There are a lot of job boards you can go on to find article writing jobs. In fact, you could probably just look up "article writing jobs online" on Google and get some promising results.
Freelance job boards like Fiverr and Upwork have a multitude of article-related jobs. I personally recommend Fiverr. There are also websites like WritersForHire and HireWriters, where you can apply to become a writer. Finally, more broad sites like Freelancer will allow you to work online with a large clientele base. Job sites like Monster, Indeed, and Steady will also provide you with full time and part time writing jobs that you can work on from home.
If these job boards and online marketplaces don't work for you, you can always go on Facebook groups, social media, or classified ad spaces like Craigslist to apply for jobs.