Tobias “Tobi” Koch

Working on a multi-purpose embedded Linux OS and a set of tools that will change the way developers (cross-)compile and build Linux-based appliances, virtual machine images and containers.

Caius is a functional testing framework written in object-oriented Tcl using the [incr Tcl] extension. It provides intuitive, object-oriented programming interfaces to Expect and Selenium WebDriver. The Markdown processor written for Caius served as the basis for the markdown module included in Tcllib since version 1.18.

ecromedos is an integrated solution for XML-based publishing in print and on the Web. It is primarily targeted at, but not limited to, the creation of technical documentation in the field of Computer Science. Documents are written in a semantic markup language and converted to representational formats with a dedicated processing toolchain.

Created a meta build system on top of CMake for highly modular mixed C++ and Python source trees. Migrated a fleet of robots from Ubuntu Xenial to Bionic. Automated kernel and custom system image builds. Set up a comprehensive CI/CD pipeline. Designed and implemented large parts of an over-the-air update mechanism.

Worked on cloud image generation, testing and publication. Made the necessary changes in tooling to parallelize image build pipelines. Migrated image publication to new publication infrastructure of one of the major public clouds.

Worked on the implementation of algorithms for controlling a differential drive robot, including trajectory planning, motion control and interface layers. Performed extensive refactoring on an organically-grown code base. Implemented a build system and simplified deployments by orders of magnitude.

Responsible for the technical architecture and delivery of an identity management system for a multi-national client. Turned around a project with significant technical debt by implementing software engineering best practices and by reconfiguring the engineering team.

Developed a VPN server appliance for secure access to industrial remote networks and devices. Designed and implemented a number of core components as well as the installation system. Worked on the configuration interfaces (Web, CLI, SNMP) of WLAN routers and DSL modems running an embedded Linux OS. Significantly reduced programming effort by automating code generation from existing interface descriptions.

Developed a data warehouse engine and information radiator for the build and integration systems of the MeeGo project. Helped reduce the duration of test and integration cycles and created visibility of integration status and project health for project management. Created a performance test framework for the UI of the MeeGo operating system running on the N9 handset. Helped detect and prevent performance regressions on multiple occasions.

Handled software integration for development teams in a large embedded Linux project.

Worked as a network security specialist in the Managed Security Services team. Managed firewalls, VPN access points, application layer gateways and certificate authorities.

Automated the conversion of technical product documentation from HTML to semantic XML.

Conducted black-box security analysis of commercial software products in the IT security test lab.

Configured and maintained Linux servers. Worked on prototype software for the analysis of urban traffic patterns.

Configured a Linux cluster with diskless nodes. Implemented an algorithm for the conversion of large 3D meshes into a progressive mesh data format.

Configured and maintained Linux servers. Wrote Web applications in PHP.