Specialised trenchless engineers
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A strategic choice
OPTIMUM is an engineering consultancy specialising in the installation of trenchless networks for energy, utility and telecommunications transport and distribution projects.
Created to bring new skills and expertise to industry stakeholders — project owners, works contractors, or design offices — OPTIMUM adds value to every stage of a trenchless project. The relevance, impartiality, and technicality of the solutions we propose, along with the punctuality of deliverables, are at the heart of our commitment to customers.

“We are committed to supporting our customers by providing them with solid jobsite experience, coupled with advanced calculation and modelling capabilities. We have built OPTIMUM with a diverse team of engineers, including geotechnical engineers, geologists as well as construction engineers, to give the best possible support to our customers at every stage of their trenchless project.”
Alexandre Cambier
Managing Director
Perfect understanding of all trenchless techniques
Unparalleled experience on trenchless jobsites
Insight into every client's specific needs
Responsive team, deployable worldwide
Most innovative methodology on the market
Recognised trenchless experts

Launched in 2018 by François Gandard and Alexandre Cambier, OPTIMUM shook up the French trenchless market by successfully applying a process rarely used in the industry. The energy and utility sectors quickly embraced these early projects, fuelling rapid growth and fostering increased collaboration on major new ventures.
In 2023, OPTIMUM continued its expansion with the opening of an office in Toulouse, strengthening its presence in southwestern France. Led by Guillaume Bezombes, the OPTIMUM South West team brings valuable expertise, particularly in navigating the region’s unique and complex geological challenges.
Today, the company is a recognised industry leader, its expertise being in high demand both in France and abroad. OPTIMUM is also an active and valued member of key European trade groups, such as the DCA (Drilling Contractors Association), the FSTT (France Sans Tranchée Technologies) and the USG (Union Syndicale Géotechnique).
An industry reference
OPTIMUM has been supporting the trenchless industry, both in France and internationally. for nearly 10 years.
Whatever the installation technique being used or the crossing dimensions, our specialist team of engineers deliver innovative, effective and tailor-made solutions for every trenchless project.

1 000 projets crossing projets

250 000 mètres crossings analysed

195 km HDD

40 km microtunnel

50 km landfall

190 traversées SNCF railway crossings
Recruitment
OPTIMUM leverages the experience of multidisciplinary engineering teams to deliver solutions for clients, no matter where they are. Working with us, you will be able to engage in exciting projects and contribute to energy transition initiatives across Europe and beyond.
Project diversity: Work on a wide variety of projects, across various regions and countries, applying an innovative approach to deliver impactful results.
Career growth: Every trenchless project presents technical challenges. At OPTIMUM, you will have the opportunity to enhance your skills, learn something new every day and advance your career in a dynamic, international environment.
Supportive culture: Join a team of passionate professionals who thrive on creativity and collective problem-solving. Your input will be valued, and your achievements recognised.
Benefits: Enjoy flexible working arrangements and a comprehensive benefits package.
With offices near Paris and Toulouse, and soon in other regions in France and Europe, OPTIMUM is looking for talented individuals to accompany the company’s strong growth.
Submit an unsolicited application: recruitment@optimum-te.com

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