Concept:
Jaunpur was an important centre of Indo-Islamic architecture.
The Sharqi rulers of Jaunpur constructed many important monuments, including mosques.
Step 1: Identify the monument.
Jama Masjid at Jaunpur is an important example of Sharqi architecture.
It was built in the fifteenth century.
Step 2: Identify the ruler.
The Jama Masjid at Jaunpur was constructed by Husain Shah.
He was associated with the Sharqi dynasty of Jaunpur.
Step 3: Final conclusion.
Therefore, the correct answer is:
\[
\boxed{\text{Husain Shah}}
\]