Find engineering consulting firms by capability and location.

2IM Group, LLC is a Chicago-based civil, environmental, and transportation engineering practice. Now part of MacKay, it continues to deliver technical solutions across highways, roads, streets, aviation, rail, transit, utilities, and stormwater management systems while offering expanded resources and broader geographic reach.

Best Engineering Solutions to Build Your Dreams

Providing Engineering Solutions for Sustainable Infrastructure

The people you know... The results you expect... The team you trust!

ADC's Track Record Speaks for Itself

Specialized electrical engineering for aviation, transportation, and facilities projects

Providing responsive, innovative solutions in aviation, engineering, logistics, and program management services.

When Safety Is Critical.

Aviation architecture, engineering, and prefabricated air traffic control cab fabrication.

An Aerodynamics Legacy Since 1971

Full-service aviation and aerospace engineering house specializing in modifications and 24/7 AOG support

ATCSI LLC delivers specialized services and technical solutions in air traffic control systems integration, shipboard systems, manned and unmanned air systems, and air traffic control procedures and policy development. It provides program management, task-based curriculum development, technical training, information analysis, digital data services, systems engineering, and strategic project planning. With a workforce of subject matter experts, the team supports complex aerospace, defense, and maritime programs.

Transforming Today's Ideas Into Tomorrow's Reality

We empower our people to do good and help others with simple solutions.

Rapid Response. Proven Expertise. Global Reach.

Adacel Systems, Inc. supports aviation and defense customers from Orlando with air traffic management, digital tower, simulation, and training technology. Adacel combines REVAL digital ATC tower consulting, system design, development, deployment, and support; Aurora air traffic management system engineering, software development, test, and verification; MaxSim air traffic control simulation; and ICE aviation phraseology training tools.

Advanced Sciences and Technologies delivers systems engineering, test and evaluation, software development, and systems integration services for mission-critical defense, aviation, aerospace, and naval programs. The practice supports major federal agencies including the FAA, Department of Defense, and Department of Homeland Security, providing advanced combat systems development, air traffic management support, and complex software integration.

Landing reliable solutions, together

Precision aerospace engineering, FAA certification, and inflight connectivity solutions.

Revolutionizing the aerospace industry through applied research and data analytics

Strength in design. Safety in flight.

Aircraft Modification, Certification & Engineering Services

Expert engineering consulting and investigation services for aircraft accident investigation and reconstruction.

Moving at the Speed of Business