The first engineer has to understand that not every colleague will operate at the same level. Some people on the team will not be design or architecture wizards

The first engineer has to understand that not every colleague will operate at the same level. Some people on the team will not be design or architecture wizards. Sooner everyone realizes that the better. Because, after that realization team members can focus on making things better. In my experience, most of the successful teams are those in which team tries to grow together. So the first engineer should focus on how to get the best out of second engineer. If there are skill gaps, second engineer should be offered some courses. If there is lack of team cohesion, try some team building exercises. Remember, life is not perfect, we have to play with the cards we are dealt with. We should try to put our egos aside, be positive and get things done.