Good day,
I am an expert in elearning with over 18 years of experience that includes but not limited to instructional design, course development, LMS implementation/ development/ administration/ training along with many other related experiences that I work on advanced level.
On the Storyline part, I have 7 years of experience, since it was first launched in May 2012, I work on advanced level on Storyline, so there should not be any problem with any development stage.
Please chat with me and provide me with more detail about your project and where I should provide you with related examples of my work.
Best regards,