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Leadership Team

At Shapiro & Duncan, we have more than 400 talented and knowledgeable industry professionals who take pride in their ability to leverage the latest in computer hardware and software, advanced fabrication equipment and the technology tools of the trade to maximize infrastructure life cycle and return-on-investment for clients. Guiding this dedicated group are the members of the Shapiro & Duncan Leadership Team:

  • Jerry Shapiro President
  • Charlie Ayres Chief Operating Officer
  • Ron Churchey Vice President of Construction
  • Kirsty Mastroni CFO
  • Chris Canter Director of Virtual Design Construction and Fabrication
  • John Main Director of Estimating
  • Justin Poka Director of IT
  • Sandy Palmerton Director of Special Projects
  • John Wildasin Director of Purchasing
  • Leslie Titcomb Director of Commercial Service
  • Sarah Mueller Director of Human Resources, SHRM-CP
  • Nick Lowe Superintendent
  • Billy Campbell Superintendent
  • Don Zeiders Director of Business Development and Preconstruction
  • Dan Zimmerman Director of Engineering
Jerry Shapiro became President of Shapiro & Duncan in 1993, after mastering the economics of the mechanical contracting business as a member of our estimating team from 1978 to 1993. As President, Jerry oversees business development activities as well as operations of the Service, Design Build and Estimating Departments. He also reviews and approves final bids and job cost budgets. In addition, he takes a lead role in communication with subcontractors, vendors and general contractors. Jerry has a Bachelor of Science in Electrical Engineering from the University of Maryland.
With more than 20 years of industry experience, Chief Operational Officer Charlie Ayres oversees the Construction, Service and Special Projects departments, making sure S&D’s operational processes fit our corporate strategic objectives and quality standards. Since the Purchasing and Engineering departments constitute integral parts of Shapiro & Duncan’s operations, Charlie will work closely with the respective teams to ensure smooth projects deliveries and accurate material procurement. Charlie began his career at Shapiro & Duncan in 1989 and quickly moved up to Assistant Project Manager, Quality Control Manager, Estimator, Project Manager and Vice-President of Special Projects. Charlie graduated cum laude with a Bachelor of Science in Electrical Engineering from Capitol College.
Ron Churchey, our Vice President of Construction since 2010, plays a critically important role on the leadership team by ensuring all projects are completed on time, within budget and in accordance with Shapiro & Duncan’s quality standards. He has guided our project management teams, Planning and Field Operations to successful completion of high-rise residential, office, government/military, school, hospital and hotel construction projects. In addition to developing and updating project management strategies, policies and procedures, he also assists the Estimating Department in reviewing and analyzing bid proposals and vendor/subcontractor qualifications. He is LEED AP certified by the U.S. Green Building Council.
Originally from the United Kingdom, Kirsty Mastroni graduated from Napier University and obtained her ACCA/FCCA qualification (equivalent to CPA) before moving to the United States.  Joining the Shapiro & Duncan team as the Accounting Manager in May 2015, Kirsty’s wide range of industry experience is comprised of financial, administrative, voluntary sector, welfare, analytical sciences and retail. Additionally, Kirsty holds a certification in International Financial reporting and is currently working towards obtaining her Certified Construction Industry Financial Professional certification. Her supervisory responsibilities includes yearly financial productions, accounts payable, job cost functions and payroll. Kirsty is a member of Construction Financial Management Association and the Association of Chartered Certified Accountants.
Chris Canter holds an A.S.in Applied Science CAD/CADD Drafting from Chesapeake College and certifications in Autodesk Fabrication MEP, Revit & Navisworks. He started his career as a welders apprentice working on large commercial HVAC Piping systems. In 1999, Chris moved into a Pipe Fabrication Designer role. As the company continued to grow, a larger facility was needed. In 2007, Shapiro & Duncan’s fabrication shop was moved to Landover, MD and the Virtual Design/Planning department was added. Chris managed and grew a team of VDC Coordinators for six years before his promotion in 2016 as Director of Virtual Design and Fabrication. Chris works closely with the Vice President of Construction, Production Managers and Project Managers to understand upcoming workload; and provide input and recommendations for VDC and Fabrication support on all projects. In addition, he works with the Fabrication Manager, Sr. Quality Control Manager and Tool/Warehouse Manager to implement efficiencies and help balance daily work with overall capacity.
John Main brings more than 21 years of experience in the mechanical contracting trades to his role as Director of Estimating. His supervisory responsibilities include decisions on what projects to bid, reviewing bid schedules, helping estimators select subcontractors and equipment vendors, communicating with subcontractors and vendors prior to bid submission, negotiating prices with subcontractors and vendors, and supervising job turnover to our project management teams. Holder of numerous HVAC-related licenses and certifications, John is a graduate of Rapport Leadership Core Training.
Justin Poka ensures that cost-efficient IT systems are in place and in align with corporate strategic objectives and supervises "help desk" operations. He makes certain that all systems, software, and networks are secure and that end-users needs are served. Justin works with various consultants to advise and coordinate the acquisition, upgrade and repair of major computer hardware and software. He holds a bachelor’s degree in Engineering from Ekiti State University.
