As the Finn signed up with the team for 2017, Hamilton's father Anthony warned that his son is a "career killer".
However, Bottas told Finnish news agency Suomen Tietotoimisto: "I'm really happy to have Lewis as my teammate.
"It's a great chance for me to show my abilities. I've always wanted as quick a teammate as possible, and I really have one," he added.
Bottas, 27, said that he bumped into triple world champion Hamilton at the team's Brackley headquarters this week.
"We each had our own meetings and it was a quick greeting," he revealed. "He welcomed me to the team and congratulated me."
"I fully understand that it's not a longer agreement at this stage," Bottas insisted. "Of course the team wants to see how I go. It's ok for me.
"That's the way it goes - I've always had to earn my place but it seems that I know how to drive."
The season gets underway with the Australian Grand Prix on March 26.