General Accountant

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

• Manage the General Ledger, ensuring all financial transactions are properly recorded, supported, and reconciled in accordance with internal accounting policies and US GAAP
• Prepare and review bank reconciliations, accounts payable, accounts receivable, prepaid expenses, depreciation, and other relevant balances.
• Support the execution of monthly, quarterly, and annual closings, including preparation of adjusting entries, variance analysis, and internal financial reports.
• Prepare consolidated financial reports, manage inter-company transactions, and coordinate with internal and external audits.
• Ensure compliance with US GAAP, accounting integrity, and internal controls, and provide proper documentation for audits.
• Collaborate with U.S.-based finance teams on financial analysis, budgeting, forecasting, and process improvements.
• Assist and participate in new ERP Implementation process.
• Roll up your sleeves and support day-to-day accounting needs while helping scale processes as the company grows.

Qualifications

• Bachelor's degree in Accounting (CPA certification preferred).
• Strong working knowledge of US GAAP.
• 5–10 years of hands-on accounting experience, ideally in fast-paced or high-growth environments
• Proven experience across general accounting, close process, and financial reporting.
• Comfortable operating both strategically and tactically — able to own processes while executing details.
• Experience with ERP systems (NetSuite, SAP, or similar).
• Fluency in English and Spanish (required).
• Highly proactive, detail-oriented, and adaptable — someone who thrives in a startup environment.

For US-based roles - What you’ll get:

• Competitive salary + annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays 

For Mexico-based roles - What you’ll get:

• Competitive salary + annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For all roles:

• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy
• Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation.
• Accommodations: If you need an accommodation during the application process, email recruitment@onenergystorage.com
• Benefits vary by role and location and are subject to change.