Infrastructure
Roads, airfield pavements, utilities, geotechnics and civil structures.
About TOPDEC
Engineering that connects disciplines.
TOPDEC supports infrastructure, building, energy and mapping projects with a multidisciplinary perspective: understanding the site, coordinating interfaces and producing buildable solutions.
Who we are
A Franco-Tunisian multidisciplinary engineering consultancy
TOPDEC Engineering is a Franco-Tunisian consultancy based at Les Berges du Lac in Tunis. Its four complementary divisions support projects in France and across Africa, from surveys and diagnosis through detailed design and construction assistance.
This dual French-Tunisian culture combines the technical requirements of projects delivered in France with practical knowledge of African contexts and regional challenges.
Our goal is straightforward: turn complex technical constraints into clear, coordinated and directly usable deliverables.
Four complementary perspectives
One standard, four areas of expertise
Each division retains its specialism while drawing on the capabilities of the wider team.
Buildings
Architecture, 2D/3D surveys, reinforced concrete and steel structures.
Energy
Audits, energy performance, efficient systems and professional training.
Mapping & networks
Surveying, GIS, georeferencing, network detection and FTTH studies.
Our mission
Bringing consistency to complex projects
We coordinate data, constraints and disciplines to secure technical decisions and smooth the path from design to construction.
- Understand the requirement and its context
- Validate assumptions through surveys and diagnosis
- Coordinate interfaces between disciplines
- Produce clear, quality-controlled documents
How we work
Rigour, listening and review
Every assignment is built around a clear scope, regular dialogue and a quality review appropriate to the required level of detail.
- A response tailored to each project stage
- Deliverables designed for decisions and construction
- Close cooperation with project stakeholders
- A continuous focus on practical solutions
Track record
Proven delivery capacity
2500+utility coordination drawings
2000+energy audits
100+buildings
10+international airports
Let us shape the right response for your project.
Tell us about the context, constraints and level of design you need.