Expert Custom Software Development Services in Paris

Cost depends on scope rather than location. A focused launch project is priced very differently from a multi-module platform with integrations. What we do commit to in Paris is an itemised quote in EUR (€) before work starts, with change requests priced separately so the number you approve is the number you pay. Send us your requirements and you will have a written breakdown within two working days.

Yes. Every project runs on a written agreement covering scope, milestones, payment schedule, ownership of the work and confidentiality. Nothing important is left to a verbal understanding or a chat message.

We have delivered projects for Luxury & Fashion, Banking and Aerospace businesses among others, which reflects the commercial mix here. Paris concentrates luxury and fashion houses, banking, aerospace, a substantial startup ecosystem and one of Europe's largest tourism economies.

Usually not the visible design - it is what sits behind it. Cheaper work typically skips cross-device testing, performance budgets, security updates, structured content and post-launch support. Those omissions are invisible on day one and expensive in month six.

Yes. We regularly take a defined workstream alongside an internal team - a module, a redesign or the search and performance work. Boundaries and code review conventions are agreed up front so nobody is working over the top of anyone else.

Usually within one to two weeks, depending on current commitments. We would rather give you an honest start date than book you in immediately and then run a project slowly, which is the more common outcome when a supplier promises to start the same day.

Yes - accounting, CRM, payment gateways, logistics and messaging platforms are all common. We check API availability during discovery, because an integration that looked simple in a sales meeting occasionally turns out to have no public API at all.

Role-based access control, encrypted credentials, audit logging, input validation and scheduled backups are part of the baseline build. For regulated sectors we scope the specific compliance requirements during discovery rather than assuming a generic standard.

That is the point of building custom. We design the data model and module boundaries for where you expect to be in three years, so adding users, locations or modules is configuration work rather than a rewrite.

Demand tracks the local economy closely. Paris concentrates luxury and fashion houses, banking, aerospace, a substantial startup ecosystem and one of Europe's largest tourism economies. Those are the sectors we field the most enquiries from here.

French-language content across the entire funnel is expected, and translated-looking copy is penalised commercially. That is not a guess we make at proposal stage - it comes from delivering work in this market and watching what converts.

Three practical things: an in-house team rather than a subcontractor chain, written scope and pricing before work begins, and full handover of code and accounts at launch. Luxury and tourism keywords are heavily contested; B2B is more accessible.

For clients in France we work with Stripe, PayPal, Cartes Bancaires and SEPA Direct Debit. The right choice depends on your average order value, refund pattern and settlement timing rather than brand familiarity - at low volume Stripe is usually the practical default, and we will say plainly when a cheaper provider would cost you more in reconciliation time. Card details always go straight to the gateway, so your system stores a token rather than a card number.

If you collect a name, an email or a payment from someone in France, the GDPR, supervised here by the CNIL applies. In practice that means recorded consent rather than assumed consent, a stated retention period for each type of data, a working route for access and deletion requests, and a privacy notice that describes what actually happens. Locally it also means accounting for CNIL cookie-consent guidance, which is stricter than the EU baseline. We build and document to that standard; a formal compliance opinion should come from a qualified adviser in France.

A first working module is typically 8 to 12 weeks; a full internal platform with roles and reporting runs 6 to 9 months. What moves those dates is rarely the engineering - it is how quickly content arrives, how many people must approve a decision, and whether a third-party system turns out to be documented. We commit to a date at the end of discovery, when it means something, rather than on the first call.

Yes - accounting (Tally, Zoho Books, QuickBooks or Xero), identity through Google Workspace or Microsoft Entra, storage and compute on AWS or Azure, and messaging through Twilio or the WhatsApp Business API. Every connection is documented with its credentials, rate limits and failure behaviour, and the accounts are registered in your name so nothing goes dark if you change supplier.

We build to WCAG 2.2 AA: semantic headings, form controls with real labels, keyboard-operable navigation, a visible focus state, sufficient colour contrast, and no meaning carried by colour alone. It widens the audience you can sell to in Paris, it is increasingly what procurement asks about, and it overlaps almost entirely with what search engines reward anyway.