How do you say we have a male professor in spanish?

Profesór is the spanish Word for male professor. Profesora is a female professor.

Maestro/Maestra for teacher male/female.

"Tengo un profesór" means I have a [male] professor.

"Tenemos un profesór" means we have a [male] professor.

The spanish Word for male is masculino. "Tengo un profesór masculino" would be a redundant statement that repeats itself redundantly over again.