To find a skilled 2D game artist for hire can be a real challenge - no idea where to search for, how to choose the best one and so on. To save yourself from troubles, you may address to recruiting or outsourcing agencies. If you are still in search of new talent on your own, consider reliable online resources, like ArtStation, LinkedIn, etc. Look through job searching platforms (Indeed, Glassdoor), compare 2D artist pricing rates, and come up with a winning decision for yourself.
Today, the way of hiring creative specialists is simplified by times - a wide range of online services and platforms offer an endless variety of candidates to choose from. The only thing you need to do is to post job advertisements and study every potential candidate for professional suitability.
You should ask for a 2D game art portfolio, study it thoroughly and don't forget to check the skillset of a 2D game artist - academic painting, sketching, a full understanding of 2D art mechanics and art production processes with 2D art software programs like Adobe Photoshop, Adobe Illustrator, etc. You can test a 2D artist for hire giving the task to create a 2D artwork according to specific requirements. As a rule, each of these stages takes a lot of time.
Alternatively, you can apply to a 2D game art outsourcing company with motivated and experienced professionals that provide specialized art services. You're likely to meet your business needs, get high-quality 2D art services based on many guarantees offered to you in official agreements.