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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. Formed in 2023, the Antares team hails from SpaceX, The White House, MIT, Rigetti Computing, The Air Force, General Atomics, Relativity Space, Ursa Major, and National Laboratories like Los Alamos, Idaho, and Oak Ridge. Antares has raised over $130M in venture capital from top-tier investors and has over $13M in government funding. About the Team As the first Controller at Antares, you will build and scale the accounting function that supports the next generation of advanced nuclear technology. As the company grows from research and development into commercial deployment, you will establish the financial systems, controls, and processes that enable the business to operate efficiently and scale with confidence. This is a hands-on role for someone who enjoys building from the ground up, improving processes, and solving complex challenges. You will partner across the organization to ensure our financial infrastructure evolves alongside the business while maintaining the highest standards of accuracy, compliance, and operational excellence. Roles and Responsibilities: You will be responsible for: - Owning the monthly, quarterly, and annual close process, ensuring timely, accurate, and GAAP-compliant financial reporting. - Building and continuously improving the company's accounting policies, internal controls, and financial reporting processes. - Preparing financial statements and supporting schedules for management, investors, lenders, and external auditors. - Leading technical accounting matters, including revenue recognition, stock-based compensation, fixed assets, leases, accruals, and equity accounting. - Establishing scalable processes across accounts payable, payroll, treasury, purchasing, and expense management. - Partnering with external auditors, tax advisors, and valuation specialists to support annual audits, tax filings, and regulatory compliance. - Collaborating with Finance to support budgeting, forecasting, fundraising, and strategic financial initiatives. - Developing accounting processes to support manufacturing operations, inventory, cost accounting, and government contracting. - Evaluating and implementing accounting systems, ERP solutions, and automation tools that improve efficiency and scalability. - Partnering cross-functionally with Engineering, Operations, Supply Chain, Legal, and People to build financial processes that support a rapidly growing organization. Basic Qualifications: - Bachelor’s degree in Accounting, Finance, or related field. - 5+ years of progressive accounting experience, including public accounting and industry experience. - 3+ years in a Controller, Assistant Controller, or equivalent leadership role - Strong knowledge of U.S. GAAP and financial reporting requirements. - Experience leading monthly close and preparing audited financial statements. - Experience working with external auditors and tax advisors. - Strong ERP and accounting systems experience (QuickBooks, NetSuite, Sage Intacct, or similar). - Advanced Excel skills and strong financial systems aptitude. Preferred Skills & Experience: - Excellent communication and organizational skills with strong attention to detail. - Experience building the accounting function at a high-growth startup from the ground up. - Venture-backed startup experience - Experience with manufacturing, inventory accounting, standard costing, and cost accounting. - Experience with government contracting, DCAA compliance, FAR/DFARS