Дмитро

Dmytro Hryvnak
DevOps Engineer
[open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · Lviv, Ukraine · Telegram · LinkedIn · GitLab · GitHub

SUMMARY
DevOps engineer with 4+ years of Linux and Windows Server administration (AD, GPO, RDP) for offices of up to ~108
workstations. Runs Kubernetes with Helm and ArgoCD, builds CI/CD in GitLab CI and Jenkins, and configures servers with
Ansible. Currently the only DevOps on a charity platform: cut CI failures by ~20% after finding runner memory limits in Grafana.
Automates routine work with Python, Bash and PowerShell; production bots save 2+ hours a day.

SKILLS
Cloud & IaC: Ansible, Terraform, AWS (EC2, VPC, IAM, S3, EKS)
Containers & CI/CD: Kubernetes, ArgoCD, Jenkins, GitLab CI, GitHub Actions, Helm, Docker
Monitoring & secrets: Prometheus, Grafana, Alertmanager, VictoriaMetrics, VictoriaLogs, HashiCorp Vault
Linux & networking: Ubuntu, Windows Server, Active Directory, GPO, DNS, WireGuard, OpenVPN, MikroTik
Automation & virtualization: Bash, Python, PowerShell, Git; Proxmox, Vagrant, VirtualBox
AI tools: Claude, Claude Code
Languages: Ukrainian — Native, English — B2 Upper-Intermediate

EXPERIENCE
DevOps Engineer (Volunteer) · Charity Lab — Remote · Sep 2026 – Present
- Cut CI failures by ~20%: Grafana showed the runner node running out of RAM; set job limits and runner concurrency
- Unblocked 4 frontend developers after a 2-day CORS outage: traced the root cause across the config repo and ASP.NET
Core backend, allowed wildcard subdomains on dev only, rolled out via ArgoCD
- Patched a FusionAuth vulnerability: upgraded the Helm release, fixed Vault secrets wiring after breaking changes
- Found the root cause of a recurring service failure with VictoriaLogs and Grafana; after the fix it has not recurred
- Added liveness, readiness and startup probes to 18 Kubernetes services; connected health checks for 6 previously invisible
services on the status dashboard
IT Infrastructure Engineer (Freelance) — Lviv · Aug 2026 – Oct 2026
- Built the network for an 11-PC gaming club on MikroTik RB5009; bypassed ISP throttling with a router-level WireGuard tunnel
(~100 KB/s to ~60 MB/s)
- Built and launched a business website with hosting, domain email and a Telegram bot that routes client leads to managers

System Administrator · BNB Solution — Lviv · Jul 2022 – Jul 2026
- Administered 3 offices (~50, ~50 and ~8 workstations) in an IT team that grew from 1 to 3 admins; built out each office
with the team: rack, cabling, Wi-Fi, CCTV, access control
- Automated workstation setup with PowerShell (20 apps, unattended), provisioning 3 PCs in parallel for ~3x throughput
- Built 4 production Python bots; phone-number validation via API cut manual checking time by ~80% (~45 to ~9 min/day)
- Automated telephony database reconciliation (~1 h to ~5 min) and video-call booking, eliminating double-bookings
- Deployed Rocket.Chat in Docker on Proxmox as the self-hosted team chat for ~100 users
- Configured FortiGate, then hardened MikroTik routers with WireGuard tunnels; maintained a Linux VPN gateway on AWS
EC2
System Administrator · Edem / Emily Resort — Lviv region · Jan 2022 – Jul 2022
- Administered 50+ workstations, POS terminals and access control for ~50 Active Directory users
- Restored remote access for accounting after a Windows update broke the VPN on all clients: migrated to OpenVPN instead
of rolling back updates on every machine

PROJECTS
GitOps on AWS EKS
EKS provisioned with Terraform; ArgoCD auto-syncs every commit, with zero manual deployments
AWS Infrastructure with Terraform & Ansible
VPC and Jenkins CI recreated entirely from code; spot workers cut compute cost
Monitoring Stack
Telegram alerts on low disk, high CPU and down targets flag failures before users notice
Kubernetes + GitLab CI
Every push builds and deploys a Python + MySQL app; data survives pod restarts via PV/PVC

EDUCATION
Dan IT — DevOps Engineering Program, 350 hours — Feb 2024 – May 2026
West Ukrainian National University — Master's Degree, Social Work — 2024 – 2025
Lviv Polytechnic National University — Bachelor's Degree, Computer Engineering — 2020 – 2024