Data must be accessible
And also complete, accurate, well-timed, interconnected, consistent, relevant
Behind any product, service – whether it is a recommender system on the site, sending out personalized offers, a customer retention campaign - there is data. The quality of decisions depends on the quality of this data, because garbage in – garbage out. A data engineer is responsible for delivering quality data from various sources (for example, a company's website, CRM, social networks). Employers cannot close vacancies for these specialists for months.