Meet Us

Established in 1989, David H. Melvin, Inc., (DHM, Melvin Engineering), is a full service civil and structural engineering firm, providing a broad spectrum of design and consulting services to clients in Northwest Florida. DHM is comprised of professional civil and structural engineers, landscape architects, planners, utility and transportation designers, grants administrators, contract managers, construction engineering inspectors, and technicians who possess the abilities to meet project challenges.

Community minded, client focused, and character driven.

Our firm applies 30 years of experience and knowledge to help clients realize their objectives beginning with innovative concepts through final construction inspection and project close-out; from simple design to complex permitting; from sensitive environmental considerations to regulatory compliance. The DHM advantage – Our history, technical expertise, and trusted relationships.

Our Purpose: Creatively solving the infrastructure needs of our clients, encouraging the families we touch, and fulfilling our God-given role as stewards of the resources entrusted to us.

Executive Leadership

Under the leadership of Founder and President, David H. Melvin, the firm’s success is directly attributable to the company’s culture and the guidance of its Executive Leadership. Each professional in leadership brings a unique perspective along with technical and management expertise to the diversity required for success. At Melvin Engineering, we continue to experience growth and success that impacts the lives of employees, clients, and our communities.

David H. Melvin, P.E.

Principal, President

In December of 1989, David established David H. Melvin, Inc., a full-service consulting engineering firm. With his vision, strategic planning and proven leadership, the multi-disciplined firm has grown from its infancy into the established and flourishing engineering company that is now recognized throughout Northwest Florida.

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David pursued his Master of Business Administration from Florida State University, and received his Bachelor of Science in Civil Engineering with High Honors, from the University of Florida. In December of 1989, he established David H. Melvin, Inc., a full-service consulting engineering firm. With his vision, strategic planning and proven leadership, the multi-disciplined firm has grown from its infancy into the established and flourishing engineering company that is now recognized throughout Northwest Florida. In addition to David’s proven experience in civil and site design, full project management and quality assurance, David’s focus on character is the fabric of the company culture. His varied skill set, and in-depth knowledge are drivers for continued success. With a heart for improving the lives of others, and his collaborative spirit, David is adept at gathering all the necessary people and components together to achieve positive results.

Leon E. (Gene) Nobles, III, P.E.

Vice President | Transportation

With over 27 years of service, Gene has applied his engineering expertise to a wide variety of projects and is recognized by clients for his problem-solving approach to challenging issues.

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Gene joined the firm in 1992. With over 27 years of service, Gene has applied his engineering expertise to a wide variety of projects and is recognized by clients for his problem-solving approach to challenging issues. As the Transportation Division Manager, Gene has demonstrated leadership and success in design, plans production, contracts, and project management. He is uniquely qualified as the resident expert for all transportation-related projects. He holds a Bachelor of Science degree in Environmental Engineering with honors from the University of Florida, an Associate of Arts degree Cum Laude from Chipola College and is a licensed Professional Engineer in the state of Florida. Gene works closely with the Florida Department of Transportation, in addition to several local government entities throughout the Northwest Florida region.

K. R. (Rick) Pettis, AICP, MPA, Planning Director

Planning Director

Rick joined the firm in 2006 after a distinguished military career with the US Armed Forces, and more than 13 years of experience in the public sector. His knowledge of land development processes, and procedures, coupled with his collaborative work ethic, serves as a significant asset to our clients.

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Rick joined the firm in 2006 after a distinguished military career with the US Armed Forces, and more than 13 years of experience in the public sector. His knowledge of land development processes, and procedures, coupled with his collaborative work ethic, serves as a significant asset to our clients. Rick has established our Land Development Division which continues to grow and expand its services and capabilities, to better serve our clients’ needs. Rick earned his Bachelor of Science degree in Social Science and his Master of Public Administration degree from Troy State University. Rick also holds certification as a Certified Planner from the American Institute of Certified Planners.

Kimberly M. Holloway, P.E.

Vice President | Structural

Kim is a strong and trusted leader with creative solutions, excellent project management standards, and meticulous attention to details for every project.

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Kim joined David H. Melvin, Inc. in 2000 while attending Florida State University to earn her Bachelor of Science degree in Civil Engineering, which she accomplished in 2003. Kim is a strong and trusted leader with creative solutions, excellent project management standards, and meticulous attention to details for every project. Kim brings out each team members’ unique talents and a collaborative spirit on every project, large or small. Her duties also include supervisory responsibility for professional engineers, engineer interns, CAD/BIM technicians and administrative staff. Kim recently served as the 2018 Florida Structural Engineers Association Big Bend Chapter President.

