Our Instructors

Photo by Combat Sports Coverage

Jeff Isacksen

Head Instructor, Owner

Jeff Isacksen came to his first Krav Maga class in 2011, hoping to better learn how to be an ally and protector to his friends and community.

In 2014, he became a certified instructor and began sharing the art of defense with others. Jeff’s desire to expand his own training and offer the most knowledge that he can to his students has led him to pursue training in other arts. He studies kickboxing, wrestling, and Jiu Jitsu in addition to Krav Maga.

Jeff is the 170lb Texas Catch Wrestling Coalition champion and the 165.

Jeff’s students know him for his sharp sense of humor, his emphasis on refining techniques, and his belief in drawing on knowledge from many different arts.

Krav Maga Black Belt | Krav Maga Alliance
2X 170lb Texas Catch Wrestling Coalition Champion
185lb Texas Catch Wrestling Coalition Interim Champion
2X CSC Grappling 165lb Grand Prix Champion
Brazilian Jiu Jitsu, Blue Belt
NSCA Certified Personal Trainer
CPR Certified

Kaci Kai

Founder, Chief Executive Officer, Owner

Kaci began training in Krav Maga in 2008 in a Women’s Self Defense course and was immediately hooked. Krav Maga made her feel confident, powerful, and capable in her body, and she couldn’t get enough of it.

Krav Maga was a gateway martial art. She has also since trained in no-gi Brazilian Jiu Jitsu and kickboxing. In 2016, she spent 2 years traveling the world training with some of the best. Bangkok, Thailand was her favorite (the people were so generous and excited to teach Thailand’s brutal national sport, Muay Thai). Montreal, Canada was the hardest (training with professional UFC and MMA fighters taught her the level you have to train at to compete).

In 2018, she founded Krav Maga ATX out of a desire to create a more inclusive, thoughtful, and welcoming Krav Maga community. Her team knows they can count on her for her sound business mind and her incredible work ethic. Her students can expect a passionate Kravist with a big heart and an unwavering desire to help her students get better.

Krav Maga Level 2 Instructor | Krav Maga Alliance
CPR Certified
Mental Health First Aid Certified
Stop the Bleed Certified
altMBA Graduate (altMBA 2) & altMBA Coach Alumnus

Kelsey Ingerto

Bag Fit Instructor

Kelsey became passionate about group fitness in 2010, while attending the University of Florida. While there, she completed an Athletics and Fitness Association of America (AFAA) certification and became a cycling and resistance training instructor. She is an avid pursuer of many different types of fitness—including studio cycling, CrossFit, yoga, HIIT, cardio kickboxing, and more—but she didn’t find a gym community that felt like home until stepping into Krav Maga ATX in 2019.

You can expect Kelsey’s classes to be fun and inclusive. She hopes you’ll leave feeling sweatier, stronger, and a little more confident than when you came in.

Krav Maga Level 2 Student
AFAA certified
CPR Certified

Glenn Kasabian

Grappling Instructor

Glenn is a Brazilian Jiu Jitsu purple belt who has been practicing the art for 8+ years. He has several amateur MMA bouts under his belt.

Glenn’s teaching style is oriented towards a fun, accessible approach to martial arts. You can expect him to be a knowledgable instructor who builds community and leadership into his classes.

Brazilian Jiu Jitsu, Purple Belt
Registered Yoga Instructor (500 hour)
CPR Certified
EMS Certified

Max Proctor

Krav Maga Instructor, Bag Fit Instructor

Max is a long-time student of Krav Maga, retired military after serving for 8 years in the Air Force, and a certified handgun instructor.

Max’s students can expect an enthusiastic instructor that loves to crack jokes. He’s also known to make you work for a MaxMinute™ (which seems a wee bit longer than the normal 60 second minute).

Krav Maga Level 1 Instructor | Krav Maga Alliance
Krav Maga Level 4 Student
CPR Certified
Basic Pistol Instructor | National Rifle Association
License to Carry Instructor | Texas Department of Public Safety
Level III Security Instructor | Texas Department of Public Safety

Michael Ortiz

Kickboxing Instructor, Bag Fit Instructor

Michael started his Krav Maga journey in 2014 because, like so many others, he needed a change. After playing many high-level sports throughout his life, including football, basketball, baseball, and track and field, he developed an immediate passion for Krav Maga. He fell in love with the community, the discipline, and the challenge of it all.

Michael quickly rose through the levels, not because of his athletic background, but because of his mindset: to learn how to protect others, help them feel confident both physically and mentally, and protect themselves. He’s pursued other martial arts in service of this mindset, including kickboxing, boxing, and Brazilian Jiu Jitsu. Michael also competes in amateur kickboxing and boxing.

Michael’s students can expect him to be a technical instructor who is absolutely hilarious/quick witted (words by him) and an instructor whose focus is to make his students better on and off the mats.

Krav Maga Level 3 Student

Sean Lim

Krav Maga Instructor, Bag Fit Instructor

Sean is a lifelong martial artist with a wealth of experience. He holds a black belt in Taekwondo and he’s an active student in Krav Maga, Muay Thai, and Brazilian Jiu Jitsu.

Sean’s students can expect him to be an easygoing, levelheaded instructor with a wealth of knowledge and a mean lead leg kick. (And he’ll teach you how to improve your kicks too!)