Our Staff

Meet our Leadership and Support Team

DMA’s many successes as a consultant, developer, owner and manager are attributable to a highly talented and diverse staff.  With a combined 80 years of experience in the development and operation of affordable multifamily housing, DMA’s officers and staff provide a knowledge and experience base that benefits both the clients we serve, as well as the residents of the facilities we own and manage.

Diana McIver, President
Founded DMA Companies in 1980

Diana McIver is the President and Chief Executive Officer of the DMA Companies.  She has more than 30 years of experience in the area of affordable housing and has assisted DMA clients in the production of 15,000 units of affordable housing through various state, local and federal programs, as well as serving as a developer and owner of affordable housing properties.  She is active in numerous associations and industry trade groups and is past President of the Texas Affiliation of Affordable Housing Providers (TAAHP), a state-wide industry trade association, and in 2010 was elected to the Board of the Texas Association of Local Housing Finance Agencies (TALHFA). In 2001, Diana received a federal appointment to the Commission on Affordable Housing and Health Care Needs for Seniors in the 21st Century, and her early career involved work with the U.S. Senate Special Committee on Aging and the National Center for Housing Management. She received a BA from the College of Idaho, Caldwell, Idaho.

JoEllen Smith, Executive Vice President
Joined DMA team in 1998

JoEllen Smith has more than fourteen years of experience in senior and special needs housing. She joined DMA in March 1998 as a Development Assistant, and her career path included serving as a Development Manager and Program Director for DMA’s Section 202 and 811 nonprofit clients.  JoEllen was promoted to Vice President in July 2002, Senior Vice President in November 2005, and Executive Vice President in 2008. In this role she is responsible for client relations, business development activities, oversight of all DMA’s 202/811 consulting services, housing tax credit consulting, and providing leadership for DMA’s staff. JoEllen is a member of both the Texas Affiliation of Affordable Housing Providers (TAAHP) and the Texas Association of Local Housing Finance Agencies (TALHFA). She received a Bachelor of Arts in Political Science from California State University, Long Beach, California, in May 1997 and a Certificate in Gerontology in 1996.

Janine Sisak, Senior Vice President/ General Counsel
Joined DMA team in 2001

Janine Sisak joined DMA in December 2001 as a Development Manager and was promoted to Vice President in November 2005 and Senior Vice President in 2009.  She has more than ten years of experience in affordable housing in addition to fourteen years of legal practice.  She serves as a Development Manager for projects developed by DMA Development Company using the Housing Tax Credit Program, as well as those developed by nonprofit clients using the Housing Tax Credit program or HUD Section 202 or 811 financing.  This involves working with development team members, cities, lenders, and investors; identifying sites; preparing financial proformas; submitting loan and grant applications: and managing the construction process. Additionally, Janine serves as DMA’s General Counsel and works closely with DMA Properties in asset management.  She received her Bachelor of Arts in Economics from Tufts University, Medford, Massachusetts, where she graduated cum laude in May 1993.  In May 1998, she received her Juris Doctorate from Fordham University School of Law, New York, New York.  Ms. Sisak is a member of the State Bar of Texas.

Sergio Amaya, HCCP, SHCM, Executive Vice President
Joined DMA team in 2005

Sergio Amaya has more than thirty years of experience in property and asset management and was promoted to Executive Vice President of DMA Properties, LLC in February 2005.  In this role, Sergio oversees tax credit properties managed by DMA Properties, LLC, and develops policies and procedures for the firm’s management activities. This includes activities related to budgeting, operations, personnel, maintenance, compliance, and investor relations.  His property management career started as part-time employment while a student at the University of Texas and evolved from onsite management responsibilities to the oversight of a national portfolio of multifamily and commercial properties.  Immediately, prior to joining DMA Properties, Sergio served in key positions in several property management firms and most recently was the Managing Director for Kennedy Wilson, Austin.

