Context
Industry: Mobility / Leasing
Organization: SIXT / SIXT Leasing SE
Environment: AWS
Focus: Kubernetes, DevOps platform, security
Scope: Platform architecture and implementation
My involvement: Lead DevOps / Infrastructure Architect
Year: 2019–2020
Introduction
This project took place at SIXT, a large international mobility and leasing group, where I worked as Lead DevOps in the Ukrainian R&D office. The focus was on creating a shared Cloud and DevOps foundation for multiple internal projects within Sixt Leasing SE.
My role combined architecture design, hands-on implementation, and team leadership, with the goal of replacing fragmented legacy setups with a unified and scalable platform.
The Situation
Different teams were developing and operating multiple projects with varying infrastructure setups, delivery pipelines, and operational practices. Legacy systems limited scalability and made changes slow and risky.
There was a clear need for a common platform that could support all projects consistently, reduce duplication, and provide better visibility and security across the organization.
At the same time, the platform had to support modern application patterns, including microservices, while remaining stable for existing business workloads.
What Was Done
I participated in architectural discussions with Team Leads and Executive managers regarding the future direction of the IT landscape.
A unified Kubernetes platform was designed and implemented for all projects. The first cluster was built using Kops on AWS and later migrated to a centralized Kubernetes cluster based on AWS EKS to improve reliability and operational simplicity.
A single CI/CD solution was created for all development teams using Jenkins with dynamic build agents. This standardized delivery processes and reduced operational overhead.
I also designed and implemented monitoring and reporting solutions to improve visibility across environments. In parallel, I was responsible for the security architecture and participated in internal penetration testing activities.
My Role
I worked as Lead DevOps and Infrastructure Architect, responsible for platform architecture, implementation, and evolution.
My role included designing cloud and Kubernetes architecture, building DevOps practices from scratch, leading a team of DevOps engineers, and coordinating technical decisions with management and development teams.
Outcomes
A shared cloud and DevOps platform was successfully established and adopted across multiple projects.
Teams gained a consistent Kubernetes-based runtime, standardized CI/CD pipelines, and improved monitoring and security practices. Legacy infrastructure was refactored and migrated to cloud-based solutions with minimal disruption.
The platform provided a solid foundation for further growth and modernization within Sixt Leasing SE.
Key Takeaways
This project showed how much complexity can be removed by standardizing platforms and delivery practices across teams.
It also demonstrated the value of building cloud and DevOps capabilities as shared infrastructure, rather than solving the same problems repeatedly in individual projects.
How This Experience Helps in Similar Situations
Many organizations struggle with fragmented DevOps practices and inconsistent cloud setups. I help teams design and build unified platforms that support multiple products, scale with demand, and improve security and operational clarity.
This includes Kubernetes platform design, CI/CD standardization, monitoring, and security architecture.
Related Products & Materials
Several aspects of this project are reflected in my document packs related to DevOps platform design, Kubernetes architecture, CI/CD standardization, and cloud security.
Closing
If you are building or refactoring a shared cloud and DevOps platform across multiple teams, this project reflects the type of leadership and hands-on work I provide.