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Engineering Firms
Ranked by No. DE Employees
RankCompany
No. DE Employees
Company Description
Notable DE Projects
Person in charge
Year Founded
1
Pennoni
121 Continental Drive, Suite 207
Newark, DE 19713
www.pennoni.com
(302) 655-4451
113
A multidisciplinary firm covering construction, environmental, landscape architecture, MEP, survey and geomatics, infrastructure, and water resources.
DELDOT Bridge Ratings
Brownfield Investigation at Curtis Mill
I-95 Rehabilitation
Cool Spring Reservoir Park
Edward F Rasiul (VP, Office Director, Newark )
Mark Davidson (Assoc. VP, Office Director, Milton)
1966
2
Century Engineering
4134 N. DuPont Highway
Dover, DE 19901
www.centuryeng.com
(302) 734-9188
111
Century Engineering, Inc. is a full-service consulting, planning, engineering, surveying and inspection firm. Offering services in Civil, Survey, Geotechnical, Landscape Architecture, Mechanical, Electrical, Plumbing, Structural, Environmental and Transportation engineering.
Delaware City DMV
City of Lewes Pedestrian Improvements
The Capital City Trail
I-95 & US-202 Interchange
Scott L. Rathfon, P.E. (Executive Vice President)
1977
3
KCI Technologies Inc.
1352 Marrows Road, Suite 100
Newark, DE 19711
www.kci.com
(302) 731-9176
109
KCI is a 100 percent employee-owned engineering, consulting and construction firm that offers multi-discipline services to transportation, water, utility and facilities clients throughout the U.S.
I-95 & SR141 Interchange Town Engineer for Smyrna Route 301 Bypass Chester Water/Rising Sun Interconnect MS4 Compliance
Ryan Flickinger (Practice Leader, Newark Office Manager)
Daniel E String (Dover Office Manager)
1955
4
R.C. Fabricators, Inc.
824 North Locust St.
Wilmington, DE 19801
www.rcfabricators.com
(302) 573-8989
100
Structural Steel Erection & Fabrication Misc. Metals Erection & Fabrication Industrial Platforms & Processing Schools & Hospitals & Commercial
Christiana Hospital Maternity Wing, Love Creek Elementary, Laurel Elementary, Middle & High School, Seaford High School, Pilot Charter School, Wilmington University, NCC Courthouse
Daniel Reutter, Jr. (President)
Rebecca Suppe (CEO)
1983
TekSolv
130 Executive Drive Suite 5
Newark, DE 19702
www.teksolv.com
(302) 738-1050
100
TekSolv provides professional services to industrial markets with a focus on safety training services, engineering consultation, systems integrations, oilfield automation, and occupational health service. They specialize in the oil/gas petrochemical and energy industries.
DND
John Mouser (CSP, President)
1999
6
Duffield Associates, Inc.
5400 Limestone Rd
Wilmington, DE 19808
www.duffnet.com
(302) 239-6634
90
Duffield Associates is an engineering firm and provider of geoscience technology. Their firm fosters a “living green” culture and uses their experience to accomplish client’s engineering and geoscience objectives.
UD STAR Campus; First State Crossing Redevelopment, Chemours Edgemoor Site Conversion, Cavaliers CC Redevelopment, Fort DuPont Redevelopment; Incyte HQ; Port of Wilmington
Stacy Ziegler (CEO)
Deirdre Smith (COO)
Guy Marcozzi (President)
1976
7
Tetra Tech
240 Continental Drive
Newark, DE 19713
tetratech.com
(302) 738-7551
68
Tetra Tech has been providing professional services in Delaware for nearly 70 years. The company provides environmental services from planning and permitting to EHS compliance to environmental remediation.
DelDOT Rt. 141 Bridge asbestos removal Upper Darby Landfill Project Watson Johnson Landfill Project
Robert M Maffia, AIA, LEED AP BD+C (VP / Delaware Operations Manager)
1949
8
DEDC, LLC
315 South Chapel Street
Newark, DE 19711
www.dedc-eng.com
(302) 738-7172
62
DEDC is a full service multi discipline engineering and design firm. Offering service in HVAC, electrical, plumbing, process/chemical, structural and instrumentation/control engineering.
WSFS HQ
DuPont Building Renovations
DuPont Solar Research Facility
Pizza By Elizabeth
Howard P. Krinsky (Principal)
2010
9
BrightFields, Inc.
