Senior Accountant

About Us

At Antares, our long-term mission is to make clean energy abundant from Earth to the Asteroid Belt. We’re fueled by the belief that advanced nuclear energy can strengthen our military, solve the climate crisis, elevate global living standards, and expand humanity's presence in outer space. To achieve our mission, we’re building mass-producible, inherently safe, deployable microreactors that can be used terrestrially, underwater, and in space.

The Antares team hails from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, Rigetti Computing, General Atomics, Relativity Space, Ursa Major, and National Laboratories like Idaho, Oak Ridge, Los Alamos, and Savannah River. Antares has raised over $600M in venture capital from top-tier investors and has hundreds of million-dollars on contract with the military services, NASA, and the Department of Energy.

About the Team

Antares is building its Finance & Accounting organization to support the company's transition from research and development into manufacturing and commercial deployment. As a Senior Accountant
, you will be one of the early members of the accounting team and play a key role in building the processes, systems, and financial infrastructure required to scale Antares.

This is a highly hands on role with broad exposure across the business. You will own significant portions of the monthly close and financial reporting process while working across technical accounting, government contracts, cost accounting, fixed assets, and financial systems.

You won't be joining a large accounting organization where you own one narrow piece of the process. You'll have the opportunity to take meaningful ownership from day one, work directly with Finance leadership, and help build the accounting function as Antares scales from development into production.

Roles and Responsibilities:

You will be responsible for:

• Own key areas of the monthly, quarterly, and annual close process, including journal entries, accruals, account reconciliations, supporting schedules, and variance analysis.
• Maintain accurate general ledger accounts and proactively investigate and resolve accounting discrepancies.
• Own balance sheet reconciliations and support monthly financial statement and management reporting.
• Support the preparation of GAAP financial statements and related reporting packages.
• Manage accounting for assigned areas such as cash, prepaid expenses, fixed assets, accounts payable, payroll, accruals, and other balance sheet and P&L accounts.
• Support annual financial statement audits, tax filings, and other compliance activities, including preparing schedules and working directly with external auditors and advisors.
• Help develop and document accounting policies, procedures, internal controls, and close processes as the company scales.
• Partner with Engineering, Manufacturing, Supply Chain, Operations, People, and other teams to ensure transactions are accurately recorded and appropriately supported.
• Support accounting for government contracts, including project costs, labor, indirect costs, billing, and related compliance requirements.
• Help build Antares' manufacturing and inventory accounting processes as the company transitions into reactor production, including inventory, WIP, capitalization, overhead allocation, and cost accounting.
• Support technical accounting matters including revenue recognition, leases, stock-based compensation, and other complex or non-routine transactions.
• Help implement and improve accounting systems, ERP tools, and automation to increase the accuracy, scalability, and efficiency of financial processes.
• Identify opportunities to improve existing accounting processes rather than simply operating them.
• Take ownership of new…