Russian translation: инспектор по надзору за строительством
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Commissioning is "vvod ob'yekta v ekspluatatsiyu". Depending on the situation, it can also be translated as "puskonaladochniye raboty". In fact, these two are very common. The position "commissioning engineer" is normally translated into Russian as "inzhener po vvodu (ob'yektov) v ekspluatatsiyu". See below some examples: