Case study

One shop, one workshop, one office - one system

Next Concept SAS makes furniture, lighting and fire bowls from steel, every piece one of a kind. We built a three-language website with a shop, and behind it the office that carries an order from the first sketch to the paid invoice.

vincent-hellmann.com ↗

Where it started

A young business on the French-German border, founded in 2024, with no employees: the owner designs, welds and ships everything himself. He sells to end customers in three language markets. The old website could show pictures, nothing more - enquiries, quotes, orders and invoices lived in emails, spreadsheets and his head. Exactly where a one-person business loses its time.

One order, from sketch to customer review

The system is easiest to understand through a single piece - say, a made-to-measure fire bowl:

  1. 1 The enquiry arrives through the custom-order form, with a sketch and a photo. Both are attached to the enquiry; one click turns it into a customer and a quote, no retyping.
  2. 2 The customer accepts the quote - with a down payment and the agreed discount, which travel all the way to the final invoice.
  3. 3 The production order arrives with its bill of materials, work steps and a finish-by date.
  4. 4 Laser cutting and galvanising are done by a subcontractor: one button on the work step drafts the request, CAD files included. When the quote comes back by email, the mailbox attaches it to the right order by itself.
  5. 5 In the workshop, a QR job tag travels with the part. Scanning it moves the order on; the office sees "2 of 6 · now: CNC".
  6. 6 Shipping: the tracking number is entered once and shows on both the order and the shop order.
  7. 7 The invoice is generated from the order as an e-invoice (Factur-X) - the down payment already deducted.
  8. 8 Five days later the system asks for a customer review, in the customer’s language. Nothing is published before approval.

The number that changed everything

An order with a lot of bought-in work looked good in the post-calculation: a 30 % margin. Once laser parts, galvanising and coating were counted in, the same test case told the truth: minus 18 %. Since then, the stopwatch, the bill of materials, subcontracted work and stock movements all meet on the order - and each product carries a price suggestion built from exactly those numbers. When you work alone, you cannot afford a loss-making order twice.

The office reminds you

A one-person business has no back-office staff. So the system speaks up - once a day, only between 8 am and 8 pm, on the phone:

  • Enquiries unanswered for two days, and quotes nobody has responded to.
  • Overdue orders, and finished orders that have not been invoiced yet.
  • Suppliers who have missed the date they promised.
  • Open items in three dunning stages, and supplier invoices coming due.

What else is included

Shop
Variants, RAL colours, collection, discount campaigns, downloadable plans. Payment by PayPal, card or direct debit - without the email confirmation code that used to be the biggest obstacle at checkout.
Receipts
AI reads supplier invoices from the mailbox or a phone photo, including the payment terms. An embedded e-invoice is taken over directly.
For the accountant
A monthly package at the press of a button: booking list, receipt scans, outgoing invoices. Plus a change history and procedure documentation, as an audit requires.
Visibility
News posts go out to Facebook and Instagram automatically, products to Google Shopping and Pinterest. Visitors are counted without a cookie banner.
In the workshop
The office is an app on the phone, with push notifications and Face ID sign-in. Entries made without a connection are not lost.

What made it special

Three languages down to the last email
Website, shop, customer emails, the review request - all in German, French and English. Anything maintained in German visibly lacks its French version until it is added, rather than quietly going stale.
E-invoicing ahead of the mandate
France has required businesses to receive e-invoices since September 2026. Here every outgoing invoice already is a PDF with embedded XML to EN 16931 - even in the edge case of a German service provider, a French company and customers in both countries.
AI on a short leash
An assistant maintains products, news, campaigns and stock. Anything involving money or legal obligations - quotes, invoices, reminders - is only ever created as a draft. Sending is done by hand.
It keeps growing
More than 140 improvements were added in the first six weeks, each explained in the office in one plain sentence. The system was not handed over finished - it works alongside the business.

Limits

This is not a system for series production and not a point-of-sale solution. It does not model resellers, batches or shelf life. A business producing in quantity needs something else - that is a decision, not a gap.

The office overview in light mode: income, expenses, difference and inventory value as four tiles, below them a to-do list with an overdue invoice, missing receipts and items below minimum stock.
Four numbers tell you how the year is going - and below them, what needs attention.
The same overview in dark mode.
The same page in dark mode. The office follows the device setting - on a tablet in the workshop that is not a gimmick.
The job-tag view: eight tags, five linked to orders and "on the move", three free on the board.
Job tags: which one belongs to which order, which one is free.
A print sheet of QR tags, four per page, each with an ID and the company name.
The print sheet: a page of tags, tear one off and attach it to the part.
List of production orders with number, customer, due date and status.
What is in the workshop: three orders, two of them in production.

Screenshots from a separate copy of the system with invented data.

Questions

How long does a system like this take?
It depends on scope. The path is always the same: a conversation, a questionnaire, a fixed-price quote, then the build. You know the cost after the second step.
Can I start with one part?
Yes, and usually that is the better way. Website and shop first, the office behind it once the first orders come in - the building blocks are the same, they just arrive later.
Do I have to use the AI?
No. It saves typing, for example when reading receipts. Without it everything keeps working - just with more manual work.

Checked 2026-09-28

Would this fit your business?

A conversation costs nothing and usually settles it in twenty minutes.

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