Icône de topographie réalisée par Topo Services

TOPO Services + Arcad Ingénierie

About us

TOPO Services and ARCAD Ingénierie work in synergy while keeping their independance and own identities. You will find below some additionnal information about our two companies. Contact us for any additional information or inquiry.

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Ravine Fontaine Bridge - Reunion Island - Hervé Douris

Topo Services

The company

Topo Services is a local surveying firm based in Reunion Island. Based in St Pierre and founded in 2003, the company is well-known throughout Reunion Island and across the Indian Ocean for its many years of experience and know-how : it provides its expertise in numerous fields such as topographical and architectural surveys, photogrammetry, aerial mapping, construction monitoring, structures inspection, topographical expertise, georeferencing and network detection.

The team

TOPO Services team is implicated, dynamic, close-knit and dedicated to our clients satisfaction, conducting their topographical surveys with great rigor and precision.

Photo de l'équipe de Topo Services, entreprise de topographie sur la Réunion

From the top-left to the bottom-right :

  • Kévin

    Technical manager

  • Karina

    Executive assistant

  • Alia


  • Teddy

    Field technician

  • Émilien

    Topographic survey team manager

  • Frédéric

    Topographic survey team manager

  • Julien

    Topographic survey team manager

  • Simon

    Surveyor and topographer apprentice


Alia Griffon-Monnet

As surveyor and engineer from INSA Strasbourg, I started my career monitoring several major projects such as the Millau Viaduct during internships and previous employment. I also collaborated with a team for the implementation of precision polygonal in Guinea for several months and assisted an expert surveyor in Guadeloupe for my final year study project based on ‘Geodesy applied to major linear infrastructure projects abroad’).

Then, I joined TOPO Services in february 2014 and worked exclusively in the field. Once I acquired knowledge of the field work, I was promoted to assistant manager, implying technical, commercial and financial responsabilities. In 2016, I became co-manager of the company, and in January 2018, I had the opportunity to acquire TOPO SERVICES.

Arcad Ingénierie

The company

ARCAD Ingénierie is a consulting company specialized in 3d scanning and analysis. Based in Reunion Island, we provide our services all across the Indian Ocean.

Founded in 2012, the company provided at first its 3D scanning services mostly to companies working in architecture, structure building, archeology, preservation of cultural and natural heritage and consulting offices, by the use of 3D laser scanners.

Since 2017, our company is now equiped with a complete LiDAR system with dynamic acquisition for large areas such as gullies, cliffs and dangerous or inaccessible areas. With this technology we can extract vegetation from the natural terrain and classify buildings or ground for creating a digital elevation model.


Sébastien Toumit

As a graduate and professional surveyor since 1998, I started to work as an employee for multiple surveyor’s offices before founding TOPO Sevices in 2003. In 2010, I became passionate about 3D digitization and even now I am still impressed about the results that can be achieved with these technologies. This new passion gave life to Arcad Ingénierie in 2012.

Photo de Sébastien Toumit, gérant de l'entreprise Arcad Ingénierie sur la Réunion

After a few years managing both companies, I decided to focus entirely on 3D digitization. Therefore, since January 2018, Alia GRIFFON—MONNET became the sole owner of TOPO Services, which she fully managed with great professionalism.

Its survey team

Fabrice Duret

Public works, static and dynamic 3D scanning specialist

Photo de Fabrice Duret, géomètre-topographe de l'entreprise Arcad Ingénierie sur la Réunion

Olivier Rivière

Survey technician and topographer specialized in 3d scanning

Photo d'Oliver Rivière, géomètre-topographe de l'entreprise Arcad Ingénierie sur la Réunion

Contact us

+262 2 62 59 92 28

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