Shop, back office & systems for a new business · 2025–2026
ARWENN
ARWENN opened in Berlin in October 2026 as a new business: contemporary furniture, lighting and accessories, cash & carry. There was no shop, no point of sale and no back office before, so we built the technical infrastructure from the ground up, a year ahead of the opening, to carry it. The storefront, designed by the studio Wiegand von Hartmann and implemented together with Konstantin Haubrok, is a Hydrogen application on Shopify. Behind it sits a back office of our own that connects every system the business runs on: Shopify, the Locafox point of sale and the books, with B2B, supplier orders and stock keeping, invoicing, DATEV preparation, back-in-stock alerts and sales statistics in one place.
- Client
- ARWENN GmbH, Berlin
- Our role
- The technical infrastructure from the ground up: storefront with Konstantin Haubrok, back office and integrations entirely by us
- Year
- 2025–2026
- Live
- arwenn.com ↗
How it was realised
The project came to us through Laura Vielmetter-Diekmann, who had worked with ARWENN co-founder Sebastian Schönheit before. ARWENN wanted a shop that looks like the showroom. Wiegand von Hartmann's design, full-bleed and quiet, is carried through pixel by pixel on a storefront we built with Konstantin Haubrok on Shopify, so the team keeps a standard checkout, payments and product admin while the customer sees something of its own. Collections, variants and the cash-and-carry logic follow a showroom that sells what is standing on the floor; a customer who wants a sold piece asks to be told when it is back and hears from the shop itself.
Behind it we built a back office of our own, with the whole business in one place: products and stock mirrored into the Locafox point of sale so the till and the shop never disagree, sales from both landing in one ledger with numbered, locked documents, invoices and credit notes as PDF and e-invoice, and an export the accountant imports without re-typing. Sales statistics show what sells where, online and in the store.
What sets the back office apart is that it runs the whole trade, not just the shop: B2B customers with their own orders and conditions, supplier orders with restock levels per warehouse, and stock keeping across locations. Back-in-stock alerts, customer reviews with opt-out, withdrawals and backups each have their own screen; sign-in is with passkeys. Shop and back office were built as one system from the first day, which is why a new business with a two-person team can run on them.
What it solved
- A whole business infrastructure before the first sale: shop, till, mail, bookkeeping and the connections between them, built from nothing in one go.
- A bespoke front end on a standard commerce backend, without giving up checkout, payments or the admin the team already knows.
- Two systems of record, shop and point of sale, reconciled into one without anybody re-typing an order.
- German bookkeeping rules inside a shop back office: locked documents, e-invoices, DATEV preparation.
- A sync that is safe to run again: nothing is ever deleted, only archived, and a repeat changes nothing.
Design
Up close.
Screens
In use.
