Denis A.

Principal Site Reliability Engineer @ANNA Money

London, GB

Built and led the SRE team from scratch; owned hiring, incident management, and technical roadmap• Architected a scalable anti-DDoS and WAF solution processing 200M+ monthly requests; reduced internal load balancer traffic by over 90%• Migrated Kubernetes from on-prem (Kubespray) to GKE, enabling full multi-region rollout in minutes via IaC• Created a zero-touch VPN + IAM provisioning system, which led to building and maintaining the official OpenVPN Terraform provider• Introduced service mesh (Linkerd) and GitOps (ArgoCD), improving observability and reducing incident MTTR• Automated access management for joiners/leavers across all platforms using Terraform-based IAM workflows• Cut monthly cloud spending via SaaS audits and vendor negotiations; drove continuous cost optimisation.• Led compliance effort to achieve PCI-DSS and ISO 27001 certification• Owned 24/7 incident lifecycle: on-call, runbooks, postmortems, and SLO-based alerting

ITMO University

Programming Engineer, Computer Science