Resume: Dominik Wombacher

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Contact

Address:Neumuehlstr. 15, 65510 Huenstetten, Germany
Website:https://dominik.wombacher.cc
Email:dominik@wombacher.cc
XMPP:wombelix@jabber.de
Matrix:@wombelix:matrix.org
Mastodon:@wombelix
Github:wombelix
Languages:English (fluent), German (native)

Personal

  • Enjoying my side projects and open source contribution
  • Troubleshooting and solving tricky / "unresolvable" issues
  • Learning new things and improving Skills
  • Spending time with my family and my dogs

Summary

  • 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

Job History

Focus on my permanent Position with NTT Germany since March 2019


August 2020 - present

Position: Head of Operations (L4) | Permanent
Company: NTT Germany AG & Co. KG | Bad Homburg
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


March 2019 - July 2020

Position: Lead Engineer Operations (L3) | Permanent
Company: NTT Germany AG & Co. KG (formerly Dimension Data) | Bad Homburg
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
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

06/2021:Red Hat Certified Specialist in Advanced Automation: Ansible Best Practices - Ansible 2.8, Tower 3.5 & Enterprise Linux 8
05/2021:Red Hat Certified Engineer - Ansible 2.8 & Enterprise Linux 8
05/2021:Red Hat Certified System Administrator - Enterprise Linux 8
11/2020:SAP Certified Technology Associate - System Administration (SAP ASE) with SAP NetWeaver 7.5
11/2020:SAP Certified Technology Associate - System Administration (Oracle DB) with SAP NetWeaver 7.5
10/2020:NetApp Certified Storage Installation Engineer, ONTAP (NCSIE)
10/2020:NetApp Certified Technology Associate (NCTA)
10/2020:SAP Certified Technology Associate - System Administration (SAP Max DB) with SAP NetWeaver 7.5
02/2020:Understanding of Cisco Network Devices - Level 200
05/2020:SUSE Certified Engineer (SCE) in Enterprise Linux 12
11/2019:SAP Certified Technology Associate - System Administration (SAP HANA) with SAP NetWeaver 7.5
10/2019:SAP Certified Technology Associate - OS/DB Migration for SAP NetWeaver 7.52
09/2019:Linux Professional Institute LPIC-1
08/2019:Cisco Certified Network Associate Routing and Switching (CCNA)
06/2019:Cisco Certified Entry Networking Technician (CCENT)
06/2019:ITIL Foundation v4 Certificate in IT Service Management
08/2019:SUSE Certified Administrator (SCA) in Enterprise Linux 12
02/2019:VMware vSphere 6.5 Foundations
01/2019:CyberArk Certified Trustee - Level 1
12/2018:SUSE Certified Administrator (SCA) in Systems Management / SUSE Manager 3
02/2015:Securepoint UTM Advanced Certified Engineer Platinum Level
07/2014:Microsoft Certified Professional (Exam 410 - Windows Server 2012)
04/2014:Securepoint UMA Certified Engineer Gold Level
02/2014:Auerswald PBX Level 3
11/2013:IHK Aschaffenburg Ordinance on Aptitude of Instructors (Ausbildereignungspruefung)
04/2013:Microsoft Certified Technology Specialist (SBS 2011)
10/2012:Securepoint Certified UTM Engineer Gold Level
10/2012:Securepoint Certified UTM Engineer Silver Level
10/2012:Securepoint UTM Network Expert Bronze Level
08/2009:Agfeo PBX Smart Home (WAC / EIB / KNX)
10/2008:Agfeo PBX ISDN over IP
08/2008:Agfeo PBX Gold Level
06/2008:Agfeo PBX Silver Level
04/2008:Agfeo PBX Bronze Level

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