.

The role partners with Operations, Engineering, and Supply Chain to build scalable processes, budgets, and forecasts.