Legal notice and privacy

On the production site only, the PostHog library records page views (the page address, query string included, for instance the text of a search in the resources), page leaves, the clicks and interactions it captures automatically, click and scroll positions for heatmaps, page performance measurements (Web Vitals) and JavaScript errors. On top of that come the events we named ourselves: clicks on our booking, contact and navigation buttons, opening the mobile menu, a search in the resources (query length and word count only), expanding or copying a skill prompt, games of the homepage mini-game, with their score and, when a record falls, the previous record.

PostHog adds technical details: browser, operating system, screen size, referring page, campaign parameters (utm_*) and ad click identifiers found in the address (gclid, fbclid, msclkid, li_fat_id, ttclid…).

The data goes through /ingest, a relay on our own domain, then on to PostHog, in its United States region. Measurement is cookieless: PostHog stores nothing in your browser, no cookie, no localStorage, no sessionStorage. Each visit is measured without a persistent identifier: PostHog draws a random identifier that lives in memory only, for as long as you browse the site in that tab, and is gone as soon as you reload or close the page. From one visit to the next, the same person is not recognized. The PostHog project setting that anonymizes IP addresses isn’t turned on, so the IP address sent with events isn’t masked by that setting, and by default PostHog derives an approximate location from it (country, region, city, approximate coordinates, time zone) and adds it to the events. The site never calls PostHog’s identify function and creates no person profile. Your visits aren’t tied to your name or email.

Session recording (replay) is turned off in the PostHog project, and surveys are not enabled.

The booking buttons are plain links to cal.com. The site embeds no cal.com widget and loads nothing from cal.com until you click. The click itself is counted in PostHog.

On cal.com, you enter your name, your email and the details of the meeting. Cal.com processes them under its own privacy policy, and we receive them to prepare the call.

When a meeting is booked, cal.com notifies our server. We then record a single PostHog event, “booking_completed”, with the booking identifier (failing that, a salted hash of the email, never the email itself), the start time, the duration and any campaign parameters. Your name, your email and the content of the booking are not sent to PostHog.

If you write to us, we receive your email address, your name if it appears and the content of your message. They are used to answer you and keep track of the conversation.

The site is hosted by Vercel. Like any host, Vercel processes the technical data of each request (IP address, browser, requested page, date and time) to serve pages and protect the service. Traffic to the site is encrypted over HTTPS. Pages are served from Vercel’s network, close to the visitor. The site’s server functions, such as receiving cal.com notifications, run in Washington, D.C., United States (region iad1).

When you open an address that doesn’t specify a language, such as /contact, the site reads the country Vercel derives from your IP address to choose between French and English. The site does not store that country.

Vercel Web Analytics and Speed Insights are not installed. Fonts are served from our own domain: no request goes to Google Fonts.