Meet the Team
Our Team Members
Zach Abrams
President & Owner
Zach Abrams
President & Owner
Zach is a trusted leader with more than 17 years of experience supporting the U.S. Department of Energy (DOE). He has played a central role in shaping and managing DOE’s Better Buildings & Better Plants Initiative, which helps organizations across sectors overcome barriers to greater energy efficiency and supports industry-led innovation to develop and de-risk technologies. As founder of Fidelium Consulting, Zach oversees the full contractor support team for the Better Buildings & Better Plants Initiative—coordinating the work of more than 50 professionals across multiple partner organizations. Under his leadership, the team delivers strategic, analytical, and technical assistance that helps DOE partners achieve measurable progress toward their goals. Known for his steady, collaborative approach, Zach works on a daily basis to earn the respect of his clients and colleagues. His experience spans account management, program design, operations, and stakeholder engagement, all grounded in a commitment to advancing practical, results-oriented solutions that make a lasting impact. Zach holds an MPP from the University of Southern California and a BA from the University of Michigan.
Marcel Hovsepian
Operations Director
Marcel Hovsepian
Operations Director
Marcel brings over 20 years of leadership experience in operations, project management, and organizational strategy. A certified Project Management Professional (PMP), Marcel has successfully partnered with local, state, and federal governments, as well as nonprofit and private-sector organizations, to deliver impactful, sustainable solutions across diverse sectors. He has led major initiatives including the overhaul of vendor evaluation processes, collaborating closely with cross-functional teams in security, legal, product, and operations. Marcel has also directed formal assessments of compliance programs and overseen resource planning and workload management for business technology operations teams, ensuring operational efficiency and strategic alignment. Marcel has vast experience bridging operations between multiple organizations to deliver complex, multi-stakeholder initiatives that drive measurable impact and lasting improvement. His career is defined by a commitment to improving organizational performance, optimizing processes, and driving innovation through collaborative leadership. Marcel holds an MPP from the University of Southern California and a BA from the University of California-Los Angeles.
Brooke Siegel
Director of Partnership Programs
Brooke Siegel
Director of Partnership Programs
Brooke supports the U.S. Department of Energy’s Better Buildings & Better Plants Initiative. In this role, she works closely with the program’s leadership team to coordinate cross-program efforts and advance strategic goals. Brooke brings a deep commitment to developing practical, results-driven solutions to environmental and organizational challenges, drawing on years of federal experience at the U.S. Environmental Protection Agency (EPA) and the Federal Bureau of Investigation (FBI). At the EPA, she served as a Special Advisor for Implementation, helping to advance priority initiatives across the agency. Prior to joining the EPA, Brooke served as the FBI’s Sustainability Program Manager where she led key programs related to high performance buildings, reliability, and solid waste and recycling. Brooke holds an MA in Environmental Resource Policy from the George Washington University and a BA in Environmental Studies and Urban and Community Studies from the University of Connecticut.
Lindsey Moore
Program Delivery Consultant
Lindsey Moore
Program Delivery Consultant
Lindsey supports a range of programmatic, administrative, and technical tasks for the U.S. Department of Energy’s Better Buildings & Better Plants Initiative. She is passionate about advancing energy solutions and helping organizations improve performance and reliability. Prior to joining Fidelium Consulting, Lindsey graduated from the University of Maryland (UMD) with a BS in Environmental Science and Policy and a BA in Economics. While at UMD, she gained experience in environmental policy and advocacy through internships with the U.S. House of Representatives Select Committee on the Climate Crisis and Save Barnegat Bay.
Matthew Flammer
Senior Technical System Specialist
Matthew Flammer
Senior Technical System Specialist
Matt has a 10-year background in complex projects ranging from architectural fabrication to deploying and managing international IIoT deployments. He thrives at the intersection of hardware, software, people, and havoc. At Fidelium, Matt designs frictionless digital ecosystems that connect platforms and people with insights from their data. His focus is supporting the Better Buildings & Better Plants Initiative’s market transformation efforts by solving real workflow problems with elegant architecture, feature development & integration, and process automation. Prior to joining Fidelium, Matt was a Solution Development Engineer & Deployment Director at Shoof Technologies. Matt holds a B.S. in Sustainability Management from the State University of New York College of Environmental Science and Forestry.
Charles Lane
Program Delivery Associate
Charles Lane
Program Delivery Associate
Charles supports the U.S. Department of Energy’s ENERGY STAR transition project at Fidelium Consulting. He is passionate about translating complex energy and policy issues into clear, actionable insights that inform effective decision-making. Prior to joining Fidelium Consulting, Charles built experience in research, federal engagement, and program analysis focused on energy and infrastructure policy, including roles at the Brookings Institution, the Trust for Public Land, and the Kleinman Center for Energy Policy. Charles graduated from the University of Pennsylvania with a BA in Philosophy, Politics, and Economics and a minor in Environmental Management.
Ellie Roberson
Program Delivery Associate
Ellie Roberson
Program Delivery Associate
Ellie joined Fidelium Consulting to support the full transition of the ENERGY STAR program to the U.S. Department of Energy. She is driven by the opportunity to support the development of advanced energy solutions and help individuals and organizations optimize their energy needs. Prior to her current role, she supported an Appalachian Power residential energy efficiency program, helping customers and contractors implement energy-efficient home upgrades that enhance comfort and reduce costs. Ellie holds a B.S. in Environmental Science from the University of Virginia, where she gained valuable experience through internships with the Office for Sustainability and Facilities Management. In these roles, she contributed to initiatives aimed at improving sustainability efforts and increasing awareness of energy-efficient practices across Grounds.
Mackenzie Mathews
Program Manager
Mackenzie Mathews
Program Manager
Mackenzie supports the transition of the ENERGY STAR program to the U.S. Department of Energy. She brings a highly organized, systems-driven approach to managing project workflows, ensuring complex initiatives are executed efficiently and deliver program goals. Mackenzie leverages more than a decade of professional experience, including her most recent eight years of public sector work within the Government of the District of Columbia. She previously served as a program manager in the Affordability and Efficiency Division of the DC Department of Energy and Environment, and subsequently spent over five years as a government auditor. In her auditing career, she specialized in rigorously evaluating and optimizing the effectiveness, efficiency, and accountability of government programs. Mackenzie holds a Master of Public Policy (MPP) from The George Washington University, and a BA in Sustainability from the University of Tennessee.
J Barnabas Lee
Technical Systems Specialist
J Barnabas Lee
Technical Systems Specialist
Barnabas is a data scientist with experience spanning federal consulting, applied research, and public policy. He specializes in developing data-driven solutions that turn complex information into actionable insights. This often takes the form of structured data pipelines, dashboards, geospatial analytics, and workflow automation. At Fidelium, Barnabas implements systems to integrate hierarchical data products into project management and pipelines to facilitate mass data migration in support of the ENERGY STAR program under the Department of Energy. Prior to joining Fidelium, Barnabas supported government clients in the Federal Emergency Management Agency, the Department of Defense, and the Federal Aviation Administration. Barnabas holds an M.S. in Political Science with a focus on the Political Economy of Conflict from Florida State University, and degrees in Economics and Government & Politics from the University of Maryland.
