Alabama's engineering consulting companies play a critical role in the state's infrastructure development and project management sectors. These firms range from small specialists to large established players, providing services such as civil, environmental, and structural engineering. With an increasing emphasis on sustainability and safety, the industry is adapting to challenges like climate change and technological advancements in engineering practices. The market is also seeing a growing demand for integrated solutions that combine different engineering disciplines, signaling a push towards a more collaborative approach in project execution.

The companies highlighted in this list vary in size from small teams of around ten to large firms exceeding 5,000 employees. Many are headquartered in prominent cities like Mobile and Birmingham and span decades of experience since their establishments in the mid-20th century. Their expertise covers vast areas including construction, infrastructure, and environmental consulting, showcasing the robust capabilities of Alabama's engineering consulting sector.

Continue reading to discover the top engineering consulting companies in Alabama.

Top 21 Engineering Consulting Companies in Alabama

1. Hargrove Engineers & Constructors

• Website: hargrove-epc.com
• Ownership type: Private
• Headquarters: Mobile, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1995
• Headcount: 1001-5000
• LinkedIn: hargrove-engineers-constructors

Hargrove Engineers & Constructors, founded in 1995 and based in Mobile, Alabama, is a private service company that specializes in engineering and construction solutions. With a workforce of approximately 1,964 employees, the company provides a comprehensive suite of services, including project management, engineering design, and automation. Hargrove operates across various sectors, notably in manufacturing and oil and gas, where they focus on improving operational efficiency and safety for their clients. Their capabilities extend to project execution, procurement, and construction management, making them a versatile player in the engineering consulting space. Hargrove is also recognized for its commitment to sustainability and safety, which are integral to their operational philosophy. The company has successfully executed over 22,000 projects and served more than 2,100 client facilities, showcasing their extensive experience and industry involvement.

2. Goodwyn Mills Cawood (GMC)

• Website: gmcnetwork.com
• Ownership type: Private
• Headquarters: Montgomery, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1947
• Headcount: 501-1000
• LinkedIn: goodwyn-mills-and-cawood

Goodwyn Mills Cawood (GMC) is a prominent architecture and engineering firm based in Montgomery, Alabama, with a history dating back to 1947. The company employs around 582 professionals and operates multiple offices across the Southeastern United States, including locations in Alabama, Florida, Georgia, Louisiana, North Carolina, South Carolina, and Tennessee. GMC provides a wide array of services, such as engineering in water, transportation, land development, geotechnical, and electrical fields, alongside architecture, interior design, and environmental consulting. Their projects often focus on infrastructure development, community planning, and disaster recovery, showcasing their commitment to enhancing public spaces and services. GMC has been recognized for its contributions to the industry, including accolades from Engineering News-Record (ENR), which highlights their successful projects and community impact.

3. Volkert, Inc.

• Website: volkert.com
• Ownership type: Private
• Headquarters: Mobile, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1925
• Headcount: 1001-5000
• LinkedIn: volkert-inc.

Volkert, Inc. is a consulting firm based in Mobile, Alabama, with a rich history that spans nearly a century. Founded in 1925, the company has built a reputation for providing comprehensive engineering, environmental consulting, program management, and construction services. Volkert serves a wide array of clients, including municipalities and private developers, focusing on infrastructure projects that are crucial for community development. Their services cover various aspects of planning and environmental studies, design and engineering, as well as program and construction management. Volkert emphasizes sustainability and regulatory compliance, ensuring that their projects not only meet client needs but also adhere to environmental standards. The firm has been involved in significant infrastructure projects, contributing to the enhancement of transportation systems, energy facilities, and urban planning initiatives. With a workforce of over 1,000 employees, Volkert remains a key player in the engineering consulting sector, dedicated to improving the communities they serve.

4. TTL, Inc.

• Website: ttlusa.com
• Ownership type: Private
• Headquarters: Tuscaloosa, Alabama, United States (USA)
• Employee distribution: United States (USA) 99%
• Founded year: 1964
• Headcount: 201-500
• LinkedIn: ttl-usa

TTL, Inc., based in Tuscaloosa, Alabama, is an engineering firm that specializes in integrated infrastructure solutions for both public and private clients. Established in 1964, TTL has built a robust portfolio that includes civil, transportation, and geotechnical engineering, as well as environmental consulting services. The firm operates primarily across the Southern United States, tackling complex engineering challenges while ensuring compliance with regulatory standards. TTL's recent recognition as one of the Top 500 design firms by Engineering News-Record underscores its growth and commitment to quality service. With a workforce of approximately 450 employees, TTL is dedicated to delivering tailored solutions that meet the unique needs of its clients, demonstrating a proactive approach to project delivery and client engagement.

