Sr. Director, Controller
Chestnut Carbon
Paul Aaron is a senior accounting and finance leader with deep experience supporting fast-growing, private equity–backed organizations. Currently Senior Director and Controller at Chestnut Carbon, he oversees accounting, financial reporting, audit readiness, and core back-office operations, with a focus on building scalable, efficient finance functions.
Paul has led complex system implementations including NetSuite and high-volume AP automation, and is known for his pragmatic approach to technology and AI adoption, cutting through hype to focus on tools that deliver real operational value. His career spans education, sustainability, and data-driven businesses, where he has progressed from staff accountant roles to senior leadership positions.
With an exit-minded mindset, Paul specializes in lean team design, thoughtful headcount planning, and balancing automation with human expertise to support growth while maintaining operational discipline.