Meet The Team

Karl Josefsson, co-founder of SF Bay Development, is a versatile midfielder and defender from Stockholm, Sweden. He plays collegiate soccer at the University of San Francisco. Karl has experience at both the club and international levels, having played for Djurgårdens IF in Sweden from youth academy to U-21. Also representing Taiwan's national team for both youth and men competing in numerous competitions. Known for his great experience and passion for soccer, he combines his on-and-off field knowledge with his dedication to youth development at SF Bay Development.

Dereck Valentine,co-founder at SF Bay Development, is a former NCAA Division 1 soccer player at the University of San Francisco. A former member of the Costa Rican National Team (2015-2019), Dereck earned a gold medal at the U16 Male Central American UNCAF Tournament in 2017 and was part of the CONCACAF U-15 Championship in Tampa, FL. His extensive experience fuels his passion for developing young athletes at SF Bay Development.

Caleb Gordon, a coach at SF Bay Development, is a talented defender from Murrieta, California. Standing 6 feet tall, Caleb currently plays collegiate soccer as a freshman at University of San Francisco, where he’s known for his athleticism and strong defensive skills. With a deep passion for the game and experience at a competitive level, Caleb brings his knowledge and enthusiasm to coaching young athletes, helping them develop both their technical abilities and love for soccer. His approachable style fosters a fun and motivating environment for kids.

Kaleb Afsari, a coach at SF Bay Development, is a skilled midfielder from Sacramento, California, and currently a sophomore at the University of San Francisco. As a freshman, he appeared in 14 matches, showing strong playmaking abilities. In high school, Kaleb earned All-League honors twice and led his team to a Delta League championship. Known for his tactical awareness and love for both math and science, Kaleb brings a balanced and enthusiastic approach to coaching, helping young players enhance their skills and love for the game.

Kian Jones, a coach at SF Bay Development, is a dynamic midfielder from San Francisco, California. Currently a sophomore at the University of San Francisco, Kian has demonstrated his playmaking skills, recording both his first collegiate assist and goal during the 2023 season. A standout in high school, he was a 3-time All-WCAL Second Team selection and led his team to multiple championships. Known for his dedication both on and off the field, Kian brings his passion for soccer and tactical expertise to coaching, helping young athletes develop their skills.

Coach Mason Dougherty brings a wealth of experience and passion to SF Bay Development. Standing at 5'11" and hailing from Seattle, Washington, Mason is a talented midfielder with a solid collegiate soccer background. A junior at the University of San Francisco, he has demonstrated his skills on the field, making notable contributions during his freshman and sophomore years. Mason’s high school career at Shorecrest High School was distinguished by All-Wesco First Team honors and participation in the ECNL national selection game.  At SF Bay Development, Mason’s extensive playing experience and strategic understanding of the game make him an invaluable asset to our coaching team.

Originally from Keller, Texas, Coach Brayden Beason brings a dynamic offensive mindset and international experience to SF Bay Development. Standing tall at 6'2", he plays as a forward and is currently a freshman at University of San Francisco, where he's already made an impact in his first season, playing in 7 games, recording 7 shots, and netting 2 goals. Prior to college, he spent a year in Spain training with various professional teams, gaining invaluable experience abroad. Passionate about helping young athletes develop their skills, Coach Brayden is committed to guiding the next generation of players.

Coach Joe Core is a dedicated defender and graduate student from Arlington, Virginia, who brings both leadership and experience to SF Bay Development. Standing at 6'2", he has played collegiate soccer at William & Mary before continuing his athletic and academic journey. Known for his solid defensive skills, Coach Joe has appeared in multiple games at the collegiate level, adding strength and discipline to the backline. Off the field, he enjoys fantasy football, trying new foods, and spending time with family and friends. His favorite piece of advice, passed down from his dad, is to "make good decisions," and it's a principle he carries into his coaching to help guide young athletes both on and off the field.

Chris Maldonado is a skilled forward from San Rafael, California, and a coach at SF Bay Development. Currently a sophomore at University of San Francisco, Chris was named to the All-WCC Freshman Team in 2023 after a strong collegiate debut, where he appeared in 16 games and recorded his first goal and assist. A standout at Terra Linda High School, he earned accolades such as First Team All-MCAL and Terra Linda Male Athlete of the Year while leading his team to multiple championships. Chris also plays for the Guatemalan national team and is passionate about helping young athletes from his home-ground, grow and succeed.

Olivia, a talented midfielder from Portland, Oregon, brings energy and skill to SF Bay Development. Standing at 5'6", Olivia is currently a sophomore who had an impressive freshman season in 2023. She appeared in 15 games, scoring three goals and recording two assists, earning her a spot on the All-WCC Freshman Team. Known for her quick footwork and vision on the field, Olivia is passionate about helping young athletes develop their game, whether they're aiming for fun or high-level competition.