Sr. Engineer Kubernetes / DevOps / GitOps / Golang Focus

10/2021 – 11/2021

Fuzzing is a great way to find critical errors in your code that otherwise would have remained hidden. For a client in the crypto security space, I created a tool that would monitor the sourcecode of an golang project through AST parse the results into fuzz-build processeses, fuzz them and later on return the results. The suite is able to continously fuzz a git repository, run in docker and k8s, as well as able to be directly integrated into various ci tools directly.

Cyber Security, Docker, Golang, Kubernetes

12/2020 – 2/2021

In order to reduce the cost of running kubernets in the cloud, a customer came to me to move their existing kubernetes deployment to a more down to earth setup at hetzner.

In order to make the infrastructure managable, we selected Rancher for its ease of use and easy integration with hetzner.
To privision the nodes a cloud init configuration has been created and templates for different instance types and nodegroups have been defined.
Hetzner also offers load balancers, private networks and a csi plugin for easy integration with their volume storage, offering a pefect kubernets base for smaller deployments that benefit massively on the cost factor side while still being managable almost automatically.

DevOps, Golang, Kubernetes

1/2018 – 5/2022

For 3 years, I have been been serving as a regular freelancer, then as a freelance principal engineer to develop and distribute psychological assessment systems that measure occupational competencies, personality, and interests.

My first project was to create two B2C psychological evaluation platforms as MVPs including all marketing material (jobtest4u.de , compfitter.com ). Later on I was promoted to oversee their entire IT operations, where I converted the existing platform to a multi-tenant, white label solution that could be deployed to Kubernetes or directly to enterprise customer servers.

This greatly reduced costs as clients could now be run in isolation and spread out into multiple smaller virtual machines and lead to more conformity with the GDPR, while also allowing for customer-centric design and feature solutions.

In the process, I also streamlined their entire frontend to be compatible with modern design and also well-known UX structures. I finalized the project with an integrated help center which included all the necessary documentation, training videos, and even video commercials. A new enterprise customer can now be onboarded in 15 minutes and any customer-side modifications are directly integrated into the build pipeline.

DevOps, Ansible, Golang, Kubernetes, PHP