The vendor who supplied me services I rated it evil because its work was lousy and delayed but they removed this bad rating without proper justification. Also, sometimes manipulate the score doing that you not can assign them a low score through its interface. When hiring a subject of these make sure you don’t have many jobs assigned and that the tool or platform is their livelihood and not something of step. You must relate them absolutely everything, when I say everything everything is, ranging from functional requirements as non-functional for work as development of applications. You should treat them like a computer and providing them with all the instructions because otherwise they will tell you that it is a new requirement or that you did not tell them. In my case for example, developer told him that implementation required all possible to implement security measures and when this individual never developed the user authentication system I encrypt keys so that when claim you, he told me that I not told you this and had an additional value.
Make sure that you have the profession and experience fit the job using other traditional techniques for the selection of staff and not relying on these platforms offer because not enough since these individuals (especially the unscrupulous) know them well and know how to deal with ellas to deceive him. Never trust or let guide these people, yes you will leave manipulate group will end you paying them more and your project times lengthen more always to their benefit. You must you have absolute control and monitor them with goals and tasks developed and delivered. These people often have more than one job and take advantage of which is either weak or condescending. I hope be helpful the previous Councils and are always very cautious when hiring these characters as group have the win and take advantage of the distance which are in countries whose laws are mediocre, confusing or favour these bad practices without also the platforms that support and serve for disonos so they cheated and fooled to inexperienced people in this hiring personal freelance as a resource for outsourcing the development of technological projects such as software programming.