• Recording and analysis of the requirements from project teams.
• Analysis of performance problems in an jenkins build farming.
• Creation of a decision template for the management.
• Intigration and creation Linux agents for the Team Foundation Server.
• Restructuring of Ansible Playbooks according to best practices and expansion.
• Knowledge transfer by pair programming given.

• Development and support of a CI/CD infrastructure tailored to the needs of the client.  
• Recording and analysis of the requirements from the project teams.
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• Migration of a legazy c++ server application from bare metal to bare metal and from bare metal to virtual machine.
• Evaluation of tools for builds and debugging over remote, with a proof of concept.
• Support of customer communication on technical level.
• Troubleshooting of issus.

• Analysis, conceptual design, proof of concept and presentation of a provisioning of project infrastructure based on Ansible playbooks.

• Research, classification and presentation of Kubernetes products from different suppliers and projekts.
• Presentation by whitepaper, short movie and in person.
• This included attending a three-day training course: Red Hat OpenShift Administration I (DO280).
• Experiments with the internal private cloud, on a local VirtualBox and the VirtualBox.

• Research of OpenStack providers.
• Evaluation of OpenStack as s Service with a proof of concept (Rollout of a DC/OS Cluster with Ansible playbooks).

• Management of transformation processes, troubleshooting, customer support.
• Reverse engineering of undocumented code and tools.
• Completion of documentation.
• Peer programming.

• Familiarized myself with the subject of Maven, Groovy, declarative pipeline syntax and scripted pipeline syntax.
• Transferred knowledge to the team members.
• Conversion of a Jenkins setup into the new pipeline functionality

Role/Position: Senior IT System Engineer - agile operations / setup owner

• Familiarized myself with the subject of PKI and Kubernetes.
• Consulting, presales, project planning, management of transformation processes, in preparation for the conversion to Kubernetes.

Tools/Products: EJBCA, HSM (Hardware security module), Kubernetes, Bastion Host, CentOS Linux

• Responsibility for reengineering and dokumentation of legacy server setup with 100 machines.
• Implementation and documentation of standard operations processes.
• Troubleshooting, analysis and monitoring of standards and processes.
• Customer reports. 
• Out-of-date Puppet instances replaced with ansible. 
• Second level support.

Role/Position: DevOps Engineer

• Internal applications packed in docker container.
• Evaluation of container orchestration tools.
• Setting up an internal docker registry with Artifactory.
• Create an automated build and deployment process with GitLab CI runner.

Tools/Products: PHP, JavaScript, GitLab CI Runner, Artifactory, DNS, Reverse proxy, Floting IPs, NFS, Ansible, Keepalived, Docker Swarm, OpenShift, Kubernetes, Docker, Puppet, Debian Linux

Role/Position: DevOps Engineer

• Analysis of incompletely documented C/C++ code, build tools and build scripts.
• Documentation of interfaces and functionalities.
• Adaptation of build scripts.
• Creation of Dockerfiles.
• Automation of container builds.
• Presentation of results to team colleagues and heads of department.

Tools/Products: Atlassian Confluence, C/C++, Bash, Make, Eclipse, Ptxdist, Debian, Artifactory, Docker, Jenkins, GitLab CI Runner, Embedded Linux, Cross compiler, Debian Linux

Role/Position: Developer

• Analysis of partially 20 years old C/C++ code; documentation of interfaces and functionalities.
• Creation of a REST concept.
• Impl. of a WebClient with MVC-principle (with Python/Bottle).
• Impl. of a REST-Services with Queue-Management and concurrency (in Python/Bottle).
• Impl. of a REST-capable backend process in C++ (with Curl-Lib). Presentation of results.

Tools/Products: Bash, Python, Perl, Qt4, Qt5, C/C++, Bottle, Jenkins, Google Test, REST, Atlassian Confluence, openSUSE

• Familiarized myself with the subject of RubyOnRails.
• Analysis of the interfaces of the telephone system.
• Implementation and rollout of a webfrontent for a telephone system to display the employees in conversation.
• Reimplementation with Node.js and Bootstrap (CSS-Lib).
• Using of a public interface of Deutsche Bahn to show next available train.

Tools/Products: REST, Raspberry PI, RubyOnRails, Node.js, Bootstrap, JavaScript, Asterisk/Starface-API, Linux

Role/Position: Senior IT Consultant / Developer

• Familiarized myself and evaluation of SaltStack.
• Proof of concept.
• Implementation of SaltStack.
• Documentation and workshops carried out.

Tools/Products: SaltStack, CentOS, RHEL, Git, Apache, MySQL, iptables, sftp

Role/Position: Senior IT Consultant / Developer

• Implementation of a RPM-based fully automated rollout process for a shop system (Magento).
• Creation of the concept, RPM templates and automatic build scripts.
• Setup and integration of server components.
• Communication, coordination and agreement with customers and service partners.
• Documentation. Execution of the test and acceptance process.

Role/Position: IT Consultant / Developer

• Evaluation, change management, consulting and support in the context of automation, deployment and configuration management.
• Besides autodidactic preparation for the IHK exam as IT specialist - application development (in german: "Fachinformatiker - Anwendungsentwicklung").