Karen Sparks, Vice President
Joined DMA team in 2007

Karen Sparks joined DMA as the company controller in July 2007 and was promoted to Vice President in June 2012. Karen previously worked for Wyndham Hotel Company for ten years and Trammell Crow Company for fifteen years. Karen has an extensive background in corporate accounting, payroll, accounts payable and receivable and partnership accounting. Karen is a Certified Public Accountant and graduated cum laude from the University of Texas at Dallas with a degree in Business and Public Administration with a concentration in accounting.

Nasrin Jozani, HCCP, Staff Accountant
Joined DMA team in 2007

Nasrin Jozani joined DMA in August 2007. She comes to us with years of accounting experience from working with CPA firms and in the Entertainment Industry.  Nasrin received her Bachelor of Science in Business Management from Woodbury University in Burbank, California. She provides accounting duties for DMA Properties and supports the Controller in DMA financial operations.

Lisa ZaiontzDirector of Marketing and Communications
Joined DMA team in 2011

Lisa Zaiontz joined DMA in May 2011.  In her role as Marketing Director, she oversees marketing, communication and leasing strategies for DMA Properties.  This includes onsite training, branding, digital and print design, advertising campaigns, lease-up and retention solutions, corporate culture development, market analysis, financial reporting, social media awareness and public engagement.  She has over 10 years of experience in the multifamily industry.

Elizabeth Good, Operations Support Specialist
Joined DMA team in 2012

Elizabeth joined DMA in 2012 as a Leasing Professional with more than 12 years of customer service and sales experience. In 2014 she began work at the corporate office as a Operations Support Specialist. In this role, Elizabeth assists in developing policies and procedures for the firm’s management activities along with supporting all property management staff. Prior to joining DMA, Elizabeth spent seven years at Avis Budget Group coordinating special services for business members.

Valentin DeLeon, Development Coordinator
Joined DMA team in 2013

Valentin joined DMA in September 2013 as a Development Coordinator for affordable housing. As the Development Coordinator, Valentin provides support to each of the project managers during all phases of the development process. Valentin received a Masters of Public Administration from Texas State University in 2011, and a BA in Political Science from Texas State University in 2007. Valentin has five years of experience with the Texas Department of Housing and Community Affairs (TDHCA), where he was a Multifamily Housing Specialist in the Multifamily Finance Division.

Christine McAdams, Staff Accounting Support
Joined DMA team in 2013

Christine joined DMA in July 2013 and supports the day to day operations in the Accounting Department. Christine graduated from the University of Texas in 2005 with a BS in Applied Learning and Development. She worked previously as a research assistant.

Crystal Switzer, Accounting Manager
Joined DMA team in 2015

Crystal joined DMA in March 2015 after relocating from Dallas. In her role as Accounting Manager, and under the supervision of the Controller, she oversees and directs the efforts of the accounting staff. Prior to joining DMA, Crystal was the Accounting Manager for a privately held residential construction and land development company in Dallas. She holds her Master of Science in Accounting and Information Management from the University of Texas at Dallas and her Bachelor of Arts in Economics from the University of Texas at Austin. She is a CPA candidate and working towards her license.

Kaye Agee, Human Resources/Office Manager
Joined DMA team in 2015

Kaye joined DMA in April 2015 to serve as the Human Resources/Office Manager. In her role, Kaye interacts with the DMA and DMA Properties employees in various aspects, as well as over-sees the daily office operational needs for the various DMA companies. Kaye has over twenty years of staffing and human resources experience working for three of the largest staffing corporations nationwide and served as HR manager most recently at KGI Wireless, Inc., Austin, TX. Kaye attended Henderson State University, Arkadelphia, Arkansas.

  • The DMA Companies

    Since 1980, DMA Companies has assisted with the development or rehabilitation of more than 13,000 affordable housing units in 43 states.


  • Email us at info [at] mciver.com or give us a call on our main line at 512-328-3232

    Extension 4522: DMA Development Company, LLC
    Extension 4518: DMA Properties, LLC
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