Yes, you should still get vaccinated after recovering from COVID-19. According to the most recent recommendations by the Austrian Vaccination Board (as of 5 July 2021), it is best to wait for about four weeks after your recovery, and to get only one vaccination dose.
In cases like this, it is assumed that your existing immunity will be boosted and thus your protection against Covid-19 is extended by the vaccination. Independently of current medical/immunological recommendations, two doses may be required for international travel, in which case a second vaccination can and should be administered for purely formal reasons. Please note that an increased rate of vaccination reactions cannot be excluded for people who have previously recovered from Covid-19.