HIIT Instructor (part-time & substitutes)

trustmark· Health Fitness Corporation
Apply Now ↗
📍 Boston, MAPart time

About this role

HealthFitness, a Trustmark company, is a proven leader in providing fitness solutions that engage and connect people both on-site and online, to create a strong community of health. Our work focuses on creating meaningful connections with each of our participants to help them move forward. We foster each individual’s journey by creating communities of health within the organizations we serve – so that everyone is supported. As an employee of HealthFitness you will enjoy a variety of health and financial benefits and receive competitive pay. We provide personal and professional support, training and development and flexible employment opportunities.

About the role

Are you passionate about helping others achieve their health and fitness goals? HealthFitness is seeking dynamic, motivated HIIT Instructors to join our vibrant fitness team at a premier client site in Boston, MA! This flexible role is offered as either part-time (teaching 1 class per week) or substitute/as-needed/fill-in (number of hours working depends on demand and scheduling)!

In this role, you’ll have the opportunity to make a meaningful impact—guiding members through fitness classes, delivering top-notch training sessions, and empowering individuals to be their best selves. If you thrive in a people-focused environment and love inspiring others to live healthier lives, we’d love to connect with you!

In this position you will provide fun, effective, and safe group exercise to members participating in our High Intensity Interval Training program!

Minimum Requirements

  • Current group exercise instructor certification from ACE, AFAA/NASM, ACSM, NETA, NCCPT required.
  • Adult CPR/AED certifications from American Heart Association, American Red Cross or American Safety & Health Institute required.
  • 2+ years group exercise instruction experience strongly preferred.
  • Ability to navigate electronic onboarding and timecard systems required.

Compensation: $50.00/hr $65.00/hr. Pay is dependent on experience and qualifications. Additional commission opportunities for someone with an industry recognized and HealthFitness approved Personal Trainer certification. The final wage offer will be determined based on factors such as location, qualifications, experience, skill set, and other relevant factors.  We understand that compensation is an important factor when considering a new opportunity, and we strive to provide a competitive wage within the market.

Brand: HealthFitness

HealthFitness is committed to leveraging the talent of a diverse workforce to create great opportunities for our people and our business.  We are an equal opportunity employer, including disability and protected veteran status.

Frequently Asked Questions

Is the salary disclosed for the HIIT Instructor (part-time & substitutes) position at trustmark?
The salary for this HIIT Instructor (part-time & substitutes) role at trustmark is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the HIIT Instructor (part-time & substitutes) position at trustmark located?
This HIIT Instructor (part-time & substitutes) role at trustmark is based in Boston, MA. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the HIIT Instructor (part-time & substitutes) role at trustmark full-time or part-time?
This is listed as a Part time position. It is posted as a HIIT Instructor (part-time & substitutes) role in the Health Fitness Corporation department at trustmark.
Which team or department does the HIIT Instructor (part-time & substitutes) at trustmark belong to?
This HIIT Instructor (part-time & substitutes) position is part of the Health Fitness Corporation department at trustmark. See the full job description for more information about the team structure and responsibilities.
How do I apply for the HIIT Instructor (part-time & substitutes) position at trustmark?
Click the "Apply Now" button on this page. You will be redirected to trustmark's official application portal hosted on workday where you can submit your application directly.
When was the HIIT Instructor (part-time & substitutes) job at trustmark posted?
This HIIT Instructor (part-time & substitutes) position at trustmark was posted on Jul 15, 2026. Apply as soon as possible — early applications are often reviewed first.
HIIT Instructor (part-time & substitutes)
trustmark
Apply for this role ↗

You'll be redirected to trustmark's official application page on Workday.