Choose MC3 Solutions for High-Quality, Professional Workmanship

Planning & Quality Control Set Us Apart

MC3 Solutions, LLC is comprised of engineers and contracting managers who understand quality assurance and control practices, demand safety over production, and encourage growth from each tradesman within our crews.

MC3 Solutions is led by Zach Walters and Billy O’Neil, two combat veterans who bring disciplined leadership, rigorous operational standards, and a data-driven approach to government construction. Under their direction, MC3 integrates technical expertise with uncompromising quality and safety practices, ensuring every project is executed with precision and accountability. Zach and Billy have strengthened MC3’s project management systems, elevated performance expectations, and built a culture where tradesmen and managers grow through high standards, mentorship and ownership. The company delivers full-scope construction and engineering services for federal, state, and private-sector clients across the East Coast, with a focus on reliability, transparency, and elite execution. Built by combat veterans. Driven by results.

Meet Our Team

MC3 Solutions, LLC is a Service-Disabled Veteran-Owned Small Business (SDVOSB) delivering full-scope construction and engineering services with disciplined project management, technical expertise, and a deep commitment to safety and quality. Backed by licensed engineers and certified project managers, we lead with integrity to deliver smart planning and lasting results. Elite execution in government construction. We manage complex projects with precision, speed, and zero excuses. Built by combat veterans. Driven by results.

Zach Walters
Zach WaltersCo-President & Owner
Zach Walters is a graduate of UCLA Anderson, where he earned his Master of Business Administration after completing over a decade in Naval Special Operations (SEAL). He brings a combination of operational leadership and financial expertise to the government contracting and construction industry. Zach began his post-military career in investment banking, where he spent three years advising on acquisitions, growth financing, and operational improvements for middle-market companies. After banking, he focused on identifying, acquiring, and scaling construction and infrastructure businesses. Zach now serves as Co-President and Owner of MC3 Solutions, where he applies a data-driven management approach that drives the successful execution of complex federal and state construction projects across the Mid-Atlantic and Southeast regions.
Billy O'Neil
Billy O'NeilCo-President & Owner
Billy O’Neil is a graduate of The Wharton School, where he earned his Master of Business Administration following a distinguished career in Marine Special Operations. He has extensive experience leading complex operational, logistical, and construction efforts in demanding environments. After 14-years of military service, Billy worked in private equity operations, concentrating on improving performance and driving disciplined execution within portfolio companies. He later transitioned into the government construction sector, leveraging his background in infrastructure planning, contractor oversight, and field leadership. Billy now serves as Co-President and Owner of MC3 Solutions, overseeing operations and performance management across federal and state infrastructure projects throughout the Southeast and Mid-Atlantic.
Jessica RiggDirector of Preconstruction
David MitchellDirector of Operations
Cindy CollinsDirector of Finance