Hi, I’m Julian. I’m a Software Engineer living in the beautiful city of San Francisco.



Blitz is the German word for lightning and also a zero dependency, bi-directional, containerized source code synchronizer. It runs as an additional container and synchronizes your source code from your Mac with a Docker Volume, giving you lightning fast access to files on your Docker host.


Donner is the German word for thunder. It also is nice little tool that will enrich your experience when developing applications in containers. It abstracts the execution of commands away from you. Instead of having to think about whether you have to use docker-compose exec or docker-compose run and which service to use, you just prefix your commands with donner run.


Trying to wrap your head around Docker? Checkout LearnDocker.online! 300+ videos, 11 hours of content, dedicated instructor, office hours and quizzes to make sure you have mastered Docker and containers. It was never that easy to learn Docker.

Dockerfile tips and tricks

I started a small screencast series with tips and tricks for writing Dockerfiles. You can check it out on Youtube.


Life talks

Southeast Ruby 2019
Dockerizing Rails - A supercharged development process
August 1-2, 2019
Nashville, Tennessee

RailsConf 2019
Dockerizing Rails - A supercharged development process
April 30 - May 2, 2019
Minneapolis, Minnesota

Ruby on Ice 2019
Containerized Ruby - A supercharged development process
February 22-24, 2019


Code with Jason
Feature Flags and Duplication
December 6, 2022

Code with Jason
Scheduling and Service Objects
April 6, 2021

Code with Jason
Rails and Docker
November 19, 2019

Adventures in DevOps
Continuous Delivery
October 22, 2019

Ruby Rogues
Dockerized Development Environments
August 20, 2019

JavaScript Jabber
JavaScript Docker
November 20, 2018

Elixir Mix
July 17, 2018