- Operation of an on-premises Kubernetes environment
- various Kubernetes clusters (Rel. 1.7 – Rel. 1.32) including related components like etcd, DNS/DHCP, virtualization of workers using libvirt, Ceph cluster for Persistent Volumes and S3-compatible storage
- Design and implementation of a system for synchronizing secrets from Pleasant Password Server to hosts/Kubernetes secrets (in Go)
- Design and implementation of a certificate authority based on Yubico YubiHSM (in Go)
- Design and implemenatation of a Debian local repository and mirror management tool based on Aptly (in Go)
- Design and implementation of a web SPA for infrastructure management and service deployments (in GWT/Java using OpenUI5) and corresponding backend services (in Go)
- Design and implementation of a web SPA for entry of travel expenses (in GWT/Java using OpenUI5) including cloud-based middleware (in Go) and integration with ABAP (in J2EE, ABAP)
- Design and implementation of a SAP GUI integrated COM component for scanning of documents via TWAIN driver and an ABAP implementation for attaching scanned documents via the generic object services menu (in C, ABAP)
- Maintenance and further development of an existing Visual Smalltalk Enterprise and Java based EDI tool, including retrofitting Unicode support, replacing a C network server with a Unicode-capable Java implementation
- Design and implementation of an extendable workflow engine specialized for document approval processes (in ABAP)
- Design and implementation of a tree-based programming/runtime environment (in ABAP)
- Design and implementation of a web SPA for invoice document approval (in GWT/Java using OpenUI5) including middleware (in J2EE) and integration in ABAP
- Design and implementation of a system for automated installation of ABAP application servers (a) on-demand for developers and project managers and (b) for automated import testing (in Java, ABAP)
- Design and implementation of a customer application for importing ABAP transport files in the correct order (in ABAP), including defining dependencies between ABAP transport files (based on Debian version schemes and relationships) (in ABAP) and a HTTP-based delivery server (in Perl)
- Design and implementation of an application for processing and posting of invoice data extracted from paper documents (in ABAP)
- SAP Basis Administration (Rel. 4.6C – Rel. 640)
- EDI Support Hotline
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