Sergii

Sergii Tkachenko, Senior VMWare Administrator

Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
PROFILE
Highly experienced IT professional with a focus on internetworking and converged infrastructure engineering.
Seeking a Senior VMware Administrator role in the EMEA region for leverage my extensive experience in managing and
maintaining virtual infrastructure to enhance business productivity and efficiency. Focused on working closely with
clients to determine technical project objectives, specifications and solutions.
A highly skilled VMware Administrator with over 15 years of experience in managing, designing, and
implementing complex virtualized infrastructure solutions for diverse organizations. Proficient in VMware ESXi, vSphere,
vRealize Suite. Excellent communication, analytical, and problem-solving skills.

SKILLS & QUALIFICATIONS
 Network Design, Planning & Maintenance High-availability networks, 4-5 9’s (99.999%)
 VMware Aria Automation, Orchestrator, Operations
 VMware HCI and Cloud Foundation
 VMware Lifecycle Manager and VUM
 Veeam Backup & Replication
 Proficient in VMware products such as ESXi, vSphere, vCenter
 Monitoring and analytic – Observium, Grafana, Influxdb
 Cisco IOS, JunOS, Extreme XOS, UNIX / BASH Shell
 Strong Cisco and Juniper skills/experience in middle/large ISP
 Windows server 2012, 2016, AD, ADFS, DNS, NPS
 Strong experience in configuring and upgrading Cisco and Juniper routers, switches
 Strong Cisco and Juniper routing and switching experience (LAN, WAN, VLAN, OSPF, BGP)
 Troubleshooting skills in BGP/OSPF/Spanning Tree

PROFESSIONAL EXPERIENCE

Freelance (01/2015 – Present)
Senior VMWare Engineer, Senior Network Architect
Manage and optimize a virtual infrastructure consisting of more than 700 ESXi hosts, 10000+ virtual machines,
and 40+ data centers.
Design, plan, and implement virtualization solutions to meet business requirements.
Configure and maintain VMware technologies, including ESXi, vSphere, vCenter, to ensure optimal performance
and availability.
Monitor and troubleshoot virtual infrastructure issues, including networking and storage.
Automate routine tasks using vRealize Automatization and Orchestrator to streamline processes and enhance
efficiency.
Planning and running migration from vRA 7 to vRA 8.
Develop and maintain documentation related to virtual infrastructure and processes.
Work collaboratively with cross-functional teams to provide technical support and resolve end-user issues.

Mixnet llc (2015-2016)
 Design, equipment selection and technical modeling in ISP environment.
 Creating initial system configurations.
 Modeling and equipment purchasing for VMWare cluster (compute nodes and shared storages)
 Creating and configuring hardware network side of VMWare cluster.
 Installing, configuring and commissioning of new VMWare cluster.
 Install and configuring several servers, such as: AAA tacacs and radius, network monitoring, mail, DNS, flow
analyzer and others.
 Transfer of "old" existing services from bare-metal to the new VMWare cloud.
TBC Soniko-communications LTD (05/2005 – 12/2014)
Senior Network Engineer
TBC Soniko was a semi-large telephone and internet company, located in East regions of Ukraine. I Responsible
for the Backbone, external channels, peering, customer integration, hardware and software design.
 Product support for access layer switches such as cisco 4948, 4507, juniper ex2200, ex3200 and distribution
layer switches such as cisco catalyst 6509, juniper QFX3500 and a routed core based on juniper mx serries.
 Install and configuring several servers, such as: network monitoring, mail, DNS, flow analyzer and others.
 Experienced with juniper Junos device configuration like juniper routers and switches in ISP environment.
 Create, preinstall, configure and insert to production level VMWare ESXi cluster, which included several
BareMetal servers, VCenter server with redundancy, LogInsight analyzer.
 Full scale BGP configuration, such as external links with traffic engineering (BGP Community, ACL and Prefix-lists
building, etc), peering’s (work with PeeringDB, private peers, several IX-s) and customers links.
 Internal connectivity between local Datacenters and technological cites (OSPF, RIP).
 Design, preinstall and support TDM network for telephony services (STM1, STM4, E3, E1)

Data Internet Ltd (INTS) (09/2000 – 05/2005)
Network Operations Center (NOC) Engineer
 Product support for access layer switches such as cisco 4948, 45xx and distribution layer switches such as cisco
catalyst 6509.
 Install and configuring several servers, such as: network monitoring, mail, DNS, flow analyzer and others.
 Full scale BGP configuration, such as external links with traffic engineering (BGP Community, ACL and Prefix-lists
building, etc), peering’s (work with PeeringDB, private peers, several IX-s) and customers links.
 Internal connectivity between local Datacenters and technological cites (OSPF, RIP).

EDUCATION
1995 – 2000
Donetsk State Institute of Artificial Intelligence Donetsk State Institute of Artificial Intelligence Specialist,
Programming

SERTIFICATES
VMware Certified Professional - Data Center Virtualization 2023
VMware Certified Specialist - vSAN 2023
VOP - Cloud Provider 2023
VOP - Consumption Based Offering 2022
VOP - Subscriptions Expert 2022
VOP - Cloud Provider 2020
VSP - Server Virtualization 2021
VTSP - Cloud Foundation (2020) 4.0
VTSP - Server Virtualization 2021
VOP - Managed Service Provider
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Experience with Cisco Series: 2800, 2900, 3600, 3700, 3750, 3800, 4000,5500, 6000/6500, 7600, 7200, 7500.
Juniper MX series (mx80, mx240, mx480, mx960), QFX series (qfx3500, qfx5100) and EX series.
Extreme Networks (x650, x670, x350, x450, etc.)
Dell, HPE and Cisco server hardware (including storages and blade systems)
IP Network Engineer, ISP, Cisco IOS, JunOS, BGP, Internet Peering, OSPF, VLAN, STP, DNS, DHCP, Multicast, RIP,
ACL, VPN, IPSec, GRE, HSRP/VRRP, SNMP, Radius, TACACS, Wireshark, TCPdump & more. Good Shell scripting. Strong
traffic engineering skills.
Last Updated: “04 January 2024”