Now I try to find freelance jobs using Linkedin mainly.
I started the rough way doing basic computer repairs until I came across someone that needed actual programming help. That turned into a 6 month contract, and from there a 1 year contract with a competitor. After that I got a full-time job.
In 2018 I decided to go and be a digital nomad. Getting contract work was now easy falling back on an extremely rich network from years of regular employment. I'm easy to work with and I go out of my way to mentor and help build teams up.
This is mostly done with personal messages on LinkedIn.
He's referring to contracting, where you work for one client at a time, almost identical to like an employee would but for the duration limit (and likely a company in between you and them to solidly the facade).
In contrast to what most people would call freelance, where you work for multiple clients at the same time, i.e. a dev agency of one.
computer futures in europe years ago wanted to double my rate
Worked until I found something better.
You can search and filter people by their position in the company, linkedin habits, industry, profession, career history, etc.
You can decide what your ideal client looks like, search for that, and then find and message them
My previous employer at that time was a startup with about 100 people. Unfortunately the startup imploded (that was why I left) so I suddenly know about 100 people who were all working at different companies, mostly startups who needed to ramp up quickly. Working at some of those startups I got to know other people who liked my work, who eventually left for other companies, etc. (Admittedly "work for a startup which implodes" probably isn't reproducible advice.)