The Team

Josh Plosker

Founder & CEO

Josh Plosker got his start in CrossFit nearly a decaede ago. In 2012, he opened Reebok CrossFit Back Bay, which became Invictus Boston in 2018. He is passionate about the fitness industry and bringing health and wellness to everyone who walks through the doors of our facilities.

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Dan Pious

General Manager

Dan doesn’t like to be in the public eye, and he definitely wouldn’t want us to tell you that he won The Amazing Race back in 2010, so we won’t do that.  Dan has been happily married to his wife Jamie since 2018, and loves Boston sports and pizza.  Dan spends most of his time in the office hanging out with his dog nephew Bubba.

Rob Mireles

Manager & Head Coach

I used to own and operate traditional globo-gym style fitness franchises. After finding CrossFit, my personal motivation and how I helped clients completely changed. I went on to coach, manage, and even open new CrossFit facilities for 6 years in the Middle East. Since returning to the USA, Boston has become home and I'm excited to be a part of the Invictus team!

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Justin Wright

Director of Operations & Coach

I grew up playing video games and exercising minimally. From there, I ended up wrestling in 5th grade and stuck with the sport through the end of high school (I also recently did a tournament as an adult which may or may not have been a bad idea). I found CrossFit in 2008 while rehabbing from a back injury and never looked back. I spent a career competing, ultimately making it to the CrossFit Games in 2016. I have a degree in Chemistry and a love for film, and now you can find me working out while complaining about <insert joint here> pain.

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Kiefer Lammi

Programming Director & Coach

I received my degree in Exercise Science from UCONN in 2013 where I walked-on and competed as a member of the Men's basketball team for 2 years and did NOT win a National Championship ring (Yes, I'm still bitter about it). I've competed in and coached athletes for Powerlifting and Olympic Weightlifting and even had a short stint where I thought I was into Spartan races and running, but then I came to my senses.

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Cam Burke

Programming Manager & Coach

I started getting into CrossFit and fitness overall when I was 17. At 21 I began coaching at a gym in Salem, MA. I've been at Invictus for almost 3 years, right after I graduated from Salem State University with a degree in Sports Movement Science. Outside of the gym life, I spend my time kicking with friends and family, especially my niece. Listening to music, and. riding my bike and occasionally shooting hoops when its nice out.

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Bern Prince


I have been a fitness professional for over 15 years with 5 nationally accredited certifications.

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Steph Chung


I spent my youth and college years as a competitive gymnast, then picked up CrossFit recreationally in 2013. I lived in the Middle East for 5 years after college, teaching biology and later full-time coaching CrossFit. I've also been competing in the sport of CrossFit professionally for 4 years and just recently went back to school to be a Physician Assistant! When I'm not in the gym or studying, I'm spending as much time cuddling with our dog Kiah and chasing her around the park with her squeaky toys.

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Tia Sapienza


I grew up in the suburbs just south of Boston and spent the majority of my life playing competitive softball. After wrapping up my college softball career, I found CrossFit and haven’t looked back. I’ve spent the last 10 years of my professional career working in physical therapy at Brigham and Women’s Hospital. I have a Black Lab/Great Dane named Wilson and I love visiting my friends in Hawaii.

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Tola Morakinyo


I grew up in Columbia MD I fell in love with training at a very young age and was always active playing lots of sports growing up and through college

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Molly Berksttresser


I grew up in Old Forge, NY. I am 1 of 6 siblings and 1 of 3 that coach Crossfit! My athletic background started on the ski slopes with downhill & cross country skiing then on to soccer in college (SUNY Brockport) and then I was lucky enough to compete for 6+ years in the sport of Crossfit.

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Originally from Upstate New York, I made my way to Massachusetts to pursue my graduate degree in Exercise and Sport Studies. This is where I discovered CrossFit as well as my love for Nutrition Coaching. I have always been interested in what fitness and nutrition can do for a persons health and well-being and I love to be able to see actual change within a person and for them to be able to see that too.

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I'm a former college athlete (basketball and softball) who found my way to CrossFit late in the game and fell hard. Outside of fitness, I'm a medical speech-language pathologist, a graduate professor, and a certified brain injury specialist with a passion for maximizing functional recovery through fitness. I love to travel and am always on the move. I rarely sit still and I love snacks. I have two dopey hound dogs who love exercise and food as much as I do, but have me beat in the laziness category.

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Justin Bartels


I'm a midwestener at heart, but spent 10 years living in Montana before moving to Boston. I love all things movement and exploring outdoors. I've canvassed just about every pizza joint in Boston so let me know if you need recommendations!

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Matt Freda


Although originally from the greater Boston area, I enlisted in the Navy right after high school and was based in San Diego and Bahrain for 7.5 years. Now I am back in Boston for school to pursue a B.S. in Exercise Science and eventually a Doctorate in Physical Therapy. I have a CF-L1 and am CPR /AED certified. Ironically, I have the most unathletic Australian Shepard named Leo.

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BEn Bates


I was born and raised in a small town in New Hampshire. From a young age I fell in love with sports, playing football, basketball, and baseball and continued my baseball career when I went to college. It was during college when a Resident Director in my dorm introduced me to crossfit, and I immediately fell in love with sport. When I'm not in the gym you can find me in the outdoors hunting, fishing or hiking with my family and dogs.

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© 2023 by Invictus Boston

Hours of operation 

Monday-Friday: 5:30am - 8:00pm

Saturday: 8:00am - 12:30pm

contact us

209 Columbus Ave

Boston, Ma 02116