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Meet A Few Of Our Experts

We have over 100 QK professionals helping California clients build great communities.
Let us introduce you to just a few of them.


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  • Yohanes Makmur
    Yohanes Makmur
  • Greg Thompson
    Greg Thompson
  • Monique Mello
    Monique Mello
  • Rich Barnes
    Rich Barnes
  • Alexandra Aguilar
    Alexandra Aguilar
Yohanes Makmur

PE, TE, PTOE, Senior Civil / Traffic Engineer

I enjoy talking to Clients, new or existing, to listen to their stories and help them with the challenges they face. As a Civil and Traffic Engineer, I strive to deliver good projects for my client. Everytime.

Greg Thompson

PE, QSD/QSP, CASp, Senior Construction Manager/Certified Access Specialist

No matter how similar project designs can be, each project is unique with its challenges, participants, constraints, and agendas. As a construction professional, I really like to assist our clients fulfill their project vision, to meet their need, to help their community. We’re building America.

Monique Mello

PE, Senior Associate Engineer

Working at QK allows me to partner with our various small communities and turn their vision into a reality.  It’s exciting to see how these projects can transform a community.

Rich Barnes

Senior CADD Technician/Designer

My job starts with taking a client’s vision and turning that into a set of improvement plans that includes survey data, local design standards and adherence to laws and regulations like ADA and SWPPP.  My favorite part of the job is working with a team of professionals and seeing that vision turned into reality.

Alexandra Aguilar

Associate CADD Technician

Working with successful professionals at QK has given me the opportunity to grow in the field of engineering where the skills I learn will allow me to continue helping the communities we serve.


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  • Antonio Westerlund
    Antonio Westerlund
  • Jocelyn Correa
    Jocelyn Correa
  • Steve Brandt
    Steve Brandt
Antonio Westerlund

PLS, CFedS, Senior Associate Land Surveyor

Locating existing property boundaries, defining new property boundaries, locating fixed works and design stakeout are vital platforms to many operations in our free society. It’s a pleasure being a QK team member providing these professional services to the public, doing our part in managing the Central Valley’s geospatial infrastructure.

Jocelyn Correa

LSIT, Associate Surveyor

I love how surveyors get to be involved in every step of a project, from conceptual layouts to final construction.  It is extremely satisfying to begin with an empty site, and help our clients transform it into something better – in both map form, and in the real world.

Steve Brandt

AICP, Principal Planner

Working at QK allows me to utilize my professional expertise to give back to the communities where I live and grew up in and make them better places.

 


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  • Dan Garver
    Dan Garver
  • Jessica Louie
    Jessica Louie
  • Michael Ratajski
    Michael Ratajski
Dan Garver

ASLA, Senior Landscape Architect

Designing parks is the best part of my job. Being in a sandwich generation I look at parks from my parents and granddaughters viewpoint. Layouts that look attractive could be an accessibility issue for those that are aging. And what new piece of play equipment would get my granddaughters giggling? 

Jessica Louie

Associate CADD Technician/Designer

Being a CADD Designer and Drafter and has opened my eyes to the world around me.  I am able to see and appreciate the built environment in a way I wasn’t able to before I began working at QK.  Every project is part of that experience and it only continues to grow.

Michael Ratajski

Senior Planner/Urban Designer

Working with the multi-disciplinary QK team and the clients that are attracted to our talent and expertise, as a planner and urban designer, I enjoy the many opportunities here to create great places and great communities where people can live, work, shop, play, and relax.


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  • Carie Wingert
    Carie Wingert
  • Karissa Denney
    Karissa Denney
  • Curtis Uptain
    Curtis Uptain
Carie Wingert

Senior Environmental Scientist

Every project is unique and interesting. As a Senior Biologist, I’m able to take my years of experience and help our clients navigate an increasingly tricky regulatory landscape.  I’m also thrilled to be able to mentor an eager group of young biologists and watch them grow and help our clients achieve their project goals.

Karissa Denney

Assistant Environmental Scientist

Each QK individual brings a unique and special skill set, which when partnered with others, produces an experienced and talented team.

Curtis Uptain

Principal Biologist

As Principal Biologist for QK, I have a unique opportunity to use my decades of experience to mentor staff and guide a well-functioning highly diverse biological team that works together to help our clients at all levels of project development and permitting.


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  • Jaymie Brauer
    Jaymie Brauer
  • Desmond Johnston
    Desmond Johnston
  • Annalisa Perea
    Annalisa Perea
  • Jerome Keene
    Jerome Keene
  • Conor McKay
    Conor McKay
Jaymie Brauer

Principal Planner

Everything we do here is based on a shared vision of personal and professional excellence. I have been encouraged and challenged to use my diverse life and work experiences to provide creative solutions to difficult situations.  As a project manager, I appreciate having the independence and the responsibility to effectively manage my projects while offering the highest level of customer service.

Desmond Johnston

AICP, Senior Planner

As a natural resource planner, it’s great to be part of this amazing QK team of professionals with diverse skills, all contributing to the shared goal of making this part of California a sustained, attractive, and high-quality place to live and work.

