Only way to get hired with your credentials is with some serious networking. In your local area, look for code/tech meetups and talk with people. Look for "Code and Coffee" on meetup or facebook or something (though I must warn against caffeine consumption for teenagers!). You'll most likely have to look for an internship rather than a Junior Dev position at first, which is typically the pipeline that companies use to hire Jr Engineers.

Another option is to look for "Tier 3 support" or "Integrations engineers". Often, companies will look for people with minor coding skills to work directly with clients to help implement the company product for the client (for example, adding some custom widget to their wordpress site, new features for their salesforce instance, etc.)

These engineers don't create the company product but they do get some experience scripting things and often they can use this position to transition to a full time engineering role. In my experience, these roles have far lower requirements to entry