Sandy Palmerton brings over 21 years of industry experience in mechanical and plumbing. She joined the company in 2003 as a project coordinator and within 5 years was promoted to Project Manager then subsequently to Senior Project Manager. In 2019, she leads the Special Projects Department where her primary duties include supporting, mentoring and leading the 50- person team that includes estimators, project managers, assistant project managers, project coordinators, jobsite superintendents and craftspeople. She is responsible for ensuring that the department is performing in accordance with the company’s corporate values and fiscal expectations. By installing and enhancing systems and personnel, she aims to achieve department and company goals.
As Director of Purchasing since 2004, John Wildasin supervises a staff of professional purchasing agents. He oversees procurement of fixtures, drains, water heaters, rough material, vehicles, equipment and tools as well as purchases for new construction, for special projects and for the HVAC Service & Controls divisions. He also assists in submittal and review processes for all jobs, and in preparation of operations and maintenance (O & M) manuals. In addition, John directs building maintenance at our Rockville headquarters, is responsible for all company cell phones and prepares vehicle and fuel usage reports. John holds certifications from the American Purchasing Society and is a Certified Purchasing Professional and Certified Professional Purchasing Manager. John earned his BBA in Business Management from Radford University.
Leslie Titcomb brings more than 29 years of HVACR and plumbing trade experience. In 2017, she joined Shapiro & Duncan as Commercial Service Manager for the service department overseeing over $4M in contracts. She is responsible for managing our contract sales team, service office personnel and 25 HVAC service technicians in the field. She took several business courses at George Mason University and West Virginia University and was the Treasure for five years for the National Organization of Women in HVAC. Leslie cares deeply about the community. She actively serves on the rotary club, as a board member for the Montgomery County Salvation Army and volunteers for Junior Achievement.
Sarah Mueller graduated from the University of Maryland University College (UMUC) with a B.S. in Human Resources and began her career with the company in 2001 as a HR/Education Coordinator. In 2007, Sarah was promoted to HR/Education Manager. As director, she develops recruiting and retention strategies; designs and administers compensation and benefit programs; manages various aspects of legal compliance; handles employee relations matters; and is actively involved in a variety of aspects of risk management. As part of her role, Sarah oversees our Safety Department and serves as the EEO/Affirmative Action Officer, Ethics Officer and Plan Administrator for Shapiro & Duncan’s benefit plans. Sarah also obtained her certification as a Professional in Human Resources (PHR) and SHRM-CP.
With over 21 years of industry experience, Nick Lowe first started his career as steel fabricator, and welder. He joined Shapiro & Duncan as a Foreman in 2012 supervising and coordinating all phases of plumbing and HVAC Installations. In 2015 he was promoted to Superintendent and is responsible for production scheduling, safe work practices, application of arithmetic principles, process compliance and administrating, management, coaching and mentoring. Nick’s leadership helped Shapiro & Duncan achieve their most aggressive schedule to date, a large-scale data center, in record timing (5 months). The project included 18,000 feet of welded-steel HVAC piping, 30,000 weld inches and 60 tractor-trailer loads of piping delivered to the job site.
Billy Campbell brings more than 24 years of trade experience, mechanical and plumbing. In 1995, he joined Shapiro & Duncan as a Helper and  within 10 years moving up to Foreman, supervising and coordinating all phases of plumbing and HVAC installations. In 2013, Billy was  leading  a crew of over 200+ trades craftsmen and women on our largest project to-date, INOVA Women’s and Children’s Hospital Project. His team installed 76 miles of pipe, finishing under budget and on schedule despite a defaulted electrician and an Ebola scare. More importantly with his leadership, Shapiro & Duncan earned their first National Associated Builders and Contractors Excellence in Construction Eagle Award. Currently, as Superintendent, Billy oversees 160 field employees to help insure jobs move efficiently as possible. 
Don Zeiders brings more than 28 years of experience in the mechanical contracting trades to his role as Director of Business Development and Preconstruction. He joined the company in 2016 as a Preconstruction Associate and then Preconstruction Project Executive, Don’s primary responsibilities include decisions on which projects to pursue, reviewing pursuit schedules, overseeing business development, and coaching the preconstruction team, developing relationships with clients, subcontractors and equipment vendors. As Director of Business Development, Don also coordinates all of Shapiro & Duncan’s business unit’s marketing and business development efforts.
Dan Zimmerman is the Director of Engineering for Shapiro & Duncan, Inc. His responsibilities include supporting design-build project pursuits, strategic planning, process development and overseeing the daily operations of the Engineering Department. Dan works closely with all facets of the company to drive collaboration, innovation, design and construction excellence with a commitment to schedule and budget. Dan joined the company as a student intern in 2005 while attending Montgomery College. Dan earned a Bachelor of Science in Mechanical Engineering from the University of Maryland, College Park in 2008. He maintains membership and participation with local chapters of ASHRAE, ASPE and DBIA. Dan also holds professional licensure in Maryland, District of Columbia and Virginia.