Senior Cloud Engineer (Contractor) - ATVANTAGE (TIMETOACT GROUP) / ARS Computer und Consulting (Cloud Migration, AI Infrastructure & Serverless Architecture)
Duration: March 2025 - December 2025
Summary:
- Executed complex cloud migration strategies transitioning from Azure to AWS, architected production-grade AI infrastructure for Retrieval-Augmented Generation applications, and designed automated container platforms with serverless architectures
- The project focused on enhancing cloud infrastructure efficiency, security, and automation
Responsibilities:
- Planned and conceptualized cloud migration strategies ensuring data integrity and minimal downtime.
- Architected AI infrastructure integrating Vector Databases and LLM services to accelerate information retrieval by 40%.
- Designed and operated container platforms using AWS EKS and IBM Cloud Code Engine serverless services.
- Implemented Zero Trust security models with granular IAM policies and central secrets management.
- Established declarative resource management with Terraform and GitOps strategies using ArgoCD.
Technologies: AWS (EKS, VPC, IAM), Microsoft Azure, IBM Cloud (Code Engine), Terraform, ArgoCD, Vector Databases, LLM services, Zero Trust Security, IAM, GitOps
DevOps Consultant & Kubernetes Specialist (Contractor) - enthus GmbH (Kubernetes Architectures, GitOps & Observability)
Duration: March 2023 - March 2025
Summary:
- Designed and implemented highly available Kubernetes clusters for edge and datacenter workloads, developed GitOps pipelines, and built observability solutions to ensure system reliability and compliance
- The project aimed to automate deployment workflows and enhance infrastructure security and monitoring
Responsibilities:
- Designed and implemented Kubernetes clusters using RKE, K3s, Rancher, and Harvester.
- Engineered GitOps pipelines with FluxCD and GitLab to automate deployments.
- Built monitoring solutions integrating Prometheus, Thanos, Loki, and Grafana.
- Executed Linux server hardening following OpenSCAP and CIS benchmarks.
- Managed large-scale Nextcloud installations ensuring data integrity and availability.
- Developed reusable Helm Charts and Ansible playbooks to automate provisioning.
Technologies: Kubernetes (RKE, K3s, Rancher, Harvester), FluxCD, GitLab CI, Prometheus, Thanos, Loki, Grafana, OpenSCAP, CIS Benchmarks, Nextcloud, Helm, Ansible
DevOps Engineer - DLTSecure GmbH (Blockchain Infrastructure and Automation)
Duration: January 2021 - February 2023
Summary:
- Designed and deployed high-availability cloud infrastructure for blockchain validator nodes, focusing on uptime and automation
- Implemented monitoring solutions to provide real-time health visibility of blockchain nodes
Responsibilities:
- Designed and deployed cloud infrastructure on Hetzner Cloud ensuring 99.95% uptime for blockchain validator nodes.
- Automated node provisioning using Bash scripting and Docker/Docker-Compose, reducing manual effort by 80%.
- Implemented monitoring stacks with Prometheus and Grafana for real-time validator health visibility.
Technologies: Hetzner Cloud, Bash, Docker, Docker-Compose, Prometheus, Grafana
System Engineer - Materna GmbH (Aviation Self-Service Solutions Integration)
Duration: August 2017 - October 2020
Summary: Led technical system integration projects for aviation self-service solutions, delivering projects under budget and providing Tier-2 support to international aviation clients.
Responsibilities:
- Led system integration projects for aviation self-service solutions, delivering projects 10% under budget.
- Provided Tier-2 technical support resolving over 500 incidents annually for international clients.
System Engineer - Vodafone D2 GmbH (Core Network Monitoring & Troubleshooting)
Duration: March 2008 - June 2012
Summary: Provided 1st level support for core network monitoring and troubleshooting, ensuring network stability and performance.
Responsibilities:
- Monitored core network and performed troubleshooting tasks.
- Provided 1st level support to maintain network operations.
Upstaffer since September, 2026
