Project Controller - Services

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.

The Project Controller is responsible for overseeing all financial aspects of service project execution, including preventative and reactive maintenance, performance monitoring, and warranty activities. This role manages budgeting, forecasting, cost control, revenue recognition, cash collection, risk management, and compliance across ongoing service agreements. As a key liaison between Project Management, Finance, and other departments, the Project Controller ensures accurate financial tracking, reporting, and governance throughout the full-service lifecycle, including contract execution, warranty periods, and continuous service delivery.

Key Responsibilities

• Budgeting and Forecasting: Develop and maintain project budgets, update forecasts, and manage cash flow projections
• Cost Control & Analysis: Track project costs, analyze variances, and support corrective action plans
• Project Monitoring & Reporting: Maintain performance dashboards and prepare periodic project financial reports
• Contract: Ensure contract terms are adhered to regarding financial reporting, milestones, liquidated damages and billing
• Risk & Change Management: Assess financial impacts of project changes and integrate approved adjustments into forecasts and billing
• Compliance and Governance: Ensure adherence to corporate, audit, and accounting standards (SOX, GAAP)
• Customer Billing & Invoicing: Oversee accurate and timely billing aligned with contract terms; support AR in resolving issues
• Month End Close: Apply appropriate revenue recognition methods (POC, milestone-based, straight line, time & materials) in accordance with accounting standards
• Oversight: Review and approve purchase orders, invoices, contracts all in line with budget and proper cost allocation
• Claims & Change Orders: Quantify, track, and support financial recovery of claims, variations, and change orders in alignment with contractual terms
• Warranty Management: Track warranty provisions, monitor actual warranty costs against accruals, and ensure appropriate financial reporting during the warranty period
• Commercial & Margin Support: Provide financial insights to improve project profitability and support bid/tender processes with cost benchmarks and risk assessments

Qualifications

• Bachelor’s degree in Finance, Accounting, Engineering, Construction Management, or related field.
• 5–7 years of project-controls experience in service projects
• Strong proficiency with NetSuite, Procore, and advanced Excel;
• Proven ability to communicate complex ideas simply and drive proactive process improvements.
• Takes initiative and contributes actively to a fast-growing, results-driven team

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.