- Managing infrastructure in various cloud platforms (AWS,GCP) as code (Terraform, Terragrunt, CrossPlane)- Migration of existing CD to ArgoCD - Managing CI using GitlabCI- Kubernetes clusters (GKE): managing about 50 backends and 20-30 frontend apps using Helm/Kustomize- Monitoring and logging infrastructure and services (Prometheus, Grafana, Alertmanager, Loki, Mimir, Tempo, Grafana Alloy) - was responsible for migration from DadaDog- Configuring and maintaining other components: Kafka Strimzi Operator; KafkaConnect, KafkaMirrorMaker, SchemaRegistry, Kafka-UI/Kafbat-UI; Hashicorp Vault; Postgres - Stackgres, Crunchy; ArgoCD, ArgoWorkflows- Data team support with various tools like, Spark Operator, Airflow, Trino etc.; - Automation routines with scripting (Bash, Python)

- Managing infrastructure in various cloud platforms (AWS,GCP, Hetzner) as code (Terraform, Terragrunt, Ansible)- Delivering code by Jenkins, GitlabCI, etc.- Building and maintaining container orchestration platforms (Kubernetes: EKS,GKE, k3s, kubespray)- Monitoring and logging infrastructure and services (Prometheus, Grafana, Alertmanager, Loki, OpenSearch, fluentd, logstash, promtail)- Configuring and maintaining other components (Kafka: AWS MSK, strimzi; Hashicorp Vault, Sentry, SonarQube etc)- Deployment and maintenance of Mesos/Marathon clusters, Apache Spark clusters, HDFS- Automation routines with scripting (Bash, Python)

Lead Operations teamSupervise the daily working of engineersWork with Engineering and Customer Support closely on issues escalationsCo-ordinate with overseas teamProactive in handling issues for priority Incidents and ensuring resolution in timely mannerSupport all Service Infrastructure systems and servicesEvaluate or develop new tools to better manage the Service InfrastructureOversees the work of junior engineer to ensure that system requirements have been properly implemented and procedures carefully followed.Train other new team members as neededProvide ideas for the development of automated tools which enhances the capability of the engineersUpdate and maintain training material, systems documentation and policy and procedures manuals.

Network design, writing technical specifications of the project WIFI BAR, selection of equipment and technology to meet the challenges of the project. Drawing up specifications for equipment with the existing network and to purchase additional equipment for the specification and requirement of investors. Design, construction and implementation of the network architecture. Optimization of network stations with weak transmission channels.The purpose of the project - the construction of a distributed network of HotSpot Wi-Fi in Kiev and the major cities of Ukraine. The basis of the decision was made to use the equipment Cisco (Express Pod for DC, Cisco ISR 3945E as the primary VPN Concentrator, access points 2600/1600 series and 800 series routers by the branch routers)The network is built on the protocol Flex Connect with local switching and web authentication.Design, implement and support of WIFI Solutions on different Exhibitions and Conferences. Part of network is build on Aruba Networks instant APs (actually IAP-155 and IAP-103)

(2 years 1 month) Advanced Telecommunications LTD (Kiev Head Office) Main responsibilities Drafting equipment specifications for new projects.Drafting equipment specifications for the expansion and optimization of existing projects.Setup and configuration of the equipment when you start a new project and tailor the new equipment for the expansion of existing projects.The construction, startup, commissioning and maintenance of the corporate network includes technology WAN / LAN (Cisco ISR 3945, Cisco ISR 2921, Cisco Catalyst 3560G, Cisco Catalyst 2960S), WI-FI (Cisco WLC 4400, 5500 Series, LWAP 1100 Series), Unified Communications (VoIP – CUCM 7.1.5, 8.0.x, 8.5.x, 8.6.x; Video Conferencing Systems – CTS 1300-65, CTS 3210, IPVC 3515, Cisco Telepresence Multipoint Switch), Network Security (Cisco IPS 4600 Series, Cisco ASA5550, Cisco ASA5520+ AIP SSM Web Security Module, Ironport S160, Ironport C160), VPN (Cisco Annyconnect, IPSec), Virtualization Techhologies based on VMware ESXi 4.0-5.0 on Dell Poweredge M710 Blade Chassis with iSCSI storages Dell MD3200i. Construction, installation and configuration of enterprise-network resources (mail - postfix, dovecot, Ironport; Webmail; DNS; HTTP; HTTPS; jabber; DHCP, etc.)

(11 months) Premium Solutions Systems (Tashkent Head Office, Uzbekistan) Main responsibilities:Drafting equipment specifications for new projects.Drafting equipment specifications for the expansion and optimization of existing projects.Setup and configuration of the equipment when you start a new project and tailor the new equipment for the expansion of existing projects.The construction, startup, commissioning and maintenance of the corporate network includes technology WAN / LAN (Cisco ISR 3845, Cisco Catalyst 2960/2960G, Cisco Express 500), WI-FI (Cisco 2100 Series), Unified Communications (Cisco Unified Communications Manager 7.1.3), Network Security (Cisco ASA 5510), VPN (IPSec). Construction, installation and configuration of enterprise-network resources (mail - postfix, dovecot, Ironport; Webmail; DNS; HTTP; HTTPS; jabber; DHCP, etc.)

(2 years 6 months) Freenet LTD (Kyiv Head Office) Main responsibilities:Implemented 24/7 monitoring and notification services. Created DMZ infrastructure based on Cisco Catalyst 4928 switches. Responsible for monitoring, troubleshooting, configuring, and deploying network solutions.Managed web servers and databases backups, router and switch configurations. Implemented virtualization services (WEB, Email, DNS, DHCP, IPTV, FTP, TFTP, MRTG and monitoring tools).Installed and configured variety of LAN switches, LAN/WAN routers, gateways, wireless devices resulting in reliable and manageable data transport networks. Implemented firewalling, created and enforced security policies, Access Control Lists resulting in secured networks. Supported customer base with issue solutions (Level 1 support).

Implemented 24/7 monitoring and notification services. Created DMZ infrastructure based on Cisco Catalyst 4928 switches. Responsible for monitoring, troubleshooting, configuring, and deploying network solutions.Managed web servers and databases backups, router and switch configurations. Implemented virtualization services (WEB, Email, DNS, DHCP, IPTV, FTP, TFTP, MRTG and monitoring tools).Installed and configured variety of LAN switches, LAN/WAN routers, gateways, wireless devices resulting in reliable and manageable data transport networks. Implemented firewalling, created and enforced security policies, Access Control Lists resulting in secured networks. Supported customer base with issue solutions (Level 1 support).

(2 years 3 months) Leman LTD (Kyiv Office, Ukraine) Main responsibilities: Education equipment maintenance: LAN setup and maintenance; Telecommunication measuring equipment testing (Spectrum and Network analyzers); Education Software installing, maintenance and troubleshooting.