About Us

Early Intervention for Children with Autism in Sutherland Shire

​Mosaic Early Intervention designs specialised programs for children with Autism Spectrum Disorder (ASD) and other developmental delays. We are based in the Sutherland Shire, Sydney NSW. Our passionate, experienced team provides behavioural, school support and early intervention programs tailored to your child’s and families needs.

Children With Autism Specialist Team Sutherland Shire

Our Team

Ashleigh O'Connor Clinical Director

Clinical Director

Ashleigh O’Connor

BSpHSc, Grad Cert (Autism St), MEd (ABA), BCBA, CBA

Ash is the Clinical Director and Behaviour Consultant at Mosaic Early Intervention. She received her Bachelor Degree in Speech and Hearing Sciences from Macquarie University, Graduate Diploma in Autism Studies from Griffith University and Master of Education in Applied Behaviour Analysis from Monash University.

Ash is a Board Certified Behaviour Analyst and a Certified Behaviour Analyst.

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Ash has been supporting children and their families, using the principles of ABA since 2012. She has a special interest in teaching functional communication and language skills to children with Autism Spectrum Disorder (ASD) and other learning difficulties. Ash is passionate about providing high quality, effective, evidence based programs to children and helping them reach their goals.

Amanda

Clinical Team Leader &
Behaviour Consultant

Amanda Valderrama

BBehSc, Grad Cert (ABA), M.Couns, CBA

Amanda completed a Bachelor of Behavioural Science in 2014, and a Master of Counselling in 2016 at the University of Notre Dame. As a part of her Masters degree, she completed her university placement, undergoing face-to-face counselling and facilitating mental health workshops for adolescents.

Amanda is a Certified Behaviour Analyst. 

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Amanda started working at Mosaic Early Intervention in 2019 as a Behaviour Technician, she soon moved into the role of Senior Behaviour Technician and then Behaviour Consultant. In 2023, Amanda became Mosaic Early Interventions Clinical Team Leader, where she provides supervision and support to our clinical team.

Amanda completed her Graduate Certificate in Applied Behaviour Analysis in 2020 and is working towards her certification as a Board Certified Behaviour Analyst.

During her studies, Amanda volunteered in schools, and in social skill groups for children with Autism Spectrum Disorder (ASD). Amanda focused her Masters’ research paper on the benefits of parental involvement in family-centered interventions for children with ASD. Since then, Amanda has worked as an in-home Senior ABA therapist and pre-school shadow on several teams, with children between the ages of 20 months to 7 years old, before beginning her role as Behaviour Consultant.

Amy Harmer Administration

Administration Officer

Amy Harmer

Amy is the Administration Officer at Mosaic Early Intervention. The face behind the phone and computer, the one who manages the day to day aspects of our services. 

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Amy comes from a background of administration and customer service, with experience that varies between fast food to receiving a Cert III in childcare services. Amy had originally planned on being a preschool teacher, but her strengths led her down a different path to become the administration officer at Mosaic.
Amy is always ready for a chat or to assist in any way she can. She thrives on making those around her happy. 
Jess McKay Account Manager

Account Manager

Jessica McKay

Jess is the Account Manager here at Mosaic Early Intervention. After her Higher School Certificate Jess went on and completed a Traineeship that provided an accreditation in Banking and Finance and went on to work in banking for over 5 years. Jess received notable media attention for being an advocate for alternative pathways to professional careers outside of those associated with traditional university degrees.

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Since banking Jess worked in various law firms for 8 years. Since having a child of her own, Jess’ passion has been to work with children. Jess is someone who is always happy to help and is very dedicated to her job. Jess’ cheerful nature projects throughout the Mosaic office and has a lasting effect. This, coupled with her dedication to her managerial duties, makes her a key team member of the Mosaic Early Intervention Team.

Teresa Hoang - Behaviour Consultant

Behaviour Consultant

Teresa Hoang

BSc (Psych), Grad Cert (ABA), M (ABA), CBA

​Teresa has completed a Bachelor of Science majoring in Psychology at the University of Sydney, a Graduate Certificate in Applied Behaviour Analysis at Griffith University and a Master of Applied Behaviour Analysis at Griffith University.

Teresa is a Certified Behaviour Analyst.

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Teresa began work as an ABA therapist in 2016. She started working at Mosaic Early Intervention as a Behaviour Technician in 2019, where she soon progressed into the role of Senior Behaviour Technician and finally Behaviour Consultant. Since then, Teresa has gained experience working with children between the ages of 2 and 7 years old and has worked in various environments such as in schools as a shadow, in clinic and as an in-home therapist.

Teresa is passionate about helping children with ASD and other developmental delays reach their full potential. Her interests include promoting independence of daily living skills, generalisation of skills, parent and family training, and the implementation of ABA programs in the school environment.

Teresa is currently working towards her certification as a Board Certified Behaviour Analyst through the Behaviour Analyst Certification Board (International).

Mikhaela Natta Behaviour Consultant

Behaviour Consultant

Mikhaela Natta

BHSc (Hearing & Speech), Grad Cert Education (Autism), MEd (ABA), CBA

​Mikhaela received a Bachelor of Health Science majoring in Hearing and Speech from Sydney University in 2017, completed her Graduate Certificate in Education (Autism) at Torrens University in 2020, and Master of Education in Applied Behaviour Analysis at Monash University in 2022. Mikhaela is working towards her certification as a Board Certified Behaviour Analyst.

