Legal notices

Imprint

Information pursuant to § 5 DDG (Digitale-Dienste-Gesetz)

Julian Seiss
Diepeschrather Straße 37
51069 Köln
Germany

Contact

Phone: +49 151 275 282 43
Email: julian@seiss.io
GPG Key: julian@seiss.io.asc

VAT ID

VAT identification number pursuant to § 27a UStG:
DE413621527

Liability for content

As a service provider, I am responsible for my own content on these pages pursuant to § 7 Abs. 1 DDG. However, pursuant to §§ 8 to 10 DDG, I am not obligated to monitor transmitted or stored third-party information or to investigate circumstances indicating illegal activity. Obligations to remove or block the use of information under general law remain unaffected. Liability in this regard is only possible from the time of knowledge of a specific infringement. Upon becoming aware of such violations, I will remove the content immediately.

Liability for links

This website contains links to external third-party websites, over the content of which I have no control. I cannot, therefore, make any guarantees regarding this third-party content. Responsibility for the content of linked sites lies solely with the provider or operator of the site concerned. All linked sites were checked for possible violations of the law when they were linked to mine. At that time I was not aware of any content which may violate the law. However, permanent monitoring of linked sites is not reasonable without concrete evidence of a violation. On becoming aware of such a violation I shall remove the respective link immediately.

Copyright

The content and works on these pages created by the site operator are subject to German copyright law. Reproduction, processing, distribution, and any form of exploitation beyond the limits of copyright law require the written consent of the respective author or creator. Downloads and copies of this site are permitted for private, non-commercial use only. Insofar as the content on this site was not created by the operator, the copyrights of third parties are respected. Should you become aware of a copyright infringement, please notify me accordingly. Upon becoming aware of such violations, I will remove the content immediately.

Privacy policy

1. Data controller

The data controller within the meaning of the General Data Protection Regulation (GDPR) is:

Julian Seiss
Diepeschrather Straße 37
51069 Köln
Germany
Email: julian@seiss.io

2. Overview of data processing

This website does not use cookies, analytics tools, tracking scripts, or any third-party services. No fonts, scripts, or other resources are loaded from external servers. All assets are served directly from this domain.

3. Hosting

This website is hosted by Fly.io (Fly.io, Inc., Chicago, IL, USA). The application runs on servers in the EU (Amsterdam). When you access this website, the web server automatically records technical information in server log files, including:

• IP address of the requesting device
• Date and time of access
• Requested URL and HTTP method
• HTTP status code and response size
• Browser user agent string
• Referring URL

This data is processed on the basis of Art. 6 Abs. 1 lit. f GDPR (legitimate interest). The legitimate interest lies in ensuring the stable and secure operation of the website. Log data is not combined with other data sources. Server logs are automatically deleted after 14 days.

Fly.io processes data on our behalf and is contractually obligated to ensure appropriate data protection measures. For more information, see Fly.io’s privacy policy.

4. SSL/TLS encryption

This site uses SSL/TLS encryption for security reasons and to protect the transmission of personal data. You can recognise an encrypted connection by the "https://" prefix in your browser’s address bar.

5. Contact by email and phone

If you contact me by email or phone, the data you provide (such as your email address, phone number, name, and message content) will be stored for the purpose of processing your enquiry and in case of follow-up questions. This data is processed on the basis of Art. 6 Abs. 1 lit. b GDPR (contract or pre-contractual measures) or Art. 6 Abs. 1 lit. f GDPR (legitimate interest in responding to enquiries). This data will not be passed on to third parties without your consent. Your data will be deleted once the purpose of storage no longer applies and no statutory retention obligations prevent deletion.

6. External links

This website contains links to external platforms (e.g. LinkedIn, Xing, GitHub). These are plain hyperlinks — no content, scripts, or tracking pixels from these platforms are loaded on this website. When you follow an external link, you leave this site and are subject to the privacy policy and terms of the respective platform.

7. Your rights

Under the GDPR, you have the following rights with respect to your personal data:

• Right of access (Art. 15 GDPR)
• Right to rectification (Art. 16 GDPR)
• Right to erasure (Art. 17 GDPR)
• Right to restriction of processing (Art. 18 GDPR)
• Right to data portability (Art. 20 GDPR)
• Right to object (Art. 21 GDPR)

To exercise any of these rights, please contact me at julian@seiss.io.

8. Right to lodge a complaint

You have the right to lodge a complaint with a data protection supervisory authority. The competent authority is:

Landesbeauftragte für Datenschutz und Informationsfreiheit Nordrhein-Westfalen (LDI NRW)
Kavalleriestraße 2-4
40213 Düsseldorf
Website: www.ldi.nrw.de

9. Changes to this privacy policy

This privacy policy is current as of March 2026. I reserve the right to update this policy to reflect changes in data processing practices or legal requirements.