Job Description. Job Description. Benefits. 401(k). Bonus based on performance. Company parties. Training & development. WE ARE GROWING AGAIN. Full-time and part-time positions available (MUST BE AVAILABLE WEEKENDS). About the Company. My Gym Childrens Fitness Center is a 600 locations strong international corporation offering the BEST recreational fitness and gymnastics programs and blowout birthday parties for children ages 6 weeks to 10 years ...