Premium site + appointment booking / MEP engineering firm, French Guiana
DSE Yana
The website of a technical engineering firm in French Guiana — MEP execution drawings, self-service appointment booking and an admin back-office. Real client, in production on its own domain.
DSE — Dessin & Suivi Économique is a technical engineering firm based in Matoury, French Guiana. The old site did not do the work justice. New identity derived from the logo, content rewritten to be understood by a homeowner as much as a company, sections for the 4 MEP trades, a real deliverable (an anonymised execution drawing) and construction cost tracking. Visitors can book an appointment on their own, with no email back-and-forth, with confirmation, a calendar file and an automatic reminder the day before.
The website of a technical engineering firm in French Guiana — MEP execution drawings, self-service appointment booking and an admin back-office. Real client, in production on its own domain.
Modules
Custom Next.js site for a French Guiana MEP engineering firm: the 4 trades (electrical, plumbing, solar hot water, HVAC), online booking on Guiana time and a back-office.
Result
Live on its own domain, self-service appointment booking operational and an admin back-office delivered.
Next.js / TypeScript
≈ 2 weeks
Live site structure
What the live website actually shows today.
Business contacts
Clear entry points depending on the request.
4
MEP trades
Self-service
Booking
Own domain
Go-live
Challenge
The real need behind the project.
Lift the image of an engineering firm with no marketing team, make a technical trade accessible to the general public, and turn inbound requests into qualified appointments without endless email back-and-forth.
Solution
Next.js App Router, identity and palette derived from the logo, plain-language content, an in-house booking module (slots on America/Cayenne time, confirmation + calendar file, one-click cancellation, automatic day-before reminder via scheduled task), an admin area (requests, appointments) and a study form wired to the database. Supabase database, Resend emails, Vercel deployment.
Delivered outcome
What this version concretely improves.
- A cleaner and more serious visual direction to support the label image.
- A more direct reading of artists, releases, and video content.
- Business contact points separated by real need.
- A simple base that can evolve without rebuilding from scratch.
Visual output
Delivered visuals supporting the project.

Next step
Need this level of result for your own website?
KAH Digital can scope, design, and deliver a clean base for a label, a brand, or a project that needs to present its universe, content, and contact points in a stronger way.