моему старшему брату Сергею 27 лет,

моему старшему брату Сергею 27 лет, он работает инженером по диагностике дорог.

Результаты (английский) 1:

my older brother Chris, 27 years old, he works as an engineer on the diagnosis of roads.

Результаты (английский) 2:

my older brother Sergey 27 years, he worked as an engineer for the diagnosis of roads.

Результаты (английский) 3:

My eldest brother Sergei 27 years, he is working as a service engineer for diagnosing roads.