Sean Doenias
Best For
Specialties
Credentials
- BJJ Black Belt (under Matt Bryers, TRITAC)
- Japanese Jujitsu Black Belt (under Sean Juggler, Zen Budo Jujitsu)
- Wrestling background
- US Army Veteran (deployed)
- DPT, University of Connecticut, 2022
- NSCA-CSCS
Sean Doenias is one of TRITAC's lead Jiu-Jitsu coaches. He runs the Monday no-gi Jiu-Jitsu class and coaches members across the rest of the week. Black Belt in Brazilian Jiu-Jitsu under Matt Bryers, Black Belt in Japanese Jujitsu under Sean Juggler at Zen Budo Jujitsu in New Milford, CT. Strong wrestling background. US Army veteran with overseas deployments. Tough, athletic, intelligent grappler who helps every level on the mat. Sean also holds advanced strength-and-conditioning credentials (DPT, University of Connecticut 2022; NSCA-CSCS) that inform how he coaches around injuries, but his role at TRITAC is on the Jiu-Jitsu mat.
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Take the quiz to find the right program, or check the schedule and walk in for a class. Either way — first week is on us.
Meet the rest of the team.
Matt Bryers
Owner, Head Coach
Owner and head coach. 30+ years on the mat, BJJ 3rd degree black belt, Kobukai Jujitsu Kaiden 5th Degree, co-creator of the TRITAC system.
Read full bio →Oz Pariser
MMA & Technical Grappling Coach
Former pro MMA fighter (4-1). BJJ black belt plus black belts in Kobukai Jujitsu and Kyokushin.
Read full bio →Chris Ahearn
Head Strength & Conditioning Coach
Head S&C coach. NASM + ISSA certified, 12+ years training fighters and general-population clients.
Read full bio →Ruben Gallego
Combatives & Self-Defense Coach
Lead combatives coach. Certified Defence Lab instructor with international teaching experience.
Read full bio →



