Sergii Rudyka

Senior DevOps with 12+ years of building, securing, and keeping reliable cloud infrastructure for financial services, insurance, and telecom products -- industries where downtime and compliance failures have real business and regulatory consequences. Holds AWS Certified DevOps Engineer - Professional. Hands-on with Terraform, Linux, AWS, Docker, Puppet, and CI/CD pipelines, with a genuine DevSecOps background: secrets governance, vulnerability scanning, compliance automation, and incident response in regulated environments. Led engineering teams at Oracle and Mirantis, delivered infrastructure for AT&T, Telstra, and Fidelity Life Association.- Resolved a Sev1 RabbitMQ outage that was blocking critical insurance business workflows at Fidelity Life -- traced the root cause to a scheduled Nessus agent scan saturating disk I/O, implemented a permanent fix in Puppet fleet-wide, and authored a post-mortem that prevented the same issue across all production servers- Introduced Infisical as the company-wide secrets management platform at Fidelity Life -- designed the RBAC model, automated secret rotation via Terraform, eliminated 40+ duplicate secrets, and cut rotation time; directly unblocked 3 quarterly compliance audits- Automated EBS encryption across 280+ EC2 instances for a compliance deadline at Fidelity Life -- built a snapshot/encrypt/replace pipeline with per-step validation and rollback capability; zero incidents across the entire fleet- Selected for the Tier V Tiger Team at Mirantis -- a small group resolving the hardest OpenStack production failures for AT&T Integrated Cloud; recognized by AT&T senior leadership for solving critical incidents that impacted global cloud operations, each starting with no prior context- Led CI/CD redesign for Telstra hybrid cloud (AWS and private OpenStack) at Mirantis -- restructured Jenkins for parallel microservice deployments on ECS Fargate, cutting weekly deployment windows - Built infrastructure automation from scratch at Braid Financial as the sole DevOps engineer -- delivered a Terraform IaC stack and GitOps release process that cut environment bootstrap for a regulated fintech productTechnical Skills:Terraform, Linux (CentOS/Ubuntu), AWS (ECS Fargate, EC2, ECR, RDS, S3, IAM, VPC, Lambda, CloudWatch, CodeBuild, API Gateway, Cognito), Docker, Puppet, Ansible, Bash, Python, Jenkins, GitLab CI, Bitbucket Pipelines, Snyk, SonarCloud, Infisical, Splunk, Elastic, NGINX, HAProxy, OpenStack, VMware vSphere, MySQL, PostgreSQL,  Kubernetes (in progress), Git, SaltStack, FreeBSD, Azure DevOps, GitHub Actions