Kornel Peter Osztrovics
Kailua
Summary
Motivated Systems Engineer with extensive experience driving network security, monitoring, and problem-solving. Highly skilled with Database management and data-driven software development.
IT professional prepared for advancing IT infrastructure management and system reliability. Proven ability to manage servers, networks, and hardware, ensuring seamless operations. Known for strong team collaboration and adaptability to evolving technological needs, excelling in system troubleshooting and performance optimization.
Overview
29
29
years of professional experience
Work History
Systems Administrator
Hawaii Pacific University
03.2023 - Current
- Company Overview: Infrastructure and Datacenter Operation
- Maintain physical server in datacenter and server rooms, Dell cassis, servers and Storages, Supermicro servers, Nutanix clusters, Exagrid storages.
- Maintain hypervisors VMware ESX, vCenter, VMware Horizont server, Proxmox, Nutanix.
- Plan and manage moving from Nutanix to Proxmox, migrate VMs, migrate Hyperconvergent storage to GlusterFS
- Create Linux and Windows patching and maintaining workflow automation with Ansible, patching process and monitoring dashboard
- Maintain monitoring with LogicMonitor, create own datasources for Proxmox, escalation chains, connect to PagerDuty.
- Create deployment workflow with Hashicorp Packer and Terraform on vCenter and Proxmox - Red Hat, Debian, Ubuntu and Windows Server provisioning.
- Maintain on-premise MS Exchange server 2016-2019, plan end implement upgrade, maintain Hybrid deployment, maintain SMTP and connected DNS record settings (SPF, DMARK, DKIM), blacklist maintenance.
- Create VDI Linux golden images.
- Maintain Windows Server AD, DNS, DHCP failover and replication, Bind9 secondary DNS.
- Create log submission workflow on Windows Servers and Linux servers using FluentBit to uplod log data to DataDog.
- Install and maintain ggRock ESport facility management software.
- Maintain Veeam Backup software job and storage configuration
- Plan and implement mirroring backups to Azure and between Exagrid storages
- Plan and implement Azure AD User / Object backup with Zerto Keepit
- Research sustainable Hypervisor and HCI solution: KVM, Harvester, Ceph.
- Research sustainable DHCP, DNS, IPAM solutions.
- Plan and manage distribution upgrade from Red Hat 7 to Red Hat 8.
- Plan, create and implement Let's Encrypt automatic certificate deployment on Vmware, Horizon, Windows, Linux server and various services WSUS, Exchange, LDAP, Papercut NG
- Implement MDM with Jamfcloud and Apple School manager
- 2nd level support used ServiceNow ticketing.
- Full-time 40hpw
Linux System Administrator
Aloha-Tone LLC
12.2022 - 02.2023
- Manage 50+ virtual Debian Servers on Digital Ocean.
- Configure and install FreeSwitch PBX system.
- Create an automatic certificate deployment on VOIP phone clients.
- Configure FreeSwitch DialPlans, Call routes, trunk settings.
- Full-time 40hpw
System Engineer /Software Developer
HVG Kiado Zrt. Publishing House
04.2003 - 02.2023
- Manage 150+ physical machines, network switches, CISCO AP-s and Firewalls 3 VmWare ESX HA hosts with 100+ vms 100TB NetApp storage, VPN-s 1 DR site, 2nd level support based on TopDesk ticketing.
- Implement monitoring and alerting tool Nagios Grafana InfluxDB, Telegram, creating own checking commands for temperature sensors, printers, Azure resources. It makes the response time lower and the system monitoring more sense, and the issue detection quicker.
- Switch on-premise Exchange to Exchange Online, Install ADFS site on Azure Changes the old infrastructure to Cloud.
- Develop Full stack Digital Asset Management system for editorial image workflow: collect images from various sources with browser plug-in, file system automatization, and MS One-Drive API, connect images to issues, columns, articles, access images from editorial programs like InDesing, Photoshop, show articles statuses, administer publications and fees: Nextjs, Antd, Rust, Python / Solr, Postgres / Adobe CAP – Reduces the mistakes in workflow and reduces paperwork and handheld process, gives a quick overview of process status.
- Editorial searchable archive for issues between 1979-2022: Automatize article exports from InDesign to HTML, articles keywording, Nodejs Expressjs / Solr, Postgres – Replaces old windows program to a new platform-independent system, reduces the handheld work with automatization.
- Full time 40hpw
System Engineer /Software Developer
HVG Press Kft.
04.1996 - 04.2003
- Manage DTP hardware: imagesetters, plotters, drum scanners, printers.
- Manage Oracle subscriber databases.
- Support Variable Data Printing in Java iText, AppleScript reduce the RIP time to acquire and serve more customer.
- Create end to end encrypting document exchange system for Vietnamese editorial partners: Oracle WebDB PL/SQL.
- Full time 40hpw
Education
Bachelor of Science - Mathematics And Computer Science
06.1995
Skills
- Technologies: Linux Red Hat, Debian, Windows Server, Proxmox, VmWare Esx, MacOS, TCP-IP, Cisco FirePower, Azure, Exagrid, Nutanix, GusterFS, NetApp, EMC
- Tools: Ansible, Packer, Terraform, Logicmonitor, Datadog, WSUS, Nagios, Nginx, Apache ModSecurity, Servicenow, Topdesk, Bitbucket, Git, Bamboo, Veeam, Jamfcloud
- Databases: Postgres, Solr, InfluxDB, Oracle
- Languages: Javascript, Nextjs, Rust, Java, Bash, Powershell, Ruby, Python, Perl, Applescript, PL/SQL, PHP, Delphi
Timeline
Systems Administrator - Hawaii Pacific University
03.2023 - Current
Linux System Administrator - Aloha-Tone LLC
12.2022 - 02.2023
System Engineer /Software Developer - HVG Kiado Zrt. Publishing House
04.2003 - 02.2023
System Engineer /Software Developer - HVG Press Kft.
04.1996 - 04.2003
Eszterhazy Karoly Teacher Training College - Bachelor of Science, Mathematics And Computer Science
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