< Resume />
# Career timeline
My journey
A detailed look at my professional stations, education, and projects.
A clear timeline of my roles, milestones, and responsibilities — focused on impact, technical scope, and the systems I built.
IT Specialist — System Integration
Deutsche Telekom AG
Dual apprenticeship with a focus on Linux, automation, and containerized platforms.
- Administration of Linux-based systems
- Executing load tests
- Shell scripting for automation
- Docker & Kubernetes implementations
- Developing Jenkins pipelines
Kubernetes Homelab & GitOps Platform
Private Platform Engineering Environment
Building a production-like Kubernetes environment as a personal learning and experimentation platform with a focus on GitOps, observability, and infrastructure as code.
- 3-node Kubernetes cluster on Hetzner with Cilium CNI
- GitOps deployments via ArgoCD & Helm charts
- Monitoring stack with Prometheus, Grafana & Loki
- Automated backups and secrets management
- CI/CD with GitHub Actions for my own services
Cloud Engineer
NTT DATA Business Solutions AG
Automation and operations for Linux and SAP-adjacent systems, focused on process automation and stable enterprise environments.
- Developing Python & Ansible automations with AWX
- Operating SUSE Linux systems in SAP contexts
- Working based on ITIL v4 & Scrum
- Standardizing deployment processes
Ringana Notify Automation
Telegram Bot & Web Crawler
Custom-built platform for automated product and offer notifications, focused on scalability, reliability, and operational clarity.
- Telegram bot in Node.js with MongoDB & Redis
- Web crawler with Puppeteer & proxy routing
- Observability with Prometheus/Grafana
- Multi-user support & multi-tenancy
- Deployment on my own Kubernetes environment
Onboarding Bot
Telegram Bot & OpenAI Integration
Custom-built platform to automate onboarding processes in Telegram — with modular learning paths, persistent conversations, and reminder logic. Focus: scalability, reliability, and a clear activation-flow UX for new partners.
- Go Telegram bot (telegram-bot-api/v5) with modular menus & callback flows
- OpenAI integration via go-openai: persistent threads, Assistant-ID support, structured responses
- MongoDB for profiles, setup-wizard state, and token/user management
- Redis reminder service (ZSET) for scheduled check-ins (e.g., 2 weeks after start)
- Observability: health/status endpoints & monitoring-ready architecture
Cloud Engineer & Consultant
Cloudogu GmbH
Consulting and implementation of modern cloud and Kubernetes platforms with a focus on GitOps, infrastructure as code, and DevOps transformation.
- Designing Kubernetes architectures for on-prem & cloud
- Building GitOps workflows with ArgoCD and Helm
- Developing modular Terraform stacks
- Introducing monitoring with Prometheus & Grafana
- Advising on CI/CD strategies and DevOps processes