These Canadian civil engineering firms are mostly large to mid-sized, with a strong focus on infrastructure, environmental solutions, and sustainable community development. Companies like SNC-Lavalin specialize in global engineering services and nuclear organizations, while EXP provides engineering, architecture, design, and consulting. Associated Engineering focuses on building sustainable communities, and Candu Energy Inc. develops CANDU® reactors for clean electricity.
A notable pattern among these companies is their diverse geographical spread across Canada, with several headquartered in major urban centers like Montreal, Edmonton, and Vancouver. Many also have a long history, with firms such as EXP (founded 1906) and Armtec (founded 1908) demonstrating a foundational presence in the industry.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
SNC-Lavalinatkinsrealis.com
Global engineering services and nuclear organization connecting people, data, and technology to transform infrastructure and energy systems worldwide. |
11,913 | |||
| 2 | 4,949 | ||||
| 3 |
WSP | MMM Groupwspgroup.ca
A Canadian multinational specializing in engineering consulting, urban planning, environmental remediation, and sustainable transportation solutions with a global presence |
1,788 | |||
| 4 |
Candu Energy Inc.snclavalin.com
A leading developer of CANDU® reactors, providing clean and reliable electricity solutions internationally while meeting top safety and regulatory standards |
1,187 | |||
| 5 |
Associated Engineeringae.ca
A Canadian company specializing in building sustainable communities, providing engineering and environmental consulting services, and offering creative solutions for clients worldwide |
1,101 | |||
| 6 |
Urban Systems Ltd.urbansystems.ca
UrbanSystems is an employee-owned consulting firm dedicated to building prosperous, sustainable, and healthy communities through collaboration and outstanding talent |
843 | |||
| 7 |
BGC Engineering Inc.bgcengineering.ca
An international consulting firm specializing in applied earth sciences, offering a wide range of services to address complex engineering and geoscience challenges |
834 | |||
| 8 |
RJC Engineersrjc.ca
A national company specializing in structural engineering, restoration, building science, glass design, and energy modeling, with a focus on sustainability and employee ownership |
753 | |||
| 9 | 723 | ||||
| 10 |
ISLislengineering.com
ISL provides integrated community infrastructure services including planning, design, and construction management by assembling specialized teams for each project |
676 | |||
| 11 |
Egis in Canadaegis-group.com
A leading engineering firm in North America that provides consulting and technical solutions for projects, prioritizing client service, innovation, and employee development |
586 | |||
| 12 |
Armtecarmtec.com
Supplier of innovative drainage equipment and solutions for roadways, stormwater management, rehabilitation, and erosion control, focusing on custom, cost-effective solutions for timely project completion |
558 | |||
| 13 |
ConeTecconetec.com
A full-service contractor specializing in geotechnical, geoenvironmental, and mining site investigations Provides a range of services with modern equipment and expert personnel |
524 | |||
| 14 |
Béton Provincialbetonprovincial.com
Specializing in high-quality concrete, asphalt, prefabricated products, and aggregate for construction projects, offering exceptional service and modern, durable solutions across multiple locations |
518 | |||
| 15 |
Groupe ABSgroupeabs.com
Established in 1993, Groupe ABS offers a wide range of services in material engineering, geotechnics, environmental science, and specialized divisions in drilling and contaminated soil treatment |
492 | |||
| 16 |
Tetra Tech au Québectetratech.com
A global leader in consulting, engineering, and technical services with expertise in various sectors, providing innovative solutions for projects worldwide |
485 | |||
| 17 |
Thurber Engineering Ltd.thurber.ca
An established Canadian consulting firm providing various engineering and testing services with a team of experienced professionals in multiple offices across Canada |
474 | |||
| 18 |
Conestoga-Rovers & Associates (CRA), A GHD Companyghd.com
A global leader in engineering, environmental consulting, and construction services created through a merger in July 2014 Visit website for more information |
473 | |||
| 19 |
MTE Consultantsmte85.com
A team of 450 professionals providing engineering consulting services in civil, structural, environmental, geotechnical engineering, and surveying with shared accountability |
444 | |||
| 20 |
Tetra Tech EBAeba.ca
A values-based engineering and sciences organization offering diverse consulting services in Western and Northern Canada, emphasizing innovation, community improvement, and employee development |
432 | |||
| 21 |
MPE a division of Englobempe.ca
An engineering consulting division with ten offices across western Canada, providing world-class expertise and maintaining strong client relationships since 1983 |
422 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 22 |
R.J. Burnside & Associates Limitedrjburnside.com
Employee-owned engineering and environmental consultancy firm with expertise in various disciplines, serving clients in Canada and internationally with responsive services and a positive working environment |
407 | |||
| 23 | 391 | ||||
| 24 |
Binniebinnie.com
A multidisciplinary firm in BC offering civil engineering, construction services, urban landscape architecture, project management, and geomatics for communities |
