About GMP

Meet the team behind GMP Consultants.

GMP Consultants is a nationwide public sector consulting firm dedicated to serving local government agencies through executive search, interim management placement, and organizational consulting.

People first

Clients work with consultants who bring real public-sector leadership experience from cities, counties, and special purpose districts.

Who We Are

Leaders in local government consulting.

GMP Consultants, founded by industry leader Greg M. Prothman, is a premier public sector consulting firm dedicated to serving local government agencies.

Our strength lies in our people. GMP's trusted consultants bring extensive, executive-level leadership experience from cities, counties, special purpose districts, and other public agencies.

We work collaboratively with governing bodies and stakeholders to build high-performing leadership teams and achieve effective organizational outcomes for every community we serve.

How We Work

Every search is a shared effort.

We do not just fill roles. We bring perspective, challenge thinking, and help clients make confident decisions. Our consultants stay active in ICMA and state associations, staying close to the work and the people shaping local government.

01

Service & Relationship

We build lasting relationships with both clients and candidates, because trust matters when the decision is this important.

02

Customized Solutions

We take time to understand the organization, community, leadership need, and decision-making environment.

03

Team Approach

Our consultants work collaboratively, combining networks, local government judgment, and specialized expertise.

The people you'll work with.

Meet our team

Our team includes former city managers, administrators, elected officials, public works leaders, finance professionals, law enforcement and fire leaders, project managers, and senior public-sector executives.

GMP Consultants team together
GMP Consultants works as one team, drawing on decades of relationships across local government and public sector leadership.
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Greg Prothman headshot

President

Greg Prothman

greg@gmphr.com Greg has spent more than two decades in government and over 25 years in public sector executive search. His public service career includes roles as a police officer, Assistant City Manager, and City Manager.
Brenda Gabbitas headshot

Project Manager

Brenda Gabbitas

bgabbitas@gmphr.com Brenda’s background spans public and private sector project work, with more than a decade of experience supporting communities, stakeholders, and clients across the country. She specializes in strategic communication, project organization, and client service.
Bob Larson headshot

Senior Consultant

Bob Larson

Bob@gmphr.com Bob is a respected municipal leader with senior local government experience dating back to 1987. His career includes city management leadership in Washington and Minnesota, with expertise in finance, capital programs, economic development, and organizational development.
Bryan Cosgrove headshot

Senior Consultant

Bryan Cosgrove

bcosgrove@gmphr.com Bryan’s municipal management career spans more than 30 years in Oregon, including service as Assistant City Manager of Oregon City and City Manager of Silverton and Wilsonville. He has deep experience with fast-growing communities, infrastructure planning, financing, and council-manager relations.
Dan Gifford headshot

Consultant

Dan Gifford

dgifford@gmphr.com Dan is a retired City Manager with 27 years of municipal government experience in Iowa communities. His career includes service as Planning Administrator and City Manager, supported by advanced credentials in public administration and urban planning.
Don Lombardi headshot

Senior Consultant - Fire

Don Lombardi

dlombardi@gmphr.com Chief Lombardi’s fire service career spans 34 years, including 14 years as Fire Chief for West Metro Fire Rescue in Colorado. He led a large multi-station organization and brings national fire leadership experience to GMP clients.
Dave Zabell headshot

Senior Consultant

Dave Zabell

dzabell@gmphr.com Dave has held senior leadership roles across Washington local government, including City Manager of Pasco and Fife, City Administrator of Marysville, and Assistant City Manager of Yakima. He also brings public works expertise from leadership roles in Marysville and Bothell.
Debbie Tarry headshot

Senior Consultant

Debbie Tarry

DTarry@gmphr.com Debbie is a highly regarded local government executive with more than 38 years of experience, including ten years as City Manager of Shoreline, Washington. Her career also includes senior finance and administrative leadership roles with LINK Transit, Mill Creek, and Shoreline.
Greg Young headshot

Senior Consultant

Greg Young

gyoung@gmphr.com Greg’s municipal management and public finance experience spans 34 years, including 20 years as a Town and City Administrator in Washington State. He has served the communities of Burlington, Ferndale, and La Conner.
Gary Palmer headshot