Jake Mathis, C.G.C.

Division Manager | CEI

Jake is a senior level Project Engineer for design and inspection of roadway and utility projects and commercial site development.

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Jake Mathis received his Bachelor of Science degree in Civil Engineering from Florida State University in 2005, and in the same year, he joined DHM. Jake is a senior level Project Engineer for design and inspection of roadway and utility projects and commercial site development. His experience includes transportation and utility project management for cities and counties located throughout Northwest Florida and the Florida Department of Transportation. He approaches project management for design and inspection challenges creatively and with innovative thinking while ensuring compliance to standards and specifications. Jake is uniquely qualified for his leadership role in our Construction Engineering Inspection (CEI) Division.

Rachel E. Durden

Chief Financial Officer | Administration

Using sophisticated financial software including Florida Department of Transportation system interface, Rachel is responsible for bookkeeping, accounts receivables and payables, invoicing, employee benefits administration, financial audit coordination, and payroll.

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Rachel joined the firm in 1992 and is currently responsible for the management of all financial activities. Using sophisticated financial software including Florida Department of Transportation system interface, she is responsible for bookkeeping, accounts receivables and payables, invoicing, employee benefits administration, financial audit coordination, and payroll. She also establishes and maintains all financial records with respect to federal, state, and local grant funds compliance. Rachel earned her Associates of Science degree from Chipola College.

Rod Adams, P.E.

Senior Project Engineer | Transportation

Rod is responsible for roadway design projects – from concept to completion. He is a talented and thorough engineer, who analyzes cautiously, and solves design challenges.

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Rod joined Melvin Engineering in 2000 in the Transportation Division, after obtaining his Bachelor of Science degree in Civil Engineering, with Honors, from the University of Florida. Rod is responsible for roadway design projects – from concept to completion. He is a talented and thorough engineer, who analyzes cautiously, and solves design challenges. Rod consistently provides excellent engineering support and is responsible for permitting, analysis, drainage, and stormwater design. He is the Project Manager for all FDOT SCOP, SCRAP, and LAP projects providing design, cost estimates, and plans and specifications.

DHM TEAM

Brian Bearwood, RLA, AICP

Landscape Architect, Planner, Senior Biologist

Brian joined Melvin Engineering in 2005, utilizing his expertise in landscape architecture, site planning, and impact assessment of project design and alternative designs pertaining to social and environmental factors.

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Brian Bearwood earned his Bachelor of Science degree from Oregon State University. He is a Registered Landscape Architect and Registered Professional Planner. Brian joined Melvin Engineering in 2005, utilizing his expertise in landscape architecture, site planning, and impact assessment of project design and alternative designs pertaining to social and environmental factors. He has extensive experience in site development, permitting, design evaluation, and planning. Brian possesses extensive knowledge and experience working with federal and state environmental agencies. His technical expertise in landscape and irrigation design, drainage, biological assessments, impact analysis, geo-technical testing, land use and planning qualifies Brian as a talented professional with proven experience in all phases of planning, utility, and transportation projects.

Alfred C. Harrison, Jr.,

Senior Construction Inspector, Environmental Scientist | CEI

Alfred is responsible for conducting field inspections of construction projects. His expertise is in environmental issues, including wetlands delineation, and endangered species.

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Alfred is responsible for conducting field inspections of construction projects. His expertise is in environmental issues, including wetlands delineation, and endangered species. With a degree in Agriculture and a major in Horticulture from the University of Georgia, Alfred’s scientific background uniquely qualifies him for environmental survey, inspection, and analysis which he has performed for Melvin Engineering since joining the firm in 2006. Alfred holds FDOT CTQP certifications, and numerous recent projects include inspection and contract management on roadway and utility projects located throughout the region.

Margaret A. Baudoin

Planner | Grants Administration

Margaret is the FDOT LAP, SCOP, and SCRAP coordinator and is a liaison with multiple agencies, staff, and clients on issues of recordkeeping and successful project and contract compliance.

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Margaret joined Melvin Engineering in 2006 after working with the Jackson County Board of County Commissioners as Assistant Director of Community Development. Margaret is the FDOT LAP, SCOP, and SCRAP coordinator and is a liaison with multiple agencies, staff, and clients on issues of recordkeeping and successful project and contract compliance. Her expertise includes grant writing and administration and project management. She is well-versed in all grant funding programs, including DEO-CDBG, NWFWMD, FDOT, USDA-RD, RIF and many others. Margaret’s meticulous work in examining reports, pay requests, providing research, GIS mapping, and all other support she provides, is a tremendous benefit to our team and the clients we serve. Margaret is also a member of the American Planning Association.

