Security Engineer

• Aug 2023 - Present

Site Reliability Engineer

• Mar 2014 - Sep 2023

In the past I've been working on the following topics: - Doing regular ops work (e.g. system/ops engineering tasks (Linux and Database Administration, Configuration Management, Load Balancer configuration)) - Writing/refactoring Puppet modules - Migrating global CDN infrastructure from Level3 to Akamai - Working on the https://stups.io/ infrastructure (Stack: AWS EC2, Route53, ELB, AutoScaling, Cloudformation and Docker) - Integrating AppDynamics to production infrastructure -… Show more In the past I've been working on the following topics: - Doing regular ops work (e.g. system/ops engineering tasks (Linux and Database Administration, Configuration Management, Load Balancer configuration)) - Writing/refactoring Puppet modules - Migrating global CDN infrastructure from Level3 to Akamai - Working on the https://stups.io/ infrastructure (Stack: AWS EC2, Route53, ELB, AutoScaling, Cloudformation and Docker) - Integrating AppDynamics to production infrastructure - Building services on top of Google Cloud Platform (Stack: Kubernetes and Google Container Engine) - Integrated Akamai Kona DDoS Defender, a Proxy-based DDoS mitigation solution, offered by Akamai to the Zalando infrastructure - Worked on bringing HTTP/2 to production for Zalando and Zalando Lounge - Coordinated and implemented the move of our SaaS logging infrastructure from the US to Europe - Drove 24/7 service support in our team and coaching other teams how the Zalando incident process works - Helped teams to understand how to log more cost efficiently and adopt it to their infrastructure - Actively took part in our 24/7 on-call rotation. Includes: Handling and coordinating incidents, writing Postmortems and presenting them at operational review meetings - Manage a proper 24/7 on-call coverage within the Observability team inside Zalando (Creating schedules, aligning with engineers and organize/drive meetings to talk reoccurring incidents and addressing them) - Build internal logging tooling on top of Kubernetes (on Amazon Web Services) - Distributed tracing (SLOs based alerting) - Lead a seamless migration of Grafana 8 to Grafana 9, including plugins and data sources (Used by ~2000 tech people at Zalando) Show less In the past I've been working on the following topics: - Doing regular ops work (e.g. system/ops engineering tasks (Linux and Database Administration, Configuration Management, Load Balancer configuration)) - Writing/refactoring Puppet modules - Migrating global CDN infrastructure from Level3 to Akamai - Working on the https://stups.io/ infrastructure (Stack: AWS EC2, Route53, ELB, AutoScaling, Cloudformation and Docker) - Integrating AppDynamics to production infrastructure -… Show more In the past I've been working on the following topics: - Doing regular ops work (e.g. system/ops engineering tasks (Linux and Database Administration, Configuration Management, Load Balancer configuration)) - Writing/refactoring Puppet modules - Migrating global CDN infrastructure from Level3 to Akamai - Working on the https://stups.io/ infrastructure (Stack: AWS EC2, Route53, ELB, AutoScaling, Cloudformation and Docker) - Integrating AppDynamics to production infrastructure - Building services on top of Google Cloud Platform (Stack: Kubernetes and Google Container Engine) - Integrated Akamai Kona DDoS Defender, a Proxy-based DDoS mitigation solution, offered by Akamai to the Zalando infrastructure - Worked on bringing HTTP/2 to production for Zalando and Zalando Lounge - Coordinated and implemented the move of our SaaS logging infrastructure from the US to Europe - Drove 24/7 service support in our team and coaching other teams how the Zalando incident process works - Helped teams to understand how to log more cost efficiently and adopt it to their infrastructure - Actively took part in our 24/7 on-call rotation. Includes: Handling and coordinating incidents, writing Postmortems and presenting them at operational review meetings - Manage a proper 24/7 on-call coverage within the Observability team inside Zalando (Creating schedules, aligning with engineers and organize/drive meetings to talk reoccurring incidents and addressing them) - Build internal logging tooling on top of Kubernetes (on Amazon Web Services) - Distributed tracing (SLOs based alerting) - Lead a seamless migration of Grafana 8 to Grafana 9, including plugins and data sources (Used by ~2000 tech people at Zalando) Show less

System Engineer

• Feb 2013 - Mar 2014

System Engineer

• Oct 2012 - Apr 2013

Junior System Engineer

• Aug 2011 - Aug 2012

Worked on rolling out an e-commerce IT infrastructure via Puppet for several startups (nginx, php5-fpm, MySQL stack). At Rocket Internet I've been working together with other System Engineers around the globe to educate people about our infrastructure as well as handing the infrastructure over to their new work force. I was involved working on the following Companies, to get as quickly to the market as… Show more Worked on rolling out an e-commerce IT infrastructure via Puppet for several startups (nginx, php5-fpm, MySQL stack). At Rocket Internet I've been working together with other System Engineers around the globe to educate people about our infrastructure as well as handing the infrastructure over to their new work force. I was involved working on the following Companies, to get as quickly to the market as possible: Africa: https://www.jumia.com/ http://www.zando.co.za/ India: http://www.jabong.com/ South America: http://www.dafiti.com http://www.mobly.com.br/ https://www.tricae.com.br/ Southeast Asia: http://worldwide.zalora.com/ http://www.lazada.com/ Australia: http://www.theiconic.com.au/ https://www.zanui.com.au/ Show less Worked on rolling out an e-commerce IT infrastructure via Puppet for several startups (nginx, php5-fpm, MySQL stack). At Rocket Internet I've been working together with other System Engineers around the globe to educate people about our infrastructure as well as handing the infrastructure over to their new work force. I was involved working on the following Companies, to get as quickly to the market as… Show more Worked on rolling out an e-commerce IT infrastructure via Puppet for several startups (nginx, php5-fpm, MySQL stack). At Rocket Internet I've been working together with other System Engineers around the globe to educate people about our infrastructure as well as handing the infrastructure over to their new work force. I was involved working on the following Companies, to get as quickly to the market as possible: Africa: https://www.jumia.com/ http://www.zando.co.za/ India: http://www.jabong.com/ South America: http://www.dafiti.com http://www.mobly.com.br/ https://www.tricae.com.br/ Southeast Asia: http://worldwide.zalora.com/ http://www.lazada.com/ Australia: http://www.theiconic.com.au/ https://www.zanui.com.au/ Show less

Auszubildender zum Fachinformatiker für Systemintegration

• Aug 2009 - Jul 2011

Auszubildender zum Fachinformatiker für Systemintegration

• Sep 2008 - Aug 2009