5. Mesa Associates, Inc

• Website: mesainc.com
• Ownership type: Private
• Headquarters: Madison, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1988
• Headcount: 1001-5000
• LinkedIn: mesa-associates-inc

Mesa Associates, Inc. is an engineering and consulting firm based in Madison, Alabama, specializing in multi-discipline services for electric utility, heavy industrial, and government clients. Established in 1988, the company has grown to employ over 1,000 professionals and operates across 19 offices in the United States. Mesa offers a wide range of services, including engineering design, project management, control system automation, and technology solutions. They have a strong focus on sectors such as power generation, renewables, and transmission and distribution. Mesa's commitment to quality and integrity is reflected in their long-standing relationships with over 200 clients, and they have successfully delivered projects on four continents. The firm also emphasizes corporate responsibility through community outreach initiatives, reinforcing their role as a socially conscious entity in the engineering consulting space.

6. Sain Associates, Inc.

• Website: sain.com
• Ownership type: Private
• Headquarters: Birmingham, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1972
• Headcount: 51-200
• LinkedIn: sain-associates-inc-

Sain Associates, Inc., based in Birmingham, Alabama, is a private engineering consulting firm founded in 1972. With a workforce of approximately 98 employees, the company has carved out a niche in civil engineering, transportation planning, geographic information systems (GIS), construction engineering and inspection, and surveying services. They serve a variety of clients, including government agencies, educational institutions, and commercial developers. Sain Associates prides itself on delivering high-quality project management and engineering solutions, which has earned them recognition through several awards, such as the ACEC of Alabama Engineering Excellence Awards. Their extensive experience and commitment to client relationships have made them a respected name in the engineering consulting industry.

7. Three Notch Group

• Website: cdge.com
• Ownership type: Private
• Headquarters: Andalusia, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1946
• Headcount: 201-500
• LinkedIn: cdg-engineers-%26-associates

Three Notch Group, known as CDG, Inc., is an engineering consulting firm based in Andalusia, Alabama. Founded in 1946, the company has built a reputation for providing a comprehensive range of engineering and consulting services. CDG specializes in areas such as civil/site development, construction engineering and inspection, environmental consulting, and emergency response management. They serve a variety of clients, including public entities, private enterprises, and the petroleum industry, helping them navigate regulatory compliance and environmental challenges. With a workforce of over 200 employees, CDG is equipped to handle projects that require both technical expertise and a deep understanding of regulatory frameworks. Their commitment to sustainability and project success is evident in their approach to client relationships and project management.

8. Optimal GEO

• Website: optimalgeo.com
• Ownership type: Corporate
• Headquarters: Athens, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: September 2021
• Founded year: 2005
• Headcount: 51-200
• LinkedIn: optimal-geomatics

Optimal GEO is a consulting agency based in Athens, Alabama, specializing in architecture, engineering, and geospatial services. Founded in 2005, the company has built a reputation for providing a wide range of solutions tailored to both government and private sector clients. Their focus includes infrastructure development, facility assessments, and the implementation of advanced technologies. Optimal GEO's expertise spans various industries, such as transportation, utilities, and education, ensuring effective project delivery and client satisfaction. The firm employs a team of skilled professionals dedicated to addressing complex engineering challenges, utilizing state-of-the-art technology to enhance project outcomes.

9. Gulf States Engineering, Inc.

• Website: gseeng.com
• Ownership type: Private
• Headquarters: Mobile, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1998
• Headcount: 51-200
• LinkedIn: gse-consulting-engineers

Gulf States Engineering, Inc. is a private engineering firm based in Mobile, Alabama, founded in 1998. With a workforce of approximately 90 employees, the company specializes in a broad spectrum of engineering services, including structural, mechanical, electrical, and civil engineering. They cater to various sectors, notably aerospace and manufacturing, and are known for their innovative design solutions that tackle complex engineering challenges. GSE has been involved in significant projects, such as the Airbus Final Assembly Line and modifications for NASA's Space Launch Systems manufacturing. Their commitment to quality and client satisfaction is evident in their approach to project management and execution, ensuring successful outcomes for their clients. GSE operates primarily within the United States but is also licensed in Canada, Mexico, and Puerto Rico, indicating a regional influence in the engineering consulting market.

