# Aurelius Julian Ballweber > Senior System Architect & Security Expert based in Lörrach, > Germany. Independent consulting in IT security, system > architecture and data protection (GDPR/DSGVO) — direct, > personal work with no intermediaries. Over 26 years of > experience in complex international IT infrastructures. > Independent freelancer since 2025. Also known professionally as Marian Amza (nickname "tex"), under which he was previously active in IT consulting and the open-source community. Services include: technical security audits and penetration testing, system hardening and attack surface reduction, firewall architecture and network segmentation, attack detection and forensic analysis, secure communication infrastructures, enterprise Linux engineering and scaling, infrastructure design, routing and DNS strategy, database performance tuning (MySQL/PostgreSQL), high availability and disaster recovery concepts, embedded and legacy system solutions, Privacy by Design implementation, external Data Protection Officer (Datenschutzbeauftragter) services, technical GDPR audits, records of processing activities, technical and organisational measures (TOMs), and data protection impact assessments (DPIA/DSFA). Clients work directly with me — no agency overhead, no outsourcing. The site itself uses no cookies, no tracking and no external analytics, and runs on its own infrastructure with no third-party cloud hosting or CDN involved. ## Sections Each language version is a single page with the following sections (shown here for the German/default version; the same anchors exist on every translated page): - [Über mich / About](https://www.ballweber.org/#brief): background, 26+ years of experience, working style - [Dienstleistungen / Services](https://www.ballweber.org/#services): security, systems architecture and engineering services offered - [Datenschutz / GDPR](https://www.ballweber.org/#datenschutz): data protection consulting, external DPO services - [Kontakt / Contact](https://www.ballweber.org/#contact): how to get in touch (no email address is published in plain text; see the contact section on the page) ## Pages - [Deutsch](https://www.ballweber.org/): main page (German) - [English](https://www.ballweber.org/en): English version - [Français](https://www.ballweber.org/fr): French version - [Nederlands](https://www.ballweber.org/nl): Dutch version - [Italiano](https://www.ballweber.org/it): Italian version - [Español](https://www.ballweber.org/es): Spanish version - [Português](https://www.ballweber.org/pt): Portuguese version --- Last updated: 2026-08-04