Tunnelbuilder Competitors

We are an engineering, management and development consultancy and one of the largest wholly employee-owned firms of our kind. We plan, design, deliver and maintain the transport, energy, water, defence and security, and buildings infrastructure that is integral to people's daily lives. Our core strength is using our expertise to overcome complex challenges to deliver benefits for our clients and the communities they serve.

Sika is a specialty chemicals company with a globally leading position in the development and production of systems and products for bonding, sealing, damping, reinforcing, and protection in the building sector and industry. Sika has subsidiaries in 103 countries around the world, produces in over 400 factories, and develops innovative technologies for customers worldwide. In doing so, it plays a crucial role in enabling the transformation of the construction and transportation industries toward greater environmental compatibility. In 2025, Sika’s 33,700 employees generated annual sales of CHF 11.20 billion. On Sika's LinkedIn page we share our most important corporate news and job openings, as well as a broad mix of content from our Sika subsidiaries around the world. Your Career at Sika: https://www.sika.com/en/career.html Privacy Notice: https://www.sika.com/en/footer/privacy-notice.html

VINCI is a world leader in concessions, energy and construction, employing 280.000 people in more than 120 countries. We design, finance, build and operate infrastructure and facilities that help improve daily life and mobility for all. Because we believe in all-round performance, above and beyond economic results, we are committed to operating in an environmentally and socially responsible manner. You can be part of projects that bring lasting change to urban ecosystems and entire regions. Join the team!