The Wombelix Post

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Personal

• Enjoying my side projects and open source contribution
• Troubleshooting and solving tricky, almost unsolvable issues
• Learning new things and improving Skills
• Spending time with my family and my dog

Summary

My current Position is Principal Engineer and Head of Infrastructure Operations at NTT Germany, Business Unit MAN. I'm an Open Source Enthusiast and Contributor, Dog Person, Passionate Engineer who loves solving tricky issues and always eager to learn new things. My professional career started in 2002 and has always been IT-centric, distinguished by broad knowledge of different technologies and fields. I'm responsible for the IT & Datacenter Infrastructure (Network, Compute, Storage, Hypervisor, Operating System) as well as Lead of the Operations Team located in Germany and Czechia. Adopting new Technologies and DevOps paradigm, Automation, Programming and Mentorship are important parts of his day-to-day business.

• Since 2002 experience in IT support, engineering, consulting
• 2nd and 3rd level support
• Project and people Management
• ITIL based Operations, Incident and Change handling
• DevOps, Automation and Software development
• Virtualization, High-Availability and Storage
• Datacenter, Hosting and IT-Outsourcing
• Various certifications from Red Hat, SUSE, SAP, Cisco, NetApp and others
• Quick comprehension, team worker, conscientious, service and solution oriented

Open Source

Open Source and contributing / being involved in the community of different projects, became an important part of my life. Following some of the projects I'm most interested and involved in and an Overview of some code contributions during the last year.

Job History

Focus on my permanent Position with NTT Germany since March 2019

August 2020 - present

Position: Principal Engineer & Head of Infrastructure Operations | Permanent

Company: NTT Germany AG & Co. KG | Bad Homburg

Business Unit: MAN

Sector: Network & IT Services

Summary:

• Datacenter Infrastructure responsibility
• Lead of Operations Team (L1, L2, L3) located in DE and CZ
• Support and coordinate global delivery units
• Acting as emergency support and escalation contact
• Mentoring, knowledge transfer and Documentation
• Insourcing, Budget Planning and Cost Optimization
• Configuration and Patch Management
• Automation and Development
• ITIL based Ticket and Incident handling
• Establishing and optimize operational processes

Technologies, Products, Tools:

• VMware vSphere, Cisco (UCS, Nexus, Catalyst, MDS, ASR, ASA), F5 Big-IP LTM, NetApp (ONTAP 9 - FAS, AFF, Metro Cluster), SAP HANA TDI
• SUSE SLES 12 / 15, Red Hat 7 / 8, Oracle Linux 7 / 8, openSUSE Leap 15, openSUSE MicroOS/ JeOS, Windows Server 2012 R2 / 2016
• SUSE Manager 4 / Uyuni, Red Hat Satellite 6, AWX, Gitea, Jenkins, iTop / TeemIP, TeamPass, NetBox, Observium, Grafana, Docker, Kubernetes
• NetApp SnapManager / SnapCenter (Oracle Database, SAP HANA Database), Commvault (Files, Oracle Database, SAP HANA Database, Microsoft SQL)
• Sophos Anti-Virus, CyberArk Privileged Access Manager, Cisco vWSA, Cisco ISE, Tufin, Microsoft Active Directory and DNS
• Python, Ansible, Scripting (Bash, Powershell), F5 iRules, RPM Packaging, TCPdump / Wireshark, BGP, HSRP, LACP, IPSec VPN
• Microsoft Azure, Jira, Confluence, Service-Now, HP Service Center, Cisco UCS Manager / Central, Sharepoint, BMC Control-M, Seal Systems Plossys

March 2019 - July 2020

Position: Lead Engineer Operations (L3) | Permanent

Company: NTT Germany AG & Co. KG (formerly Dimension Data) | Bad Homburg

Business Unit: MAN

Sector: Network & IT Services

Summary:

• ITIL based Operations Support, Ticket and Incident handling
• Establishing and optimize operational and deployment processes
• Datacenter Infrastructure Support, Optimization and Architecture
• Knowledge transfer and Documentation
• Configuration and Patch Management
• Automation and Development
• 24/7 On-Call support

Technologies, Products, Tools:

• VMware vSphere, Cisco (UCS, Nexus, Catalyst, MDS, ASR, ASA), F5 Big-IP LTM, NetApp (ONTAP 9 - FAS, AFF, Metro Cluster), SAP HANA TDI
• SUSE SLES 12 / 15, Red Hat 7, Oracle Linux 7, Windows Server 2012 R2 / 2016
• SUSE Manager 4 / Uyuni, Red Hat Satellite 6, Jenkins, iTop / TeemIP, TeamPass, Observium, Grafana
• NetApp SnapManager (Oracle Database), Commvault (Files, Oracle Database, SAP HANA Database, Microsoft SQL)
• Sophos Anti-Virus, CyberArk Privileged Access Manager, Cisco vWSA, Cisco ISE, Tufin, Microsoft Active Directory and DNS
• Python, Ansible, Scripting (Bash, Powershell), F5 iRules, TCPdump / Wireshark, BGP, HSRP, LACP, IPSec VPN
• Jira, Confluence, Service-Now, HP Service Center, Cisco UCS Manager / Central, Sharepoint

Januar 2007 - present

Position: Self-Employed / Company owner / Freelancer

Company: various

Sector: various

Summary:

• 2nd / 3rd Level Support
• ITIL / Operations
• DevOps / Software Engineering
• Virtualization / Storage
• Datacenter / Hosting
• IT Outsourcing
• Onsite Support
• Consulting
• Project Management
• People Management

