arkival.eu

Vadym Pakhomov – Senior Infrastructure & Systems Engineer (Prague, CZ / Remote EU). I help SMBs and engineering teams build resilient, zero-downtime Linux infrastructure, eliminate hosting overpay, and automate complex workflows. • Experience: 10+ years in bare-metal, hybrid cloud, and Linux virtualization. • Engagement: B2B / Contract / Retainer (EU-wide remote, Prague on-site). • Languages: English (B2), Czech (B2), Ukrainian (Native). Type 'services' to see core offerings, 'experience' for project history, or 'hire' for engagement options.

What I can solve for your business: • Virtualization & Infrastructure Migration ↳ Migrating legacy setups to Proxmox VE, VMware, or bare-metal KVM with 0 downtime. • Infrastructure as Code & Automation ↳ Eliminating manual tasks via Ansible, Terraform, Bash, and Python scripts. • High Availability & Disaster Recovery ↳ Designing DRBD/Ceph clusters, automated offsite backups, and outage failovers. • Observability & Incident Prevention ↳ Setting up zero-noise Prometheus, Grafana, and Zabbix monitoring stacks. • Hardening & Security Audits ↳ Firewalls (nftables), WireGuard mesh networks, access controls, and vulnerability cleanup. Engagements: Fixed-scope projects, monthly retainers, or technical audits. Type 'hire' to start.

Technical Expertise • Core OS: Linux (Debian, RHEL/Rocky, Ubuntu, Arch) • Virtualization & DR: Proxmox VE, VMware ESXi, KVM/libvirt, DRBD, HA Clusters • IaC & Automation: Ansible, Terraform, Python, Bash • Networking & Mesh: VLANs, BGP, WireGuard, nftables/iptables, Hardening • Observability: Prometheus, Grafana, Zabbix, Log aggregation • CI/CD & VCS: GitLab CI/CD, Runners, Self-hosted registries • Hardware & Storage: Dell, HP, Supermicro (IPMI/iDRAC), Ceph, ZFS, LVM, RAID

Track Record & Infrastructure Experience • Support & Infrastructure Engineer | Flowbox (05/2026 – present) ↳ Administration of self-hosted GitLab CE ecosystem (upgrades, backups, user lifecycle, runner fleet). ↳ Hardened CI/CD build environments with isolated Docker and Kubernetes runners. ↳ Linux host security hardening, OS patch management, and automation via Bash and Python. • Independent Infrastructure Consultant & Freelance | SMB Clients (01/2025 – 05/2026) ↳ Zero-downtime virtualization migrations to Proxmox VE and bare-metal KVM. ↳ Deployed unified Prometheus, Grafana, and Zabbix observability stacks with zero-noise alerting. ↳ Automated server provisioning, backup schedules, and offsite disaster recovery validation using Ansible. • Infrastructure Engineer | Daktela (2022 – 2025) ↳ Maintained high-availability core telecom/SaaS infrastructure, guaranteeing 99.9% overall uptime. ↳ Reduced service deployment times by 60% through comprehensive Ansible IaC playbooks and Terraform workflows. ↳ Executed zero-downtime Proxmox node migrations, Keycloak/Google Workspace SSO integrations, and vendor hardware procurement. • Senior Systems Administrator | NDA (12/2020 – 01/2022) ↳ Administered a fleet of 50+ Linux servers (Debian/RHEL) across production and staging environments. ↳ Built centralized syslog/ELK logging, Prometheus monitoring, MFA access controls, and automated patching pipelines. ↳ Led incident response procedures and performed root-cause analysis (RCA) for critical outages. • Systems Administrator (Freelance) | Private Clients (2020) ↳ Multi-client Linux server administration, MySQL HA replication setups, network routing optimization, and automated maintenance. • Systems Administrator | ClusterDesign (2019 – 2020) ↳ Provisioned and managed bare-metal server clusters (KVM/libvirt), IPMI/iDRAC interfaces, and RAID 0/1/2/5/10 / LVM storage arrays. ↳ Maintained high-availability storage pools (DRBD), OpenVZ containers, and production MariaDB/PostgreSQL databases.

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

How We Can Work Together: 1. Fixed-Scope Project ↳ Ideal for migrations, infrastructure setup, or audits. Clear deliverables, timeline, and fixed price. 2. Monthly Retainer / On-Call ↳ Ongoing administration, monitoring, maintenance, and emergency response for a fixed monthly fee. 3. Architecture & Security Consulting ↳ Infrastructure review, optimization strategy, and second-opinion audits. How to start: Email vadym.pakhomov@arkival.eu with a brief note on your current stack and main challenge. Expect a response within 1 business day.

Selected Project Experience & References Due to strict Non-Disclosure Agreements (NDAs) and infrastructure security policies, direct client contact details are kept private. Below are anonymized profiles based on delivered work: • Enterprise Communication & SaaS Platform (Daktela / Czechia) ↳ Scope: High-availability infrastructure maintenance, zero-downtime Proxmox migrations, Ansible IaC, and Keycloak SSO integration. ↳ Impact: Maintained 99.9% uptime and reduced service deployment times by 60%. • B2B SaaS & Tech Provider (Flowbox / EU) ↳ Scope: Management of self-hosted GitLab CE ecosystem, CI/CD runner fleets (Docker/Kubernetes), and OS hardening. ↳ Impact: Streamlined deployment pipelines and secured internal developer tooling. • SMB Multi-Tenant Infrastructure (NDA / Freelance) ↳ Scope: Centralized administration of 50+ Linux servers (production & staging), automated patch management, and incident response. ↳ Impact: Reduced manual maintenance overhead and eliminated alert noise with unified monitoring stacks. • Private / Homelab Infrastructure & DR Audits ↳ Scope: Bare-metal setup, WireGuard VPN mesh topology, Technitium/AdGuard DNS automation, and automated offsite DR backups. References and verification of technical track record are available during B2B onboarding.