Annalisa Perea

AICP, LEED AP-ND, Senior Associate Planner

Working in the private sector combined with working as a contract planner for public agencies, I’m able to apply an interdisciplinary perspective to all projects, with a strong understanding of sustainability, innovate designs and socio-economic issues of the urban context. Shaping cities through good policy and proper implementation is key to building the kind of communities people take pride in.

Jerome Keene

AICP, Senior Planner

I take pride in not only assisting clients in finding reasonable solutions to their problems; but, learning daily from a diverse team of professionals about all aspects of development and applying that knowledge into our projects.

Conor McKay

Assistant Planner

I enjoy helping clients responsibly develop our natural environment and navigate California environmental regulations. I am excited to be a part of such a diverse and talented team here at QK that works to enhance the quality of life for all Central Valley residents.


qkfooter_logoLeadership

  • Ronald J. Wathen
    Ronald J. Wathen
  • Janel Freeman
    Janel Freeman
  • Michael D. Knopf
    Michael D. Knopf
  • Amber Adams
    Amber Adams
  • Jeffery S. Cowart
    Jeffery S. Cowart
  • Garth A. Pecchenino
    Garth A. Pecchenino
  • Spencer A. Supinger
    Spencer A. Supinger
  • Christopher B. Mynk
    Christopher B. Mynk
  • Cathy Williams
    Cathy Williams
Ronald J. Wathen

PE | President / Principal Engineer / Visalia Branch Manager

Mr. Wathen brings 25 years of professional engineering experience with a diverse background of project management, design and construction-related activities. As President, Mr. Wathen is focused on the companywide organizational delivery of our professional services and meeting our clients’ business objectives with every engagement. In addition, he supports and ensures resources are available for our many talented professionals working to make a positive client experience and outcome.

I really enjoy helping our clients be successful in their business endeavors. I am fortunate to work with some amazingly talented and committed professionals. I am proud to see our QK Team consistently go the extra mile to meet our clients’ needs.

Janel Freeman

Chief Financial Officer

Ms. Freeman has been with QK since 1980. As Chief Financial Officer, she is responsible for the firm’s administrative, financial, risk management, human resources, IT and business operations. This includes the development of financial and operational strategies, metrics tied to those strategies, and the ongoing development and monitoring of control systems designed to preserve company assets and report accurate financial results.

I’m fortunate to have spent my entire career with QK and have been afforded amazing opportunities to grow along with the firm.

Michael D. Knopf

PE, PLS | Chairman of the Board, Principal Engineer/Surveyor

Mr. Knopf has over 40 years of professional experience, including 12 years as QK’s President and CEO, where he oversaw the firm’s overall operations, business development and client relations.  In 2018, Mr. Knopf stepped down from this position and has returned to a technical and supervisory role including leadership of the firm’s Land Surveying practice.   Mr. Knopf will remain Chairman of the QK Board of Directors.  

Originally licensed as a Land Surveyor in 1977, he currently holds professional registration as both a Land Surveyor and Civil Engineer in California, Nevada, and Arizona. Throughout his career, Mr. Knopf has been actively involved with many of the firm’s larger and more complex surveying, design, and construction projects.  Serving as Principal-in-Charge and/or Project Manager, he has been responsible for the entire project delivery process including overall project quality, technical content, adherence to schedules and contract requirements, and conformance with project budgets.

We are here to help make a difference… for our own people, for our clients, and for our communities.

Amber Adams

Vice President of Business and Operations / Clovis Branch Manager

Ms. Adams is an experienced management professional who specializes in client coordination, business operations, finance and project delivery for multi-disciplined and complex projects. She serves as the Vice President of Operations and Business for QK’s offices and has over 20 years of professional experience overall. Ms. Adams excels at working with Clients to clearly define objectives and prepare scope and contracts to help agencies, firms, and individuals within the public works and planning community to ensure the successful implementation for their projects and programs.

As Branch Manager, Ms. Adams provides oversight of all projects managed, and services provided through, the Clovis office. This includes the substantial amount of public works and land development projects being managed by Clovis project managers and technical professionals.

Working with my clients and colleagues to accomplish shared objectives drives me.  Seeing community projects come to life is why I am a QKer!

Jeffery S. Cowart

PE | Principal Civil Engineer / Porterville Branch Manager / Vice President of Quality Assurance and Municipal Services

Mr. Cowart has 30 years of civil engineering and project management experience. He currently serves as Principal Engineer, and Vice President of Quality Assurance and Municipal Services, providing design and construction administration services for large-scale infrastructure improvement projects for a number of public agencies. Mr. Cowart’s responsibilities have included providing project management services for surveying, planning, design, contract administration, and construction observation for public works projects and development projects.

Mr. Cowart leads Municipal Services to our city clients for which we contract for City Engineering Services, such as the Cities of Farmersville, Exeter, Lemoore, Lindsay, Corcoran, and Delano. Additionally, he serves as City Engineer for the City of Lindsay.

