The diary-form thesis demonstrates the author’s ability to apply her knowledge and skills in a practical role as a DevOps Engineer Inter in a multinational telecommunications company. The work presented in the thesis has been following the author’s progress, gained knowledge, as well as professional and personal development. The daily entries in the thesis include eight weeks of observation, where for each week the work is described, and then the summary of insights and new findings is provided in the weekly analysis. Tasks during the observation period were mainly related to modifications and testing of Ansible scripts for security automation, and testing and verification of the company’s product releases. In terms of research approach, ...