Which part of my resume made you think/thought that I would be a good fit?

[oahz]

Which part of my resume made you think/thought that I would be a good fit?

 

[Cagey]

Made you think: after 'made' you need the 'bare infinitive' form of the verb, the form that has no tense.

 

[oahz]

Made you think: after 'made' you need the 'bare infinitive' form of the verb, the form that has no tense.

But "think/thought" belongs to separate clause?

 

[Loob]

But "think/thought" belongs to separate clause?

No, it doesn't.

As Cagey said, you need the bare infinitive "made you think".