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Jobs at FlexGen (Now Hiring) — 2 open

FlexGen logoFlexGen

Application Engineer - Data Center

Durham, North Carolina, United States · On-site

Mid level$358M raised

Position Description: FlexGen is seeking an Energy Storage Application Engineer to support the development and delivery of cutting-edge energy storage projects. In this role, you will partner with our Business Developmen…

Skills: Energy Storage System Design, Power System Analysis, Technical Sales Engineering, Customer Engagement, System Sizing

FlexGen logoFlexGen

Senior System Engineer - Data Center Solutions

Durham, North Carolina, United States · On-site

Senior$358M raised

Position Description: The Senior System Engineer will serve as the main technical resource for deployment readiness efforts on key data center use case solutions efforts during their initial period with the company. Even…

Skills: Data Center Solutions, BESS Architecture, SCADA, Electrical Distribution Systems, AutoCAD

FlexGen logo

Application Engineer - Data Center

FlexGen

Durham, North Carolina, United States • On-site

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Mid level

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  • Full-time
  • associate degree, bachelor degree, professional certificate
  • Posted 51d ago
  • ~40 hrs/week

Responsibilities

Provide pre-sales engineering and technical expertise for Energy Storage Systems and the HybridOS Energy Management System. Act as a technical advisor to customers to ensure solutions meet both technical and commercial requirements from development through execution.

Requirements

Requires an associate degree in Engineering or equivalent experience with strong aptitude in electrical or power systems. Preferred candidates hold a bachelor's degree in a relevant engineering field and have experience with utility-scale power projects.

Full job description

Position Description: FlexGen is seeking an Energy Storage Application Engineer to support the development and delivery of cutting-edge energy storage projects. In this role, you will partner with our Business Development and Technical Support teams to provide pre-sales engineering, system design guidance, and technical expertise for Energy Storage Systems and FlexGen’s Energy Management System (EMS), HybridOS.

You will act as a trusted technical advisor in customer engagements—bridging hardware, software, and market applications—to ensure FlexGen delivers solutions that meet both technical and commercial needs. From project development and opportunity evaluation through contract execution, you will help drive adoption of FlexGen’s industry-leading EMS and BESS solutions.

Major Job Responsibilities:

  • Technical & Project Support
    • Support preliminary ESS design, system sizing, and power system analysis.
    • Provide technical guidance on energy storage solutions during project development and pre-sales phases.
    • Collaborate with system engineering and software engineering teams to ensure accurate technical solutions.
    • Partner with the Sales and Business Development teams to position HybridOS™ EMS and ESS solutions for new opportunities.
    • Partner with Business Operations team to prepare and deliver technical presentations and proposals highlighting EMS and BESS capabilities, system performance, and integration benefits.
    • Serve as a subject matter expert in customer meetings, demonstrating the value of FlexGen’s EMS and BESS solutions
  • Customer & Market Engagement
    • Serve as a technical point of contact for customers, supporting system design, interconnection requirements, and market-specific considerations.
    • Partner with the Business Development team to identify strategic opportunities and provide technical input for proposals.
    • Contribute to project estimations and cost modeling for ESS projects.
  • Commercial Support
    • Assist in contract negotiations by ensuring technical requirements are accurately reflected in agreements.
    • Provide clear technical documentation and responses to customer inquiries during proposal and contracting stages.

Position Requirements:

  • Utilize AI-driven tools and workflows to streamline processes, automate tasks, and improve overall performance.
  • Associate degree in Engineering or equivalent relevant experience.
  • Strong technical aptitude in electrical or power systems engineering.
  • Excellent listening, communication, and customer engagement skills.
  • Ability to manage multiple priorities and remain professional under pressure.
  • High proficiency in Microsoft Excel.
  • Valid driver’s license and willingness to travel.
  • Ability to pass background and toxicology screening.

Preferred:

  • Bachelor’s degree in Electrical, Mechanical, or Power Systems Engineering.
  • Professional certification or license (e.g., EIT, PE, PMP).
  • Experience with AutoCAD, PowerBI, Visual Basic, Microsoft PowerPoint.
  • Prior experience in energy storage, renewable energy, or utility-scale power projects.
  • Familiarity with grid interconnection requirements and utility/ISO processes.
  • Exposure to contract negotiation or technical sales engineering.

FlexGen provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, FlexGen complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. 

FlexGen expressly prohibits any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. 

To the extent permitted by law, employees are subject to periodic random drug testing, and post-accident and reasonable suspicion drug and alcohol testing. 

Related keywords

Energy Storage SystemsBESSEMSHybridOSPower Systems EngineeringElectrical EngineeringGrid InterconnectionISO ProcessesUtility-Scale PowerRenewable EnergyEITPEPMPAutoCADPowerBIVisual Basic

About FlexGen

LinkedInVisit site

Leading Energy Storage Technology Solutions

Industry
Software Development
Company size
201-500 employees
Founded
2009
Headquarters
Durham, North Carolina
LinkedIn followers
24,946
Total funding
$358M

FlexGen delivers the best integrated energy storage systems by taking a functionality and software-first approach. We fundamentally turn battery energy storage systems on, deliver advanced functionality through the HybridOS™ energy management system platform, and integrate with the best energy storage hardware systems available. We are hardware agnostic and have flexible approaches to delivering systems that empower our customers to procure hardware or FlexGen to provide hardware as part of a complete system solution.

Offices: 280 S Mangum St, Durham, North Carolina 27701, US · 302 E Atlantic Ave, Delray Beach, Florida 33483, US

Solar + StorageFlexible GenerationBattery Energy Storage SolutionsIntegrationBatteriesIntegration SoftwareEnergy Trading PlatformUtility Scale Backup PowerEnergy TransitionEnergy Storage
View all jobs at FlexGen

About FlexGen

LinkedInVisit site

Leading Energy Storage Technology Solutions

Industry
Software Development
Company size
201-500 employees
Founded
2009
Headquarters
Durham, North Carolina
LinkedIn followers
24,946
Total funding
$358M

FlexGen delivers the best integrated energy storage systems by taking a functionality and software-first approach. We fundamentally turn battery energy storage systems on, deliver advanced functionality through the HybridOS™ energy management system platform, and integrate with the best energy storage hardware systems available. We are hardware agnostic and have flexible approaches to delivering systems that empower our customers to procure hardware or FlexGen to provide hardware as part of a complete system solution.

Offices: 280 S Mangum St, Durham, North Carolina 27701, US · 302 E Atlantic Ave, Delray Beach, Florida 33483, US

Solar + StorageFlexible GenerationBattery Energy Storage SolutionsIntegrationBatteriesIntegration SoftwareEnergy Trading PlatformUtility Scale Backup PowerEnergy TransitionEnergy Storage
View all jobs at FlexGen

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