happy engineer using walkie-talkie on construction site with colleague in background

30s 3539 4044 40s adult architect authority away beginnings building bulldozer business caucasian clothing colleague communications confidence connection construction contractor convenience conversation daytime engineer equipment ethnicity examining front halflength happiness hard hat helmet holding industry looking machinery male man manager men midadult middleaged occupations outdoors people poland professional protection protective radio safety site standing sunshine supervisor technology two twoway vest view walkietalkie warsaw wifi wireless worker working years