Tamas Wallner
Lead Operations Engineer
Bettystown
Summary
A highly skilled technical professional with extensive experience. From client support to worldwide enterprise architect projects. Learn easily and be eager to explore new and unknown territories in IT. Able to work under heavy load without any stress syndromes. Able to lead and able to follow the leader(s). Very open-minded with a fast response time to any issue.
Overview
29
29
years of professional experience
6
6
Certifications
2
2
Languages
Work History
Lead Operations Engineer
Guidewire Software
08.2022 - Current
- Google Workspace full stack administrator
- Patching replacement project moving from Microsoft SCCM to ManageEngine DesktopCentral.
- Part of the Office 365 to Google Workspace migration project
- Part of the Red Team internal security auditing team
- Technical leader of the Windows operations team
- Implementing new patching procedures (SCCM, Microsoft Endpoint/inTune, Manage Engine Desktop Central) for OS and 3rd party applications including zero-day vulnerabilities
- Working with the Security operations team to eliminate vulnerabilities on the Windows OS and 3rd party application side
- Global application management (inTune/Desktop Central)
- Automation and reporting duties for day-to-day tasks (including reporting, monitoring, application management) using PowerShell and Python scripting
- Technical lead of the BizTech Operations Team (2 global locations, 3 members)
Senior Systems Engineer
Guidewire Software
05.2020 - 08.2022
- Working as a part of BizTech team focusing on the following fields
- Windows Server infrastructure (physical and virtual)
- On-premise and Azure AD and related services like DHCP, DNS, user management
- O365 and Azure services like MDM (inTune), user and group management (Azure AD) or e-mail subsystem (Hybrid Exchange/Exchange on-line)
- Jamf (mac device and patch management)
- Virtualization – VMware platform
- Monitoring – DataDog
- Patch management – SCCM, Jamf
- AWS cloud – Virtual machine management, EC2
- Anti-virus management – Crowdstrike
- Privileged access management – Cyberark PV and EPM
Infrastructure Architect
Dublin Airport Authority (DAA)
10.2015 - 05.2020
- Working on internal, airport specific projects on various platforms including azure enterprise applications, inTune and Azure AD as well as local solutions.
- Design and implement the new, SCOM based monitoring infrastructure for a company specific internal application which is very important for handling company’s customers. All the design and implementation phase must be done without affecting the operation. Technical lead for SCOM 2012 to SCOM 2016 technology upgrade and refactoring the entire monitoring solution. Then the rollout from 2016 to 2019.
- Design and implement a new SCOM-based monitoring infrastructure for company-specific Oracle applications running on the Linux operating system. The application is significant for the company’s day-to-day operation, which means the monitoring must be state-of-the-art.
- Design and implement an Active Directory upgrade across all the company’s sites, ensuring minimal impact on the existing infrastructure, including high-priority applications. This upgrade replaces the existing Windows 2008 R2 domain controllers with Windows Server 2012 R2 Server Core edition and upgrades the Domain and Forrest levels to the latest possible levels. Then do the same from 2012 R2 to 2016.
- Designing an HA DHCP solution on each site running on Windows Server 2012 R2 Core Edition in Failover Hot Standby mode.
- Technical lead on various projects like Active Directory security improvements, focusing on our on-premise Active Directory, Cisco AMP rollout, SCOM 2016 and SCOM 2019 rollout, Windows Server OS refreshment project.
- Automate procedures using PowerShell scripting and Bash scripting (on Linux RHE)
- Design and implement a global proxy solution based on Sophos UTM9, replacing the existing proxy solution. Including a whole spectrum system and security design, migration and training. Including client-side AV/HIPS/behaviour analysis-based protection.
- Technical Architect and lead implementor of the new proxy solution replacing Sophos UTM9
- Working on a company-wide OS refresh project, including the elimination of application and service-level single points of failure and implementing business-based disaster recovery and business continuity plans
- Redesign the existing Microsoft InTune infrastructure, including the mobile workspace requirements, and develop new polices for the mobile workforce.
- Work on on-premise to cloud transformation using Microsoft Azure/Office365 (including EOL, SPOL, InTune, Azure and Security as examples)
- Working on the CyberARK PAM solution rollout.
- Provide 24/7 Level 3 support for the infrastructure on an on-call basis.
Solution Architect (Cloud, Data center)
Unisys
02.2013 - 10.2015
- Member of the Architect team as specialised solution architect focusing on Data Centre solutions, Cloud-based solutions (Unisys OneCloud, Microsoft Azure, Amazon AWS or VMWare Air) and Virtualisation (Microsoft Hyper-V or VMWare-based platforms)
- Storage SME for EMC, NetApp and HDS-based storage design.