Technologies, Products, Tools:

• openSUSE (42, Leap 15, Tumbleweed - MicroOS, JeOS), FreeBSD (12), Debian (7 - 10), Ubuntu (16.04, 18.04), CentOS (7), Oracle Linux (7 / 8), Red Hat Enterprise Linux (7 / 8), Windows Server (2000 - 2016), Windows (2000 - 10)
• Proxmox, KVM, FreeBSD Jails, Docker, Podman, Kubernetes (k8s, k3s), LXC, VMware vSphere, Microsoft Hyper-V
• MySQL / MariaDB, PostgreSQL, SQLite, Microsoft SQL, Bareos, Icinga, Check_MK, Microsoft Remote Desktop
• Python, Ansible, Scripting (Bash, PowerShell), PHP, HTML, CSS, JavaScript, Go, C#, VB.Net, Java, Make
• Wireguard, IPSec, OpenVPN, Puppet / Foreman, DRBD, Pacemaker, Corosync, DHCP, DNS (Bind, PowerDNS, Windows)
• Microsoft Exchange (2000 - 2013), Stratus everRun, OTRS, OPSI, Securepoint UTM, JTL Wawi, Lexware, Datev, MailStore
• Git, Gitea, Gitlab, Github, Pagure, Cgit, Open Build Service, RPM Packaging, FreeBSD Ports, Container Images (OCI)
• VIM, Screen / Tmux, Eclipse, Visual Studio Code / VSCodium

July 2006 - July 2007

Position: Systemadministrator

Company: IT-Service M+W Grossostheim GmbH

Sector: IT & Telecommunication

Short Summary

• 2nd Level Support
• ITIL / Operations
• IT Outsourcing

August 2003 - July 2006

Position: Apprentice Computer Science Expert (System Integration)

Company: IT-Service M+W Grosostheim GmbH

Sector: IT & Telecommunication

Short Summary

• 1st / 2nd Level Support
• End-User Helpdesk
• Onsite Support

January 2002 - July 2003

Position: Support Engineer

Company: Prosol Spraytechnik GmbH | Kleinostheim

Sector: Aerosol manufacturing

Short Summary

• 1st Level Support
• End-User Helpdesk
• Onsite Support

Project History

Extract from the last few years

August 2016 - February 2019

Position: Service Delivery Support Engineer (L2) | Freelancer

Company: Dimension Data Germany AG & Co. KG | Bad Homburg

Business Unit: MAN

Sector: Network & IT Services

Summary:

• ITIL based Operations Support, Ticket and Incident handling
• Establishing and optimize operational and deployment processes
• Datacenter Infrastructure Support, Optimization and Architecture
• Knowledge transfer and Documentation
• Configuration and Patch Management
• Automation and Development
• 24/7 On-Call support

Technologies, Products, Tools:

• VMware vSphere, Cisco (UCS, Nexus, Catalyst, MDS, ASR, ASA), F5 Big-IP LTM, NetApp (ONTAP 9 - FAS, AFF, Metro Cluster), SAP HANA TDI
• SUSE SLES 11 / 12, Red Hat 7, Oracle Linux 7, Windows Server 2008 R2 / 2012 R2 / 2016
• SUSE Manager 3, Red Hat Satellite 6, Jenkins, TeemIP, TeamPass, Observium
• NetApp SnapManager (Oracle Database), Commvault (Files, Oracle Database, SAP HANA Database, Microsoft SQL)
• Sophos Anti-Virus, CyberArk Privileged Access Manager, Cisco vWSA, Cisco ISE, Tufin, Microsoft Active Directory and DNS
• Python, Ansible, Scripting (Bash, Powershell), F5 iRules, TCPdump / Wireshark, BGP, HSRP, LACP, IPSec VPN
• Jira, Confluence, Service-Now, HP Service Center, Cisco UCS Manager / Central, Sharepoint

June 2015 - August 2015

Position: Datacenter Engineer, Consultant | Freelancer

Company: CGM Deutschland AG | Koblenz

Sector: Medical IT Services

Short Summary

• Monitoring System (Check_MK)
• Linux High-Availability Cluster (Ubuntu, Pacemaker, Corosync, DRBD)
• Configuration Management (Puppet / Foreman)
• Backup (Bareos)

February 2015 - May 2015

Position: Datacenter Engineer, Project Management | CEO Wombacher.IT GmbH

Company: JTL-Software GmbH | Remote

Sector: Independent Software Vendor (ISV)

Short Summary

• Proof of Concept & Project Management: Private Cloud Hosting for End-User
• Private Cloud Environment (Microsoft Hyper-V, Windows Server 2012 R2, Microsoft SQL Server 2012 Express and Remote Desktop Services)
• Deployment Automation with Ansible and Powershell

November 2014 - January 2015

Position: Consultant, Project Manager | CEO Wombacher.IT GmbH

Company: MAIREC Edelmetall GmbH | Alzenau

Sector: precious metals trade

Short Summary

• Physical to Virtual Migration (Stratus everRun fault-tolerant Cluster)
• Deployment and Migration (Microsoft Windows 2012 R2, Exchange Server 2013, Sharepoint, CentOS, Ubuntu, OTRS, OPSI)
• Migration of ERP System based on RedHat Linux to CentOS
• Firewall High-availability Cluster (Securepoint)
• CMDB and Ticketsystem (OTRS)
• Software Rollout (OPSI)
• ITIL based Support

Certifications