Общий стаж за время работы в двух ф

Общий стаж за время работы в двух фирмах – около 3.5 лет.

Результаты (английский) 1:

Overall record during his time with the two firms is about 3.5 years old.

Результаты (английский) 2:

Total experience while working in the two firms - about 3.5 years.

Результаты (английский) 3:

The total length of time of the work of the two firms is approximately 3.5 years.