Belgian engineering — family-founded
From DTI
to Thelis
Born in 1989 in Belgium, the company has crossed three decades without ever betraying its DNA: engineering above all. Embedded electronics, industrial systems, artificial intelligence — the domains evolved. The standards did not.
DTI founded — engineering before consulting
DTI is born in Belgium with a clear purpose: technical engineering, not consulting. Embedded electronics, industrial systems, custom controls — every project is a system to build, not a recommendation to write. This culture is in the DNA from day one, and it will never change.
Degree in hand — the next generation arrives
The handoff is not a change of direction — it is an explicit continuity. DTI remains deeply artisanal in its values: every client treated as a unique case, every system designed to last.
Top 5 worldwide on the LONWORKS market
Over a decade, DTI establishes itself as one of five global reference players on the LONWORKS market — industrial automation and smart building protocols. No marketing. Engineering quality alone.
Compact EEG — precision medical hardware
A compact electroencephalograph for field medical constraints. Any application demanding precision in a constrained form factor is engineering territory.
Project Simul — embedded engineering for training systems
Embedded expertise finds new application in simulation. Understand a real system well enough to reproduce it faithfully in a controlled environment.
Thelis ICT & Kiwix — a new dimension
First dedicated ICT division and first proprietary product launch. Press conference, first clients, community in construction — a new expansion phase begins.
Values formalized, community launched
First Kiwix Users' Club — clients become a community. Core values (Conviviality, Respect, Team Spirit) formalized. The team grows. The culture grows with it.
GITEX Dubai — Thelis on the global stage
Kiwix at GITEX Dubai. First MENA presence — a Belgian family-founded company before thousands of tech professionals worldwide. The international stage, not by chance.
R&D in Morocco, economic mission to Rabat
R&D in Morocco in 2015, economic mission to Rabat in 2016. Internationalization becomes permanent. Thelis operates across multiple markets well beyond Belgium.
The big build — a headquarters built like Thelis
Construction of the new headquarters. A structural investment: Thelis builds for the next thirty years. Connected, ecological, designed with the same rigor as the systems delivered to clients.
Inauguration — thirty years of engineering celebrated
Inauguration of the new HQ. ZAP, a client since day one, embodies the continuity. Thirty years after DTI's founding — roots intact, identity strengthened, capabilities broader than ever.
Smart Territory
Operational systems for public territory management. Digital pipeline for ~3,500 nature permit authorizations per year (ProNa), unified waste management platform for 113 recycling centers across 6 intercommunales (GRCP), and mobile observation network across 40 instrumented collection trucks — Smart Region Award 2021 (Sentinel Trucks).
Connected Hardware
Precision connected devices for constrained deployment environments. Cloud-to-device appliance requiring no firewall or VPN configuration (VANDA, 2019), ultra-low-power IoT level gauge with ~1 cm precision and 8-year battery life (LevelStream, 2022), and an integrated hardware ecosystem for residential care homes, co-developed from workshop to production (Kando, 2022–).
Research & Deep Engineering
Multi-year programs within collaborative research consortia. Next-generation dosimetry instruments for particle therapy over 48 months (D-CAF, 2021–2025). Embedded AI compute platform at 10 Gb/s in a 1U rack, zero cloud, total sovereignty — ReconnAIssance consortium, Walloon Region (Zharis, 2026).
Thelis — today
Engineering
from idea
to reality.
Thirty-seven years after DTI, Thelis is an independent Belgian engineering company that designs and deploys operational technological systems — software, embedded firmware, hardware, artificial intelligence. No consulting, no decoration: systems that run, products that exist.