Mariah Shepherd serves as the President of ACE Companies, a multi-division enterprise specializing in petroleum distribution, industrial supply (MRO), and advanced energy solutions. As a dynamic executive leader, she is responsible for overseeing corporate strategy, operational excellence, and large-scale contract execution across federal, state, and municipal markets. Under her leadership, ACE Companies has expanded its footprint as a trusted government partner, delivering mission-critical products and services to agencies including the City of Detroit, the Detroit Water and Sewerage Department (DWSD), and federal procurement platforms such as the General Services Administration (GSA). Mariah plays a central role in aligning the organization’s capabilities
with national procurement standards, ensuring compliance, scalability, and high-performance delivery across all divisions.

     Mariah oversees the strategic integration of ACE Companies’ core operating units: - Ace Petroleum Distribution Corp – Fuel, lubricants, and energy logistics - Ace Restoration Industrial Supply – MRO distribution with over 2.4 million products available - SJ Power Solutions – Advanced battery technologies, including Group 31 energy systems. With a strong focus on operational efficiency and supply chain innovation, she has helped position ACE Companies as a competitive force alongside major national distributors, while maintaining the agility and responsiveness of a certified small business enterprise. Her leadership emphasizes performance accountability, supplier diversity impact, and long-term cost savings for government clients.

     Mariah is also instrumental in driving the company’s federal growth strategy following the award of its GSA Multiple Award Schedule (MAS) contract, enabling ACE Companies to scale nationwide and compete for high-value federal opportunities. Her forward-looking approach includes expanding into defense, infrastructure, and energy resilience markets. Known for her disciplined leadership style and commitment to excellence, Mariah Shepherd continues to elevate ACE Companies into a premier, multi-sector government contractor—delivering reliability, innovation, and measurable value at every level of engagement.