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CaseSingularPlural
Nominativeименительный · кто? что?инженер инженеры the subject: who or what acts
Accusativeвинительный · кого? что?инженера инженеров the direct object of the verb
Genitiveродительный · кого? чего?инженера инженеров possession, absence, "of"-phrases
Dativeдательный · кому? чему?инженеру инженерам the receiver: to or for someone
Instrumentalтворительный · кем? чем?инженером инженерами the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?инженере инженерах location and topics: in, at, about

Инженер is animate, so its accusative copies the genitive: the form after "I see..." matches the form after "of".

Look up any other word in the Russian declension tool, see where инженер ranks in the most common Russian words, or start from Russian cases explained if the table above is new territory. More vocabulary lives in Russian words by topic and Russian phrases.

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Slova drills инженер and every word like it with typed case endings, checked letter by letter.

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