Steffi was born and raised in Malta. She has recently starred in short film Camilla directed by Stephanie Sant, and featured in a few other works; the latest being 13 Hours: The Secret Soldiers of Benghazi directed by Michael Bay and Never After (Pilot) directed by Abigail Mallia.
During the 2013 Malta Amateur Dramatic Club's One-Act Play Festival, she was awarded the Best Actress award for her performance in Murder Play.