Linux server administration
Installation, hardening, updates, monitoring and troubleshooting for AlmaLinux, Rocky, Debian and Ubuntu. Reliable operations instead of surprises.
Learn moreServices
All services for companies in Germany are delivered remotely: from ongoing IT support through servers and network administration to software development. You get a fixed contact person, documented work and clear prices.
Remote services
Via secured access to your systems, with alignment by video call, ticket or chat.
Java development
Backends, REST APIs, automation tools and integrations in Java. Experience from leading a multi-year cloud gaming project with proxy infrastructure.
Learn morePHP development
PHP 8 with a focus on security: WHMCS and Plesk modules, payment and registrar integrations, REST APIs and custom web applications.
Learn moreWebsite development
Company websites that load in a fraction of a second, rank on Google and comply with GDPR. Custom-built or based on a CMS.
Learn moreAnsible automation
Playbooks, roles, AWX and Ansible Automation Platform: reproducible servers, automated patch days and rollouts across multiple stages.
Learn moreCloud and virtualisation
Proxmox VE, XCP-ng, KVM, Docker, Swarm and Kubernetes: private cloud platforms, container operations and hybrid architectures that fit the budget.
Learn moreNetwork administration and firewall
OPNsense firewalls, VLANs, VPN with WireGuard and IPsec, routing up to BGP, enterprise switches and the analysis of stubborn faults.
Learn moreIT security and backup
Server hardening, two-factor and passkeys, monitoring with alerting and backups that actually work when it matters.
Learn moreIT support and managed services
Your external IT department: helpdesk, updates, monitoring and user management, billed based on effort or with an hour bundle, without a monthly fee.
Learn moreMicrosoft 365 and email
Tenant, domain, email migration, Teams, OneDrive and multi-factor authentication set up cleanly instead of guessing in a web console for days.
Learn moreWindows Server and Active Directory
Active Directory, group policies, file servers, Remote Desktop and Hyper-V: build, migrate and secure Windows Server environments.
Learn moreWebsite maintenance
Updates with staging, backups, malware protection, load time and monitoring so your website stays secure and fast.
Learn moreIT consulting
Vendor-neutral and understandable: inventory, system selection, cloud or own server, security and costs under control.
Learn moreOn-site services in Austria
For Vienna and the surrounding area I additionally offer Wi-Fi and network installation, NAS setup, server maintenance and emergency support on site.
How we work together
Request
Describe your needs briefly via the form, WhatsApp or the live chat.
Assessment
Within one business day you receive an assessment with effort, price and a proposed date.
Implementation
I do the work personally, remotely via secured access or on site, and keep you updated throughout.
Handover and invoice
Documented handover, then an invoice from KernelHost GmbH with convenient payment via kernelhost.com.