We are a next-generation nuclear technology startup pioneering the commercialization of High-Temperature Gas-cooled Reactors (HTGRs) — a proven, safe, and transformative technology for delivering ultra-high-temperature heat and enabling a carbon-neutral future. Our mission is to deploy the world’s first global fleet of Advanced Modular Reactors, redefining how clean energy powers industries, communities, and economies. As a fast-growing company in its early stage, every team member — whether in engineering, program management, partnerships, operations, or business development — plays a direct role in shaping our technology, culture, and impact. You’ll join a collaborative, mission-driven team of internationally recognized experts and innovators working together to bring advanced nuclear energy to the world.

Accounting Specialist

Location: Houston, TX – Hybrid

Employment Type: Full-Time

Reports To: Vice President, Corporate & Finance Operations

About Us

We are a next-generation nuclear technology startup pioneering the commercialization of High-Temperature Gas-cooled Reactors (HTGRs) — a proven, safe, and transformative technology for delivering ultra-high-temperature heat and enabling a carbon-neutral future.

Our mission is to deploy the world’s first global fleet of Advanced Modular Reactors, redefining how clean energy powers industries, communities, and economies.

As a fast-growing company in its early stage, every team member — whether in engineering, program management, partnerships, operations, or business development — plays a direct role in shaping our technology, culture, and impact. You’ll join a collaborative, mission-driven team of internationally recognized experts and innovators working together to bring advanced nuclear energy to the world.

The Role

We are seeking a detailed-oriented Accounting Specialist to support the company’s financial operations by managing journal entries, account reconciliations, and month-end close activities while ensuring accurate financial records and audit readiness.

Key Responsibilities

• Accounting Operations: Prepare and post journal entries, perform balance sheet and bank reconciliations, and maintain accurate financial records in support of the monthly close process.
• Document Management: Maintain a rigorous filing system for all financial records, invoices, and receipts to ensure audit readiness.
• Timeline Adherence: Maintain organized financial documentation and supporting schedules to ensure audit readiness and compliance with internal controls.
• Proactive Communication: Practice proactive Report - Inform - Consult to ensure transparency and early identification of issues.
• Financial Review & Analysis: Review accounting transactions and reconciliations to identify discrepancies, investigate root causes, and recommend corrective actions.

What You Bring

• Minimum of three (3) years of accounting or bookkeeping experience supporting general ledger activities and financial close processes.
• Core Competency: Strong understanding of accounting principles and financial recordkeeping including journal entries, reconciliations, and general ledger processes.
• Soft Skills: Excellent organizational skills and a commitment to meeting deadlines.
• Reliability: High level of integrity in handling sensitive financial data and documentation.
• Technical Skills: Strong familiarity with QuickBooks and NetSuite.
• Flexibility with schedule to attend meetings with our Japan subsidiary.

Even Better

• Experience in supporting Tax filings.
• Prior experience in Treasury support (e.g., processing wire transfers).
• Familiarity with internal controls and audit documentation practices.
• While English is the working language, Any level of Japanese is a plus .

Why Work for Us

• Competitive salary.
• Flexible hours & remote options.
• Health/Life/Disability benefits.
• Vacation/Sick leave.
• Work alongside internationally recognized experts shaping the future of nuclear energy.

EEO Statement

ZettaJoule is an Equal Employment Opportunity employer committed to diversity and inclusion.