Our Team

From our account managers and support personnel to senior executives,  AUM’s dedicated team maintains a total commitment to multifamily energy management. We leverage this commitment with unmatched expertise in property management and bill processing to provide peerless cost-saving services to the multifamily industry.


  • Michael Miller

    Chief Executive Officer

    Mr. Miller joined AUM in 2000 as an Executive Vice President and was named President in 2001. Before joining  AUM, Michael worked in  property management and was Vice President, Asset Management for AMLI Residential Properties, a Chicago-based REIT.

    Michael oversaw the expansion of AUM from a small regional utility conservation company, focused on resident billing and utility submetering services, to a national energy management services provider offering invoice processing and energy procurement services.

    In addition to his responsibilities as President of AUM, Michael serves on the Board of Directors of the National Multi Housing Council (NMHC), a participating member of the Data Taxonomy Group funded by the MacArthur Foundation, and has held similar positions with industry groups such as the Chicagoland Apartment Association.

  • Bob Malpasuto

    Bob Malpasuto

    Chief Financial Officer

    Mr. Malpasuto joined AUM in July, 2000 as Executive Vice President of Finance and Technology. Before this he spent five years at AMLI Residential Properties as Chief Information Officer. Prior to joining AMLI, Bob spent four years at Starwood Lodging as Director of Financial Development.

    With his financial and technological expertise, Bob has helped AUM develop the multifamily industry’s leading platform for resident billing and utility management services. By employing a robust and infinitely scalable Oracle-based system, AUM is the only provider in the industry housing all of these services on the same platform.

    In addition to overseeing systems development at AUM, Bob helped create our highly sophisticated Invoice Processing Service, which today processes over 100,000 invoices a month while eliminating late fees and  capturing consumption and cost data to a degree and detail that is unmatched in the multifamily industry.

  • Dave CarpenterDave Carpenter

    Chief Strategic Officer

    Mr. Carpenter is the product development executive responsible for the creation and enhancement of strategic processes, systems, interfaces and reports of all AUM Products and Services. He is our resident expert in bill payment, system interfaces and data exchange, submetering, web and custom reporting, vacant cost recovery and utility invoice data capture and analysis.

    Dave came to AUM in 2002 from Higgins Development, where he  provided civil engineering services for residential and commercial properties. He began at our engineering department, where he handled meter installation, repairs, billing and customer support. In this role, he developed the multi-housing industry’s first meter diagnostic report. In 2005, Dave  initiated invoice pay processing services for AUM that build, test and implement interfaces, controls procedures, work flows, staffing, and metrics.

  • Dimitris KapsisDimitris Kapsis

    Executive Vice President and Chief Energy Officer

    Before joining AUM in 2008,Mr. Kapsis worked in the property Management industry and served as Director, Energy management for Archstone, a Denver-based property ownership and management firm.

    Dimitris has helped AUM grow into a  national energy management services provider that offers energy management planning, facilities audits and energy procurement services.

    Dimitris is also active in the Association of Energy Engineers (AEE) and the American Society of Heating, Refrigerating and Air-Conditioning (ASHRE). He also holds several professional certifications, including Certified Energy Manager (CEM®) and Certified Energy Procurement Professional (CEP®).

  • Joe StackhouseJoe Stackhouse

    President and Chief Operating Officer

    Joe oversees all daily operations regarding Resident Services, Invoice Processing, new client implementation, customer service, and all of their surrounding supporting services.

    Joe’s background includes over 20 years of managing the end-to-end customer experience, and includes expertise in call center operations, service delivery, customer management systems, sales and full P&L management. Prior to joining AUM, he was a Senior Vice President, Customer Operations at Charter Communications. In this position, he was responsible for the customer experience of over 5 million residential and commercial voice, video and data customers, generating over $6 billion in annual revenue. Other previous roles included Senior Vice President at Comcast Corporation, and Senior Vice President at AT&T Broadband.


  • Pat Bosi

    Pat Bosi

    Executive Vice President, People and Performance

    Ms. Bosi  joined AUM in July, 2010, after eighteen years with American General Insurance Company. Her foundation in Human Resources enabled Pat to run the operations of AGIC, including claim and policy administration, the call-center and client management teams.

    Pat brings her experience in building and leading successful, goal oriented teams while overseeing budgets and resources to AUM, bridging necessary leadership skills with a drive to achieve operating efficiencies and bottom line results.

    Pat is certified as a Professional in Human Resources (PHR) and has Six Sigma Green Belt certification.  She is a strong change manager, committed to mentor and develop staff to reach their full potential. 

  • Jeffrey PetersonJeffrey Peterson

    Executive Vice President-General Counsel

    Peterson began his career with AUM in the Engineering Department where he applied his expertise in Civil Engineering to submetering. With the assistance of  our paralegals, Jeff compiled an extensive index of regulations dealing with all types of utility billing.

    Jeff was an active member of the National Submetering and Utility Allocation Association (NSUAA). Today he is the President of the Utility Conservation Coalition (UCC), a group of utility industry leaders whose sole focus is lobbying  and legislation review.

    Jeff supervises or processes all regulatory matters for AUM, from property start-up review to governmental agency investigations. He holds regular dialogues with agencies such as NCUC, TCEQ, California DMS, as well as various state consumer protection departments.

  • Patrick Ahern

    Executive Vice President, Finance

    Mr. Ahern oversees the daily financial operations for AUM.  In addition, Pat helps our clients with AUM Invoice Processing services—establishing program guidelines and optimizing their financial processes using AUM’s suite of financial reporting tools.

    Pat has been with AUM since 2008 and has more than fifteen years of extensive corporate finance experience. Prior to joining AUM, he worked at Accenture, a global management consulting, technology and outsourcing company. At Accenture he led the financial forecasting and reporting for Accenture’s Global Marketing and Communications organization with focus on cost containment and process improvement.