Current Students
Our Team

Contact Us

Sinead Costello
Students' Union President
519-884-8111 x NA


Image of Students in Passage in Campus
Meet the Students' Union Team

The St. Jerome's University Students' Union is here to support your experience as a student at SJU and the University of Waterloo. We look forward to connecting with many students at the university so that we can share your concerns at St. Jerome's Board of Governors, WUSA Council, St. Jerome's Senate Council, and Committee meetings. You can learn a little bit about us below to help you recognize us and reach out and talk to us when you see us on campus.


You can always stop by our office (located in SJU's Sweeney Hall, Fireplace Lounge) to chat or share your ideas; reach out using our president's email address at; or connect with one of the other members of our executive listed below. Keep an eye on our social media accounts, particularly Instagram - @sjustudentsunion, to find out about upcoming events!

Sinead Costello, Students' Union President
Sinead Costello
Hi everyone, my name is Sinead and I am your 2023-2024 Students' Union President. As President, I hope to lead this year's Students' Union in the planning of fundamental SJU events as well as spearhead student advocating with Senior Admin, Staff, and Faculty, building a Students' Union that serves its student body in any way we're needed. It is important to me that Students at SJU have a voice that is heard. I will do everything in my power to make that the case. 

A random fact about me is that I've worn glasses since I was 4! 

Kat Moller, Students' Union Vice President Internal
Kat Moller
Hi friends! My name is Kat, and I’m in my 3B term of Legal Studies with a minor in Sociology. I’ve been a student leader in many different capacities throughout my time at SJ, including as a floor rep, XG, CEO, and residence Don, and now as your VPI! 

Random Fact: I’m a massive Taylor Swift fan (aka a Swiftie)! 

Asher Scaini, Students' Union Vice President Finance
Asher Scaini

Hi everyone! My name is Asher and I’m studying nanotechnology engineering.

Here’s a fun fact about me - I can effortlessly sleep for 17+ hours straight without waking up. 

Saman Zaidi, Students' Union Vice President Academic
Saman Zaidi

I am this year's Vice President Academic and I am so glad to be part of Union again! I am in my 2B term of English and Business and am excited to be able to advocate for the academic needs of SJU students! 

Fun fact about me is that I am currently learning how to play the guitar!  

Isabelle Carreiro, Students' Union
Isabelle Carreiro 

Hi everyone! My name is Isabelle and I am your Communications Officer this 2023-2024 school year! I am currently going into my 3B term of Honours Arts Psychology Student with a minor in Religious and Catholic Studies! 

Random Fact: I have played Trumpet for 5 years! 

Chiara McLean, Students' Union Project Manager and Admin Officer
Chiara McLean

I am a 3rd year student majoring in Political Science/Peace and Conflict Studies with a minor in Speech Communications. 

Random Fact: I spend most of my money on books.
Tracy Liu, Student Affairs Liaison
Tracy Liu

Hey SJ! My name is Tracy, and I'm in my first year of Psychology. I am so excited to serve as your 2023/2024 Student Affairs Liaison. I'm passionate about creating a positive student environment that fosters growth and success. I will actively listen to the needs of our student community and advocate for change. I hope to assist you by creating community outreach initiatives and managing external activities alongside my fellow union members to enhance our University experience!
Andreea Mckague, Business Affairs Liaison
Andreea Mckague

Hi SJ! My name is Andreea, and I'm a first year student in the Global Business and Digital Arts program. I am excited to be your 2023/2024 Business Affairs Liaison! I will be working alongside the SJU Students' Union team as your voice, developing projects and initiatives (on the business and finance side of things) that will improve your overall support and experience here at SJ!