Top Architectural & Engineering Services companies

We deliver impactful global solutions to create a more connected, sustainable world — from intelligence to infrastructure, cybersecurity to space exploration. Our 52,000 employees across 50 countries work every day, challenging the expectations of today to reinvent the way we’ll all live tomorrow.

Arup is an independent firm of designers, planners, engineers, architects, consultants and technical specialists, working across every aspect of today’s built environment. Together we help our clients solve their most complex challenges – turning exciting ideas into tangible reality as we strive to find a better way and shape a better world.

AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from planning, design and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy and the environment, our public- and private-sector clients trust us to solve their most complex challenges. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical expertise and innovation, a culture of equity, diversity and inclusion, and a commitment to environmental, social and governance priorities. See how we are delivering sustainable legacies for generations to come at aecom.com and @AECOM.

Mott MacDonald is a global engineering, management, and development consulting firm focused on guiding our clients through many of the planet’s most intricate challenges. Our US operation stretches from New York City to Houston to Los Angeles, with more than 2,300 staff working in more than 60 offices. We play key roles in some of today’s landmark engineering projects, including the LA Metro Regional Connector, Block Island Wind Farm, Parallel Thimble Shoal Tunnel, New York Harbor Water Siphon, and many more. However, it’s not all about the big stuff. We also embed ourselves in communities by working on smaller, more localized projects. Sustainability is at the heart of everything we do. Leaving a legacy that we are proud of matters to us. As an employee-owned company, we take a real interest in creating a diverse and inclusive workplace, putting people before profit. Like what you see? Join us and help build a business for all.

PM Group is an International engineering, architecture, project management and construction services firm. We manage the design, construction and commissioning of high-tech facilities for the world's leading pharmaceutical, food, data centre and med tech companies. We are an employee owned company with network of offices in Europe, Asia and the USA. Founded in 1973 we have a history of excellence in engineering, architecture and project management and today we are one of the world's leading professional services companies serving major multi-national clients across the globe.

Founded in 1964, Kirby is a mechanical and electrical engineering contractor. We operate in Ireland, the UK and Northern Europe, and directly employ over 800 highly-skilled employees. We provide full mechanical and electrical contracting services as well as specialist high voltage (HV) and medium voltage (MV) design and construction services to clients across a number of different sectors including Data Centres, Life Sciences, Industrial Manufacturing, Substations and Renewables, Power Generation, Petrochemical and Commercial.

Bechtel helps our customers deliver projects of purpose that create a lasting positive legacy. These are projects that create jobs and grow economies; improve the resiliency of the world's infrastructure; connect communities to resources and opportunity; get us closer to net zero; tackle critical environmental challenges; protect people and the planet; and accelerate progress to make the world a cleaner, greener, safer place. While expertise enables delivery, partnerships ensure long-term success, which is why we align everything we do to our customers’ goals. Since 1898, we have helped customers complete more than 25,000 projects in 160 countries on all seven continents.