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Dmytro Berezhnyi
Location: Odesa, Ukraine
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SUMMARY
Technical Support Engineer with hands-on experience in Linux systems, web server administration,
networking, monitoring, and troubleshooting. Experienced with Nginx, Apache, DNS, SSL/TLS, log analysis,
and supporting web services and hosting environments.

Strong knowledge of Kubernetes, supported by the CKA (Certified Kubernetes Administrator) certification
and DevOps training, with practical experience using Docker. Practical experience with Zabbix and
Prometheus for infrastructure monitoring.

CERTIFICATIONS
CKA: Certified Kubernetes Administrator – The Linux Foundation
Issued: Apr 2026 · Expires: Apr 2028
Credential ID: LF-yz6ws5nr1g
DevOps Course Graduate – Hillel IT School
Issued: 2025
Credential ID: 25803977

TECHNICAL SKILLS
Linux & System Administration: Linux (Ubuntu, Debian, RHEL-based systems), system
troubleshooting, log analysis
Monitoring & Observability: Zabbix, Prometheus, Grafana (basic), ELK Stack (basic)
Networking: TCP/IP, OSI Model, DNS, DHCP, IP addressing, Routing, NAT/PAT, Firewalls
Web & Hosting: Nginx, Apache HTTP Server, Web hosting administration, SSL/TLS certificates
Containers & Orchestration: Docker, Kubernetes
Programming & Automation: Python, Bash
Version Control & CI/CD: Git, GitHub, GitLab CI/CD (basic)
Databases: PostgreSQL basics

PROFESSIONAL EXPERIENCE
Technical Support Engineer (Web Server & Platform Support)

Callstar | 06/2022 – 04/2026
 Provided technical support, log analysis, and incident resolution for an e-commerce web platform.
Configured and optimized Nginx and Apache web servers to maintain high availability and
performance.
Assisted clients with hosting setups, domain routing, DNS configurations.

Third Officer / Deck Cadet

V.Ships Crew | 2016 – 2022

Third Officer (2019 – 2022): Responsible for bridge watchkeeping, safe navigation, updating
navigational charts/publications, and maintaining life-saving and firefighting appliances. Managed
technical documentation and port clearance procedures.
Deck Cadet (2016 - 2017): Assisted in navigation, vessel maintenance, and safety inspections under
senior officers' supervision.

Senior Glo Expert

British American Tobacco | 09/2018 – 12/2018

Conducted product presentations, managed B2C sales, and processed customer databases (cold and
warm leads).

PROJECTS & PRACTICAL EXPERIENCE
DevOps & Infrastructure Projects

Kubernetes Lab Administration: Designed, deployed, and configured multi-node Kubernetes
clusters during CKA preparation. Managed application deployment, network policies,
troubleshooting, and cluster security.
Monitoring & Observability: Configured Zabbix hosts, agents, templates, triggers, and monitoring
checks. Worked with Prometheus for metrics collection and querying. Gained basic hands-on
experience with Grafana and the ELK Stack.
Automation & Scripting: Developed Bash and Python scripts to streamline system administration
tasks, log parsing, and environment health checks.

EDUCATION
Bachelor’s Degree in Sea and River Transport
Specialization: Navigation
National University "Odessa Maritime Academy"
Graduated: 2017

LANGUAGES
English: Intermediate (B1)
Ukrainian: Native
Russian: Native