Controller, Accounting, Financial Compliance

American Terawatt is building a new industrial electric grid for the United States.

We design and deploy advanced power transmission systems, serving large industrial loads, gigawatts at a time. Our systems deliver power to everything from frontier AI datacenters to highly automated manufacturing, refineries, mines, and more.

The backbone of American Terawatt’s network is HVDC transmission, anchored by our unique terminal design. American Terawatt’s terminals are standardized, modular, and natively integrate energy storage. Each one is designed to expand to operate as a full node on our future HVDC transmission network.

We are early-stage and venture-backed, with a small, experienced team (~20 people today) and active projects across the US. Our investors include Altimeter, Founders Fund, Bessemer Venture Partners, Zero Infinity Partners, and other leading firms.

We are hiring a Controller to build and lead American Terawatt's accounting function, establishing the financial systems and processes needed to support our growth, and ensure our balance sheet is accurate and financeable.

As our first Finance Operations hire
, you will work directly with our founders and Head of Strategic Finance to build the accounting function from the ground up, select and implement our ERP system, oversee the implementation of our corporate structure, and lead our first financial audits.

This is a hands‑on, high‑ownership role for someone who thrives on building from scratch, exercises strong financial judgment, and wants to shape the financial foundation of a rapidly growing energy infrastructure company.

In the beginning you will report directly to Rob Parker, American Terawatt’s COO & Co‑founder.

• Develop accounting policies and positions for first‑of‑a‑kind (FOAK) infrastructure projects, including capitalization, construction costs, and other complex accounting considerations.

• Help shape the company's corporate structure to support the development and financing of large‑scale energy projects.

• Navigate complex accounting challenges with sound judgment and practical solutions.

• Partner with leadership to evaluate the financial implications of new business models and infrastructure investments.

• Establish and manage core accounting operations, including month‑end close, financial statements, reporting and vendor payments and accounts payable.

• Develop accounting policies, internal controls, and processes for novel infrastructure projects that scale with the business.

• Design and maintain the chart of accounts, project codes, and cost centers to support accurate financial tracking and reporting.

• Manage external accounting, tax, and financial service providers.

• Lead ERP selection and implementation.

• Prepare for and lead the company's first financial audits.

• Ensure compliance with US GAAP and applicable tax and reporting requirements.

• Review and certify credit ratios and lender compliance requirements

• Substantiate accounting and tax positions (with external advisors)

• Build and manage the company's budgeting and financial reporting processes.

• Partner with Finance on cash flow forecasting

• Partner with leadership to track spending, budgets, and financial performance.

• Establish processes for tracking capital expenditures, equipment purchases, and infrastructure project costs.

You will help shape the exact roadmap, but we expect success in this role to include the following early milestones:

• Assess existing accounting processes, financial systems, and reporting needs.

• Establish a roadmap for building the accounting function, including immediate priorities and controls.

• Take ownership of day‑to‑day accounting operations and the monthly close process.

• Issue RFP to solicit ERP proposals

• Brief potential accounting partners and develop RFP

• Propose payment controls

• Core accounting operations are running smoothly, with reliable financial reporting and internal controls. Monthly closes in