Coaching Staff
Head Coach
Blue Group Lead Coach
Katie joined the RAC coaching staff in 2012. She grew up swimming for RAC and is a graduate of Radnor High School. Katie attended Penn State University, where she competed in the sprint freestyle events. She was an All-American, school record holder, NCAA qualifier, and Big Ten Champion at PSU. Katie has a B.S. in Elementary Education from Penn State and a Master’s in Education from La Salle University. During her tenure at RAC, Katie has been the Red Group Lead Coach, Bronze Group Lead Coach, and was previously the Head of Group Development. She has trained and prepared age group, high school, and collegiate athletes to compete at an elite level. In addition to her role at RAC, Katie is a fifth grade teacher at The Haverford School and the head swim coach at Aronimink Golf Club.
Head of Development Program
Mini Lead Coach
Margaret joined the Radnor Aquatic Club coaching staff in 2021. She lives in Bryn Mawr with her two children, Cash and Farrah and husband Steve. Growing up in this area, she swam for local programs, including Foxcatcher, UMLY, and Aronimink Golf Club. Agnes Irwin honored her as Most Valuable Swimmer two years in a row, and then she graduated from The University of North Carolina where she swam with scholarship for their NCAA Division 1 & ACC Championship Teams. She continues to swim with US Masters programs, and loves to run too. She hopes the RAC Developmental Groups & Mini swimmers learn to love the sport of swimming. "You swim much faster when you are having FUN"!
Bronze Group Lead Coach
SAL Girls Lead Coach
Chase joined the RAC coaching staff in 2001 and has coached competitive swimming and recreational basketball in Radnor Township since 1999. He swam for Radnor High School and Radnor Aquatic Club. Chase graduated from Villanova University School of Business with a Bachelors in Accounting and Finance & a Masters in Finance and Strategic Management. Chase is a Certified Public Accountant with New York Life.
Assistant Coach
SAL Boys Lead Coach
Mary Beth Bonner-Ryan joined the RAC swimming staff in 2005. She swam competitively for Finnegan's Swim Club in Philadelphia, with Backstroke as her primary stroke. In college, she was a voice/music major and uses those skills as a professional cantor and as the lead vocalist in an Irish band. In addition to to her role as the mother of 3 swimmers who went on to become collegiate athletes, including Irish Olympian Shane Ryan, Mary Beth works at Haverford High School with Special Needs students. Mary Beth also currently serves as President on the St. Patrick's Day Observance Association that organizes the Philadelphia St. Patrick's Day Parade.
USA Swimming Coordinator
Jaime joined the Radnor Aquatic Club coaching staff in 2019 and is the current USA swimming coordinator. She swam and completed her undergraduate at Millersville University, and was part of the final Graduate class of Cabrini University in the Spring of 2024. Jaime grew up swimming at Aronimink Swim Club, where she is currently the general manager. She has coached at Marple Newtown High School, Rose Tree Woods Swim Club, and Williamstown High School. Jaime currently teaches 8th grade Math at Clearview Regional Middle School.
Brendan JonesBlue Group Lead Coach
Blue Group Lead Coach
Stephanie joined the Radnor Aquatic Club coaching staff in 2019. Stephanie has been coaching swimming since 2007 and is a former RAC swimmer. She served as an assistant coach for Aronimink Swim Team from 2007-2012 and since 2012 has served as the head coach at Aronimink. She also was the assistant swim coach at Rustin High School from 2014-2018 and is now the assistant swim coach at Haverford High School. Stephanie started her swimming career at Aronimink Swim Club then continued on in high school at Archbishop Prendergast & Radnor Aquatic Club and for one year at West Chester University. She is currently a physical education teacher at Haverford Middle School.
Liz OlszewskiBronze Group Lead Coach
Liz joined the Radnor Aquatic Club coaching staff in 2022. Liz graduated from Lehigh university in May of 2022 where she was a member of the Varsity Swim Team, specializing in breaststroke and IM. She previously swam with the Suburban Seahawks Club for 12 years as a member of the NCSA team. Liz graduated with a BS in Finance and now works at J&J, but is excited to keep swimming in her life by coaching!
Red Group Lead Coach
Jake LeddyWhite Group Lead Coach
Jake joined the Radnor Aquatic Club coaching staff in 2024. He graduated from Lafayette College in the May of 2024 where he was a member and captain of the Varsity Swim Team. Jake has swam for various YMCA and USA club teams around New Jersey, as well as coaching for the Mount Olive Pirates. Currently he is doing engineering work for Linde and is excited to join the RAC team.
