arkival.eu

Vadym Pakhomov — Infrastructure Engineer based in Prague, Czech Republic, offering IT infrastructure services to businesses across the EU. With 10+ years in Linux administration, on-premises and hybrid cloud infrastructure, and automation, I help teams run resilient, high-availability systems: designing them, optimizing performance, and supporting migrations, with DevOps practices for scalable, secure infrastructure. Languages: English (B2), Czech (B2), Ukrainian (native) Permanent resident in the Czech Republic (8+ years). Available for B2B, contract or project work, remote or on-site within the EU. Type 'services' to see what I offer, or 'experience', 'skills' and 'education' for background. 'contact' to get in touch.

What I can help you with: • Linux server administration, setup and hardening • Virtualization & migrations (Proxmox, VMware, KVM/libvirt) • Infrastructure automation & IaC (Ansible, Terraform, Bash, Python) • CI/CD pipelines and self-hosted GitLab (runners, registry, backups) • Monitoring & alerting (Prometheus, Grafana, Zabbix) • High availability, clustering, backup & disaster recovery • Networking & security (firewalls, VPNs, VLANs, audits, hardening) Engagements: one-off projects, ongoing support/retainer, or consulting. Get in touch via 'contact'.

• Linux / OS: Debian, Ubuntu, RHEL • Infrastructure & IaC: Terraform, Ansible, Bash, Python • Virtualization: VMware, Proxmox, KVM/libvirt, oVirt • Networking & Security: VLANs, VPNs, routing, firewalls (iptables/nftables, Fail2Ban), audit/logging • CI/CD & Monitoring: GitLab CI, Jenkins, Prometheus, Grafana, Zabbix • Storage & HA: LVM, RAID, DRBD, clustering • Databases & Web: MariaDB, MySQL, PostgreSQL, LAMP/LEMP • Backup & Recovery: automation, validation, disaster recovery • Hardware: HP, Dell, Supermicro, IPMI

Support Engineer | Flowbox | 05/2026 – present Self-hosted GitLab CE (upgrades, backups, users, runner fleet, registry), CI/CD pipelines with hardened runners (Docker, shell, Kubernetes), Linux server administration, automation tooling in Bash/Python, security assessments and host hardening. Freelance Infrastructure Engineer | various SMB clients | 2025 Proxmox VE migrations, Prometheus & Grafana monitoring stacks, Ansible provisioning, Linux/Windows administration, security audits and hardening, automated backup & recovery. Infrastructure Engineer | Daktela | 2022 – 2025 High-availability infrastructure (99.9% uptime), Ansible automation (-60% deployment time), zero-downtime Proxmox migrations, Prometheus/Grafana, Docker workloads, GitLab CI, Terraform IaC, Keycloak/Google Workspace SSO, vendor procurement. Systems Administrator | NDA | 12/2020 – 01/2022 50+ Linux servers (production & staging), Ansible/Bash automation, centralized logging & monitoring, MFA and automated patching, incident response and root-cause analysis. Systems Administrator (freelance) | 2020 Server administration for 5+ clients, MySQL HA replication, Ansible automation, performance troubleshooting. Systems Administrator | ClusterDesign | 2019 – 2020 Physical and virtual server clusters (KVM/libvirt), RAID 0/1/2/5/10, DRBD, OpenVZ, LVM, IPMI, MariaDB and PostgreSQL.

• Computer Academy Krok, Kiev — System and Network Administration (2006–2008) • MTCNA — MikroTik Certified Network Associate (2022) • Cisco CCNA Routing and Switching (2015)