Evan M. McAllister

CSS/Resident Compliance Specialist, Grants Funding and IT Administration | Grants/Transportation

Evan McAllister joined the firm in 1998 and is responsible for multiple regulatory agency coordination relating to grant application, administration, and contract compliance.

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Evan McAllister joined the firm in 1998 and is responsible for multiple regulatory agency coordination relating to grant application, administration, and contract compliance. He works closely with local government entities, funding sources, and federal, state, and local regulatory agencies to ensure completion of successful transportation projects. He is the firm’s representative on issues relating to construction management and is the interface with construction field and administrative personnel. His area of expertise includes serving as the Resident Compliance Specialist and CSS on FDOT, LAP, SCOP, and SCRAP projects, as well as the Administrative Coordinator/Environmental Review Specialist on State and Federally funded projects. Evan is known throughout the state of Florida for his expertise in successful grant funding and administration.

Marti Vickery

Office Manager, Special Projects | Administration

Marti joined the firm in 2010. Her key responsibilities are office management, client and staff support services, and marketing initiatives.

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Marti joined the firm in 2010. Her key responsibilities are office management, client and staff support services, and marketing initiatives. She assists with special projects, marketing, and civic activities, while applying her extensive skills in business management, program management, and economic development. Marti plans and coordinates scheduled staff meetings, and community events, and supports company mission efforts, and other targeted opportunities. Her formal education includes attending the Community College of the Finger Lakes and completion of Economic Development courses provided by the University of South Florida Small Business Development Center.

Mary-Margaret Farris, E.I., LEED GREEN ASSOCIATE

Project Engineer | Land Development

Mary-Margaret is experienced working with numerous City and County land development ordinances, and regulations regarding development, utility services, and other agency guidelines for development.

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Mary-Margaret Farris, E.I., a senior level engineer, joined DHM in 1997. She earned her Associate of Arts degree with Honors from Chipola College in 1997, her Bachelor of Science in Civil Engineering in 2000. Her work experience includes transportation design projects and site design for commercial and retail clients. She is an expert in site grading, permitting, and stormwater design. Mary-Margaret is experienced working with numerous City and County land development ordinances, and regulations regarding development, utility services, and other agency guidelines for development. She is responsible for the design of stormwater management and conveyance systems using AutoCAD, StormCAD, WaterCAD, ICPR, and other software in the preparation and calculation of systems. Additional responsibilities include full project management from concept to final design, construction engineering inspection, and project close out.

Sandra Toole

Senior Construction Inspector | CEI

Sandra joined the firm in 1999 as a draftsman. With years of experience in drafting transportation projects, and for the past 16+ years in Construction Engineering Inspection, she is uniquely qualified as a senior construction inspector.

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Sandra joined the firm in 1999 as a draftsman. With years of experience in drafting transportation projects, and for the past 16+ years in Construction Engineering Inspection, she is uniquely qualified as a senior construction inspector. She is responsible for providing inspection services and excels in roadway construction projects. In addition, Sandra supervises new inspectors to strengthen their skills and ensure quality inspections on each project. Her vast experience in plans production strengthens her construction inspection abilities. Sandra is fully FDOT CTQP certified and maintains her training and certifications, while providing meticulous records and reporting for every project she is assigned to.

Tracy L. Chambliss

Chief Designer | Transportation

Tracy Chambliss joined the firm in 1997 and has demonstrated excellence in engineering design for all his years with DHM. His thoroughness and familiarity with plans design and production and greatly contributes to the success of quality plans production.

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Tracy Chambliss joined the firm in 1997 and has demonstrated excellence in engineering design for all his years with DHM. He is responsible for ensuring design plan calculations are accurate. His thoroughness and familiarity with plans design and production and greatly contributes to the success of quality plans production. He possesses great skill and technical expertise in the use of AutoCAD, MicroStation, and Geopak and is certified in CAD, Geopak Road I and II, Quantity Manager, Road Users Update, FDOT Advanced Geopak, FDOT Contract Estimating System, Traffic Control Plan Design, and more. He brings much expertise and familiarity to each project.

Robert A. (Tony) Peters

Chief Designer | Transportation

Tony joined the firm in 1999 working as a Draftsman in the Transportation Division. He has converted his skills, experience, and knowledge gained into the position of Chief Designer in the Design and Drafting Division.

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Tony joined the firm in 1999 working as a Draftsman in the Transportation Division. He has converted his skills, experience, and knowledge gained into the position of Chief Designer in the Design and Drafting Division. His attention to detail and familiarity with design standards ensures high quality plans, design and production. He is proficient in drafting software applications including AutoCAD, MicroStation and Geopak and maintains his certifications in Geopak Quantity Manager, FDOT Contract Estimating, Microstation, and Geopak Road. His years of experience and knowledge bring value and quality to each design project he is assigned.

