Андрій

Andrii Chaikovsky
Infrastructure Engineer — Network Infrastructure
Fastiv, Kyiv Region, Ukraine
[відкрити контакти](див. вище в блоці «контактна інформація») # [відкрити контакти](див. вище в блоці «контактна інформація») ï [відкрити контакти](див. вище в блоці «контактна інформація»)
Summary
Infrastructure Engineer with 10+ years of experience designing, implementing, administering and troubleshooting enterprise
IT infrastructure across networking, data centers, virtualization, systems administration, network security, monitoring and
backup.
Hands-on experience with Cisco, MikroTik, Fortinet and Check Point, enterprise routing and switching, BGP, OSPF, VLAN,
802.1Q, STP, LACP, VRRP, HSRP, IPsec, IKEv2, WireGuard, GRE, NAT, ACL, VPN, network segmentation and high
availability.
Experienced with VMware vSphere, Dell VxRail, Proxmox, Dell PowerEdge, SAN storage, Linux, Windows Server, Active
Directory, Docker, Zabbix, Grafana, Graylog, Elasticsearch/ELK, Prometheus, Veeam, Avamar and Ansible.
Strong background in infrastructure migration, data center relocation, network modernization, business continuity, disaster
recovery, incident troubleshooting and coordination with telecom providers and technology vendors.

Technical Skills
Networking: Cisco, MikroTik, Fortinet, Check Point, BGP, OSPF, VRRP, HSRP, VLAN, 802.1Q, QinQ, STP, RSTP,
MSTP, LACP, LAN, WAN, Data Center Networking, TCP/IP, IPv4, routing, switching, subnetting, network segmentation,
NAT, ACL, QoS, MTU, MSS
VPN and Network Security: IPsec, IKEv2, WireGuard, GRE, Site-to-Site VPN, Remote Access VPN, firewall
administration, firewall policies, NAT, ACL, network security, security logging
Infrastructure and Virtualization: VMware vSphere, VMware HA, Dell VxRail, Proxmox, Dell PowerEdge, SAN
Storage, virtual machines, compute infrastructure, storage infrastructure, data center infrastructure
Systems: Linux, Ubuntu, RHEL, CentOS, Oracle Linux, Windows Server, Active Directory, DNS, DHCP, Docker, systemd,
Nginx, Apache
Monitoring and Logging: Zabbix, Grafana, Graylog, Elasticsearch, ELK Stack, Prometheus, SNMP, Syslog, NetFlow,
infrastructure monitoring, centralized logging, alerting, observability
Backup and Disaster Recovery: Veeam Backup & Replication, Dell EMC Avamar, backup, recovery, disaster recovery,
business continuity, infrastructure resilience
Automation: Ansible, Bash, PowerShell, infrastructure automation, configuration management, network automation,
operational scripting
Telephony and Contact Center: Avaya DEFINITY, Avaya Communication Manager, Avaya AES, Avaya ESS, Avaya
Contact Center Elite, NICE, Asterisk, FreePBX, SIP

Experience
NASC Oranta Oct. 2013 – Present
Infrastructure Engineer / Deputy Head of IT Support Kyiv Region, Ukraine
– Design, implement, administer and troubleshoot enterprise IT infrastructure across data center, headquarters and branch
offices.
– Design and maintain enterprise network infrastructure based on Cisco and MikroTik platforms, including routing,
switching, VLANs, trunking, STP, LACP, BGP and OSPF.
– Implement network redundancy and high availability using redundant connectivity, VRRP, HSRP and other resilience
mechanisms.
– Design and maintain site-to-site and remote access VPN infrastructure using IPsec, IKEv2 and WireGuard.
– Configure firewall policies, NAT, ACLs, network segmentation and secure connectivity between infrastructure segments.

– Troubleshoot complex network connectivity issues including routing, MTU, MSS, packet fragmentation, VPN and
telecom provider connectivity.
– Coordinate network connectivity, routing and technical requirements with telecommunications providers and external
vendors.
– Administer enterprise virtualization infrastructure based on VMware vSphere, Dell VxRail and Proxmox.
– Administer Dell PowerEdge servers, SAN storage and enterprise compute infrastructure.
– Administer Linux and Windows Server environments, including DNS, DHCP, Active Directory and system services.
– Deploy and maintain Docker-based infrastructure and services.
– Design and operate centralized infrastructure monitoring using Zabbix and Grafana.
– Design and operate centralized logging infrastructure using Graylog and Elasticsearch/ELK.

– Integrate network and server infrastructure with SNMP, Syslog and NetFlow for monitoring, observability and
troubleshooting.
– Implement backup and recovery processes using Veeam Backup & Replication and Dell EMC Avamar.
– Maintain disaster recovery and business continuity processes for critical infrastructure and services.
– Automate infrastructure administration and operational tasks using Ansible, Bash and PowerShell.
– Perform infrastructure troubleshooting, incident analysis, root cause analysis and service recovery.
– Lead infrastructure migration and data center relocation activities involving network, virtualization, storage and provider
connectivity.
– Lead migration of on-premises contact center infrastructure to a cloud-based platform.
– Design and maintain resilient infrastructure for business-critical services with focus on availability and service continuity.

– Coordinate technical activities with vendors, telecom providers and external support teams.
– Develop technical procedures and operational documentation for infrastructure support and maintenance.
Ukrtelecom Jun. 2009 – Sep. 2013
Implementation & Training Engineer Ukraine

– Participated in implementation, testing and validation of telecommunications equipment and services.
– Supported deployment of new telecommunications services into production environments.
– Developed troubleshooting procedures and operational standards for technical support teams.
– Investigated technical issues and supported engineering teams during service deployment and operation.
– Developed technical documentation and troubleshooting procedures.
– Delivered technical training for engineering and contact center personnel.
– Coordinated technical activities related to implementation and support of telecommunications services.

Key Projects
Enterprise Network Modernization | Cisco, MikroTik, BGP, OSPF, VPN, Network Security

– Modernized enterprise network infrastructure across data center, headquarters and branch environments, including
routing, switching, network segmentation, VPN, network security and redundant connectivity.

Data Center Relocation | Cisco, MikroTik, VMware, VxRail, Dell PowerEdge, SAN

– Planned and executed relocation of core infrastructure including network equipment, virtualization platforms, storage
systems and provider connectivity with focus on service continuity and minimal business disruption.

Enterprise Monitoring and Logging Platform | Zabbix, Grafana, Graylog, Elasticsearch, SNMP, Syslog, NetFlow

– Designed and implemented centralized infrastructure monitoring and logging platform for network and server
infrastructure, improving infrastructure visibility, alerting and incident troubleshooting.

Contact Center Infrastructure Migration | Avaya, SIP, VPN, Network Infrastructure

– Led migration of on-premises contact center infrastructure to a cloud-based platform, including infrastructure
integration, network connectivity and redundant architecture.

Backup and Infrastructure Resilience | Veeam, Avamar, VMware, Backup and Recovery

– Implemented backup, recovery and infrastructure resilience processes for business-critical systems and services.

Education
Interregional Academy of Personnel Management
Bachelor’s Degree in Information Technology Ukraine