Александр

Serheiev Oleksandr
Location: Dnipro, Ukraine
Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
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SUMMARY

Senior DevOps Engineer with more than 6 years commercial experience in DevOps.
Expert in Kubernetes 8+ years in production. I’am experienced in migration projects, build
architecture from scratch, configuration, zero downtime deployment, support and
maintenance of different applications and environments. I have 6+ production experience in
kubernetes, helms. Good hands-on skills in cloud services, troubleshooting skills, CI/CD and
containerization. Have experience in creating CI/CD pipeline and automating. Also I am able
to find quickly suitable solutions in specific cases and situations. Good communication skills,
comfortable to interact with both technical and non-technical audience. I am a highly
motivated and flexible team player, with good self-management skills and also, open for
opportunities and able to learn new technologies quickly.

SKILLS

Cloud Platforms: GCP, AWS - expert in clouds
Container Management: Kubernetes, GKE, EKS, ECS, Docker, Kops, Openshift
GitOps: ArgoCD
Infrastructure as Code: Terraform, Ansible, Parker
Service Discovery: Vault, Consul
Programing languages: Bash, Nodejs, Python
Version Control: Github, Gitlab, Bitbucket
CI/CD Tools: GitlabCI, GithubCI, Jenkins, CircleCI, Travis
Databases: CLoudSQL, MySQL, Postgresql, Mongodb, Mariadb
Web Servers: Nginx, Apache, IIS, Tomcat
Platforms: Debian based, Alpine, Centos, Windows Servers, MacOS
Virtualization: Vmware, VirtualBox, Hyper-V
Monitoring: Prometheus stack, Loki stack, ELK, Datadog. CloudWatch, Sentry
Agile Scrum: Jira, Confluence, Redmine, Trello
Networking and Security: Firewalls, VPNs, OpenVPN, Proxy, DNS, SSL/TLS, SSH

EDUCATION

●​ 1998 - 2006, Master’s in Hydraulic and Pneumatic Machines, Energetic
Machines, Kharkiv Polytechnical University (KPI).
●​ 2018, GCP architecture (Coursera)
EXPERIENCE

08/2024 - Senior Devops Engineer, Corelogic (Cotality)
08/2025
Business development of highly secured applicatoins

Responsibilities:
●​ cicd-build engineer in migration team
●​ create pipelines on Jenkins, deploy applications
●​ close working with app teams, cicd-support team, security team, architects
●​ troubleshooting applications in dev uat, dark prod, and deploy it
●​ support app teams

Achievements:
●​ Migrated to another account AWS/GCP (Anthos/EC2) applications from AWS
ECS/EC2
●​ migrated pipelines from gitlab to Jenkins
●​ Migrated all applications ( Java, DotNet, React, Ruby. Python), it was huge
migration more than 100+ applications
Technologies:
●​ GCP – Anthos, S3, EC2, ELB/ALB so on

●​ AWS EKS, S3, IAM, EC2, Elasticashe
●​ Terraform, Docker, Docker-compose
●​ Kibana/apm
●​ CI – GitlabCI, Jenkins

01/2022 - 04.2023 (part time) Senior Devops Engineer, Skylab
07/2024
Business development of highly secured blockchain and solutions

Responsibilities:
●​ Optimization infrastructure, performance tune and optimization
●​ Manage infrastructure
●​ Pipelines implementation and optimization
●​ Writing Helm deploys
●​ Support dev team and teach them
●​ Application and infrastructure troubleshooting
 ●​ Cost optimization
●​ Migrating, refactoring, improving
●​ Creation support materials artifacts, demo and sharing among multiple
development teams
●​ Meetings and solving problems to help a dev team

Achievements:
●​ Migrated to GCP and improved security in all layers
●​ Implement GitOps with ArgoCD
●​ Migrated all deployments from yaml to helm
●​ Implement Monitoring and logging systems
●​ Implement Sentry logging
Technologies:
●​ GCP –PostgreSQL, S3,, EC2, ELB/ALB so on
●​ K8S – GKE, Helm, Helmfiles
●​ Nats, Minio, Sentry, Terraform, Docker, Docker-compose
●​ Prometheus/Grafana, Loki, SSO
●​ CI – GtihubCI, GitlabCI

06.2022 - 04.2023 Senior Devops Engineer, Macys

Responsibilities:

●​ CI/CD and Infrastructure engineer
●​ Manage GCP GKE infrastructure
●​ Pipelines implementation and optimization
●​ Writing Helm deploys
●​ Support dev team and teach them
●​ Application and infrastructure troubleshooting
●​ Migrating, refactoring, improving
●​ Creation support materials artifacts, demo and sharing among multiple
development teams
●​ I was as Mentor for junior devops in Team

Achievements:
●​ Huge Migration Monitoring from tanka to helm about 100+ clusters
●​ refactoring dev and prod pipelines and decrease run time for all project

Technologies:
 ●​ GCP - GKE, S3, LB, Domains and so on
●​ K8S – GKE, Helms, Tanka
●​ Terraform, Python
●​ Jenkins

