Freelancer jobs are so prevalent because they offer a unique solution to businesses. If you need someone to help with a project, you can hire them as and when they’re required. 

• Look at the quality of their clients: If a freelancer has a long list of high-quality clients, then it speaks volumes. When big businesses trust them, this shows they’re the best at what they do. 
• Communicate with them: Send a message to freelancers and see how they respond. If their communication is excellent, then that’s a good sign. But, if they take ages to respond and aren’t very transparent or forward with their replies, then it’s not good. 

• They provide a lot of input: Naturally, you’ll offer a job description for your project. But, it’s good when a freelancer has their own input. If they’re not afraid to ask questions and make smart suggestions, then it shows their worth. 

Consequently, you don’t need to keep them on your books all the time. It’s better than hiring an employee who goes through days or weeks without doing any work. You end up paying them to sit around and do nothing! 

More info: The Importance of Computer Engineering in Today's Society