Developed custom metrics in Golang services to enhance observability.Created and maintained Ansible playbooksIntroduced a centralized log management platform using ElasticsearchManaged cloud resources using TerraformConsolidated multiple HAProxy load balancers into a centralized cluster

Administered and tuned large-scale NoSQL databases (MongoDB, Redis, Cassandra)Maintained and optimized load balancer clustersAutomated and scaled cloud infrastructure on AWS and GCP using TerraformOperated a large-scale Kubernetes cluster, orchestrating containers for high-traffic applicationsLed the migration to a new AWS EKS-based infrastructure

Build a firewall automationManagment of partner connectivityTake care of F5 LoadbalancerManagment of firewall clustersRouting in Datacenter

Operating a Windows domain with DNS and DHCPMonitoring the servers and the company network infrastructureManaging the whole network infrastructure including switches, firewalls, and the technical setup of several European branch officesHandling the configuration management with puppetEnabling the automation of operating processesManaging the company’s internal email systemHandling the simultaneous operation of heterogeneous computer systems (e.g. Windows, Linux)Responsible for the technical operation of the company websitesProviding IT support for more than 160 employees at the Berlin officeOrder hardware and software

Operated the e-learning platformMonitored the serevrs and the network infrastructureAdministered central services like DNS, DHCP, LDAP, and KerberosManaged a VMware vSPhere virtualization environmentManaged internal services like wikis or the Issue-Tracking-SystemHandled the simultaneous operation of heterogeneous computer systems (e.g. Windows, Linux)Provided IT support for the university employees