10. Poly, Inc.

• Website: poly-inc.com
• Ownership type: Private
• Headquarters: Dothan, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1959
• Headcount: 51-200
• LinkedIn: poly-inc

Poly, Inc. is an engineering and architecture firm based in Dothan, Alabama, with a rich history that began in 1959. The company specializes in a variety of services, including architectural design, engineering solutions, environmental consulting, and federal services. With a dedicated team of professionals, Poly, Inc. serves municipal clients and government agencies, focusing on delivering high-quality projects that adhere to specific regulatory requirements. Their portfolio includes notable projects such as the design of military training ranges and various infrastructure improvements, reflecting their expertise in both engineering and environmental sectors. The firm has built strong relationships with clients over decades, ensuring a reputation for reliability and professionalism in the engineering consulting industry.

11. PSE Designs

• Website: psedesigns.com
• Ownership type: Private
• Headquarters: Mobile, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2003
• Headcount: 11-50
• LinkedIn: pse-designs

PSE Designs, Inc. is a consulting engineering firm based in Mobile, Alabama, founded in 2003. The company specializes in a range of engineering services, including civil, structural, mechanical, and electrical engineering, as well as project and construction management. PSE Designs serves clients primarily in the commercial and industrial sectors, providing tailored solutions that address specific project needs. The firm prides itself on its commitment to safety, quality, and client satisfaction, which has resulted in approximately 95% of their projects coming from returning clients. With a team of 16 employees, PSE Designs has demonstrated its ability to adapt to market demands, taking on projects of varying scales, from small residential inspections to multi-million dollar industrial facilities. Their approach emphasizes collaboration and communication, ensuring that clients are involved throughout the project lifecycle. PSE Designs operates from two offices in Alabama, maintaining a strong local presence while delivering comprehensive engineering solutions.

12. Driven Engineering, Inc.(trademarked)

• Website: drivenengineering.com
• Ownership type: Private
• Headquarters: Semmes, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: driven-engineering-inc--tm-

Driven Engineering, Inc. is a consulting engineering firm based in Semmes, Alabama, established in 2006. The company specializes in civil design, environmental consulting, water resources, road and infrastructure design, railroad design, and Geographic Information Systems (GIS). With a team of 24 employees, Driven Engineering serves a range of clients, including federal agencies, municipalities, and private sector clients. Their projects often involve complex engineering challenges, such as flood studies, drainage improvements, and site design for residential and commercial developments. The firm prides itself on its commitment to ethical practices and operates under Christian principles, which guide their interactions with clients and stakeholders. Driven Engineering is also recognized as a certified Small Disadvantaged Business (SDB) and a Woman-Owned Small Business (WOSB) in multiple states, enhancing their visibility and opportunities in the competitive engineering consulting market.

13. HCS Engineering Company, Inc

• Website: hcseng.com
• Ownership type: Private
• Headquarters: Decatur, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1992
• Headcount: 11-50
• LinkedIn: hcs-engineering-company

HCS Engineering Company, Inc. is an engineering firm based in Decatur, Alabama, specializing in a range of design and consulting services tailored for industrial clients. Established in 1992, the company has built a strong foundation in mechanical, electrical, and civil engineering, serving sectors such as automotive and chemical manufacturing. HCS Engineering is committed to delivering high-quality, cost-effective solutions that enhance operational efficiency and safety for its clients. The firm has a notable track record, having completed over 5,000 projects for more than 120 clients, which showcases their extensive experience in the industry. Their recent merger with Salas O’Brien, effective March 2024, is expected to further expand their capabilities and resources, allowing them to better serve their clients while maintaining their core values of safety, integrity, and excellence. HCS Engineering's team includes licensed professional engineers and experienced staff, ensuring a high level of expertise in their projects.

14. Thompson Engineering

• Website: thompsonengineering.com
• Ownership type: Private
• Headquarters: Mobile, Alabama, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Founded year: 1953
• Headcount: 201-500
• LinkedIn: thompsonengineering

Thompson Engineering, founded in 1953, is a private engineering firm based in Mobile, Alabama. With a workforce of approximately 383 employees, the company specializes in a wide array of services, including civil, structural, and environmental engineering, alongside construction management and stormwater training. Their clientele spans contractors, developers, and government agencies, reflecting their capability to handle projects that require strict adherence to environmental regulations. The firm is particularly active in infrastructure and community development, providing essential services that support both public and private sector projects. Thompson Engineering has built a reputation for delivering quality solutions across various sectors, including industrial, commercial, transportation, and federal markets. Their training programs, especially in stormwater pollution prevention, highlight their commitment to educating industry professionals on compliance and best practices. This multifaceted approach positions them as a significant player in the engineering consulting field.

