OTTO

Optimization of shop performance and load behavior. Acceleration of the new Otto Online Shop live release.

I was hired as a consultant in this project to define, implement and test the Non Functional Requirements of the system. For this purpose, I introduced Performance Analyzes, Load Tests, Chaos Engineering and Robustness Tests adapted to the customer. A monitoring system monitored the Non Functional Requirements.

Due to the analyzes and the permanent monitoring, the online shop has been developed into an extremely stable system. The downtime of the shop is only in the minute range per year. Thus, the availability of the shop is far above the standard. At the same time the shop performance has been increased so much that the loading times of the shop pages are in the high performance range. Compared to other online stores such as Amazon Fashion, Zalando, Baur, Kaufhof and Tschibo, the OTTO Shop was in first place. 

Due to the importance of the Non Functional Requirements for robust and High Performance Software, an advisor team “Scale” was set up, in which I was co-founder. This team ensured the quality of the evolving online shop software in terms of Performance, Load, Robustness and Security.

New employees were hired for this. Within the team, I also worked on security related topics and took on the role of the PO in the development of the Security Belt. This was later released as an Open Source Project.
In the Lhotse project, I met a professional Agile Project Management, which made efficient and goal oriented work possible.