Alicia Hicks-Coon, RLA, ASLA

Landscape Architect

Alicia is a seasoned veteran of landscape design, wetlands mitigation, and permitting, and full project management.

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Alicia joined DHM in August of 2016 in the position of Landscape Architect. She received her Bachelor of Science degree in Landscape Design and her Master of Science degree in Landscape Architecture, from Florida A&M University. Alicia is a seasoned veteran of landscape design, wetlands mitigation, and permitting, and full project management. She is experienced in developing subdivisions, designing and developing plans and specifications, providing architectural reviews, preparing as-built landscape and irrigation plans for contractors, and coordinating with federal, state, and local agencies regarding permitting and environmental compliance.

C. J. Wyckoff

Construction Inspector | CEI

J Wyckoff joined Melvin Engineering in 2016 as an Inspector with the Construction Engineering Inspection (CEI) Division after a successful and progressive 15-year career with the Florida Department of Corrections.

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CJ Wyckoff joined Melvin Engineering in 2016 as an Inspector with the Construction Engineering Inspection (CEI) Division. After a successful and progressive 15-year career with the Florida Department of Corrections, CJ was ready for a new career. The CEI team quickly recognized his enthusiasm to learn, work together, study, and to become a Certified Inspector. He is very dedicated and has gained experience on numerous significant roadway projects. His documentation skills are excellent as well as his understanding and knowledge of the construction activities and corresponding specifications. CJ is qualified, certified, and an asset to the CEI team, contractors, and clients.

Geoff Gonzalez, E.I.

Structural Engineer | Structural

Geoff provides excellent structural engineering support, including meticulous project calculations and design and detailing of construction documents.

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Geoff joined the firm in 2017 with his B.S. in Civil Engineering, having earned his Bachelor of Science degree in Civil Engineering from the Florida A&M University. He provides excellent structural engineering support, including meticulous project calculations and design and detailing of construction documents. Some of Geoff’s recent project portfolio is diverse, ranging from educational facilities, commercial, institutional, and more. Geoff brings tremendous value to each project and continues to expand his expertise with each assignment given.

Jamie MacDonnell Graham, P.E.

Senior Structural Engineer | Structural

Jamie joined DHM in 2015, and with over 14 years’ experience, Jamie is uniquely qualified as a Senior Level Project Manager and Supervisor.

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Jamie earned her Bachelor of Science degree in Civil Engineering from Florida State University in 2003. Jamie joined DHM in 2015, and with over 14 years’ experience, Jamie is uniquely qualified as a Senior Level Project Manager and Supervisor. She is responsible for design and preparation of full plan sets, including permitting, construction documents, and bid documents for commercial, residential, and government structures. Jamie is well versed in all aspects of project management and structural design. Additional areas of expertise are providing creative design solutions and foundation design and wind load analysis. Jamie has recently served as the Florida Engineers Society Big Bend Chapter President.

John Marc Tomlinson

Project Manager | Utilities

Marc's 20 years’ experience includes utilities systems design and operations, and as a Senior Designer in the Utilities Division of DHM.

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Marc joined DHM in 2007 having served in Public Works and as Interim City Manager for a local municipality. He earned his Associate of Science degree in Computer Graphics from Tallahassee Community College, in addition to receiving his Certification in Computer Aided Drafting and Design. His 20 years’ experience includes utilities systems design and operations, and as a Senior Designer in the Utilities Division of DHM. His responsibilities include design, cost estimating, project management, contract management, permitting, and construction engineering inspection. Marc continues to expand his expertise in roadway construction inspection, innovative utilities design, and grants administration, bringing much value to each project.

Justin Hancock

Construction Inspector | CEI

Justin ensures all paperwork is filed properly, activities are recorded accurately, and response to contractors and clients is immediate. He holds FDOT CTQP certifications and is detail oriented.

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Justin joined DHM in 2016 in the Construction Engineering Inspection Division. His enthusiasm and commitment to performing all duties within the CEI Division is apparent as demonstrated in current projects. He holds FDOT CTQP certifications and is detail oriented. Justin ensures all paperwork is filed properly, activities are recorded accurately, and response to contractors and clients is immediate. His previous experience working with a local contractor, and with the City of Indianapolis Public Works Department as community interface, emergency investigations, and inspection of roadways, parks, wastewater, and other public works areas of service, is a tremendous asset to the team and all projects he is assigned to.

