Hello, I'm Hennadii.

DevOps Engineer building reliable infrastructure for high-load systems.

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About me

DevOps Engineer • Kyiv, Ukraine

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Hennadii Rumyantsev

DevOps Engineer

DevOps Engineer with 3+ years of experience in infrastructure administration and process automation. I work with high-load systems, Kubernetes/OpenShift clusters, and CI/CD pipelines.

My developer background is mostly Python (plus Bash/PowerShell) — I use it to automate routine tasks and build small internal tools.

Core skills

Kubernetes / OpenShift, Docker
CI/CD: Jenkins, GitLab CI (ArgoCD — in progress)
Monitoring: Prometheus, Grafana, Zabbix
Linux + Windows Server administration

Language skills

UkrainianC1

EnglishB1

RussianB2

Work experience

What I did and what impact it had.

DevOps Engineer

Ukrainian Special Systems • 07.2024 — present

KubernetesOpenShiftJenkinsGitLab CIPrometheusGrafana

Administer Kubernetes/OpenShift clusters in production with 99.9% SLA and 10,000+ daily active users.
Configure and optimize CI/CD pipelines in Jenkins; reduced deployment time by ~15%.
Implement monitoring and alerting (Prometheus, Grafana, Zabbix) for faster incident response.
Automate routine tasks with Python and Bash scripts.

System Administrator

SystemGroup Ukraine • 02.2024 — 07.2024

LinuxWindowsDockerPOSPowerShell

Deployed fiscal/POS software across Linux, Windows, and Docker for retail clients.
Automated deployments with Bash and PowerShell; handled 15–20 requests/day with ~95% resolution rate.
Integrated and troubleshot API issues for Java-based fiscal software.

System Administrator

Kyiv Professional College of Communications • 02.2021 — 01.2024

Windows ServerLinuxAnsibleProxmoxNetworking

Administered IT infrastructure for 200+ users (Linux + Windows Server).
Built thin client infrastructure and created a Proxmox lab for cybersecurity scenario testing.
Automated routine tasks with Ansible playbooks for 10+ servers and supported HelpDesk operations.