sam User

I’m a Senior DevOps / Platform Engineer and SRE practitioner with 4+ years of end-to-end infrastructure ownership across multi-account AWS, GCP, and on-premises Linux environments. I specialize in transforming legacy, manually-operated systems into fully automated, GitOps-driven platforms, backed by measurable reliability and cost gains.

At Credgenics, I led a full multi-account AWS IaC migration (Terraform + Terragrunt) from zero coverage, enforcing PR-gated workflows and state architecture for safe concurrent operations and fast reprovisioning. I also rebuilt a 300+ service CI/CD platform—using GitHub Actions with self-hosted ARC runners on ephemeral Kubernetes pods—cutting release-day build time from 4–8 hours to under 1 hour, while integrating security scans, test gates, and ArgoCD for drift-free continuous delivery.

I further strengthen production outcomes through secrets management with HashiCorp Vault, centralized observability (Coralogix, Prometheus, Grafana), and incident management practices that reduce escalation frequency. I’m also experienced in blockchain DevOps, HA infrastructure, event-driven scaling (KEDA), and cost optimization (Kubecost), and I hold AWS SAA-C03 and CKA certifications.