Three-day hands-on Puppet course for system administrators and DevOps engineers: Puppet architecture and infrastructure, the Puppet language (resources, classes, defined types, manifests), iterators and lambdas, facts, templates (EPP/ERB), data separation with Hiera, data types, custom functions, structuring code with modules and the roles-and-profiles pattern, version control with r10k, quality assurance (rspec-puppet, PDK), PuppetDB, and Bolt for agentless task execution.

Comprehensive three-day Qt training for C++ developers: fundamentals, signals and slots, object trees, localisation, GUI widgets, Qt Designer, custom painting, dialogs, layouts, drag-and-drop, item-based and model-view widgets, 2D graphics, container classes, SQL and JSON access, and multi-threaded programming.

Entwicklung dynamischer, geräteübergreifender UIs mit Qt QML: deklarative Oberflächen, Animationen, Zustandsmaschinen und Integration mit C++-Backends.

Konzeption und Implementierung wartbarer REST-APIs: Ressourcenmodellierung, HTTP-Verben, Statuscodes, Versionierung, Pagination, HATEOAS und Dokumentation mit OpenAPI.

Three-day hands-on SELinux course: mandatory access control architecture, SELinux modes, security contexts (users, roles, types, levels), policy concepts, file and process labelling, user mapping, role transitions, process domains, network labelling, boolean management, audit log analysis, writing and compiling custom type-enforcement policies, and practical troubleshooting with audit2allow.

Fundamente guter Softwarearchitektur: Architekturstile, Qualitätsmerkmale, Schnittstellen, Dokumentation und Entscheidungsfindung in der Praxis.

Practical three-day Terraform course focused on Azure infrastructure: HCL fundamentals, variable types and data structures, Azure networking (VNets, NSGs), virtual machines, storage accounts, databases, DNS, scaling, Terraform modules, remote state, and CI/CD integration.

Testgetriebene Entwicklung in der Praxis: Red-Green-Refactor-Zyklus, Unit Tests, Testdesign, Mocking und Integration in den Entwicklungsalltag.