Senior Buyer

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. Role Description The Senior Buyer is responsible for end-to-end procurement execution for BESS projects. This role is execution-focused, emphasizing disciplined delivery against project schedules and specifications. Category strategy and long-term supplier positioning are led by Sourcing / Category Managers. Key Responsibilities Manage RFQs and RFPs. Build and maintain strong relationships with OEMs and integrators. Coordinate with engineering teams to align procurement activities with technical requirements. Monitor supplier performance, lead times, and supply chain risks. Track market trends in utility and electrical equipment, pricing, and the supplier landscape. Proactively manage delivery schedules, expediting, changes, and recovery plans. Key Skills & Competencies: 3–5 years of experience in procurement, sourcing, or supply chain roles. Experience in renewable energy, power infrastructure, or energy storage. Experience with project-based procurement. Strong analytical skills and attention to detail. Ability to work comfortably in a fast-paced, growing organization. Proficiency in Excel and ERP / procurement tools (Procure and NetSuite) Preferred Qualifications: 3–5 years of procurement experience in the energy or infrastructure sector. Bachelor’s degree in Electrical Engineering, Business Administration Supply Chain, or a related field. Experience with utility-scale or C&I energy projects. Familiarity with UL, IEC, and IEEE standards applicable to BESS equipment. Why Join ON.energy • Be part of a company driving the global energy transition. • Work hands-on with cutting-edge BESS technology. • High-visibility role with direct impact on project success. • Entrepreneurial environment with opportunities for growth and ownership. 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 [email protected] Benefits vary by role and location and are subject to change.

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