They offer work in Europe. How to check the employer?
Depending on the country where the employer is located, there are specific features of their verification.
The first thing you need to do is look in open sources to see if such an employer (company) really exists and read reviews about it.
In the future, it is necessary to check whether the employer is properly registered in the registers. Here are examples of such registers:
Register of companies of Great Britain — https://beta.companieshouse.gov.uk/
Register of companies of the Czech Republic — https://rejstriky.finance.cz/
Also, it is necessary to check the employer for the presence of legal disputes against him. For example, in Poland it is the Regional Court Register (KRS).
Based on this information alone, it is possible to draw conclusions about whether it is worth working for a particular employer.