NASA JSC is hiring for full time positions for May graduates. The following posting was shared by a Mission Control as a Trajectory Operations Officer (TOPO), of which the team is responsible for maintaining the ISS trajectory, planning and assessing visiting vehicle missions to and from the ISS, and monitoring conjunctions with the ISS and performing debris avoidance maneuvers if necessary. The job position would be with a contract company (Barrios) but would work and support the mission alongside civil servants and other contractors.

Can be undergraduates or graduate students. Below is a link to the the job req with a detailed description of the job position for students to look over. This is also where students can apply for the job online and submit a resume: 

International Space Station Flight Controller - Trajectory Operations & Planning Officer (TOPO) in Houston, Texas | Careers at IMOC III