As Branch Manager, Mr. Cowart provides oversight of all projects managed, and services provided through, the Porterville office.  This includes the public works and land development projects being completed by Porterville technical professionals.

Having been born and raised in the San Joaquin Valley, QK provides me the opportunity to work with and help our local communities develop the infrastructure and amenities to support their residents. I’m able to be part of a team of dedicated, knowledgeable and innovative people at QK that help each of our clients meet their goals and objectives.

Garth A. Pecchenino

PE, PLS, QSD | Principal Engineer / Vice President of Technical Services

Mr. Pecchenino has over 29 years of experience in civil engineering and surveying projects with an emphasis in water resources, hydraulic analysis and surveying boundary research. He currently serves as Principal Engineer, Surveyor and Vice President of Technical Services, His project experience for civil related projects includes permitting/ application process, specification writing and design of new irrigation facilities, water wells, water pumping systems, wastewater treatment facilities, and storm drainage facilities. Mr. Pecchenino surveying project experience includes both office and field work that encompasses the areas of boundary, legal descriptions, construction staking and topographical surveys.

Mr. Pecchenino has served as an expert witness on various disputes related to water resources and drainage issues.

Mr. Pecchenino currently serves as District Engineer for Hilmar County Water District, Le Grand Community Service District, Midway Community Service District, South Dos Palos Community Service District, and Merquin County Water District; and City Engineer for Atwater and Dos Palos.

In the role of Vice President of Technical Services, Mr. Pecchenino has advanced the professionalism of the QK staff, structured the technical procedures and established clear internal guidelines for the completion of both technical reports and construction documents.

Being a QKer is living my roots, raised in the Sierra Foothills along Highway 49 makes me a 49er and as a 49er you learn to understand what personal satisfaction there is in hard work that develops positive results for your community.  The spirit of stepping into a new project is liking prospecting for minerals in the foothills, every work day I get the opportunity to either improve the well being of our clients or staff through my interaction on projects and that is the true treasure in life.

Spencer A. Supinger

PE, ENV SP | Senior Associate Engineer / Merced Branch Manager

Mr. Supinger serves as Branch Manager providing oversight of all projects managed and services provided through the Merced office.  He is a registered civil engineer and project manager with over 12 years of experience. Mr. Supinger is an Envision Sustainability Professional (ENV SP) and one of only twelve Institute of Sustainable Infrastructure (ISI) approved trainers in California for the Envision rating system. His experience includes designing water, sewer, and storm drain improvements, including distribution mains, booster pumps, wells, storage tanks, and lift stations.

Mr. Supinger currently acts as District Engineer for the Hilmar County Water District and the Planada Community Services District.

I enjoy helping clients realize their vision and needs through engineering solutions. QK specializes in a wide range of projects that continue to challenge me to learn.  My favorite part of civil engineering is visiting the project site during construction to see my design come to fruition.

Christopher B. Mynk

AICP | Principal Planner/Bakersfield Branch Manager

Mr. Mynk serves as Branch Manager providing oversight of all projects managed and services provided through the Bakersfield office.  He is a certified Planner through the American Institute of Certified Planners (AICP) with over 14 years of experience in land use planning, CEQA and NEPA compliance, agency coordination, as well as project entitlements for public agencies and private interests.  His areas of expertise include the California Central Valley, Mojave Desert, Oil and Gas permit processing, commercial scale renewable energy (wind and solar), residential, commercial and industrial development. Prior to joining QK, Mr.  Mynk was a senior level planning manager with the Kern County Planning and Natural Resources Department (County Planning) for over 12 years.  

Mr. Mynk is a member of the American Planning Association (APA) and currently serves as the Interim Community Development Director in Delano, CA.

Often times development projects take years to go from an idea to an approval. Seeing a vacant lot being graded or a building under construction, and knowing that you have been part of a team of technical experts responsible for its success, is always a great feeling. We are here to assist our clients in navigating the regulatory process.

Cathy Williams

PE, QSD/QSP, ENV SP | Senior Project Manager/Assistant Branch Manager – Bakersfield

Ms. Williams serves as Assistant Branch Manager providing oversight of projects managed and services provided through the Bakersfield office.  She is a registered Civil Engineer with over 21 years of land development experience with a vast array of large and small scale residential, commercial, and retail developers.  She also has an in-depth knowledge of designing public and private civil engineering projects in the areas of grading, traffic improvements, water quality, drainage and sewer design.  Ms. Williams is a CASQA-certified Qualified SWPPP Developer (QSD) and Qualified SWPPP Practitioner (QSP), as well as a Envision Sustainability Professional (ENV SP).   She currently serves as District Engineer for Greenfield Water District.

Ms. Williams is a member of the American Council of Engineering Companies (ACEC) and the American Society of Civil Engineers (ASCE).

Partnering with clients to accomplish project goals is an exciting aspect of working at QK.  I am thankful to be a part of this talented team of professionals working together to make our communities better.