363 | |||
| 25 |
GEMTEC Consulting Engineers & Scientists Limitedgemtec.ca
A multidisciplinary team providing geotechnical engineering, materials testing, and environmental engineering services across Eastern and Atlantic Canada with a focus on growth and talent development |
328 | |||
| 26 |
T2 Utility Engineerst2ue.com
Specializing in utility engineering services, T2 Utility Engineers offers expertise in SUE, CCTV, coordination, and survey to support infrastructure projects in Canada and the United States |
258 | |||
| 27 |
Tatham Engineeringtathameng.com
Employee-owned consulting engineering firm specializing in civil, electrical & mechanical engineering services, with expertise in various sectors, recognized as a top employer in Canada |
213 | |||
| 28 |
Atlantic Industries Limitedail.ca
AIL offers efficient solutions in bridge and infrastructure projects, with a range of products like structural plate bridges, retaining walls, and drainage solutions |
181 | |||
| 29 |
Soil Engineers Ltd.soilengineersltd.ca
A trusted company since 1976, specializing in site investigations, engineering studies, quality control, material testing, inspections, environmental consulting, and project management |
160 | |||
| 30 |
Loiselle Inc.loiselle.ca
General contractor specialized in civil engineering, excavation, environmental work, snow removal, and road network maintenance and operation ISO 9001:2015 certified |
157 | |||
| 31 |
Le Groupe GIEgieinc.ca
Established in 1983, this engineering company offers quality services using standardized and innovative technologies for institutional, industrial, and commercial asset management |
154 | |||
| 32 |
Delcan, A Parsons Companyparsons.com
Multidisciplinary firm providing engineering, planning, management, and technology solutions in Rail, Transit, Roads, Highways, Structures, Water, Freight, and ITS markets globally |
149 | |||
| 33 |
StructureCraftstructurecraft.com
An award-winning firm with specialized builders and creative structural engineers, designing and erecting efficient and beautiful wood structures globally since 1998 |
147 | |||
| 34 |
DSEL - David Schaeffer Engineering Ltd.dsel.ca
A technology-driven company focused on creative engineering solutions for large subdivisions, offering training, mentorship, and opportunities for career advancement |
134 | |||
| 35 |
ASI Groupasi-group.com
An experienced firm offering advanced underwater services worldwide, specializing in marine construction, commercial diving, biofouling control, and underwater vehicle operations |
106 | |||
| 36 |
SIMCO Technologiessimcotechnologies.com
Analyzes, designs, maintains civil engineering structures. Supports asset management decisions using sophisticated materials analysis and service-life predictive technologies for concrete infrastructure. |
66 | |||
| 37 |
Divex Marine Incdivexmarine.com
Established in 1963, specializing in underwater work to support maritime enterprises, engineering firms, public agencies, and construction companies with reliable and rigorous service |
21 | |||
| 38 |
Walker Projects a division of MBC-Groupmbc-group.ca
Innovative engineering firm delivering cost-effective solutions across various industries through an integrated service-based approach for value enhancement |
15 | |||
| 39 |
Cascara Consulting Engineers Limitedcascara.ca
Specialized engineering firm offering civil infrastructure design, subdivision design, water/sewer modeling, marine protection, hydrology, and more with direct senior professional communication |
9 | |||
| 40 |
GEOFITgeofitameriques.ca
GEOFIT offers tailored solutions in information systems, geomatics, and application development for engineering firms, municipalities, and other businesses Contact us for your projects |
5 | |||
| 41 |
Delta Innoveeringdeltainnoveering.com
A Canadian engineering firm specializing in creative solutions for technical challenges, combining innovation and engineering to add value to projects |
4 | |||
| 42 |
Southern Ontario Consultancy Ltdsoconsult.ca
An engineering company providing professional services in structural design, project management, geotechnical design, site supervision, and specialized consultancy since 2015 |
3 | |||
| 43 |
ProspEx 2015prospexcanada.ca
Innovative energy industry solutions provider offering project services from planning to completion, prioritizing client requirements and financial implications |
2 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.
More company lists in Canada
- The largest companies in Canada 11,082
- Multinational companies in Canada 1,934
- Manufacturers in Canada 946
- Retail chains in Canada 851
- Critical infrastructure operators in Canada 767
- Public sector organisations in Canada 698
- Financial services firms in Canada 687
- Companies with in-house R&D in Canada 678
- Logistics companies in Canada 593
- Truck Transportation companies in Canada 581
- SaaS companies in Canada 543
- Hardware manufacturers in Canada 502
- Energy companies in Canada 497
- Software Development companies in Canada 484
- Professional services firms in Canada 481
- IT Services and IT Consulting companies in Canada 477
- Transportation, Logistics, Supply Chain and Storage companies in Canada 464
- Distributors and wholesalers in Canada 452
- Financial Services companies in Canada 432
- Healthcare providers in Canada 416
- Construction companies in Canada 391
- Oil and Gas companies in Canada 380
- Companies with a mobile app in Canada 367
- Retail companies in Canada 358