15. Proximus Engineering PC

• Website: proximuseng.com
• Ownership type: Private
• Headquarters: Dothan, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2012
• Headcount: 11-50
• LinkedIn: proximus-engineering-pc

Proximus Engineering PC, based in Dothan, Alabama, is an engineering firm that specializes in electrical, mechanical, and structural engineering services. Founded in 2012, the company has built a reputation for delivering quality solutions tailored to the needs of its clients. Proximus Engineering offers a range of services, including industrial piping design, HVAC systems, power distribution, and forensic investigation. They have worked with a variety of clients, from large corporations to smaller enterprises, demonstrating their ability to handle projects of different scales. The firm emphasizes the importance of developing long-term relationships with clients, which is reflected in their approach to project management and execution. Proximus Engineering also boasts capabilities in Computational Fluid Dynamics (CFD) analysis and tank and vessel analysis, further showcasing their technical expertise in the engineering field. Their team is composed of qualified professionals dedicated to achieving client goals and ensuring project success.

16. HGS Engineering, Inc.

• Website: hgsengineeringinc.com
• Ownership type: Private
• Headquarters: Anniston, Alabama, United States (USA)
• Employee distribution: United States (USA) 93%, Finland 7%
• Founded year: 1998
• Headcount: 51-200
• LinkedIn: hgs-engineering-inc

HGS Engineering, Inc. is a consulting firm based in Anniston, Alabama, founded in 1998. The company specializes in engineering and environmental services, providing a comprehensive suite of solutions that includes environmental engineering, health and safety consulting, and IT services. HGS Engineering serves a broad spectrum of clients, including federal, state, and local governments, as well as private sector organizations. Their expertise is particularly focused on helping clients navigate compliance and safety challenges, which are increasingly important in today's regulatory environment. The firm is staffed with professionals trained to address various issues related to air, water, and hazardous waste. HGS also operates a CDC-ELITE certified laboratory, enhancing their capabilities in microbiological analysis. With a workforce of 51-200 employees, HGS Engineering has established itself as a significant player in the engineering consulting field, particularly in environmental and safety compliance audits.

17. Engineering Group of the Southeast

• Website: enggroupse.com
• Ownership type: Private
• Headquarters: Dothan, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: engineering-group-of-the-southeast

Engineering Group of the Southeast, based in Dothan, Alabama, is a private engineering and consulting firm that has been operational since 2006. The company specializes in providing comprehensive project management and engineering services tailored to industrial clients, particularly in heavy industrial sectors. With a team of experienced engineers, EGS supports all stages of industrial project work, including Front End Engineering Development (FEED), detailed engineering design, and construction management. Their services extend to routine and shutdown maintenance planning, safety and chemical process safety, and forensic engineering. EGS has developed a reputation for delivering accurate, timely, and cost-effective solutions, which is crucial in the fast-paced industrial environment. The firm has worked with notable clients such as WestRock and Georgia Pacific, indicating their involvement in significant projects within the industry. Their focus on building long-term relationships with clients further enhances their standing as a reliable consulting partner.

18. Breilmann AG

• Website: breilmann-ag.com
• Ownership type: Private
• Headquarters: Tuscaloosa, Alabama, United States (USA)
• Founded year: 1980
• Headcount: 51-200
• LinkedIn: breilmann-ag

Breilmann AG, also known as SWJ ENGINEERING GmbH, is an engineering services company based in Tuscaloosa, Alabama. Established in 1980, the firm has carved out a niche in providing innovative solutions tailored to the needs of various industries, with a strong emphasis on automotive and aerospace sectors. Their service portfolio includes product development, building technology, logistics planning, and quality management. Breilmann AG is dedicated to delivering sustainable and efficient engineering solutions, catering primarily to businesses seeking to enhance their operational efficiency. The company has built a reputation for its expertise in project management and consulting services, ensuring that clients receive comprehensive support from concept through to implementation. With a workforce of 51-200 employees, Breilmann AG maintains a focus on quality and customer satisfaction, positioning itself as a reliable partner in the engineering consulting field.

19. Project Design Group Inc.

• Website: pdgeng.com
• Ownership type: Private
• Headquarters: Mobile, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2003
• Headcount: 11-50
• LinkedIn: project-design-group-inc.

