Kubernetes Expert | Site Reliability Engineer | Fullstack Developer (Angular)

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, AMQP, Angular, Docker, Go (GoLang), GraphQL, Kontinuierliche Integration (CI), 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

2/2022 – 6/2022

- Creation of an IT architecture overview for business use cases using a
microservice and domain-driven approach
- Working with AWS and creating EKS clusters (Kubernetes), Route53, S3 and
EC2 instances
- Management, optimization and maintenance of Kubernetes clusters (EKS)
- Management of VPCs and EC2 instances using Ansible and Terraform
- CI/CD pipelining with GitHub Actions, Helm Charts and ArgoCD (GitOps)
- Monitoring of applications and systems using Grafana, Prometheus and Influx Stack
- Creation and administration of Postgres databases
- Deployment of microservice applications in Kubernetes using ArgoCD
(GitOps), as well as the creation of its manifests with Helm Charts (IaC)
- Web development with Angular, NestJs, GraphQL, and Postgres

Amazon Web Services (AWS), Angular, Ansible, DevOps, GraphQL, Node.js, PostgreSQL, Software Architektur / Modellierung, TypeScript