automation of tomcat & tomcat's WebApps deployment
automation of WebSphere & WebSphere's WebApps deployment
ansible automation
Problemmanagement & Bug-Analyzing
Splunk Log Aggregation, Monitoring

Automatisierung der  Automatisierung

Entwicklung der kompletten und standardisierten  CI/CDs Zyklus für mehrere MAVEN Basierte Projekte, Auto build, test, deploymement

GitFlow in automatisierten CI/CDs 

Groovy

DSL

Operations:

 - CMS Hosting & Operations:  FirstSpirit

 - microservices

 - wie Platformen wie :

   -- JBoss (WildFly) Cluster, Tomcat

 - CDN:  Akamai

 - Performance Optimierung

 - Automatisierung (Ansible, Rundeck, Jenkins, MVN )

Monitoring (Prometheus, Loki, Grafana, Graylog, ELK)

Container (Docker)

Azure (DC-Cloud Migration)

gitlab CI

Kubernetes

Bare metal & VM

python & Go development

Einrichtung, Erweiterung und Betrieb der Integration Umgebung auf Kubernetes Basis

Bugsuche, Analyse und Optimierung der kritischen Softwarekomponenten

Betrieb und Optimierung Atlasian Tools (Jira, Confluence, Crowd, etc)

caching und optimierung der Auslieferung, page speed (nginx, ira, etc) 

Dockerizing, deployment, Ansible, DevOps, System-Architektur, jenkins, CI / CD Pipeline,

Update und Migration der Software auf neue Gitlab Umgebung,

Einrichtung der CI/CD Pipelines in Gitlab CI

Einrichtung dynamisch erstallten gitlab-runners skalier im Swarm

Einrichtung und Verbesserung der Docker Swarm Umgebung

Analyse, Verbesserung, Bugfixing und Optimierung der Vorhandenen Installation und Hardware Aufteilung inklusieve Netzwerkkomponenten

main assignment (ITIL-based):

• rework all the Software in to Container (Docker)
• Automation pipelines
• Deployment
• re-orgonize all the Software into SaaS and IaaS based containerized environments
• re-orgonize the multiple Software projects into microservices and deploy it automatically into Kubernetes Cloud (Bluemix)

over 3Bil PI / 20M Uniq Users monthly
unix- and linux systems, web-application engineering
Coremedia CMS: operation, administration, infrastructure
/ platform architecture / planning / relaunches / project supervising main assignment (ITIL-based):

• Operation: problem, access, monitoring and incident management;
• Transition: change, planning, deployment and configuration management;
• Design: supplier, capacity and information security management;
• DevOps: Infrastructure (jenkins-job, config as a code), Test automation,deployment integration devOps and infrastructure:
• pipelines (Jenkins, Jenkinsfiles, groovy, DSL)
• Test Driven Design
• continuous delivery / continuous deployment / continuous integration applications and services in details:
• SaaS
• scaleable Architecture
• ITIL
• (IT) operation of enterprise online portals with satellite systems:
• apache, tomcat, varnish, Akamai;
• security, pentests, intrusion detection
• Project Management
• Scram / KANBAN
• DevOps: deployment, different environments, cookbooks (chef), Jenkins
• Coremedia:
• enterprise of Coremedia CMS clusters,CMS updates / migration / relaunch
• fine tuning of java JVM (example: gc settings)
• performance tuning
• trouble shouting (core files, mdb, gdb, java thread debugging, jvm tunning)
• Database performance analyze & optimization (Oracle, Postgres)
• advanced of database cluster administration (Oracle, Postgres)
• CDN-administration: Akamai configuration
• secondary systems:
• WEB Caching
• Jira / Clearspace / Confluence (HA Cluster)
• projects
• Virtual computing / Cloud Computing / Container based Infrasturcure
• docker
• libvirt / lxc
• VM Ware / vCloud
• vagrant / virtualbox (head less client mode for integration tests)
• packer
• Amazon AMI (EC2) instances :
• reproduce the complete product System of BILD.de
  (Oracle DB; Coremedia CMS) in a Cloud
• secondary projects with PHP:
• nginX, Apache / PHP, SQL (mySQL, Postgres);
• varnish, Apache / PHP, SQL (mySQL, Postgres);
• monitoring systems:
• splunk, graphite, graphana, collectd, SNMP, MRTG, Munin, Nagios,Zenoss
• DNS administration;
• CMS-administration (including user management strategy)

main assignment:

• projects:
• eye-Port (digital advertising)
• developing of architecture, systems design and software developing of hight available solution for digital advertising
• VOIP - IP-Telephony,
• Statistical processing
• network analysis and security architecture, DMZ, VPN, Firewall building
• ISP-projects
• online Application Hosting
• HA and loadbalancing Cluster solution
• Database administration and developing
• II level IT support for bank of Leipzig „Sparkasse Leipzig“,
• Distributed Systems
• Oracle Clusters

• assignment at „Malberg-EDV Systemberatung GmbH“
• architecturing of HA Linux-Clusters
• IP-telephony, LAN and DMZ design
• network analysis and security architecturing
• II level IT / DBA support of bank of Leipzig „Sparkasse Leipzig“

• various Client / Server systems with & database developing and administrating under mySQL and Oracle 9i
• II & III level support in different projects for Deutsche Telekom
• Backup

• Network- and system administration (Unix / Windows)