Serhii Mykhailov

DevOps Engineer

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Summary

DevOps Engineer with 5+ years building cloud infrastructure, backed by 10+ years as a System Administrator in server infrastructure, datacenter operations, and networking. Specialized in Infrastructure as Code, Configuration as Code, CI/CD, and AWS. Strong at problem analysis, automation, and staying composed during critical incidents.

Core Skills

• Cloud: AWS (EC2, Lambda, ECS, EKS, S3, EBS, RDS, DMS, ELB, Route 53, CloudFront, WAF, CloudWatch), hybrid VMware ESXi + AWS
• IaC: Terraform, Pulumi, CloudFormation
• CaC: Ansible, AWS SSM
• CI/CD: Jenkins, GitHub Actions, AWS CodePipeline, AWS CodeBuild, ArgoCD
• Containers & Orchestration: Docker, LXC, Kubernetes (EKS), Karpenter, Helm
• Security & Compliance: AWS WAF, GuardDuty, Security Hub, tflint, Checkov, ScoutSuite
• Scripting: Bash, Python, PowerShell, Groovy, SQL
• Monitoring: CloudWatch, New Relic, Grafana, Zabbix, OpenSearch
• Databases: MySQL, MSSQL, RDS Aurora
• OS: Linux (Debian, Ubuntu, Alpine, Amazon Linux), Windows Server

Experience

DevOps Engineer — Automat-IT

Jan 2021 – Present

Optimize and streamline development and deployment processes for multiple customers across varied stacks, improving scalability, fault tolerance, and reliability.

• Led multiple database migrations from on-prem and Azure (MySQL/MSSQL) to AWS RDS using AWS DMS and third-party tools.
• Built multiple reusable Terraform modules for services such as AWS OpenSearch and WAF.
• Automated multi-account Terraform security scanning with tflint, Checkov, and ScoutSuite.
• Migrated large data volumes from on-prem VMs to hundreds of S3 buckets with continuous replication, replacing on-prem FTP services.
• Designed and supported cloud infrastructure across major providers, with a primary focus on AWS.
• Migrated infrastructure from Pulumi to Terraform.
• Built CfCT (Customizations for AWS Control Tower) pipelines.
• Created CI/CD pipelines on Jenkins, GitHub Actions, and AWS CodePipeline/CodeBuild.

System Administrator — LIDER-TREYD LTD

2015 – 2021

• Managed Hyper-V and Citrix XEN hypervisors with Windows Server guests (AD, GPO, DNS, DHCP, IIS, MSSQL).
• Administered Linux services (MySQL, Apache, Samba, ownCloud, Docker, Zabbix).
• Configured networking and security: firewalls, NAT, OpenVPN, IPsec site-to-site VPN, load balancing, WiFi.
• Ran backups, replication, monitoring, and helpdesk; assembled bare-metal servers.

System Administrator — Epicall

2014 – 2015

• Managed XenServer 6.5 hypervisor and CentOS VMs.
• Configured customer server tunnels and the internal LAN/WiFi.

System Administrator — DVBTD

2010 – 2014

• Maintained Debian LAMP servers (Samba, FTP, OpenVPN, CUPS).
• Supported workstations, company website, LAN, and WiFi.

Education and certification details

• AWS Certified SysOps Administrator – Associate (SOA-C02), 2022
• AWS Certified Cloud Practitioner (CLF-C01), 2021
• AWS Partner: Technical Accredited - AWS, 2021
• AWS Partner: Accreditation (Business) - AWS, 2021
• DevOps Basics — Zone3000, 2020
• Donetsk National University of Economics and Trade - Mechanical engineering, 2010 – 2014

Languages

• English — Intermediate
• Ukrainian — Native
• Russian — Native