This is the 9417th most frequent Turkish word.
acentesiyken
"While being its/her/his/their agent."
Here, "acentesiyken" is used to describe the status of being an agent of the insurance company in the past while engaging in certain activities.
Sigorta şirketinin acentesiyken birçok müşteriyle görüştüm.
While I was an agent of the insurance company, I met many clients.
In this sentence, "acentesiyken" refers to the role of being a travel agent in the past, explaining the responsibilities during that period.
Bir seyahat acentesiyken şehir turları düzenliyordum.
When I was a travel agent, I used to organize city tours.
"Acentesiyken" indicates the past role as an agent of a specified company, linked to the activity of promoting products during that tenure.