Helsing
Site Reliability Engineer
Site Reliability Engineering at Helsing.
Hans Jörg Wieland
Hajo · /ˈhaːjo/ · SRE / Platform Engineer · Munich
Hi 👋 I’m Hajo (/ˈhaːjo/), an IT freelancer from Munich 🥨, Germany 🇩🇪.
With over 15 years of experience in tech, I’ve worked with a wide range of customers and technologies. I’m passionate about building scalable, reliable, and secure infrastructure.
Record
Full work history
All freelance engagements and permanent positions.
Uni Erlangen
Kubernetes GPU Consulting
Consulting on Kubernetes & CNCF ecosystem regarding NVIDIA GPU research clusters.
STACKIT
Kubernetes Security Expert
Implemented Security controls, evaluated guidelines and supported the team regarding BSI C5 compliance for the central STACKIT Kubernetes Engine (“SKE”) in a high security environment.
Markant
DevOps & Grafana Expert
Established an enterprise-wide modern observability stack with Infrastructure as Code running On-Premise and in Azure using Docker, Grafana Cloud, Loki and Mimir
HanseMerkur
Kubernetes Consultant
Supported with the migration from On-Premise Kubernetes to AWS EKS, developed a custom Kubernetes controller, reviewed Terraform code, evaluted CNI setup and Service Mesh solutions.
Bundesdruckerei
Site Reliability Engineer
Built and maintained a secure, air-gapped Kubernetes platform for AI/ML workloads with comprehensive monitoring, storage, and authentication systems in a high security and regularted environment.
Eventim
Kubernetes Engineer
Established a multi-account AWS EKS infrastructure for Olympic ticket sales, implementing comprehensive observability, security, and automation while optimizing costs and performance through GitOps, service mesh, and autoscaling solutions.
Kassenärztliche Vereinigung Bayern
Kubernetes Engineer
Designed and implemented an on-premise Kubernetes platform in greenfield for healthcare services in regulated tightly regulated environment.
Munich Re
Kubernetes Engineer
Built and managed a comprehensive AWS and Kubernetes infrastructure across five accounts for financial services, implementing security best practices, GitOps workflows, and cost optimization while maintaining high availability and compliance standards.
ventx
DevOps Engineer
Lead Kubernetes consultant in a cloud & infrastructure agency, working in various DevOps and K8s projects
BWG
Linux Administrator
IT-Administrafor the in-house and later cloud infrastructure multiple for e-commerce shops
m.a.x. IT
VMware Administrator
Administered VMware clusters and attached SANs
IP Exchange GmbH
Linux / NOC
Member of the Network Operations Center team overseeing multiple datacenters
petaFuel GmbH
Linux Systemadministrator
Linux and Windows Systemadministration for a Mastercard payment processor