Our Team

S.E.E.K. Arizona is committed to providing superior behavioral health services, professional therapies, and direct care supports to both children and adults with developmental and behavioral disabilities, specializing in those on the autism spectrum. We will help each individual reach their full potential in both family and community settings through developmentally appropriate interventions tailored to the strengths and needs of each person.

Jessica L. Irwin, M.Ed., BCBA

President and Chief Executive Officer
Jessica received both her Bachelor’s in Psychology and Master’s in Education from Arizona State University, becoming a licensed behavior analyst in 2012. Ms. Irwin has worked in the Arizona health and human services sector since 1995, founding S.E.E.K. Arizona in 2003. She has since grown S.E.E.K. Arizona to service clients with developmental and behavioral disabilities of all ages in both classroom and in-home capacities, as well as provide professional therapy, scholastic consultation, and behavioral health services to a variety of populations of children and young adults. Ms. Irwin currently oversees the senior-level staff and financial obligations, while providing clinical direction and behavioral strategies for RBHA-funded clients. As a behavior analyst, Ms. Irwin is also responsible for collaboration and networking with other agencies in the Phoenix-metropolitan area to ensure clients have greater access to evidence-based treatment opportunities.

Jessie Gillam, MC, LPC

Chief Clinical Officer
Jessie joined the S.E.E.K. Arizona team in June 2017, providing clinical oversight and leadership to all program operations. She received her Master’s Degree in Counseling from University of Phoenix and her Bachelor’s degree in Psychology from Arizona State University. As an Arizona Licensed Professional Counselor and a National Certified Counselor, she began her career with children in 2001 as a home visitor to at-risk parents through Southwest Human Development. Mrs. Gillam held various leadership roles in children’s mental health at Arizona’s Children Association including Vice President of Statewide Behavioral Health. More recently she served as the Chief Compliance Officer at Florence Crittenton responsible for contracts and administrative leadership of programs and services. Throughout her clinical and administrative experience, she has received extensive training and has vast knowledge of the effects of trauma and infant brain development. Mrs. Gillam has led several operational improvements initiatives and created new programming in the children’s behavioral health system.

Kathy Kelley

With over 30 years of social, non-profit, and service experience, Kathy brings her expertise in accounting and resource management. Prior to joining S.E.E.K. Arizona, Kathy was the Director of Grants Management and Special Projects during a management transition period for Tumbleweed Center for Youth Development which provides services to unaccompanied youth in the greater Phoenix area. Over the course of her career, she has also optimized systems and procedures, worked with management to position a private software publishing company for sale, and participated in the development and execution of strategic plans and reorganizations. Kathy began her career working with several public accounting firms with a focus on physicians, small hospitals and nursing homes. During her tenure in quasi-governmental services, she was a recipient of a US Presidential award for best practices. Kathy’s past affiliations include being a trained Boy Scout Leader, a Tempe community theatre board member, and an active member of the International Association of Amusement Parks and Attractions. Kathy was also one of the first graduates in ASU’s Non-Profit Management Certification program.

Jenna Hamilton

Behavioral Health Program Manager
Jenna moved from Southern California to Arizona in 2005 to attend Arizona State University. She joined S.E.E.K. Arizona as a direct care provider and went on to join the administrative team after she earned her Bachelors’ degrees in Special Education and Elementary Education, with a minor in Family & Human Development in May 2010. She recently completed a post graduate certification program in Behavior Analysis through the Florida Institute for Technology. She is certified and credentialed to teach in Arizona and has been a member of our team since 2006. S.E.E.K. Arizona is proud to have Jenna overseeing the Early Learning Center classrooms. When Jenna is not in the classrooms, she provides administrative leadership and support for S.E.E.K. Arizona’s behavioral health department.

Michele Clarke, M.ED.

HCBS Program Manager
Michele earned her Bachelor’s Degree in English and Master’s Degree in Education from Lehigh University and has taught various grade levels from pre-k through 6th grade since 1998.  She wrote curriculum for the education department of her local PBS television station in her hometown in Pennsylvania and facilitated parent/child classes regarding literacy, cyber safety, and financial awareness.  Michele also taught continuing education classes to teachers and utilizes her expertise in literacy to support the teachers in the Early Learning Center.  She has been with S.E.E.K. Arizona since 2012.

Sara Van Winkle

Developmental Preschool Director
Sara, a native to Arizona, earned a Master’s degree in Childhood Studies from the University of Wales (United Kingdom), a Bachelor of Education from Arizona State University, and has several TESOL (Teaching of English to Speakers of different Languages) certifications from the American TESOL Institute. While in the United Arab Emirates, Mrs. Van Winkle taught Kindergarten at an international school, was an early education consultant for a group of investors, and served as the Director of Curriculum at a training company. She has also assessed preschools for Arizona’s Quality First Program, taught the HighScope curriculum at ASU’s Child Development Learning Lab, and was a police volunteer with the Phoenix Police Department’s Missing Persons Unit. Additionally, she has conducted research in childhood studies at a Reggio Emilia school in Sweden and within the Forest School Wales program. On her spare time, Mrs. Van Winkle likes to cook, outdoor activities, and spending time with her family.