Good job on having emergency savings, avoiding consumer debt, and getting your 401k match. You are already among the elites, sadly.
Your next goal is to max out your 401k ($19,000 in 2019). Just FIND A WAY. This offers a somewhat instant double-digit return because you avoid taxes. E.g. if you are in the 22% tax bracket, you will defer payment of over $4k in taxes EACH YEAR, and instead that $4k will sit and compound in your account.
In the meantime, analyze whether a roth or traditional IRA is ideal for your situation and max it out too. Roths make the most sense for young people with low-to-average earnings in low tax brackets who might need to access the cash for a down payment or something. Traditional makes more sense for higher earners who will be in a lower bracket after they retire. CAUTION: The combined limit for Roth + Traditional is $6,000, but your income may limit whether your traditional IRA contribution is deductible! If you realize this at tax time the following year like I did, it is a PITA to fix. See:
https://www.irs.gov/retirement-plans/2019-ira-deduction-limits-effect-of-modified-agi-on-deduction-if-you-are-covered-by-a-retirement-plan-at-work Consider investing your Roth or Traditional IRA contribution in a taxable account until you can identify your limit for the year.
Once you have these settings in place, pivot your focus to increasing earnings. Pick up certifications, take night classes, do online code camps, join a Toastmasters club, and take wild shots at higher paying jobs.