Paul Davidson, P.E., M.S., C.G.C., LEED AP BD+C

Civil Engineer, General Contractor | Civil

Paul provides creative design solutions, excellent project management standards, and meticulous attention to details for every project.

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Paul joined the Structural Division of Melvin Engineering in 2015, with 3 years of experience after graduating from Florida State University (FSU). He obtained his Engineering Intern designation prior to graduating from FSU with a degree in Civil Engineering and received his Master of Science degree in Construction Management from Florida International University. He is LEED AP BD+C certified, a Florida certified General Contractor, and is a Florida Qualified Stormwater Management Inspector. Paul is responsible for design and preparation of full plan sets, including permitting, construction documents, and bid documents for commercial, residential, and institutional structures and site development. He provides creative design solutions, excellent project management standards, and meticulous attention to details for every project.

Paula Weeks

Grant Administrator | Grants Administration

Paula is detail oriented, making her an expert in time management and quality control.

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Paula joined the firm in 2019 and is responsible for grants administration including application preparation. Having worked at the Panhandle Area Educational Consortium for over 18 years, she brings a high level of familiarity and experience with grant funded programs from various federal, state, and local agencies. Paula is detail oriented, making her an expert in time management and quality control.

Ryan Hughes

Project Engineer | Transportation

Ryan joined DHM in 2016, in the Construction Engineering and Inspection Division, and has since earned his Bachelor of Science degree in Civil Engineering from Florida State University.

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Ryan joined DHM in 2016, in the Construction Engineering and Inspection Division, and has since earned his Bachelor of Science degree in Civil Engineering from Florida State University. Ryan obtained valuable experience on FDOT CEI projects and is CTQP Certified. He has transitioned into the Transportation Design division to further develop his engineering abilities. His documentation skills are excellent as well as his understanding and knowledge of the construction activities, design intent, and corresponding specifications. Ryan’s responsibilities include performing field reviews for advertised projects along with reviewing plans and specifications of the design engineer.

O. Sean Martin, P.E., SECB, LEED, AP BD+C

Senior Engineer | Structural

With over 20 years’ experience, Sean is a seasoned and innovative engineer, always bringing meticulous detail and quality to each design project.

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Sean, a graduate of Florida State University, joined David H. Melvin, Inc. in 1996. He holds a Masters’ in Structural Engineering from Florida State University and currently is a doctoral candidate in structural engineering. With over 20 years’ experience, Sean is a seasoned and innovative engineer, always bringing meticulous detail and quality to each design project. His responsibilities include project management for civil and structural projects, providing quality assurance, guidance and support as needed for the Structural team and support staff. Sean is also licensed to perform Special Inspection services.

James Thomas (Tommy) Hays

Construction Inspector | CEI

Tommy’s communication skills and strong desire to learn and change his career path makes him an asset to our team of inspectors and clients.

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Tommy joined DHM in 2019, after a successful career in retail management in the grocery industry. Prior to coming on board with Melvin Engineering, he worked as an Assistant Truck Certification Specialist for post hurricane operations. Tommy’s communication skills and strong desire to learn and change his career path makes him an asset to our team of inspectors and clients. He continues to aggressively pursue additional FDOT CTQP certifications while providing construction inspection services throughout the region on various projects.

Bill Nobles, P.E.

Senior Project Engineer | Utilities

As a Senior Level Engineer, Bill is responsible for the design and construction management of municipal water distribution systems, water treatment plants, wastewater collection systems, wastewater treatment plants and natural gas distribution projects.

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As a Senior Level Engineer, Bill is responsible for the design and construction management of municipal water distribution systems, water treatment plants, wastewater collection systems, wastewater treatment plants and natural gas distribution projects. In addition, Bill is responsible for the management and coordination of special projects relating to civil and structural engineering. Tasks often include research, design, estimating, budgeting, and scheduling. Additional areas of expertise are specialty engineering design and solar WWTP design, project management and quality assurance.

Harrison (Ris) Martin

Engineering Support, BIM/CAD Technician | Structural

Ris provides excellent engineering support, BIM/CAD drawings for plans production, modeling, design and detailing, calculations, and field review.

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Ris joined Melvin Engineering in 2014 on a part-time basis, prior to graduating from Chiles High School. He provides excellent engineering support, BIM/CAD drawings for plans production, modeling, design and detailing, calculations, and field review. He reviews existing drawings and is detail oriented in field documentation. His areas of expertise are Autodesk Revit (BIM) and AutoCAD Architecture, creating 3D models of structural projects, and is also proficient in Bluebeam Revu. He is currently balancing his workload at the firm while attending Tallahassee Community College, as a third year Civil Engineering student.