In the following, I would like to give as comprehensive an insight as possible into my tech stack and experience. The skill matrix includes a self-assessment based on experience and know-how in the respective technology.
| tools/technologies | self-assessment | experience in years | explanation |
|---|
| docker | ★★★★ | 6 | - Migrating a monolithic environment to containers and Kubernetes starting in 2018.
- Development of new container-based services.
- Regular use in CI/CD, k8s and local development
|
| Kubernetes | ★★★ | 4 | - Development of a tracking solution and operation until 2023 (Matomo, k8s, GKE, GCP, Terraform, Docker, istio, Gitlab CI/CD) for an online community with over 5 million members.
- Setting up an on-premises Kubernetes solution at F&P as a dev/staging environment (Rancher, k3s, Proxmox, Calico).
- Migration of services to containers/Kubernetes (AWS, EKS, Helm, Docker, Terraform, Gitlab CI/CD).
- Development and operation of a scalable Gitlab Runner infrastructure for processing over 200 parallel CI/CD jobs. (AWS, EKS, Cluster Autoscaler, Spot Instances, Gitlab CI/CD, Terraform).
- Running Hashicorp Vault on the AWS Cloud Platform. Hardened and auditable implementation. (AWS, EKS, Vault)
Kubernetes Techstack: k3s, GKE, EKS, Helm, Terraform, Terragrunt, k9s, Cluster Autoscaler, istio, Traefik, Vault, Cert Manager, Gitlab CI/CD, Docker, Datadog, Prometheus, Grafana, MetalLB, trivy, fluentbit, AWS CloudWatch, kubectl … (list not complete) |
| Terraform | ★★★★ | 4 | - Development of Terraform modules and configurations for AWS, GCP, Kubernetes, Helm Charts, Vault, Gitlab CI/CD, Prometheus, Grafana, Proxmox, Rancher, MetalLB, fluentbit, monitoring, logging ... (list not complete)
- Deploying Kubernetes clusters using Terraform on AWS and GCP.
Terraform Techstack: Terraform, Terragrunt, Tftui, Trivy, tflint |
| Configuration Management | ★★★★ | 6 | - Development of salt states for the configuration of servers and services.
- Development of a local test environment for Salststates using Docker and implementation of CI tests in Gitlab CI
Techs: Saltstack, Ansible |
| AWS | ★★★★ | 4 | - Migrating services to containers/Kubernetes for an online community with several million members (AWS, EKS, Helm, Docker, Terraform, Gitlab CI/CD).
- Development and operation of a scalable Gitlab Runner infrastructure for processing over 200 parallel CI/CD jobs. (AWS, EKS, Cluster Autoscaler, Spot Instances, Gitlab CI/CD, Terraform).
- Running Hashicorp Vault on the AWS Cloud Platform. Hardened and auditable implementation. (AWS, EKS, Vault)
Techs: EKS, VPC, VPC Endpoints, EC2, Transit Gateway, Route 53, ECS, ECR, IAM, AWS IAM Identity Center (SSO), S3, Cloud Trail, Load Balancing (ALB/NLB), CloudWatch, RDS, KMS |
| GCP | ★★★ | 4 | - Development of a tracking solution and operation until 2023 (Matomo, k8s, GKE, GCP, Terraform, Docker, istio, Gitlab CI/CD) for an online community with over 5 million members.
- Introducing BigQuery and DataStudio to analyze SEO metrics
Techs: GKE, VPC, Compute Engine, Cloud Monitoring, Cloud Logging, Cloud SQL, Cloud Load Balancing, Big Query, Memorystore, Cloud Storage, Looker Studio (Data Studio), App Engine |
| Azure | ★★ | 1 | - Implementation of cloud infrastructures in personal projects using Terraform (Virtual Machines, VM Scale Sets, AKS, Virtual Network)
|
| Cloudflare | ★★★ | 4 | - Introduction of Cloudflare DNS, WAF, CDN and configuration using Terraform for an online community with several million members
- Provision of internal services using Cloudflare ZTNA
- Developing a Middleware Using Golang, WASM and Cloudflare Workers
|
| STACKIT Cloud | ★★ | 1 | - Planning and implementation of the cloud migration of several services to the STACKIT Cloud: feasibility analysis, cost comparison and performance benchmarks. Migration of applications (Node.js, Kotlin, PostgreSQL) including adaptation and optimization for the target platform
|
Techs: SKE, PostgreSQL, Observability, Computing, Object Storage, Networking
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