I was working as a Senior DevOps Engineer.

• implemented and operated highly available web services in the Cloud (AWS, GCP)
• administration and performance optimizations of SQL databases (MySQL, Postgresql)
• 3rd level trouble shooting of highly complex web applications
• Configuration Management with terraform and ansible
• automation and scriping with Bash and PHP
• Implementation and Improvements to CI/CD pipelines in Gitlab (including migration from Jenkins)
• adopt legacy deployment to a container based deployment
• migrated multiple projects into a “monorepo”

I was a member of the IT operations department focusing on Linux.

• Develop and maintain highly scaleable web projects (network design, monitoring, high availabilty and load balancing)
• administration of highly available databases (Percona MySQL, Postgresql, Elasticsearch)
• planning and performing service migrations respecting minimal downtime
• automating processes by using scripts (bash, PHP, Python)
• configuration management (puppet and ansible)
• network administration (ethernet, routing, VPNs)
• patiently debugging highly complex problems
• implementing a PCI-DSS conform infrastrucutre [Level 1 Service Provider]
• participating in on-call duty
• assistent head of operations

I was a member of the IT operations department focusing on Linux.

• Maintained 40 (virtual) servers accross three different datacenters in different countries
• Performed an Upgrade on the distributed Checkpoint Firewall
• Participating in a project to replace the legacy infrastructure with an VMware setup
• Participating in the on-call duty rotation

Co-Founder and CTO of an ISP providing the following services for over 500 customers including many business customers

• Domains
• Email
• Webspace
• Virtual Servers

During the time I developed a custom customer panel and setup an highly available infrastructure. The following software was used:

• Xen
• Linux
• Apache
• PHP
• Postfix
• Dovecot
• ProFTPd
• MySQL