Demo

Proposal Manager

FlexGen
Durham, NC Full Time
POSTED ON 3/27/2026
AVAILABLE BEFORE 4/24/2026
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: The Proposal Manager is responsible for the commercial management of battery energy storage system (BESS) proposals that are presented by customers on a daily basis. This role works closely with teams including application engineering, business development, procurement, and other specialized services to ensure that the proposal is developed within the Customer's Request for Proposal (RFP) guidelines and specifications while maintaining continency with our company's strategy and standards. The Proposal Manager oversees all aspects of proposals including pricing, commercial questions, and documentation, and maintains sales team communications and relationships. The position reports to the Senior Proposal Manager and other senior management personnel the company may designate.

Major Job Responsibilities

  • Lead, manage, and support development of integrated, enterprise-wide sales proposals and initiatives
  • Oversee all activities involved in the drafting and document preparation of Requests for Information (RFI), Requests for Qualifications (RFQ), and Requests for Proposals (RFP) to clients and prospects, including proposals and qualification packages
  • Manage multiple projects simultaneously and complete all projects by customer-designated bid dates
  • Collaborate and lead engagements with the business development team and application engineering team to produce proposals to clients
  • Coordinate development and production of materials with technical staff for proposal and executive report presentations as needed
  • Strategize and document proposals and pipeline in Salesforce

Position Requirements

  • Bachelor's degree in related field (Business, Engineering, Marketing, or related)
  • A minimum of 3-5 years of proposal management or similar experience
  • Strong written and editorial skills
  • Ability to communicate effectively with a commitment to detail
  • Proficiency in Microsoft Office (Word, Excel, and PowerPoint) and Adobe Acrobat
  • Knowledge in BESS, Energy, or similar field is a plus
  • Capability to work non-traditional hours to accommodate workload and delivery of deadline-driven proposals
  • This is a temporary role with the opportunity for permanent conversion based on performance and business needs

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.

Salary.com Estimation for Proposal Manager in Durham, NC
$114,135 to $146,476
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

Sign up to receive alerts about other jobs with skills like those required for the Proposal Manager.

Click the checkbox next to the jobs that you are interested in.

  • 3D CAD Skill

    • Income Estimation: $301,527 - $500,788
  • Business Development Skill

    • Income Estimation: $250,488 - $395,618
    • Income Estimation: $331,342 - $646,408
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at FlexGen

  • FlexGen Delray Beach, FL
  • 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 e... more
  • 10 Days Ago

  • FlexGen Durham, NC
  • 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 e... more
  • 14 Days Ago


Not the job you're looking for? Here are some other Proposal Manager jobs in the Durham, NC area that may be a better fit.

  • Carimus Raleigh, NC
  • About Carimus & The Role We are Carimus, a brand experience and digital transformation agency, now proudly part of the Spyrosoft Group. Since 2013, we've b... more
  • 27 Days Ago

  • Veeva Systems Raleigh, NC
  • Veeva Systems is a mission-driven organization and pioneer in industry cloud, helping life sciences companies bring therapies to patients faster. As one of... more
  • 28 Days Ago

AI Assistant is available now!

Feel free to start your new journey!