Sales Engineer - Data Centers & BESS

ON.energy is building the power infrastructure that makes the AI era possible, providing advanced power technology for cloud and AI companies. The Sales Engineer will lead the technical-commercial strategy, overseeing the delivery of Battery Energy Storage Systems and power infrastructure solutions for hyperscale data centers and utility-scale clients.

Responsibilities:

• Lead technical engagements with clients to define system architecture, sizing, and performance requirements for BESS and data center power systems
• Develop conceptual and detailed design proposals, single-line diagrams, and equipment specifications
• Support proposal development by preparing technical documentation, cost estimates, and performance simulations
• Translate customer requirements into system configurations optimized for performance, cost, and reliability
• Partner with business development and executive teams to define bid strategies and technical differentiators
• Deliver technical presentations and system demonstrations to key stakeholders, including C-level executives, engineers, and procurement teams
• Participate in RFP/RFQ responses, ensuring all technical deliverables meet client specifications
• Support contract negotiations by clarifying technical scope and validating cost structures
• Work closely with engineering, project management, and procurement teams to ensure seamless project handoff and delivery
• Provide feedback to the product and engineering teams regarding customer needs and emerging market trends
• Assist marketing and product management with content and case studies demonstrating the value of ON Energy’s solution

Requirements:

• Bachelor's degree in Electrical Engineering, Mechanical Engineering, or related discipline
• 7+ years of experience in managing technical sales, applications engineering, or solution engineering within the BESS, renewable energy, or data center industries. Strong understanding of battery storage systems (lithium-ion preferred), inverters, switchgear, and controls
• Knowledge of data center electrical infrastructure including UPS systems, backup generation, and critical power distribution
• Proficiency in interpreting electrical drawings and system schematics
• Excellent communication and presentation skills for both technical and executive audiences
• Master's degree in Engineering, Energy Systems, or Business Administration
• Familiarity with Procore, AutoCAD, or electrical modeling tools (ETAP, HOMER, or similar)
• Experience with EPC or IPP project development processes
• Understanding of interconnection, permitting, and grid compliance requirements