Senior Application Engineer – Data Center Focused

About FlexGen

Based in Durham, N.C., FlexGen is an innovative software and services provider in the global energy storage sector. At the forefront of the energy transition, FlexGen leverages decades of engineering and software expertise to help shape the future of sustainable power both in the United States and globally. FlexGen's HybridOS™ software seamlessly integrates with any hardware vendor and with both traditional and renewable power sources.

Our advanced analytics and AI-driven insights enable energy storage owners to effectively deploy diverse power market strategies and integrate various generation forms, enhancing grid stability and increasing economic returns. With 1.5M hours of runtime and 8 GWh of energy storage systems managed with HybridOS™, FlexGen provides field-tested software and services solutions that are trusted by the most technically and commercially demanding developers, utilities, government agencies, and industrial companies in the world.

Position Description:

FlexGen is seeking a skilled Application Engineer to support data center-related project development, pre-sales, and engineering services in energy storage. This role requires a technical expert who can take ownership of pre-sales engineering topics, collaborate with internal teams, and provide guidance on energy storage system (ESS) solutions tailored for data center applications. The ideal candidate will have a strong understanding of power systems, energy storage integration, and grid technologies, enabling them to support system design, interconnection, and market analysis.

Major Job Responsibilities:

• Develop a deep understanding of data center power and energy requirements and their relationship with energy storage applications.
•   Design, configure, and integrate energy storage systems for various applications, including commercial, industrial, and utility-scale projects.
• Serve as the technical liaison between customers and FlexGen’s internal teams, supporting system design, interconnection processes, and market analysis with a focus on data center use cases.
• Conduct technical assessments and performance analyses of energy storage systems to optimize efficiency, reduce costs, and improve reliability.
• Collaborate with the business development team, providing technical expertise in customer meetings, presentations, and proposal development.
• Assist in identifying strategic opportunities for energy storage in data centers and support the business development team in shaping new market strategies.
• Support the contract negotiation process, ensuring alignment with technical requirements and business objectives.
• Provide training and technical support to customers and internal teams on energy storage solutions and best practices.

Position Requirements

• Bachelor’s degree in electrical engineering, Power Systems, or a related field.
• 5+ years of experience in energy storage, power systems, or a similar industry.
• Strong understanding of inverter-based resource technology and associated control strategies.
• Proven ability to conduct power system analyses, system integration, and energy storage system optimization.
• Experience in project management and customer support, particularly in the energy storage or power industry.
• Strong analytical and problem-solving skills, with the ability to diagnose and resolve complex technical issues, excellent communication skills, with the ability to convey complex technical concepts to both technical and non-technical audiences.
• Ability to work effectively in a fast-paced, dynamic environment with minimal supervision.

Preferred Qualifications:

• Master’s degree or higher in Electrical Engineering, Power Systems, or a related field.
• Hands-on experience in inverter control, power plant controller dynamic modeling, and simulation.
• Familiarity with energy market structures, interconnection processes, and grid compliance requirements.
• Experience working wit