This document is published in English only. The English text is the binding version.
Last updated: 27 October 2026
This Privacy Policy explains how CTO Teachings ("CTO Teachings", "we", "us", or "our") collects, uses, shares, and protects personal information when you visit our website, contact us, subscribe to our updates, or engage our services. It also describes the choices and rights you have over your information. By using this website or sharing your details with us, you agree to the practices described here.
Using our LangLearn app? This policy covers this website and our consulting business. The LangLearn language-learning app and language.ctoteachings.com are covered by a separate, app-specific policy: LangLearn App Privacy Policy, and its use by the LangLearn Terms of Use.
Using one of our other apps? Each is covered by a separate, app-specific policy and terms:
CTO Teachings helps companies scale with senior AI engineers — through staff augmentation, end-to-end delivery, and permanent placement. For the purposes of applicable data-protection laws, CTO Teachings is the controller responsible for the personal information handled through this website. If you have any questions about this policy, you can reach us through our contact page.
Information you provide to us. When you fill in a form, request a consultation, subscribe to our newsletter, or otherwise contact us, we collect the details you choose to share — typically your name, company or organisation, email address, phone number, and the contents of your message. If you are exploring an engagement with us, this may also include information about your project, hiring needs, or technical requirements.
Information we collect automatically. Like most websites, we and our service providers automatically collect certain technical information when you browse, such as your IP address, browser type and settings, device and operating system, referring pages, and how you interact with our pages. This is gathered through cookies and similar technologies (see below) and helps us keep the site secure, reliable, and easy to use.
We use a small number of cookies and comparable technologies. Strictly necessary cookies keep the site functioning and secure and cannot be switched off. Analytics and ad-measurement cookies are set only after you click OK on our notice, as described in the next section. You can control or delete cookies through your browser settings; disabling some cookies may affect how parts of the site work.
This website, our blog and our product websites use Google Analytics 4, provided by Google, to understand in aggregate how visitors find and use them: which pages are viewed, which links to our products are followed, and whether key steps such as signing up, finishing setup or sending an enquiry succeed. We never send Google your name, email address or account ID. Google Analytics runs in Google’s consent mode: before you click OK on the notice shown on your first visit it sets no analytics cookies and sends Google only cookieless signals. After you click OK it sets first-party cookies (_ga and _ga_*) on ctoteachings.com and its subdomains, and we remember your OK in a cookie named ctot_consent on the same domain for up to two years, so the notice does not appear again on any of our sites in that browser. Google processes this information under its own privacy policy, and you can opt out of Google Analytics on every site with Google’s browser add-on.
Ad measurement: the LinkedIn Insight Tag and the Meta Pixel. Only after you click OK on the notice, our websites may also load the LinkedIn Insight Tag (LinkedIn) and the Meta Pixel (Meta Platforms); neither is loaded before that, and neither is ever loaded inside the LangLearn mobile app. We use them for ad measurement and retargeting: to count how many people who saw or clicked one of our ads went on to visit our sites, follow a link to one of our products, sign up or send an enquiry, and to show our ads again to people who have visited. They record the pages you view and those steps, and may set cookies such as Meta’s _fbp. We never send LinkedIn or Meta your name, email address or account ID, but they may recognise you if you use their services in the same browser, so this measurement is not anonymous to them. They process it under their own privacy policies (LinkedIn, Meta).
The notice offers only OK because our services are free, and to stay that way we rely on this analytics and ad measurement. If you do not want it, please do not continue, or block Google Analytics, the LinkedIn Insight Tag and the Meta Pixel in your browser.
Anonymous notice counter. So we can tell how many visitors leave without clicking OK, each site also tells our own server when the notice is shown, when OK is clicked, and when a page is closed while the notice is still showing, with roughly how long it was shown as a range such as 3–5 seconds; our short links likewise count each click. That message contains only which of these happened, the site’s host name, the page path and, for a visit that arrived through one of our short links, that link’s code and page version: no identifier and no query string, and no cookie is read or stored with it. Like any request it reaches our server with an IP address, which our hosting provider logs for security; we do not combine it with anything else. These counts are kept in our server logs for about 30 days.
Short links and page versions. When you arrive through one of our short links (ctoteachings.com/a/…), the link sets a cookie named ctot_campaign that tells the page which campaign the link belongs to; the page deletes it as soon as it has read it, and it expires after two minutes in any case. If the link compares versions of a page, a cookie named ctot_exp_ plus the test’s name remembers for 30 days which version you were shown, so you see the same one if you return.
We use the information we collect to:
Where data-protection law applies, we rely on one or more lawful bases for this processing: your consent (for example, newsletter sign-ups), our legitimate interests in running and growing our business, the performance of a contract with you, and compliance with legal obligations.
We do not sell your personal information. We share it only where necessary, with:
Our service providers may store or process information in countries other than your own. Where we transfer personal information across borders, we take reasonable steps to ensure it remains protected in line with this policy and applicable law.
We keep personal information only for as long as needed for the purposes set out above — for example, to answer your enquiry, maintain our client relationship, or meet legal and record-keeping requirements — after which we delete or anonymise it.
We apply appropriate technical and organisational measures designed to protect personal information against loss, misuse, and unauthorised access or disclosure. No method of transmission or storage is completely secure, but we work to safeguard your information and to limit access to those who need it.
Depending on where you live, you may have the right to access, correct, update, or delete your personal information, to object to or restrict certain processing, to withdraw consent, and to request a copy of your data. You can unsubscribe from our updates at any time using the link in our emails or by contacting us. To exercise any of these rights, please reach out through our contact page, and we will respond in line with applicable law.
Our website may link to third-party sites or services we do not control. This policy does not apply to those sites, and we encourage you to review their own privacy notices.
Our website and services are intended for businesses and professionals and are not directed to children. We do not knowingly collect personal information from children.
We may update this Privacy Policy from time to time to reflect changes in our practices or legal requirements. When we do, we will revise the "Last updated" date above, and any changes take effect once posted on this page.
If you have questions about this Privacy Policy, or would like to exercise your privacy rights or request deletion of your data, please get in touch through our contact page.