Denver MBDA Business Center Staff

Operated by the Mountain Plains Minority Supplier Development Council, the Denver MBDA Business Center facilitates greater access to the goods and services of minority-owned businesses for diverse corporate and government entities, thus fostering the development of lasting and mutually beneficial business relationships.

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Randy McCall

Executive Director

Denver MBDA Business Center

Randy McCall joined the staff of the MBDA Center in Denver as the Executive Director in August of 2016. The Denver MBDA Business Center is one of 40 national centers under the Department of Commerce’s Minority Business Development Agency. Mr. McCall was a corporate executive in the banking industry for over 40 years and has extensive experience in community development and engagement, relationship building, and financial management. 

Randy’s vision and expertise in economic and business development, community and corporate relations, diversity and inclusion, and social responsibility has allowed him to be successful as a banker and board member of several non-profit organizations.

Marjorie Williams

Business Consultant

Denver MBDA Business Center

Marjorie Williams is currently, a business consultant at Minority Business Development Agency Colorado Business Center.  Marjorie is a retired Civil Service employee of 32 years   Her expertise and career encompassed the contracting arena.

As an unlimited warranted contracting officer, her duties included oversight, management, and program direction of information management/information technology systems and programs.  She Also served as warranted contracting officer and flight chief responsible for all aspects of contract administration including pre-award and post-award activities of a variety of complex multi-billion dollar contracts and performed full range of pre-award and post-award functions, including analyzing, negotiating, settling and executing contractual agreements.  She developed, implemented and reviewed contracting plans for pre-award, post-award, price/cost analysis and a wide variety of procurement activities.

Marvin Lyman

Program Director

Denver MBDA Business Center CARES Act Assistance Program

Growing up east of Kansas City’s racial dividing line, Marvin Lyman understands many of the issues facing America. Whether they are the nuances of race and class, underemployment and unemployment, courageous entrepreneurship, access to capital, connecting with corporate supply opportunities, or urban and rural development, Marvin identifies, educates, and inspires through his experience.

Having attended Kansas City’s premier public school, Lincoln College Preparatory Academy, he took advantage of this foundation and received his Bachelor’s Degree from St. Cloud State University along with the highly coveted SCSU Excellence in Leadership Award. He was selected as a Congressional Intern through the Washington Center for Internships and was a Governor’s National Leadership Fellow at Ferris State University. Winning many awards along the way, Marvin is most proud of fathering his daughters and godson whom have tremendously blessed his life. As an ordained minister and certified Housing Development Finance Professional, Marvin makes himself readily available to empower disenfranchised groups by making strategic connections and assisting in the development of entrepreneurs

Stella Mirembe

Business Consultant

Denver MBDA Business Center CARES Act Assistance Program

Stella Mirembe is a Business Consultant whose role is to improve enterprises by reviewing business operations and recommending calculated solutions. Her special area of expertise is business development, policy creation, preparation and interpretation of technical and financial proposals, dynamic networking, establishment of connections with strategic partners and resources, business recovery assistance, overseeing new marketing initiatives, sales forecasting and researching new opportunities. In her recent experience as a Business Development Consultant, her duties included but were not limited to strategic plan development, lobbying, development of a retainer strategies, designing and implementing of business growth tools, bid management,  conducting online surveys, organizational portfolio development, national content management, research and establishment of a marketing plan, proposal writing, mentoring, Quality Control, social media management, data collection, entry & analysis and budget control & evaluation. She has gained excellent verbal and written communication skills, great interpersonal skills, complex project management, assessing of social and economic impacts of business activities on the environment, considerable general business knowledge and strong problem-solving skills. As a consultant for the Mountain Plain Minority Supplier Development Council, Stella will utilize her unique skill set to guide MBEs to greater success.

Stella holds a B.Sc. in Business Statistics. 


Tracye Tyler

Administrative Coordinator

Denver MBDA Business Center CARES Act Assistance Program

Tracye Tyler is an independent contractor. Her company, Tyler Insight provides administrative support to the Mountain Plains Minority Supplier Development Council. Tracye is a native Missourian and has worked with The Edge Advisory Group as Vice President of Business Development & Client Relations for the Midwest Region.

Tracye developed a strong sense of devotion for her gifts as the Lincoln Academy Class of 1983 Secretary for nearly 10 years. Tracye is also the secretary for a non-profit organization Urban S.U.C.C.E.S.S. Inc. (Shaping Urban Core Communities to Excel in School & Society) for nearly five years. This experience gave her a deep appreciation for how nonprofits seek to improve the quality of life for the community.


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