Our Staff

Jim profile pic Jim Dowling
Owner and Founder



DSC9583 Oliver Mullin
TNT Aussie Extreme Head Coach, Competitive Elite Athlete

Oliver Mullin has been coaching for for over 16 years. He has been coaching Trampoline and Tumbling with Jim Dowling since 2009 and has a coaching background in cheer tumbling and artistic gymnastics.  He is a professional member and safety certified in both USTA & USAG.

Oliver spent 8 years of his childhood in artistic gymnastics before switching to competitive Allstar cheerleading in high school.  He continued cheerleading in college at both Georgia Tech and one year at Hawai’i Pacific University.  After graduating from Georgia Tech in 2008, Oliver met Jim and was introduced to the sport of Trampoline and Tumbling.  He has won two USTA national championships in Trampoline - 2012 & 2015, and continues to compete to this day.

Oliver is also a licensed CPA in Georgia and works as a corporate financial accountant at Elavon, Inc, a subsidiary of US Bank. His favorite part of coaching is seeing the excitement on an athlete’s face when he or she achieves a new skill or execute an incredible routine.



73539707101580628721607151586653999673638912n Ema Jones
TNT Pre-Team Head Coach, TNT Team Coach

Ema started coaching gymnastics in 1993 when she was 16 years old. She grew up doing gymnastics and then coaching, now over 20 years later, she has the same passion in coaching as she did back then. Ema has coached our TNT competitive team since 2010. She is now our TNT Pre-Team Head Coach and coaching our competitive team. She still coaches gymnastics classes and team at the YMCA.

Ema is originally from the United Kingdom. She has a 12 year old daughter who also grew up in the gymnastics world, but was then introduced to trampolining and tumbling. She loves it and is hooked just as much as Ema is. "I couldn't think of a better job, than the ones I have. Watching not only my child but all the other children I teach, achieve goals they work so hard for and leave practice with a smile. I love it."

DSC9466 Ryan Baker
Power Tumbling Coach, Tumbling Instructor

Ryan has over ten years of experience in cheerleading and tumbling. While attending Ball State University he was on the cheerleading squad which placed in the top 15 in the nation in Division 1 during each of his four years. While a member and captain of the team, he also coached his college squad for two years. Ryan conducted many Ball State cheer camps with instruction on cheering and tumbling at the college level. In addition, he instructed camps for the Universal Cheerleading Association for five years. He has also judged numerous Universal Cheerleading Association Regional events.

For the past five years he has coached both senior and junior competitive cheerleading squads as well as middle school and high school squads. He is USASF certified levels 1-5, and certified in CPR. Ryan holds a Liberal Arts degree with an emphasis on Exercise Science.

DSC2989 Dezion Fuller ("Coach D")
Instructor for TNT, Ninja Zone, and Tumbling classes

Dezion Fuller has been coaching since 2011. He started as a tumbling coach at the age of 15 at MAX Cheer/Midwest Athletics Extreme in Tulsa, Oklahoma. Dezion moved to Georgia in late 2013 and started working with Jim Dowling as a power tumbling and trampoline instructor in 2014. In 2015, Dezion helped opened our new facility ... literally with much of the actual manual build out! Today, "Coach D" is our head instructor for Ninja Zone, and also instructs TNT team and rec classes and tumbling classes.

In high school, Dezion cheered his junior and senior year and also did competitive Allstar cheerleading. He competed in Regionals, Nationals and Worlds for high school cheer and came in 2nd place in the NCA Nationals for Allstar cheer. Dezion was also a a break dancer for a Christian dance crew and dance instructor. 

Dezion is also certified in massage therapy.




IMGF8BF3F995EE7 1 Emily Dowling
TNT Pre-Team Coach, TNT Rec Instructor, TNT Advanced Athlete

Emily started competing in TNT in 2009 when she was 11 years old. She began coaching TNT classes and pre-team when she was 15 years old. Emily was on our TNT team until 2019 competing in the advanced division. She now coaches team and pre-team.

Emily graduated from Kennesaw State University May 2020 majoring in psychology, minoring in statistics. She would like to obtain her Master's Degree in Sports Psychology or Bahavioral Psychology.



DSC9662 Irina Yakovleva
Rhythmic Gymnastics Coach

Coach Irina is an ex-competitive award-winning gymnast, who has dedicated herself to her favorite sport for over nine years. She came to the US from Ukraine, where rhythmic gymnastics is a very popular and is considered the most preferred sport for girls. She earned her medals in State and National championships, and also participated in multiple concerts and stage performances. Although Irina graduated with MS in Applied Math and Computer Science from National Technical University of Ukraine, she was drawn to coaching rhythmic gymnastics by fate, desire, and passion for this sport. Irina is a head coach of Solo Rhythmic USA Gymnastics competitive team. Her students have earned awards at USA Gymnastics State, Regional and National championships. Irina served as the Georgia State Chair Representative for USA Gymnastics Rhythmic program. Besides that, she choreographs for theatrical performances. Irina choreographed dance and gymnastics compositions for theatrical performances “Vesennie potehi”, “Buratino”, “Zimnyaia Skazka” , etc. in Atlanta.

Irina is a Safety Certified Professional member of USA Gymnastics with over 16 years of the coaching experience in Atlanta.



DSC2 Carson Csoka
Carson Donihoo started off his teaching career as a martial arts instructor in 2010 and
has now been instructing tumbling since 2014. He was on a competition cheer team for 2 years.
He was also world champion, (not to toot his own horn) alongside Taylor Lautner in martial arts and tricking.
Coach Carson loves teaching and watching his students grow.
Outside of teaching he likes to read and spend time with his family.  



DSC2945 Corey Diamond



DSC1791 1 Amber Fulljames
Instructor for Tumbling, TNT Rec, and Adult TNT

Amber has been an elite gymnast for nine years now, an Austrialian National team member since the age of 14 and in international competitor since the age of 14. Amber was a national champion in 2005, as well as a runner up in 2006 & 2007. She was Queensland development gymnast of the year 2005, Queensland senior gymnast of the year 2006, 2007, 2008, and Quest newspaper winner of sporting category in 2008. 



DSC1780 2 Ahmahd Thomas
Instructor for Tumbling, TNT Rec, and Adult TNT

Ahmahd is a ISSA certified personal trainer, he began training in acrobatic movement 20 years ago and has since performed in multiple shows by Cirque De Soleil including Mystere, The Beatles 'LOVE', and Volta, as well as performing in the 2012 Olympic Games opening and closing ceremonies. 


DSC1793 Nicole Yakovieva
Instructor for Rhythmic Gymnastics Beginner and Intermediate classes

Nicole Yakovlev is one of the rhythmic gymnastics coaches at Jump TnT. She has 10 years of rhythmic gymnastics training, 6 of those years were competitive, 2 years of ballet training, and a bit of circus and martial arts training. Nicole has been teaching rhythmic gymnastics to kids of all ages for about 4 years now and has enjoyed it greatly. Her classes are a mixture of skill, coordination, balance, mobility, and most importantly, fun and enjoyment during the learning process. She hopes to get the kids who come to her classes to not only learn new skills, but to challange themselves and set their own intentions in order to reach their goals.




DSC6369 Neely Grimsley
Instructor for Lil Roos Classes

Neely Grimsley is a senior at Johns Creek High School and has been competing in trampoline and tumbling for almost nine years, and also does diving. She has a love for the sport and enjoys being able to pass down skills learned from her coaches to the younger generation of athletes.