AP​/AR Manager

Accounts Payable/Accounts Receivable Manager

Based in Durham, N.C., Flex Gen is an innovative software and services provider in the global energy storage sector. At the forefront of the energy transition, Flex Gen leverages decades of engineering and software expertise to help shape the future of sustainable power both in the United States and globally. Flex Gen'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™, Flex Gen 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.

Flex Gen is seeking an accounts payable/accounts receivable manager to perform our company's payable and receivable duties and lead system and process changes to improve our efficiency. The AP/AR manager will be responsible for maintaining all aspects of vendor and customer management including on-boarding, day-to-day AP/AR invoice processing, and AP payment runs.

• Lead the day-to-day accounts payable and accounts receivable functions, ensuring transactions are processed accurately, timely, and in accordance with company policies and accounting standards
• Own the end-to-end procure-to-pay process, including onboarding new vendors, invoice processing, approval workflows, vendor payments, vendor aging's/account reconciliations, and resolution of payment-related issues
• Review and approve vendor payment runs
• Prepare annual 1099s
• Own the end-to-end order-to-cash process, including onboarding new customers, contract billing set up in Net Suite's Suite Billing, project invoicing, cash application, customer aging review, and resolution of billing/payment discrepancies
• Management of the AP and AR inboxes to respond to all vendor and customer inquiries and concerns in a timely manner
• Proactively partner with operations, sales, and finance teams to resolve customer or vendor issues
• Prepare journal entries, as needed, related to vendor payments, bill credits, foreign currency transactions, and other accounting activities
• Serve as primary owner of Tipalti AP automation software, Net Suite/Tipalti connection, and Net Suite AR module, including workflows, reporting, data integrity, and process enhancements
• Support our monthly, quarterly, and annual close processes by completing AP & AR reconciliations, related party journal entries, AP accruals, and other AP/AR related account activity
• Identify, design, and implement process efficiency, strengthen controls, improve scalability, and reduce manual activity across AP and AR

• 3+ years of progressive accounts payable experience in a fast-paced environment
• Demonstrate intermediate skills and knowledge of Excel, as well as other Microsoft Office applications
• Experience with Net Suite and Tipalti preferred, but not required
• Willingness to work cross-functionally with other teams, including Operations, Sales, and FP&A
• Utilize AI-driven tools and workflows to streamline processes, automate tasks, and improve overall performance
• Excellent communication skills, both verbal and written
• Strong problem-solving and time management skills
• Ability to work 2days per week from Durham, NC HQ
• Desire to work in a fast-paced environment

Flex Gen 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, Flex Gen 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.

Flex Gen 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.