Freelancer | Kubernetes Expert (Kubestronaut) | Site Reliability Engineer

8/2024 – 7/2025

- DevOps transformation of on-premise applications to the Azure Cloud using IaC (Terraform), Helm Charts, GitOps (ArgoCD) and manifests
- Working with Linux server distributions
- Provisioning maintenance of AKS (Kubernetes) clusters 
- Full provisioning of Grafana manifests (dashboards, alerts, etc.) using IaC and Helm Charts
- Consultant for architectural decisions regarding Azure components and Kubernetes
- Azure Cloud components used: Azure Application Gateway, AKS (Kubernetes), Azure Storage Accounts (Container), Azure Firewall, Web Application Firewall (WAF), Azure KeyVault, and Bastionhost
- Creation of a hub-and-spoke VNET architecture
- Postgres migration from OnPremise environments to the Azure Cloud using Active Standby principles (Crunchy Operator)

Cloud Spezialist, Database Manager, Kubernetes, Microsoft Azure

11/2022 – 6/2024

- Management, further development, optimization and maintenance of Kubernetes clusters with over 600 applications (Rancher)
- DevOps transformation from on-premise applications to Kubernetes using IaC, Helm Charts, GitOps and manifests
- Automated integration and deployment with GitLab CI/CD (.NetCore, Java,
Golang, NodeJS), using jobs such as builds, tests, vulnerability scans, integration tests, deployment and notifications
- Introduction of GitOps using ArgoCD and Gitlab runners
- Integration of logging, tracing and monitoring using Grafana, Prometheus,
Grafana Mimir, Jaeger, Opentelemetry, Opensearch, InfluxDB, and Sentry
- Integration of endpoints with Prometheus metrics in applications (.NetCore, Java, Golang, NodeJS), as well as sidecar tracing using OpenTelemetry Operator
- Full provisioning of Grafana manifests (dashboards, alerts, etc.) using IaC and Helm Charts
- Introduction of a decoupled IAM system using Keycloak (Operator)
- Education and training of developers and system administrators in Kubernetes, observability and SRE approaches
- Consultant for architecture decisions regarding microservices in Kubernetes and tools, as well as databases
- Introduction of DevSecOps in CI/CD pipelines and Kubernetes - with tools
such as HashiCorp Vault and Trivy
- Evaluation of the Confluent Kafka Operator in Kubernetes
- Introduction of integration tests with K6 Grafana
- Implementation of a notification system with Angular, NestJs, GraphQL,
Postgres, VerneMQ and Golang
- Web development with Angular and NestJs

Access Management, Advanced Message Queuing Protocol, Angular, Docker, Golang, Graphql, Continuous Integration, Kubernetes, Postgresql

8/2022 – 10/2022

- Management, optimization and maintenance of Kubernetes clusters (Rancher)
- DevOps transformation from on-premise applications to Kubernetes using IaC, Helm Charts, GitOps and manifests
- Automated integration and deployment with GitLab CI/CD (.NetCore, Java), using jobs such as builds, tests, vulnerability scans and deployment
- Introduction of GitOps using ArgoCD and Gitlab runners
- Integration of logging, tracing and monitoring using Grafana, Prometheus,
Jaeger, Opensearch, Loki and InfluxDB
- Integration of endpoints with Prometheus metrics in applications (.NetCore, Java)
- Consultant for architectural decisions regarding microservices in Kubernetes and tools, as well as databases such as Postgres and MSSQL
- Web development with Angular, NestJs, GraphQL, and Postgres

ASP.NET, DevOps, Kubernetes, Postgresql, Server-Monitoring