Controller

Hadron Energy, Inc.; United States; On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical insurance

Vision insurance

Tuition assistance

Job summary

A leading nuclear energy company is seeking a Controller to oversee accounting operations, financial reporting, and internal controls. The ideal candidate will hold a CPA and have at least 10 years of accounting experience, including 5 years in a public or pre-IPO company. Key responsibilities include leading accounting functions, ensuring compliance with U.S. GAAP, and coordinating audits. The role offers an opportunity to contribute to a clean energy mission in a high-growth environment.

Qualifications

• 10+ years of progressive accounting experience.
• At least 5 years in a public or pre-IPO company.
• Experience managing external financial audits.

Responsibilities

• Lead all accounting functions including general ledger and payroll.
• Prepare and review consolidated financial statements.
• Support preparation of SEC filings and public company disclosures.

Skills

U.S. GAAP knowledge

Leadership

Communication skills

Attention to detail

Ability to manage multiple priorities

Education

Bachelor’s or Master’s degree in Accounting or Finance

Certified Public Accountant (CPA)

Tools

ERP systems

Job description

Hadron Energy specializes in Micro Modular Reactor (MMR) development, design, and research based in the San Francisco Bay Area. As the leading MMR developer, Hadron Energy is building factory-produced, transportable microreactors that provide 24/7 carbon-free power for data centers, government facilities, industrial sites, and remote communities. Our mission is to create a brighter, healthier, and more equitable energy future.

This is a full-time on-site role for a Controller, based in the New York City Area. The position is ideal for candidates with a strong accounting and finance background who are eager to help scale a high-growth clean‑energy company preparing to become publicly traded.

The Controller will oversee Hadron Energy’s accounting operations, financial reporting, and internal control systems as the company transitions from startup to public‑company readiness. This individual will work closely with the Chief Financial Officer, General Counsel, and executive team to build robust financial infrastructure, ensure compliance with GAAP and SEC standards, and support audit and regulatory readiness for upcoming filings and investor reporting.

You will play a key leadership role in shaping Hadron’s financial integrity by implementing systems, managing audits, and establishing controls that support our mission to commercialize next‑generation nuclear technology at scale.

Responsibilities

• Lead all accounting functions including general ledger, accounts payable/receivable, payroll, and fixed‑asset accounting
• Oversee monthly, quarterly, and annual close processes, ensuring accuracy and timeliness
• Prepare and review consolidated financial statements in accordance with U.S. GAAP
• Support preparation of SEC filings (S‑4, 10‑K, 10‑Q, 8‑K) and other public‑company disclosures
• Develop and maintain internal controls and compliance frameworks in preparation for Sarbanes‑Oxley (SOX) readiness
• Coordinate annual financial audits and liaise with external auditors and advisors
• Implement and manage an enterprise resource planning (ERP) system to streamline reporting and scalability
• Partner with FP&A, operations, and supply‑chain teams to align financial reporting with manufacturing and project activities
• Oversee equity, stock administration, and related accounting (ASC 718)
• Provide strategic insights to the CFO to support budgeting, forecasting, and capital‑market activities
• Mentor and develop the accounting team to establish a culture of accuracy, accountability, and transparency

Qualifications & Skillsets

• Bachelor’s or Master’s degree in Accounting, Finance, or a related field
• Certified Public Accountant (CPA) required
• 10+ years of progressive accounting experience, with at least 5 years in a public or pre‑IPO company
• Strong knowledge of U.S. GAAP, PCAOB audit standards, and SOX 404 compliance
• Experience managing external financial audits and implementing ERP systems
• Proven ability to scale accounting operations in a capital‑intensive or manufacturing environment
• Excellent organizational skills and attention to detail, with the ability to manage multiple priorities under tight deadlines
• High integrity and sound judgment—able to balance growth‑stage flexibility with public‑company discipline
• Strong leadership, communication, and cross‑functional collaboration skills
• Passion for clean energy, innovation, and the opportunity to help shape a first‑of‑its‑kind nuclear energy company

Benefits

• Medical insurance
• Vision insurance
• Tuition assistance

Seniority level

• Director

Employment type

• Full‑time

Job function

• Accounting/Auditing and Finance

Industries

• Nuclear Electric Power Generation, Financial Services, and Accounting