BESS Solutions Engineer

Ener Sys is a global leader in stored energy solutions for industrial applications. We have over thirty manufacturing and assembly plants worldwide servicing over 10,000 customers in more than 100 countries. Worldwide headquarters are located in Reading, PA, USA with regional headquarters in Europe and Asia. We complement our extensive line of Motive Power and Energy Systems with a full range of integrated services and systems.

With sales and service locations throughout the world, and over 100 years of battery experience, Ener Sys is the power/full solution for stored DC power products.

As a Solutions Engineer - BESS at Ener Sys, you will play a pivotal role in advancing our entry into the Battery Energy Storage System (BESS) market. You will lead technical solution design, economic modeling, and deployment support across industrial, commercial, telecom, and motive power markets. This role bridges commercial strategy with engineering execution, enabling Ener Sys to deliver intelligent, resilient, and cost-effective energy solutions.

Technical Solution Development

• Design customized BESS systems integrating battery technology, inverters, EMS, and grid/telco interfaces.
• Develop energy system configurations that optimize performance, reliability, and return on investment.
• Conduct load analysis, site assessments, and grid interconnection planning.
• Ensure all solutions are compliant with applicable standards (NEC, UL9540/9540A, NFPA, etc.).

Economic and Performance Modeling

• Lead economic analysis using modeling tools such as Energy Toolbase, HOMER Grid, and Stem Athena (or equivalent platforms).
• Simulate customer load profiles, rate structures, and system behavior for peak shaving, time-of-use shifting, demand response, and backup scenarios.
• Create ROI models, payback period forecasts, and total cost of ownership evaluations.
• Communicate financial outcomes clearly to both technical and executive stakeholders.

Sales and Customer Engagement

• Support Business Development Managers during the sales process as the technical subject matter expert.
• Deliver compelling technical and financial presentations to customers, EPCs, and channel partners.
• Respond to RFPs and coordinate with internal engineering, supply chain, and compliance teams.

Field Deployment & Support

• Provide engineering oversight during commissioning and integration.
• Partner with Field Services to troubleshoot, validate, and optimize system performance.
• Participate in continuous improvement initiatives based on project feedback.

Strategic Enablement

• Provide structured feedback to product managers and engineering on solution gaps and customer needs.
• Help build internal tools, training content, and solution templates to scale field adoption.
• Monitor BESS market trends and competitor offerings.

• Bachelor's degree in Electrical Engineering, Energy Systems, Power Engineering, or related technical field.
• 5+ years of experience designing or deploying energy systems, with emphasis on energy storage, power electronics, or microgrid applications.
• Direct experience using modeling tools such as Energy Toolbase, HOMER Grid, STEM Athena, or Geli ESyst.
• Familiarity with lithium-ion battery systems, inverters, and grid controls.
• Ability to lead customer-facing technical engagements and collaborate cross-functionally.

Preferred Qualifications

• Professional Engineer (PE) license or equivalent credentials.
• Knowledge of energy markets, tariffs, demand charges, and regulatory frameworks.
• Experience with utility-scale and behind-the-meter applications.
• Strong communication skills and a consultative approach to solution development.

KPI Description Target/Metric
BESS Project Win Rate Customer proposals converted into signed projects. 30%
Proposal Turnaround Time Time from customer request to full technical/economic proposal. 7 business days
System Design Accuracy Rate of post-sale changes due to design or modeling errors. < 5%
Customer Technical Satisfaction Rating of solution clarity, responsiveness, and accuracy. 85%
Commissioning Support Efficiency Time to fully operational and validated system post-shipment. 4 weeks…