Sales Engineer - Energy Storage (BESS) & Data Center
Job ID #
37
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:
Job Type:
On-Site
Date of Posting:
Posting Expiration:
Attention: If you are unable to provide a CV Link, please email your CV to recruitment@onenergystorage.com, along with the position for which you wish to apply.