Required .NET Framework,ASP.NET,HTTP,Network Security,SSL freelancer for Let's Encrypt SSL certificate in Kubernetes ingress job

I'm looking for someone who can figure out for me how Let's Encrypt SSL certificates can be installed on the endpoints of my Kubernetes cluster and how to have them automatically renewed.

Deliverables:
- Short documentation explaining how this works and how I can do it myself
- yaml files with a working example that can be run it my side with 'kubectl apply'

Requirements:
- I'm not (yet) using helm, so deliverables should not be based on helm
- the solution should work in the most recent Google GKE environment making use of the most recent developments there.

Type of freelancer:
- Kubernetes expert
- Understanding endpoint security (with SSL)
- Familiar with Let's Encrypt

Skills & Expertise Required

.NET Framework ASP.NET HTTP Network Security SSL