Akamai Data Engineer interview questions

First round they asked SQL based questions and then I waited for the results. The HR just ghosted me. Never answered calls or replied back to my messages. This is so unprofessional behaviour. If not selected, we can atleast expect a mail or a message. Worst experience.

3 rounds: Round 1: technical Questions relation to DBMS such as joins and simple queries were asked. 1 puzzle was also asked. Round 2: technical Questions related to Linux and some puzzles were asked Round 3: HR Tell me about yourself, Questions related to projects on resume, what challenges you faced and how you overcame