Dawid Trzebiatowski

Designed air-gapped installation pipelines for secure container delivery to isolated environments. Configured APISIX API gateway with Keycloak for RBAC and OIDC authentication. Deployed RKE clusters with Longhorn storage and implemented ArgoCD-based GitOps workflows. Introduced OPA validation for Kustomize specs and External Secrets Operator for TLS certificate management. Built Terraform and Ansible integrations for Kentik Portal. Migrated CI from Jenkins to CircleCI on GCP, deployed CD via Spinnaker and Harness.io with automatic Helm charts testing. Maintained SDN CI/CD infrastructure with Jenkins and Linux KVM.

Migrated monitoring from Nagios to Zabbix. Maintained HA applications in client infrastructure. Managed internal systems (Citrix Xen, Debian) and delivered CI tools with Jenkins.

Maintained mail servers and managed approximately 5,500 user mailboxes. Prepared and maintained software packages for the mail system.

Monitored servers and services using Zabbix. Developed additional monitoring functionality with BASH and Perl scripts.

Built internal tools and managed servers across multiple roles. Deployed Zimbra mail system across two geographically distant locations. Implemented Polycom IP phone provisioning and dispatch console based on Gentoo Linux.

System administration at local insurance company — mail systems and web infrastructure management using Terraform and AWS. DevOps engineering at toucan.events (2020–2024) — designed and managed development, staging, and production environments in AWS using Terraform with rolling upgrades and reusable modules.

Managed campus network servers (Debian, CentOS). Administered DHCP, SQUID, and PXE services. Automated configuration with Puppet. Migrated virtualization from XEN to KVM and mail system from Postfix to Zimbra. Configured network switches (VLANs, DHCP snooping).