Our Team

Founder

Konstantin’s movement journey began over 20 years ago, spanning roles as a group fitness instructor, personal trainer, fitness director, and certified Polestar Pilates instructor. His background as a dancer further deepened his understanding of how the body moves and connects.

After years of helping adults recover from surgeries and chronic pain, he noticed a pattern — most issues were rooted in something that started much earlier: a lack of body awareness. That realization, combined with his experience as a father of two girls, sparked a new mission. He imagined a place where children could build strong, confident bodies long before pain ever became part of their story.

That vision became Green Square — a kids’ movement center rooted in Love, Fun, Mindfulness, and Science. Every program draws on Konstantin’s deep knowledge of Pilates principles, biomechanics, and motor development research, blended with the joy and imagination that make children want to move. A lifelong learner, he is constantly expanding his knowledge through workshops, courses, and the latest research — always bringing it back to the families he serves.

Choreographer, Dance Educator, and Artistic Producer

Born in Ecuador, she trained in classical ballet at the Instituto Nacional de Danza Raymond Maugé, where she earned her B.A. in Dance.

She has performed professionally with Ballet of Teatro Centro de Arte and Danzas Jazz Theater Company in Ecuador, and with Ballet de Cámara at Teatro Municipal in Chile. In the United States, she has danced with Boston Flamenco Ballet, South Florida Ballet Theater, Florida Grand Opera, Staten Island Ballet, Carnival Cruise Lines, BalaSole Dance Company, Ballet for Young Audiences, Neglia Ballet, and various production companies within the entertainment industry.

Karina holds an MFA in Dance from Hunter College and a B.S. in Mass Communications. She is certified in the American Ballet Theatre National Training Curriculum (Primary through Level 7) and holds a teaching certification from the Bolshoi Ballet Academy (Levels 1–4).

She is currently on faculty in the Children & Teens Program at Broadway Dance Center and serves as a judge for The Power of Dance National Competition. She remains committed to teaching with heart, cultural relevance, and artistic integrity.

Katelyn Somers studied ballet at Interlochen Arts Academy and proceeded to receive her BFA in Ballet from the University of Cincinnati College-Conservatory of Music. She spent her final year at university dancing with Cincinnati Ballet before moving to NYC in 2016. She has since enjoyed performing professionally with companies such as East Coast Contemporary Ballet, Staten Island Ballet, Connecticut Ballet, Dances Patrelle, and MorDance. Katelyn currently teaches young movers at the Moise Safra Center, Darien Arts Center, Sokol New York, and Plié Bound Kids. She is dedicated to inspiring confidence, self-expression, and creativity while introducing students to the fundamentals of movement.

Is a BJJ Masterskya Purple Belt under Alex Ecklin and a movement coach with over a decade of training across multiple disciplines. He has studied under renowned teachers such as Ido Portal, Bert MMA, Shai Faran, Martin Kilvady, and Dudi Malka.

His work centers on learning movement and how we can use it to discover ourselves. He is a No-Gi JJWL and Grappling Industries Champion, as well as an IBJJF silver medalist. He believes that through martial arts and movement, we find truth of our mind and body, using movement as a creative tool to cultivate expression in every aspect of life.

He is also a proud father of a 12-year-old son who continually teaches him humility, vulnerability, and the importance of how we show up.

Is a professional dance educator and choreographer with international experience, specializing in classical ballet and folk dance. 

Arsentii was a soloist with the Song and Dance Ensemble of the Pacific Fleet, where he developed a strong stage foundation that combined classical training with the traditions of folk choreography.

Currently based in New York, Arsentii works as a folk dance instructor and serves as the
Chief Choreographer of the Barynya Dance Ensemble. He is involved in choreography, repertoire development, and the artistic growth of dancers.

In his teaching, he views dance as a living language and a powerful tool for personal growth. He emphasizes technique, musicality, and stylistic clarity while creating a supportive and inspiring learning environment. His goal is not only to train skilled dancers but also to help each student develop confidence, artistic expression, and a lasting love for dance.

is a New York City–based dance educator who loves introducing young dancers to the joy of movement. She holds a Bachelor of Fine Arts in Dance from Shenandoah University. Alexa has experience teaching and substituting classes for students ages 2–18 in a wide range of styles including ballet, tap, jazz, hip-hop, acrobatics, contemporary, and early childhood movement. Alexa is excited to join the Green Square team!

With a background in professional dance and a Polestar Pilates certification, Avi is a passionate movement educator who cares deeply about helping people of all ages and abilities feel strong and confident in their bodies. She discovered Pilates while earning her B.A. in Dance from Loyola Marymount University, where it became an essential part of her own journey with injury prevention and healing.

Those experiences shaped her belief that body awareness is something we should nurture from an early age. Avi feels honored to support children as they grow, explore, and build trust in their own movement. She especially loves working with kids because of their natural curiosity, creativity, and the joy they bring to learning new things.

Blending her artistic roots with a strong understanding of anatomy, she brings warmth, attentiveness, and encouragement to everything she does. She believes every child deserves to feel capable, empowered, and at ease in their body, and she loves being part of that journey.

At Green Square, you’re not locked into a single format. Our movement programs are designed to work with different schedules, energy levels, and stages of development.

Explore current offerings, see what’s available, and choose sessions that fit naturally into your routine — today, and as it evolves.