Project Design Group Inc. (PDG) is an engineering firm based in Mobile, Alabama, specializing in project management and consulting services across various sectors, including pulp and paper, petrochemical, and power. Established in 2003, PDG has built a reputation for delivering efficient, safe, and cost-effective solutions tailored to the needs of industrial manufacturers. The firm prides itself on its strong engineering and project management background, with a team that averages over 25 years of experience in their respective fields. PDG's services range from civil and structural engineering to mechanical, piping, and electrical design, as well as project planning and estimating. Their focus on safety and exceptional customer service has fostered long-term relationships with clients, contributing to their success in the industry.

20. MBA Engineers, Inc.

• Website: mbasei.com
• Ownership type: Private
• Headquarters: Birmingham, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1928
• Headcount: 11-50
• LinkedIn: mba-engineers

MBA Engineers, Inc. is a private engineering firm based in Birmingham, Alabama, specializing in civil and structural design services. Founded in 1928, the company has a long-standing reputation in the industry, having successfully completed more than 12,500 projects. Their clientele includes architects, contractors, private owners, and government entities, showcasing their ability to cater to a wide range of needs. The firm emphasizes comprehensive design solutions, ensuring that projects are executed with a focus on cost efficiency and quality. With a team of experienced professionals, MBA Engineers, Inc. is adept at managing projects from the initial schematic phase through to completion, maintaining high standards throughout. Their commitment to using advanced technology and software in their design processes further solidifies their position in the engineering consulting sector.

21. T.P. Engineering, Inc.

• Website: tpengineeringinc.com
• Ownership type: Private
• Headquarters: Trussville, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2005
• Headcount: 1-10
• LinkedIn: t.p.-engineering-inc.

T.P. Engineering, Inc., based in Trussville, Alabama, is a private engineering firm that specializes in structural engineering services. Founded in 2005, the company has built a reputation for delivering safe and economical designs tailored to the needs of contractors, architects, and developers. With a professional staff boasting over 30 years of experience, T.P. Engineering has managed a wide range of projects, from complex multi-story buildings to simpler structures like equipment support frames. Their services include structural design and detailing for commercial and industrial projects, foundation design for pre-engineered buildings, and connection design for fabricators. Additionally, they conduct evaluations of existing structures and special inspections during construction, showcasing their role as problem solvers in the industry. T.P. Engineering prides itself on fostering strong relationships with clients, ensuring that their engineering solutions align with construction methods and project requirements.

Engineering Consulting Insights: Key Companies in Alabama

Company	Headquarter	Size	Founded	Ownership
Hargrove Engineers & Constructors	Mobile, Alabama, United States (USA)	1001-5000	1995	Private
Goodwyn Mills Cawood (GMC)	Montgomery, Alabama, United States (USA)	501-1000	1947	Private
Volkert, Inc.	Mobile, Alabama, United States (USA)	1001-5000	1925	Private
TTL, Inc.	Tuscaloosa, Alabama, United States (USA)	201-500	1964	Private
Mesa Associates, Inc	Madison, Alabama, United States (USA)	1001-5000	1988	Private
Sain Associates, Inc.	Birmingham, Alabama, United States (USA)	51-200	1972	Private
Three Notch Group	Andalusia, Alabama, United States (USA)	201-500	1946	Private
Optimal GEO	Athens, Alabama, United States (USA)	51-200	2005	Corporate
Gulf States Engineering, Inc.	Mobile, Alabama, United States (USA)	51-200	1998	Private
Poly, Inc.	Dothan, Alabama, United States (USA)	51-200	1959	Private
PSE Designs	Mobile, Alabama, United States (USA)	11-50	2003	Private
Driven Engineering, Inc.(trademarked)	Semmes, Alabama, United States (USA)	11-50	2006	Private
HCS Engineering Company, Inc	Decatur, Alabama, United States (USA)	11-50	1992	Private
Thompson Engineering	Mobile, Alabama, United States (USA)	201-500	1953	Private
Proximus Engineering PC	Dothan, Alabama, United States (USA)	11-50	2012	Private
HGS Engineering, Inc.	Anniston, Alabama, United States (USA)	51-200	1998	Private
Engineering Group of the Southeast	Dothan, Alabama, United States (USA)	11-50	2006	Private
Breilmann AG	Tuscaloosa, Alabama, United States (USA)	51-200	1980	Private
Project Design Group Inc.	Mobile, Alabama, United States (USA)	11-50	2003	Private
MBA Engineers, Inc.	Birmingham, Alabama, United States (USA)	11-50	1928	Private
T.P. Engineering, Inc.	Trussville, Alabama, United States (USA)	1-10	2005	Private

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