Gerish has been working in the theatre in varied capacities since 12 years. He started off his theatre journey in Mumbai as an actor with the theatre group Working Title 2.0 and Stage Two Theatre. Additionally, he has created several student productions with both school and college students in Mumbai over the past 10 years. He is presently serving as a visiting faculty at The Drama School Mumbai and the NMIMS Jyoti Dalal School of Liberal Arts. He also works with RPG Foundation as a super trainer for their Pehlay Akshar School Training Programme.
In March 2015, he founded his own theatre group, The Blind and the Elephant, which staged its first production, Ripples, a play dealing with questions of teaching and learning, co-written and directed by him. The play drew favourable reviews from critics, practitioners, students, and general audiences alike.
Holding a M.A (Honors) in English Literature from the University of Mumbai, he received the Charles Wallace scholarship by the British Council to pursue Module 1 (October-December 2016) of the Devising Theatre and Performance course at the London International School of Performing Arts (LISPA), situated in Berlin He completed Module 2 (January-March 2018) of the same course at LISPA.
In August 2017, he was awarded the prestigious Hindu Playwright Award along with his co-writer Akshat Nigam for their play In Search of Dariya Sagar for the new unpublished script. Also, In Search of Dariya Sagar has been chosen among the three final shortlisted plays for Naya/Noya 2018—the first Indian Playwrights’ Festival as part of Specific 2018, organised by Feste Theatre, Prague, Brno, Czech Republic. The production of the same directed by Gerish opened in July 2018 in Mumbai and travelled to the Hindu Theatre Festival 2018, Rangashankara Theatre, Azim Premji University Bangalore and continues to do its round of shows.
Gerish has been awarded the Hindu Playwright Award 2017 for In Search of Dariya Sagar at the Hindu Theatre Festival 2017 along with his co-writer Akshat Nigam. It was among the three final shortlisted plays for Naya/Noya 2018—the first Indian Playwrights’ Festival—as part of Specific 2018, organised by Feste Theatre, Prague, Brno, Czech Republic.