Особисті дані приховані

Alexander Chupalov
DevOps Engineer / Linux System Administrator
Mykolaiv, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)

PROFILE
DevOps Engineer with 12+ years of experience in Linux infrastructure and 6+ years in DevOps and containerized environments.
Operated 10+ production Kubernetes clusters comprising 300+ nodes, 3,500+ services, and 5,000+ pods. Worked with Kubernetes,
Docker, Terraform, Ansible, GitLab CI/CD, monitoring, logging, networking, and production web/data services.

CORE SKILLS
Cloud & Kubernetes Kubernetes, kubeadm, Helm, cert-manager, Gateway API, Envoy
Gateway, CSI drivers, AWS, Azure, GCP, Hetzner Cloud
IaC & CI/CD Terraform, Ansible, GitLab, GitLab CI/CD, GitLab Container Registry,
Jenkins, Bitbucket Pipelines, Bash
Observability Prometheus, kube-state-metrics, VictoriaMetrics, Grafana,
Alertmanager, node exporter, Zabbix, ELK/EFK
Linux & Platform Services Ubuntu, Debian, CentOS, Docker, Nginx, Apache, PostgreSQL,
MySQL, Redis, Kafka, Cloudflare, WireGuard

EXPERIENCE
DevOps Engineer | Confidential Product Company (NDA)
Mar 2025 - Present | Remote
- Maintain production Linux and bare-metal infrastructure, 10+ Kubernetes clusters, Docker workloads, and a self-hosted GitLab
cluster on Kubernetes.
- Handle GitLab upgrades, backups, restores, runners, registry, storage, and day-to-day troubleshooting.
- Use Terraform and Ansible for servers, Kubernetes configuration, user and access management, firewall rules, monitoring, and
routine operations.
- Work on Kubernetes upgrades, RBAC, cert-manager, Gateway API and Ingress routing, storage and PVC issues, autoscaling,
scheduling, and incidents.
- Maintain Prometheus, VictoriaMetrics, Grafana, Zabbix, and ELK/EFK logging, dashboards, alert rules, Telegram alerts, and incident
investigations.
- Support production PostgreSQL, MySQL, Redis, Kafka, S3-backed storage, Cloudflare, DNS, and access controls; tuned
PostgreSQL and MySQL and built Redis clusters.
System Administrator / DevOps Engineer | RedCat IT Outsourcing
Oct 2019 - Mar 2025 | Remote
- Operated production web/mail servers, bare-metal/Linux infrastructure, DNS, VPN, access controls, and firewalls for customer
environments.
- Containerized applications and maintained Docker, Docker Compose, Docker Swarm, and Kubernetes environments.
- Created and supported 100+ CI/CD pipelines using GitLab CI/CD, Jenkins, and Bitbucket Pipelines.
- Built ELK/EFK logging stacks from scratch and maintained monitoring/alerting with Zabbix, Grafana, and Prometheus.
System Administrator | Nexteum
May 2018 - Oct 2019 | Ukraine
- Maintained and modernized company IT infrastructure across Linux and Windows environments.
- Administered Active Directory Domain Controller, users, OUs, and GPO policies.
- Supported server, network, and application reliability for internal teams.
System Administrator | Outsource Services LLC
Oct 2017 - Apr 2018 | Mykolaiv region, Ukraine
- Assembled, configured, and maintained PCs, peripherals, and user workstations.
- Troubleshot local networks, hardware, operating systems, business software, and end-user infrastructure.
Linux System Administrator | GeeksForLess Inc.
Apr 2014 - Sep 2017 | Mykolaiv region, Ukraine
- Configured and maintained Linux server clusters and resolved availability and performance issues.
- Supported high-load web hosting environments, web servers, databases, virtualization, and network troubleshooting.

PROJECTS
Self-Managed Kubernetes Platform on Hetzner Cloud
- Designed and operated a cost-efficient self-managed Kubernetes platform using kubeadm, Terraform, Ansible, Helm, and GitLab
CI/CD.
- Implemented load balancing, Gateway API/Envoy Gateway routing, cert-manager TLS, Cloudflare DNS/R2, S3-compatible Terraform
backend, and secure public/private service exposure.
- Implemented infrastructure monitoring, alerting, and Telegram notifications using VictoriaMetrics, Grafana, kube-state-metrics, node
exporter, and Alertmanager.

EDUCATION
Admiral Makarov National University of Shipbuilding
Software Engineering, Automated Systems Software | 2009 - 2013

LANGUAGES
English - Intermediate