About Us

Our Mission

Experience You Can Trust Your Business With

We guarantee effective and knowledgeable input and management for you and your business. Our reputation and history of success with our clients and their business needs speaks for itself. There's no substitution for honest knowledgeable counsel.


02. Dedicated and Loyal

On the complex, important, and often ground-breaking business development matters on which we work. we can provide consultants nationally and from around the world. And we've been lucky enough to hire and collaborate with solid proven people in the business. Who people "are" is the most important quality to us.


03. We Treat You and Your Business with Respect

Whether your business is looking to get started or it's in need of some management, design or operation direction, you can rest assured that we’re going to help you. We’re committed to providing you with top notch support and knowledge. We approach every client with a focus on integrity and understanding. 

About us

Comprehensive Business, Design, Operational and Development support you and your company can trust.


Our team has a reputation of excellence in providing smart, sensible, and cost-effective design and business solutions for our clients.


Often, more than one area of expertise is required with business development. With our firm, there’s no need to hire a multitude of consultants. We can advise and advocate for you in many areas of your business practice and development.

We serve a wide range of clientele, and every client relationship is valued greatly and treated with respect. Each engagement benefits from the depth and breadth of our experience.

helping your company find its way.

Steve McAllister

Steve is President of MDSI. He is experienced in design, program management and project management on projects around the world.

Denis O'Malley

Denis is a licensed Architect with development and design expertise around the globe. Chicago, Kazakhistan, England, Saudi Arabia, and Ireland, to name a few.  

Cesar Chavez

Cesar is a seasoned professional with design and project management experience in Chicago High Rises to industrial developments in South America.

Newton  de Oliveira

Newton is a certified project manager, engineer with experience in commercial development in South America.

Carmen Vidal-Hallett

Carmen is an international designer, educator, planner,and sustainable design specialist with experience nationally and internationally.