France · France
Custom PHP and MySQL application development in Lille
When an off-the-shelf plugin does not fit the business, I build the thing that does — booking systems, client portals, quote calculators, admin dashboards, and integrations with whatever API you already depend on. For Lille businesses, quoted in EUR from $200, typically live in 10 days.
What custom php and mysql application development includes for a Lille business
Fixed scope, agreed in writing before development starts. From $200, typically live in 10 days.
- Database design and schema, documented rather than improvised
- Application build in PHP with a MySQL backend
- Admin interface built for the people who will use it daily
- Role-based access control where more than one person logs in
- Third-party REST API integrations
- Transactional email via PHPMailer with proper SPF/DKIM alignment
- Input validation, prepared statements and CSRF protection throughout
- Written handover documentation — you are not dependent on me to keep it running
The terms for a French client
| Starting price | From $200, quoted and invoiced in EUR |
|---|---|
| Typical timeline | 10 days once content is supplied |
| Tax position | VAT at 20%, reverse-charged |
| Data protection | the EU GDPR, enforced by the CNIL — resolved by a DPA with EU Standard Contractual Clauses |
| Payment rails available | Cartes Bancaires, Stripe, Lydia, and PayPal |
| My day in Lille time | 06:00–15:00 — about 6 hours of overlap |
Why this matters for France specifically
The CNIL enforces cookie rules more aggressively than most EU regulators, and "refuse all" must be as easy as "accept all". A French site running a standard one-button banner is carrying a known, fineable defect.
Why the Lille quote lists exclusions as well as inclusions
Every quote I send names what is not included as explicitly as what is. Copywriting from scratch, photography, logo design, ongoing content, paid advertising and third-party licence fees are the usual ones. A quote listing only inclusions is not cheaper — it is the same price with the arguments deferred to later.
This is unpopular at the proposal stage and it is the reason fixed prices hold. Someone comparing three quotes for a Lille project is usually comparing three different scopes without realising it, and the cheapest one is very often the one that excluded the most while saying the least.
Professional services in Lille
Accountants, solicitors, consultants and agencies sell judgement, which cannot be photographed. What converts instead is specificity: the sectors you actually work in, the size of client you actually serve, and named people with real biographies. A professional services site full of stock imagery and the word "bespoke" is indistinguishable from every competitor in Lille.
Practically, the site's job is qualification rather than lead volume. Publishing your minimum engagement size loses you enquiries and saves you hours, and almost every practice I have built for concluded afterwards that it should have done it sooner.
Analytics that has never once been looked at
Most sites carry a tracking tag and no measurement. Nobody defined what counts as a conversion, so the dashboard reports sessions and bounce rate — numbers that move up and down and change no decision anybody makes.
Useful measurement is narrow: form submissions, phone taps, WhatsApp clicks, and which pages preceded them. Four numbers checked monthly beat forty never opened, and knowing which Lille search terms actually produce enquiries is what turns the site from a cost into something you can steer.
What I am not claiming about Lille
- I have no office, postal address or phone number in Lille
- I cannot meet you in person, and if that is a requirement you should hire locally
- I am not claiming existing clients in Lille specifically — my live work is listed on the work page and you can check it
- Nothing on this page is a guarantee of search rankings, which no developer can honestly offer
Custom PHP and MySQL application development in Lille — common questions
- Will the site actually rank in Lille search results?
- The build handles what is technically controllable: crawlable HTML, correct headings, structured data, fast pages, a clean sitemap and Search Console set up on day one. Ranking also depends on your competitors, your domain's age and the links pointing at you, which no developer controls. Anyone guaranteeing a position is guessing or lying.
- Do you provide ongoing maintenance after launch?
- Thirty days of snag fixes are included after launch at no extra cost — anything that does not work as specified gets fixed. Beyond that there are monthly plans for updates, backups, monitoring and small changes. They are optional and cancellable; a site handed over properly does not require a retainer to keep running.
- Can you fix my existing site rather than rebuild it?
- Often, yes, and it is usually the cheaper answer. Speed problems, a broken mobile layout, a form that silently fails or missing structured data are all fixable on the site you already have. I will tell you which of the two you need after looking, and a rebuild only gets recommended when the fix would cost more than starting again.
- What hours will you be available to us in Lille?
- My working day lands at 06:00–15:00 in your time, which is roughly 6 hours inside a normal Lille working day. In practice you can raise something in the morning and have it answered the same morning, and a scheduled call is easy to place at a civilised hour for both of us.
- How long does a Lille project actually take?
- Three days for a business site, seven for a store, ten for a custom application. That holds because the process is fixed rather than improvised and because your content exists on day one. What stretches a build is almost never the code — it is waiting for copy, logos and photographs, so those are requested before the clock starts.
- What payment methods can my Lille checkout accept?
- For France: Cartes Bancaires, Stripe, Lydia, and PayPal. The right combination depends on your average basket and your customers, and picking wrong is expensive — the payment method a buyer expects but cannot find is one of the most common reasons a checkout is abandoned at the final step.
- How do you handle our customers' data under EU GDPR?
- Your customer data is governed by the EU GDPR, enforced by the CNIL, and sending it to a developer in Pakistan is a restricted transfer. That is resolved by a DPA with EU Standard Contractual Clauses, published on this site and pre-signed before you send an enquiry — not drafted after you ask about it.
Related pages
Other services in Lille
Custom PHP and MySQL application development in nearby France towns
- Custom PHP and MySQL application development Nantes
- Custom PHP and MySQL application development Grenoble
The full service detail — process, deliverables, what is excluded and the FAQ — is on the main custom php and mysql application development page. Everything I build for Lille is on the Lille page, and every town in France is on the France coverage page.
Custom PHP and MySQL application development in Lille — get a fixed quote
Send the brief and you get a reply within one business day, priced in EUR from $200. If custom php and mysql application development is not what your project actually needs, I will say so.
- Response
- Replies within 1 business day
- Hours
- Mon–Fri, 09:00–18:00 PKT — overlaps 05:00–14:00 UK, 00:00–09:00 US Eastern
- Booking
- Booking projects from October 2026