801 Industrial Street
Wilmington, DE 19801
www.brightfieldsinc.com
(302) 656-9600
48
BrightFields, Inc. is a woman-owned, full-service environmental consulting, evaluation, investigation, and remediation services firm. They specialize in the cleanup and redevelopment of contaminated properties.
Brownfield redevelopment of Wilmington Riverfront

Marian R Young (President)
Mark A Lannan (Principal)
2003
10
Nowland Associates, Inc.
2009 Ogletown Rd
Newark, DE 19711
nowlandassociates.com
(302) 731-1333
42
Nowland Associates can successfully and professionally manage a project from conception to completion. Their staff of project managers, on-site superintendents, estimators, engineers, architects and skilled craftsmen can assist with site selection and development to building design, budgeting and construction, post occupancy issues and maintenance.
Gore Papermill Offices
Hockessin Memoral Hall
St. Andrews Library Renovations
Wilmington Friends School Global Learning Center
Jeff Nowland (Owner)
Gifford M Nowland (VP, COO)
Jeffrey D Nowland (President, CEO)
James E Nowland (VP, CFO)
1942
11
Davis, Bowen & Friedel, Inc.
1 Park Ave.
Milford, DE 19963
www.dbfinc.com
(302) 424-1441
39
Davis, Bowen & Friedel, Inc. provides sustainable services in architecture, engineering, planning, and surveying. Offering new building design, restoration, facility support, feasibility studies, ecosystem restoration, and mapping services for their clients.
Atlantic Sands Hotel
Bayville Shores
Greenwood Library
Michael E Wheedleton, AIA (Principal)
Zac Crouch, P.E. (Principal)
Ring W Lardner, P.E. (Principal) Principals
1983
12
Becker Morgan Group
309 S Governors Ave.
Dover, DE 19904
www.beckermorgan.com
(302) 734-7950
33
Becker Morgan Group designs solutions to balance function and creativity, while respecting their clients' budget, schedule, and programmatic requirements.
Dover International Speedway; Dover Downs Hotel & Casino; William F Cooke, Jr. Elementary School; DuPont Environmental Education Building
W. Ronald Morgan (President)
Gregory V. Moore (VP)
J. Michael Riemann (Principal)
Brad A Hastings (VP)
1983
VanDemark & Lynch, Inc.
4305 Miller Road
Wilmington, DE 19802
www.vdleng.com
(302) 764-7635
33
VanDemark & Lynch approaches each project by seeking innovative and practical solutions to complex and evolving circumstances. As experts in navigating regulatory approvals, they have successfully designed sites for projects through-out Delaware. Their expertise encompasses institutional, commercial, industrial sites, and residential developments.
Port of Wilmington Flood Control
Town of Whitehall - Mapleton Village
JP Morgan Data Center
Townsend Fire Station
Stephan Lehm (President)
Lisa Donlon (Project Manager)
1937
14
Environmental Alliance, Inc.
5341 Limestone Road
Wilmington, DE 19808
www.envalliance.com
(302) 234-4400
32
Environmental Alliance, Inc. works to provide effective cleanup strategies to eliminate contamination from sites in order to promote human health and sustain the quality of the environment.
DND
William Smith, P.G. (President / Principal Hydrogeologist)
Mike Vanderslice (VP Sales and Marketing)
Paul Miller, P.E. (VP/ Principal Engineer)
1991
Paragon Engineering
708 Philadelphia Pike
Wilmington, DE 19809
www.paragon-eng.com
(302) 762-6010
32
Paragon Engineering Corp. is a privately owned, full service mechanical and electrical engineering firm located in Wilmington. PEC provides consulting services for new and renovated commercial, institutional, governmental and industrial sites.
Delaware School for the Deaf; Delaware Army National Guard Aviation Support Facility; W.L. Gore & Associates Renovations; Tatnall School Performing Arts Center
David P. Bobiak (P.E., LEED AP)
1985
16
Karins and Associates
17 Polly Drummond Center, Suite 201
Newark, DE 19711
karinsengineering.com
(302) 369-2900
30
Karins & Associates specializes in civil engineering, planning, surveying, laser scanning and construction services with knowledge of local regulatory processes.
Hindu Temple of Delaware Expansion
The Village of Bayberry
IKO Manufacturing
Dev Sitaram (President)
James Curran (Project Manager)
1973
Landmark Science & Engineering
200 Continental Dr., Suite 400
Newark, DE 19713
landmark-se.com
(302) 323-9377
30
Landmark Science & Engineering is an integrated civil engineering, surveying, and environmental consulting firm specializing in civil engineering, water resources, landscape design, ecology, remediation, land surveying and GIS mapping.
