Sales Engineer - Energy Storage (BESS) & Data Center

On.Energy is scaling fast. We’re building critical infrastructure at the center of the global energy and AI transformation. With a multi-gigawatt pipeline across the U.S. and Latin America, and hyper-scale data center deployments already underway, we’re on track to become one of the most important energy technology companies of this decade.

About The Role

The Sales Engineer will serve as a technical and commercial bridge between ON Energy’s

business development, engineering, and customer teams. This role is focused on delivering

Battery Energy Storage System (BESS) and power infrastructure solutions to hyperscale data

centers, industrial clients, and utility-scale customers. The ideal candidate possesses strong

technical acumen in energy systems and data center electrical infrastructure, coupled with proven

experience in consultative sales and project scoping.

As a Sales Engineer at ON Energy, you will:

Technical Pre-Sales

• 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.
  
  

Commercial and Client Interfacing

• 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.
  
  

Internal Collaboration

• 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 solutions.
  
  

Requirements

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, or related discipline.
• 3- 5 years of experience in 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.
  
  

Preferred

• 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.
  
  

Competencies

• Analytical problem-solving with strong attention to detail.
• High commercial awareness and ability to translate technical value into business outcomes.
• Strong sense of ownership and accountability in a fast-paced environment.
• Cross-functional collaboration mindset and ability to interface with engineering, finance, and legal teams.
  
  

Location:

Miami, FL, USA

Job Type:

On-Site

Date of Posting:

Posting Expiration:

Oct 22, 2025