I am an independent APL consultant with more than 30 years of experience.
In case you don’t know: APL is one of the oldest (in terms of age), and youngest (in terms of concepts), of all programming languages.
If you are under serious time pressure to get a project done, consider the Agile Software Development as a strategy and APL as a Programming Language as remedies. Many others have been successful with these options.
Although I have a significant number of other skills as well, my core skill is APL.
The family of programming languages stemming from APL comprises APL, J, K and Q. However, I have not completed projects in K and J.