what is your question though? Are you afraid that 30 might be too old? If that’s the case, then you don’t have to worry because it isn’t even close to being too old.
What is your current experience, in the industry and education?
Particularly, does this mean you have worked in an environment using said technologies or is it book/ self-learning exercises?
If you don’t have experience in a professional role, within the industry you will be unlikely to find a junior role. Junior role generally means ~2ish years in the industry. A junior role is not a trainee. A trainee, is more or less an internship. Junior developers and designers are expected to know what they are doing with little direction.
Awaiting your response before anything else can be said.