Below I've included a recent poster that I've made to serve as a template. All the technical details of the code that went into this poster can be found in the tutorials on using latex, beamer and tikz. If you have additional questions, not covered by those, please reach out and I'd be happy to modify this post to include those details.
The resulting poster looks like this:
I believe that the template I started with to achieve this was from Overleaf (open source).
Here is all the source code you need to use this as a leaping off point for your poster!