Configuration, management, monitoring, and backup of infrastructure. Automation of services deployment.

Bare-metal deployment: Linux (Debian, Ubuntu, CentOS, Fedora), FreeBSD, pfSense;
Building and maintaining:
- Virtualization system: Proxmox, oVirt.
- Monitoring system: Prometheus, Grafana, LibreNMS, Alertmanager, JiraAlert,
Elastalert, write custom exporter, Zabbix;
- Backup system: Veeam, Restic, Duplicity, Bacula;
- HA Web environment: Nginx, HAProxy, PHP-fpm;
- Audit and logging system: ELK, rsyslog, Wazuh;
- Apache Kafka;
- Slurm Workload Manager;
- DMZ work environment;
- AIM system: LDAP, FreeIPA;
- VCS: Git, GitLab, Bitbucket;
- CI/CD: Jenkins, Gitlab-CI;
- Mail system: Kerio connect, iRedMail;
- Other systems: Gluster, Ceph, Hashicorp Vault and Consul, Seafile, Onlyoffice, Jira, Confluence.
Configuration management: write state for configuring new host and administration
existing infrastructure with SaltStack and Terraform;