ˈɜːlɪɚ ðə ɹᵻkɹˈuːtmənt jˈuːzd təbi θɹuː ˈʌpsk ˌɛndʒɪnˈɪɹɪŋ sˈɜːvɪsᵻz ɛɡzˈæm fɔːɹ ˌɛndʒɪnˈɪɹz bˌʌt nˈaʊ ˈæftɚ tˈuː jˈɪɹz hˈɔlt ɪts θɹuː ˈʌpsk sˈɪvəl sˈɜːvɪsᵻz ɛɡzˈæm fɹʌm tˈuː θˈaʊzənd twˈɛnti tˈuː; ɐn ˈɔːl ˈɪndiɚ ɹˈɪʔn̩ tˈɛst fˈɑːloʊd baɪ ˈɪntɚvjˌuː fɔːɹ sᵻlˈɛktᵻd kˈændᵻdˌeɪts.
Earlier the recruitment used to be through UPSC Engineering Services Exam for Engineers but now after 2 years halt it's through UPSC Civil Services Exam from 2022; an all India written test followed by interview for selected candidates.