Privacy Policy

Effective date: 7th September 2025

This privacy policy explains how we collect, use, and protect your personal data when you visit or interact with https://moderndataengineering.com and related services.

1. Data Controller

Manuel Djirlic
Gerokstraße 19
74343 Sachsenheim
Germany

📧 freelance(at)djirlic.com

2. What Personal Data We Collect

We may collect and process the following data:

• Email address – when you subscribe to the newsletter or contact us

• IP address & browser data – automatically collected for security and analytics

• Voluntary information – if you fill out surveys, contact forms, or join mentoring/courses

3. Substack (Newsletter & Blog Hosting)

Our newsletter and blog are hosted via Substack Inc., 1209 Orange Street, Wilmington, Delaware, USA. When you subscribe or read content, Substack may collect personal data according to their privacy policy:

🔗 https://substack.com/privacy

4. Analytics & Performance

We may use privacy-friendly analytics tools to understand how the site is used. These tools do not store personally identifiable data.

5. Cookies

This site may use essential cookies to ensure proper functionality. We avoid tracking cookies unless explicitly added in the future with user consent.

6. Legal Basis (GDPR Article 6)

We process your data based on:

• Consent (Art. 6(1)(a) GDPR) – for subscriptions or course signups

• Contractual necessity (Art. 6(1)(b)) – to provide purchased services

• Legal obligations (Art. 6(1)(c)) – if required by tax or other laws

• Legitimate interest (Art. 6(1)(f)) – for security, performance, etc.

7. Data Retention

We store your data only as long as necessary for the purpose collected or as required by law (e.g., tax retention rules).

8. Your Rights (GDPR Articles 15–21)

You have the right to:

• Access your personal data

• Correct inaccuracies

• Request deletion (“right to be forgotten”)

• Object to processing

• Data portability

• Withdraw consent at any time

To exercise your rights, email us at freelance(at)djirlic.com.

9. Data Transfers Outside the EU

Some services (e.g. Substack, email, analytics) may involve data transfer to the USA. These are handled with appropriate safeguards under GDPR.

10. Changes to This Policy

We may update this policy as needed. Please check this page regularly for changes. Last updated: 7th September 2025.

11. Contact

For privacy-related questions, contact:

📧 freelance(at)djirlic.com