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Senior Buyer

ON.energy


Job Location:

Mexico City - Mexico

Monthly Salary: Not provided by the employer
Posted: 5 June 2026 (30+ days ago)
Application Deadline: 2 September 2026
Vacancies: 1 Vacancy
The job posting is outdated and position may be filled

Job Summary

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 provides a new class of power technology proven at gigawatt scale and trusted by the worlds 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 were scaling faster than the grid can transforming power from a bottleneck into a competitive advantage for the companies building the future.

This is a hybrid role - you will be in the office 3 - 4 days per week

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:

  • 35 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:

  • 35 years of procurement experience in the energy or infrastructure sector.
  • Bachelors 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

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 youll 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 youll 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: 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
  • Benefits vary by role and location and are subject to change.

Required Experience:

Senior IC