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Gary Weiers

Faribault Office

Since 2013

Tel: 612-920-3320 x109

Gary leads the Human Resources Division and heads the executive search and organizational analysis services. Since joining us in 2013, he has provided human resource management services, executive searches, organizational studies and management support. Gary has conducted over 70 executive searches and assisted with dozens of organizational related projects.

Prior to joining DDA Gary worked his way up the county government ladder, rising from social worker to social services director, and culminating with 11 years as  Rice County's Administrator where he managed 16 departments with 350 employees and an annual budget of $50 million. This included organizational oversight of the human resources function for the County.

Tessia Melvin

Wayzata Office

Since 2016

Tel: 612-920-3320 x103

Tessia joined DDA after working city and county government for nearly 13 years. Tessia heads our Classification and Compensation service area.


As City Administrator in Maple Plain, Tessia created a five-year budget, Capital Improvement Plan, Infrastructure Improvement Plan, strategic planning and worked significantly in human resources and communications. While in Dakota County, Melvin provided leadership training, managed their performance management system and worked with compensation and benefits. Prior to government, Tessia worked at Carlson Companies. In this role, she focused on communications and lean thinking. Dedicated to local governments and continued learning, Melvin earned her doctorate in Public Administration at Hamline with an emphasis on city development and planning.

Liza Donabauer

St. Bonifacius Office

Since 2017

Tel: 612-920-3320 x111

Liza is a Management Consultant and specializes in Executive Search services. Like all DDA HR consultants, she has a background in public administration at both the city and county level, most recently in Kansas and Minnesota.  Liza worked in Wright County providing administrative support to the Commissioners, Coordinator, and Human Resources Department. This path lead her into city management for Clearwater, Kansas, and Arlington, Minnesota. Throughout the years, her work has centered on human resource management, strong community participation, and leadership development. Liza received her MBA with an emphasis in public administration from St. Scholastica.

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Mark Casey

New Brighton Office

Since 2020

Tel: 612-920-3320 x113

Mark joined DDA as a Management Consultant specializing in executive searches, strategic planning, and organizational consulting in the Twin Cities metropolitan area.  In his thirty-three years of public service, Mark has served as the City Manager for the City of St. Anthony Village, City Administrator for the City of Annandale, and Director of Community Education for both the Annandale and Maple Lake school districts. He also worked for the Cities of Faribault, Saint Peter, and Columbia Heights.  Mark received his undergraduate degree from the University of Minnesota and a master’s from St. Cloud State University. He has served on numerous boards and commissions including the League of Minnesota Cities, Metro Cities (President), Metro Area Management Association, and the Allina Hospital Board of Directors (Buffalo, MN), and has been a frequent guest lecturer at the University of Minnesota, Hamline University, and Metro State University.

Mark Goldberg

Apple Valley Office

Since 2020

Tel: 612-920-3320 x114

Mark is a Management Consultant of the firm and has held a variety of compensation leadership positions in media, high tech, manufacturing, local government organizations, and the University of Minnesota. In addition, he has over six years of experience consulting with public sector organizations around the country. Mark holds a master's degree in Human Resources and Industrial Relations from Cornell University and a bachelor's degree in Human Resource Administration from Muhlenberg College.  

Pat Melvin

Wayzata Office

Since 2021

Tel: 612-920-3320 x116

Pat joined DDA as a Management Consultant specializing in Executive Search Services. He holds a Government and Management degree from Saint John's University University and a Public Administration and Urban Regional Studies master's degree from the University of Minnesota, Mankato, which he earned while working for the City of Edina. He grew from being the Special Projects Administrator in Wright County to become the Administrator in McLeod County and has city experience serving as City Administrator in the Cities of Arlington and Minnetonka Beach. While working in county and city government, Pat has been involved in policy development, budgeting, and human resources functions including recruitment, payroll, benefits and workplace investigations, capital improvement plans, contract negotiations, grievance settlements, and managed a group self insured health insurance plan. Pat enjoys working with a team of individuals to establish goals, address concerns, and build upon success.

Liz Foster

Since 2015

Tel: 612-920-3320 x108

Since joining DDA in 2015, Liz has been involved in numerous executive searches and other HR related projects. Some of Liz’s duties include community research, creating position profiles, assembling interview materials for our clients, and providing general administrative support to our consultants. Liz is an Assistant Consultant that provides support and assistance throughout our Human Resources Division.

Melanie Ault

Tel: 612-920-3320 x112

Melanie Ault brings over 20 years of experience leading Minnesota county human resources and labor relations operations with additional experience at the city, regional, and state levels. You might recognize her by her passion for examining pending legislation and its ramifications for the public sector. Melanie holds BA, MAPA, and JD degrees, with further education in public administration. She is an avid supporter of professional organizations, serving on the state and national levels. She loves making new connections and looks forward to helping you find answers and ideas. Melanie is one of our AMC Human Resources Technical Assistance Program staff.


Human Resources, Inc.

a David Drown Associates Company

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