My Portfolio

Services & Core Competencies

Professional IT infrastructure and tailor-made software development from a single source. Optimise your business processes with modern technologies.

Managed Firewall (OPNsense)

Maximum protection without complex licensing costs. Professional safeguarding of all your network traffic through a dedicated open-source firewall solution, tailored precisely to your company structure.

Key features:

  • Stateful packet inspection & packet filtering
  • Real-time intrusion detection and prevention (IDS/IPS)
  • Secure site-to-site VPN (OpenVPN/WireGuard)
  • Regular firmware updates & content filtering
Security

Windows Server & AD

End-to-end planning, seamless migration and ongoing administration of Windows Server systems. Building a central, scalable management layer for users, shares and resources.

Key features:

  • Active Directory Domain Services (AD DS)
  • Centralised control via Group Policy Objects (GPOs)
  • DNS, DHCP and file server configuration
  • In-place upgrades and infrastructure migrations
Infrastructure

Virtualisation & Backup

Optimal hardware utilisation through professional server consolidation – combined with a reliable backup strategy to effectively prevent data loss and ensure business continuity.

Key features:

  • VMware and Proxmox VE administration
  • Automated 3-2-1 backup rule implementation
  • Disaster recovery concepts with Veeam
  • Regular restore tests
Security

Modern Web Development

Conception, design and development of high-performance, accessible web applications and portals. State-of-the-art frameworks for reactive and dynamic user interfaces.

Key features:

  • Backend architecture with Modern PHP 8.x
  • Interactive frontends with Vue.js & JavaScript
  • Relational database design (MariaDB/MySQL)
  • SEO-optimised, semantically valid source code
Web

Custom Software

When off-the-shelf software reaches its limits, I create tailor-made solutions that integrate seamlessly into your existing workflows and automate them sustainably.

Key features:

  • REST API and web interface development
  • Automation scripts for CLI and cron jobs
  • Internal management systems & ERP extensions
  • Data migration from legacy systems
Custom

Consulting & System Maintenance

Continuous system maintenance and proactive care guarantee minimal downtime. I am your reliable partner for all IT matters.

Key features:

  • Proactive monitoring of business-critical systems
  • Timely security and OS update deployment
  • Fast first- and second-level support
  • Needs assessments and IT security consulting
Support