If HTML is a basis of frontend programming, then the SQL is a key to the deep database programming and managing of almost every existing DBMS. Using this language, you can manage different data, filter and analyze information even in very large volumes. In general, SQL first appeared in 1974, but it is still widely used by programmers who work with different databases platforms such as MySQL, because of its versatility and uniqueness. Did you know that a well-known Microsoft Access application is also based on the SQL? Yes, SQL is much closer than it seems. It’s everywhere! Typically, experienced SQL developers are working with multiple platforms and databases systems. It is an incredibly big advantage! You can hire a highly qualified SQL database developer and get an expert advice from him or simply involve him in your project as a BackEnd SQL Freelancer. During one week you can test your candidate and if he will not satisfy you, we will replace him for another one without any difficulties!

CSS is a true cornerstone of frontend programming. CSS technology allows us to build the structure of web pages quickly, comfortably and without wasting time. CSS is also known as a Junior Frontend Developer starting point :) CSS is mostly used for visual presentation of pages written using both HTML or XHTML, however CSS format can be successfully applied to other different types of XML-documents. Today, CSS is one of those essential tools which took the A-line in the arsenal of every freelance or agency's FrontEnd developer. Some people even are even joking that CSS and HTML may be taught in schools soon. And that’s not just a dull joke, because CSS has become so common that it is now virtually everywhere. While looking for a qualified Full Stack CSS developer, ask the candidates to send you some links to the websites they have developed. Check them out and you will find out whether this person has enough skills or not. Using AOG you can quickly get the future contractor much easier, because all our CSS freelancers have the relevant and verified experience.

Everyone who is expecting to get a professionally created software should take the services of professional QA Specialists. QA is a process of testing, inspection and resuming the requirements which are needed for the final end-product improvement. Once your product is ready, or nearly ready, it should be quickly transferred to the professional QA freelance engineers for the QA-audit. Highly-qualified QA Freelancers will carry out all the required operations in order to identify shortcomings, errors or inconsistencies with your own terms of reference. This data will be sended to the developers, so they will improve all the problematic gaps and you will get a perfectly working software! Most Full Stack QA Specialists you see on AOG have experience in large comprehensive projects for corporate clients based in the USA and even worldwide! Younger professionals were involved in local projects of medium complexity, so you can be strongly confident in the professionalism of your potential QA Ninjas!