Kent County Courthouse Expansion
Commons at Little Falls
Newark Charter Primary School
Mill as White Clay Creek Brownfield Adaptive Re-Use
Ted C Williams (Principal, President)
Janet Pippert (Business Development & Marketing)
Helen V Apostolico (Principal, CFO)
1987
18
Studio Jaed
2500 Wrangle Hill Rd, Ste 110
Bear, DE 19701
www.studiojaed.com
(302) 832-1652
22
Studio JAED serves the planning, design and construction document/administration needs of educational, governmental, industrial, commercial, and private clients across the nation. They offer full services in architecture as well as mechanical and electrical engineering.
Delaware DNREC Field Facility
Seaford High School
Lewes Energy Audit & Design Upgrades
Jim Hutchison (CEO)
1978
19
Kellogg Brown and Root
242 Chapman Road
Newark, DE 19702
www.kbr.com
(302) 452-9000
20
KBR is a global provider of differentiated professional services and technologies across the asset and program life cycle within the Government Services and Hydrocarbons sectors.
DND
Pete Howe (Director of Engineering Operations)
1919
20
Blake and Vaughan Engineering, Inc.
800 Woodlawn Avenue
Wilmington, DE 19805
www.blakevaughan.com
(302) 888-1780
15
Blake and Vaughan Engineering, Inc. specializes in building control and automation systems, fire suppresion systems, emergency power back-ups, photo voltaic systems, security and surveillance systems.
Mike's Famous Harley-Davidson
Bethany Blue's
Jeff Vaughan (Principal)
Dan Blake ( Principal)
2003
21
Cooperson Associates
1504 N French St
Wilmington, DE 19801
www.coopersonassoc.com
(302) 655-1105
9
Cooperson Associates offers professional experience with diverse building types: institutional, commercial, medical, educational, judicial, governmental, religious, recreational, and residential — both single and multi-family. With work encompassing the design of new structures and the renovation, remodeling, expansion and adaptive reuse.
Ashland Nature Center
Beth Shalom Synagogue
Smyrna Opera House
New Castle Courthouse
Jay N. Cooperson (Principal)
Michael E. Lukshides (Partner)
2008
22
Bohler Engineering
18958 Coastlal Hwy, Suite D
Rehoboth Beach, DE 19971
bohlerengineering.com
(302) 644-1155
8
Bohler Engineering provides consulting services for land development projects. Integrating multiple disciplines of civil engineering to simplify the development process for their clients. With clients spanning multiple market sectors including retail, industrial, government, healthcare, & residential.
DND
Dave Kuklish (Associate, Bohler Delaware Branch Manager)
1981
Larson Engineering Group, Inc
910 S Chapel St. Suite 200
Newark, DE 19713
larsonengineering.net
(302) 731-7434
8
Larson Engineering Group, Inc. designs have included land planning, site layout, water and sewer distribution, storm drainage, storm water management, erosion and sediment control, parking facilities, road design, and entrances.
Deer Park Plaza
Four Seasons Plaza
Johnson Farm Residential Development
Paper Mill Plaza
George H Larson (President)
1996
24
ForeSite Associates
208 Delaware St.
New Castle, DE 19720
www.foresiteassociates.com
(302) 351-3421
7
ForeSite Associates, Inc. brings a diverse range of technical solutions to their industrial, commercial, and municipal clients. They maintain a strong desire to continue to build upon their firmly established reputation for providing quality consulting services for civil engineering and land planning.
DND
Andrew Hayes
2005
25
Tech International Corp
102 Webster Bldg, 3411 Silverside Road
Wilmington, DE 19810
www.techinternationalcorp.com
(302) 478-2301
6
Tech International Corp. has employed different technologies and solutions to enable better information capture, analysis and management. They utilize customized mobile computing devices for extensive asset data collection and mapping involving assets such as pipelines, sewers, valves, hydrants, pump stations, facility lighting, and road assets.
Wastewater Treatment Plant Upgrades
City of Wilmington Transportation CIP Program

Eugene Amobi (President)
1999
26
Archology
107 S Washington St
Milford, DE 19963
www.archologyde.com
(302) 339-5566
4
Archology believes every building site offers opportunities afforded by the mixture of built and natural features on and around a site. The goal of their firm is to mix Architecture with Ecology to create spaces that enhance the value of their client’s construction dollar.
DND
Mark Redden (Principal)
2010