I am now at the end of my PhD program and have transitioned into the free economy. Other PhD students have done so already, and I have benefited immensively from their experiences. In the spirit of this website I want to share the things that I have learned and pass them on. There a myriads of guides for job seekers in the internet. Most of the are rather generic, and will try to skip these. This post will only contain things which are relevant for people who have a background very similar to mine.
The PhD program can be seen as the qualifying period to do a career in research. If you want to persue a career in the free economy, it might be more sensible to do that right after the Master's degree. I for instance had a high interest in doing more physics research after the Master's thesis, but I desired more practical applications after I have completed the PhD thesis. Additionally the outlook of a career in academic research did not appeal to me that much. This is something that you have to identify for yourself. But if you want to move into the free economy, then this article might be for you.
Be sure to start early enough. I have started to look at the market around eight months before I wanted to start in the industry, and have written the first formal application five months prior. It takes a bit of time to learn how all this works, how a proper cover letter is written and which positions and companies are on the market.