- Create support plans for projects, including detailed technical specifications and pricing information.
- Supporting the pre-sales team regarding technical and architectural design and decisions for Data Centres, Cloud-based solutions and Virtualisation solutions on all supported platforms.
- Working closely with delivery and Bid finance managers.
Systems Architect
LogMeIn
02.2008 - 02.2013
- Design and plan new infrastructure changes and significant updates to existing infrastructure.
- Key worldwide projects: System Centre 2012 implementation (SCOM, App controller, DPM, Endpoint Protection, Orchestrator, VMM, SCSM, SCCM) \
- Daily support for end users (~1.000 users in 5 locations worldwide), continuous monitoring and troubleshooting of server infrastructure, including bare metal and virtual servers and their applications and the local/VPN network.
- 24x7x365 on-call support
L3 Technical Support Engineer (Servers)
ExxonMobil BSC
02.2006 - 02.2008
- Provide L3 support for ~6.500 Dell and ~1.500 HP servers running on different versions of Windows (NT 4.0 – Windows Server 2003) worldwide on a lead-the-sun basis.
- Projects:
- 3G Implementation projects (Europe)
- Policy and process built for L3 support (worldwide)
- Backup L3 and Anti-virus L3 support team member (worldwide)
Senior Systems Adminstrator
ScanSoft-Recognita / Nuance
05.2002 - 02.2006
- Daily user support and server monitoring, management, and administration
- TrendMicro Anti-Virus solution (Europe)
- Active Directory design and implementation (Europe)
- Server consolidation and virtualisation (Europe)
- Design and implementation of Microsoft Exchange 2000 infrastructure (Europe)
- Intranet portal design and implementation (Hungary)
GSM Support Engineer
Ericsson
05.2001 - 05.2002
- Support T-Mobile GSM infrastructure
- On-site member for T-Mobile NOC (AXE/GSM Network support)
- Design and implement a new intranet portal for the GSM Support division (Hungary)
Systems Adminstrator
Vodafone Hungary
05.2000 - 05.2001
- Design and implement Vodafone’s office move with zero downtime (Hungary)
- Design and implement Active Directory 2000 roll-out (Europe)
- Oracle database integration implementation (Hungary)
Microsoft Systems Specialist
Synergon Informatika
09.1999 - 05.2000
- Implementation projects:
- ALCOA – Server consolidation (Europe)
- BA-CA – Server consolidation (Hungary)
- K & H Bank – Team lead for Lotus Notes client implementation (Hungary)
Service Lead
Co-Net Computers
06.1996 - 09.1999
- Daily support for customers regarding hardware and software issues (1st level to 3rd level)
- Sales, logistics and 3rd party vendor management
- New internet and intranet site for Co-Net Computers (Hungary)
- Design and implement procedures and KPIs (SLO/SLA levels)
Education
Programing / Agricultural Engineering
06.1996
Skills
Full stack of Microsoft Technologies
Microsoft Servers
Microsoft Desktop solutions
Microsoft System Center suite
Office 365
Microsoft InTune
JAMF
Manage Engine Desktop Central
Pagerduty
Amazon AWS suite
PowerShell and other scripting tools
Python
VMWare
CyberArk EPM / Password Vault
DataDog
Google Workspace
Certification
MCP 70-400 – Configuring and administering System Center 2007 - 2012
References
References available on request.
Timeline
Lead Operations Engineer - Guidewire Software
08.2022 - Current
Senior Systems Engineer - Guidewire Software
05.2020 - 08.2022
Infrastructure Architect - Dublin Airport Authority (DAA)
10.2015 - 05.2020
Solution Architect (Cloud, Data center) - Unisys
02.2013 - 10.2015
Systems Architect - LogMeIn
02.2008 - 02.2013
L3 Technical Support Engineer (Servers) - ExxonMobil BSC
02.2006 - 02.2008
Senior Systems Adminstrator - ScanSoft-Recognita / Nuance
05.2002 - 02.2006
GSM Support Engineer - Ericsson
05.2001 - 05.2002
Systems Adminstrator - Vodafone Hungary
05.2000 - 05.2001
Microsoft Systems Specialist - Synergon Informatika
09.1999 - 05.2000
Service Lead - Co-Net Computers
06.1996 - 09.1999
GATE-MFK - , Programing / Agricultural Engineering