Denys

Denys Ozirkovskyi
Lviv, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
Linkedin | GitHub | Instagram

Education
Lviv Polytechnic National University
● Bachelor degree in information systems and networks (2022-2026)
● Cisco IT Essentials 2023
● Artem Hrechanychenko DevOps01

Work Experience
Snapster - Social network startup | January 2023
DevOps Engineer
● I built cloud infrastructure and architecture, in particular on AWS, Hetzner. My proposed use of
two platforms for certain microservice architecture services provided a 60% cost reduction for
certain servers and services with Arm64 architecture
● Configured CI/CD pipelines using Jenkins, GitLab CI and GitHub Actions, achieving a 40%
improvement in deployment frequency and a 25% decrease in deployment failures.
● I deployed software on cloud servers using Docker containerization and Kubernetes clustering. I
was responsible for Docker containerization and Kubernetes clustering.Authored .yaml
configuration files streamlining deployment processes.
● Automated server scaling utilizing Terraform and Ansible, resulting in a 35% decrease in manual
intervention and a 30% improvement in resource utilization efficiency.
● Configured Nginx load balancer and Kong API Gateway
● Performed migration of servers, databases and s3 buckets with rds
● Was responsible for more than 10 servers and was engaged in troubleshooting and bug dealing
● Wrote bash/python scripts to automate routine processes
● Actively communicated with colleagues and the team and coordinated relevant issues

Skills & Interests
Hard skills:
● Cloud: AWS, Hetzner, EC2, EKS, ECS, RDS, Route53, S3, DataSync, ECR
● Containerization & Orchestration: Docker, Docker-Compose, Docker-Swarm, Kubernetes
● Programing & Scripting: BASH, Python, C++, C#, JS, React
● OS: Windows, Linux with ability to work with directories and files, write scripts, SSH connection
and troubleshooting skills, understanding of core process
● CI/CD: Jenkins,Jenkinsfile, GitLab CI, Github Actions,
● Iaac: Terraform, Ansible
● Monitoring: Grafana and Prometheus
● Networking: Understanding of the principle of operation and functions of TCP/IP, DNS, DHCP,
FTP , SSH , HTTP , HTTPS ,ICMP. Knowledge of the seven-level OSI model. Knowledge and
skills in working with Cisco network equipment and technologies
● Source Management and Collaboration: Git , GitHub, GitLab, Kanban,
● Computer engineering: Proficient knowledge in computer structure, encoding and decoding
techniques, and microelectronics device schematics
● Soft skills: Adaptability, Leadership, Communication and Collaboration, Problem solving
Languages: English(Upper-intermediate), Ukrainian(Native), German(basic)
Interests: Music, Guitar, Art, Hiking,Сooking, Gym