Senior Consultant

Gary Palmer

gpalmer@gmphr.com Gary has more than 33 years of public service experience, with city administration and community development leadership in Texas, Georgia, Tennessee, and Michigan. His roles include City Administrator, Assistant Town Manager, and Community Development Director.
Gordie Olson headshot

Senior Consultant - Fire

Gordie Olson

golson@gmphr.com Chief Olson’s fire service career spans more than 40 years, including service as Fire Chief for the City of Thornton Fire Department in Colorado. He brings extensive experience in labor relations, EMS systems, accreditation, succession planning, and strategic planning.
Jennifer Monsivais headshot

Project Manager

Jennifer Monsivais

jmonsivais@gmphr.com Jen is a customer service-oriented project professional with ten years of experience supporting a university athletic program. She brings a people-first approach to client support, stakeholder coordination, and collaborative project work.
Jeff Weldon headshot

Senior Consultant

Jeff Weldon

Jweldon@gmphr.com Jeff’s municipal management career spans 29 years in Minnesota and South Dakota, including City Manager and City Administrator roles. He has also supported professional development for local government managers through state association senior advisor work.
Kate Hansen headshot

Operations Manager

Kate Hansen

Kate@gmphr.com Kate combines 20 years of project management and administration experience across private business, nonprofit, and government settings. Her local government background includes service as a fire district administrator, campaign manager, and elected official.
Linda Woulfe headshot

Senior Consultant

Linda Woulfe

lwoulfe@gmphr.com Linda has more than 26 years of municipal service in Minnesota, including 19 years as City Administrator in Pine City and Cambridge. She has also served as an Interim City Administrator for multiple communities navigating leadership transitions.
Mick Monken headshot

Senior Consultant

Mick Monken

mmonken@gmphr.com Mick is an experienced public works and engineering leader with 33 years in local government engineering services. His career includes service as Public Works Director, City Engineer, Interim Public Works Director, and Senior Civil Engineer.
Mark Bethune headshot

Senior Consultant

Mark Bethune

Mark@gmphr.com Mark has 25 years of executive management experience across the public and private sectors, including 16 years as City Administrator for Orting, Washington. His background includes city leadership, budgeting, labor relations, hazard mitigation, and behavioral health executive management.
Michael Mirra headshot

Senior Consultant

Michael Mirra

mmirra@gmphr.com Michael’s career spans more than 43 years in public and private sector service, including legal advocacy and housing leadership. He served as General Counsel and later Executive Director of the Tacoma Housing Authority.
Tim Troxel headshot

Senior Consultant - Law Enforcement

Tim Troxel

tim@gmphr.com Tim is a seasoned law enforcement professional with 33 years of experience, including 12 years in senior leadership. He most recently served as Deputy Police Chief for Renton, Washington.
Elke Doom headshot

Senior Consultant

Elke Doom

edoom@gmphr.com Elke is a seasoned municipal executive with more than 30 years of public sector leadership, including City Manager and Interim City Manager roles in Michigan communities. She brings deep experience in municipal finance, labor relations, elections, redevelopment, and organizational transitions.
Jana Prothman Lissiak headshot

Project Manager

Jana Prothman Lissiak

jana@gmphr.com Jana is an experienced project manager with more than 15 years of leadership in human services and public-sector organizations. Her background includes complex project coordination, fiscal and contract management, regulated environments, and mission-driven work.
Malcolm Fleming headshot

Senior Consultant

Malcolm Fleming

mfleming@gmphr.com Malcolm has served in executive local government roles since 1990, including Town Manager, City Manager, Chief Administrative Officer, County Administrator, and Deputy County Manager. His work spans organizational development, economic development, affordable housing, capital projects, and fiscal stewardship.
Dave Hutcheson headshot

Senior Consultant - Fire

Dave Hutcheson

dhutcheson@gmphr.com Chief Hutcheson brings more than 35 years of public service and fire leadership experience, including service as Fire Chief of the Virginia Beach Fire Department. He also serves on the Virginia Beach City Council and has national urban search and rescue deployment experience.

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