04/2021 - 10.2021 Senior Devops Engineer, Nike

Responsibilities:

●​ CI/CD and Infrastructure engineer
●​ Manage infrastructure
●​ Pipelines implementation and optimization
●​ Writing Helm deploys
●​ Support dev team and teach them
●​ Application and infrastructure troubleshooting
●​ Migrating, refactoring, improving
●​ Creation support materials artifacts, demo and sharing among multiple
development teams
●​ Meetings and solving problems to help a dev team

Achievements:
●​ wrote IOS brew devops packages
●​ Migrated helm v2 to helm v3 and support all teams in migrations
●​ Implement code coverage in pipelines and badges on bitbucket
●​
Technologies:
●​ AWS - EKS, Aurora, S3 and so on
●​ K8S – EKS, Helms
●​ Terraform, Python
●​ Jenkins

02/2020 - 12/2021, Senior DevOps Engineer, Medstar (Skylab)

Huge integrated medical care solution with full range of medical tool and
communication layers

Responsibilities:
●​ Optimization infrastructure, performance tune and optimization
●​ Setup and maintenance of log stack ELK, metrics stack Prometheus/Grafana,
SSO for K8S, and so on
 ●​ Pipelines implementation
●​ Extension of environments by new components and tools: writing helms,
adding to CI/CD, updating infra
●​ Application and infrastructure troubleshooting
●​ Migrating, refactoring, improving
●​ Release engineering
●​ Creation support materials artifacts, demo and sharing among multiple
development teams
●​ Solving issues with security, backups, errors, and so on
●​ Reviewing devs code (helm configs in DevOps repo )
●​ Meetings and solving problems to help a dev team

Achievements:
●​ Being the 1st standalone DevOps engineer on the project build infrastructure,
processes from scratch at my own
●​ Implemented entire CI\CD solution from scratch and shared the process of
usage among multiple project teams
●​ Held multiple Architecture and Solution Design sessions to proof the solution
●​ After implementation was done obtained a very high evaluation of work from
both engineering team and management
Technologies:
●​ AWS – ASQ, RDS PostgreSQL, S3, R53, SG, EC2, ELB/ALB so on
●​ K8S – KOPS, AWS, Helm, Helmfiles, Chamber (KMS secrets)
●​ Nats, Minio, Sentry, Terraform, Ansible, Parker, Docker, Docker-compose
●​ Prometheus/Grafana, ELK, SSO
●​ CI – CircleCI, Jenkins

04.2019 – 11.2019, DevOps, ItSVit

Business development of highly secured blockchain solutions in financial area
Responsibilities:
●​ Updating blockchains - dockerize and deploy it to K8S
●​ Administering and improving project and security on K8S/AWS/OVH
●​ Migrating the entire project from AWS to OVH
●​ Writing helms, CI/CD pipelines
●​ Troubleshooting
●​ Writing docs

Technologies:
●​ AWS – ASG, RDS, S3, R53, SG, EC2, ELB/ALB so on
●​ K8S – KOPS, AWS, Helm, Helmfiles, Chamber (KMS secrets)
●​ RabbitMQ, Sentry, Terraform, Ansible, Packer, Docker, Docker-compose
 ●​ Prometheus/grafana, ELK, SSO
●​ CI – Travis
●​ Security: Falco on K8S, monitoring, and troubleshooting

Achievement:
●​ Built backup system from the scratch
●​ Executed technological transformation via migration from AWS cluster to OVH
●​ Solved multiple issues in current CI\CD implementation with the minimum
available timeframes

08.2018 – 02.2019, DevOps, Soft Serve

SDO platform for testing projects
Responsibilities:
●​ Set up the project from scratch on VMI Baremetal K8S
●​ Writing microservices in Nodejs
●​ Pipelines implementation
●​ Writing helm charts, deployment for the ongoing business

Technologies: Bare-metal K8S, NSQ, Helms, Prometheus/grafana, ELK, GitlabCI

06.2016 – 07.2018, DevOps, Nitralabs

Automation deployment for the stack of over 20 projects lot of directions UNIX stack,
windows stack,
70% of projects were based on UNIX – Digital Ocean/Hetzner/another servers/ with
docker/docker-compose

Responsibilities:
●​ Dockerizing applications
●​ Stress-testing
●​ Deploying apps to k8s on GCP
●​ Migration of pipelines
●​ Writing tasks and scripts on Nodejs, bash.
●​ Creating pipelines CircleCI, Codeship, GitlabCI
●​ Administration servers

Technologies:
●​ Monitoring: Logentries/Newrelic/Zabbix, Monitorup
●​ Databases: MongoDB/MySQL/MSSQL/PostgreSQL
●​ Web: Nginx/Apache/IIS
●​ App: PHP/Java/JS/WordPress/Joomla
●​ Backups: Google Cloud –buckets/other UNIX servers/AWS-S3
●​ Tickets: Redmine
●​ DNS: Cloudflare