Caitlin McDonoughWhite Group Lead Coach
Caitlin started her swimming career at Aronimink Swim Club and continued swimming throughout high school at Upper Darby High School and Lansdowne YMCA. She has been coaching swimming since 2012, where she started as an assistant coach at Aronimink Swim Club. She has also coached for Lansdowne YMCA, Philadelphia Country Club and Swarthmore Swim Club. She currently teaches chemistry at Conestoga High School. Caitlin is looking forward to being part of the RAC team and working with swimmers of all different skill levels.
Kelley VossHead of Lessons Program
Kelley Voss comes from a competitive family that have all swum or taught swimming at some point. Kelley swam for her hometown team, The Dayton Raiders, (out of Dayton, OH) through grade school and the Coffman YMCA through high school before swimming in Atlanta, GA at Agnes Scott College. Kelley coached and taught lessons through her college's program before running her own swim school through Dynamo Swimming umbrella. Upon moving to the Philadelphia area in 2010, Kelley taught lessons for The Jersey Wahoos and privately. In 2015, Kelley became the first female head coach in Saint Joseph's Preparatory School's history where she coached a team of about 35 young men for 3 years before starting her family. During those years, she ran a program for graduating seniors of Cristo Rey High School where she successfully taught over 300 students how to be proficient in swimming. Kelley was the head coach for Covered Bridge Swim Club for the 2017 and 2018 season. She is very excited to be part of the Radnor Aquatics program in the capacity of teaching lessons and being a developmental coach. Outside of spreading the joy of swimming, Kelley likes to spend time with her three kids, doing daily yoga, working on art projects and going on long walks.
Julie StreetAssistant Coach
Julie joined the Radnor Aquatic Club coaching staff in 2014. She swam for Harriton High School, Lower Merion Aquatic Club, and Stony Lane Swim Club, where she is currently a head coach. Julie graduated from The Schreyer Honors College at Penn State with a degree in Finance and currently works for Superior Plus. She’s excited to be a part of the RAC team!
Katie De La RosaAssistant Coach
Katie joined the RAC coaching staff in the winter of 2024. She swam competitively through college, then continued swimming by participating in triathlons and open water events. Katie began coaching in 1999 at Ply-Mar Swim Club. Now that her two daughters are on the team it’s time for her to get back on deck. She really enjoys building relationships with her swimmers. She loves watching them exceed their goals, make friends, become better teammates and develop a love for the sport. Katie is a kindergarten teacher in the Colonial School District.
Assistant Coach
Hannah joined the RAC coaching staff in 2024. She has been coaching on and off for over 25 years, including as an assistant at The Haverford School, where she is currently an Upper School History teacher. A Maine native, Hannah was a member of the Germantown Academy National Champion teams of 1986 and 1987, a Senior Nationals finalist for Team Foxcatcher, and a school and ACC record holder at the University of North Carolina, where she was also a two-time Division I All-American (and lived across the dorm hallway from Coach Margaret one year!). She loves working with kids of all ages, and the smell of chlorine makes her smile.
Assistant Coach
Patrick CaseyAssistant Coach
Patrick swam for Radnor aquatic club for 11 years from 2012 to 2022 when he graduated. Now he swims for Villanova University, focusing on distance freestyle. He loves the sport of swimming and is very excited to coach at RAC this year and give back to the club that gave him so much fun.
Antonio OctavianoAssistant Coach
Antonio swim competitively for Radnor Aquatic Club for nine years, from 2011 to 2020. He also swam for The Haverford School, continuing his passion for the sport at the University of Minnesota. In addition, Antonio has spent the past seven summers coaching at Aronimink Golf Club. With a genuine love for working with kids, Antonio is eager to begin coaching at RAC!
Maddie AguirreAssistant Coach
Maddie joined the RAC staff in 2025. With almost 20 years of swimming experience, Maddie is a dedicated swim coach who loves to foster enthusiasm and a hard work ethic in her swimmers. She swam for 14 years at Suburban Seahawks Club (SSC), setting numerous program records and voted team captain. Maddie swam for the Division I Varsity Swimming and Diving team at the University of Wisconsin-Madison. She specialized in distance free-style and IM. While at UW, Maddie was a 3 time Big Ten Meet Qualifier, 3 time Big Ten All-Academic Team, and was named to the dean's list multiple semesters. She graduated in May 2023 with a degree in Consumer Behavior and Marketplace Studies, with certificates in Entrepreneurship and Political Science. Maddie currently serves as an assistant swim coach for Agnes Irwin, works for Free People as an allocator, working on stores financial and assortment planning and is training for a half iron-man.