Mikhaela is a Certified Behaviour Analyst.

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Mikhaela’s passion for ABA grew when she began working at Mosaic Early Intervention as a Behaviour Technician in 2019. Over the years, Mikhaela progressed into the role of Senior Behaviour Technician and finally as a Behaviour Consultant.

During her undergraduate studies, Mikhaela completed a practical placement at a preschool, where she gained experience implementing language stimulation activities with their children. During this placement, Mikhaela had the opportunity to work with children with Autism Spectrum Disorder (ASD) and a range of language and developmental delays. Since then, and through further work as an English tutor, as well as experiences as an ABA Therapist, Mikhaela gained a commitment and passionate enthusiasm for assisting children with developmental difficulties.

​Mikhaela strives to help children achieve their full potential and personal goals. Mikhaela has gained a skillset for working in an integrated way with both the children, their families and educators.

Mikhaela began working as a dedicated, full time ABA Therapist in January 2019 and since then has been fortunate to be involved on several teams as both an in-home senior behaviour technician and a school shadow.

Zoe Fuller Behaviour Consultant

Behaviour Consultant

Zoe Fuller

BSc.Psych, Grad Dip (Psychology), M(ABA), CBA

Zoe completed her Bachelor of Science majoring in Psychology in 2019 at Macquarie University and her Graduate Diploma in Psychology in 2020 at Western Sydney University. Zoe has completed a Master in Applied Behaviour Analysis at Monash University and is a Certified Behaviour Analyst.

Zoe started working at Mosaic Early Intervention as a Behaviour Technician in 2019, she soon progressed into the role of Senior Behaviour Technician, until finally moving into her role as a Behaviour Consultant

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Zoe has a keen interest in educational assessment and children’s school readiness. She completed her introductory training to ABA in May 2018 and has worked with a variety of children around Southern Sydney since then.

Zoe is passionate about aiding those with developmental difficulties and teaching them skills for life. She finds the most rewarding part of being a Senior Behaviour Technician is the growth and development children show when learning new skills and gaining their independence.

You can catch Zoe singing and dancing in many of her sessions, she is enthusiastic and builds great rapport with children and their families.

Hannah Wise-Mann Provisional Psychologist

Provisional Psychologist

Hannah Wise-Mann

BSc (Hons), PG Dip MHP, PG Cert CBT-BA

​Hannah has a wealth of experience working in the field of psychology, and trained as a Psychologist in the UK where she worked for 10 years before emigrating from the south of England. Hannah is currently completing a year of supervised provisional practice as she gains full accreditation as a Psychologist in Australia.

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Hannah is a fully trained Cognitive Behaviour Therapist with over 12 years experience working with anxiety and depression for adults and children alike. Hannah initially focused on disorders of anxiety and depression and now specialises in Autism Spectrum and other neurodevelopmental Disorders. She has experience with working under an Applied Behaviour Analysis framework and has been offering therapeutic input for all levels of the Autism Spectrum for a number of years. Hannah’s primary area of research currently is the recognition and diagnosis of ASD in girls.

Hannah’s range of experience allows her a unique insight into the difficulties for all people involved when a child receives a neurodevelopmental diagnosis.

Callie MacGregor Senior Behaviour Technician

Senior Behaviour Technician

Callie MacGregor

BPsychSc (Hons)

​Callie completed her Bachelor of Psychological Science (honours) at the University of Wollongong and is currently completing her Master of Applied Behaviour Analysis at Monash University and working towards her certification as a Board Certified Behaviour Analyst.

Callie’s passion for ABA grew when she started working as a Behaviour Technician at Mosaic Early Intervention in 2020. Since then Callie has moved into the role of Senior Behaviour Technician.

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Developing her passion for working with children through her experience as a dance teacher for children between the ages of 2-15, Callie has a keen interest in working with children with ASD and other developmental delays. Callie understands the integral role of the family dynamic and enjoys working closely with families.

Callie enjoys being active and playing team sports. She is excited to bring her energy, empathy and understanding to each session and is looking forward to watching each child reach their goals.

Rhiannan Winwood Behaviour Technician

Senior Behaviour Technician

Rhiannan Winwood

BSc(Psych)

Rhiannan completed a Bachelor of Science (Psychology) in 2021 at the Australian National University and a Bachelor of Arts (History and English) at The University of Sydney in 2019. She is currently completing a masters in Applied Behaviour Analysis at Griffith University.

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Rhiannan is working towards her certification as a Board Certified Behaviour Analyst/Certified Behaviour Analyst.

Rhiannan is passionate about working with children with ASD and other developmental delays to provide a supportive and understanding environment where they can reach their full potential. She is a fun and energetic person who values the enjoyment of sessions whilst working towards the goals of each child. Her enjoyment of team sports and physical activity is something she strives to incorporate into sessions.

Gab Behaviour Technician

Senior Behaviour Technician

Gabriella Musumeci

BPsychSc

Gab completed a Bachelor of Psychological Science in 2022 at the University of New South Wales. Throughout her degree, Gab developed a strong interest in developmental psychology and a passion for helping children with additional needs. This passion has led her to pursue a Graduate Certificate in Autism Studies at Griffith University, with the intention of completing a Masters degree in the field of ABA in the future.
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Gab begun her career in ABA with Mosaic Early Intervention working as a Behaviour Technician. Gab has experience working with a number of children across all their different environments (home, school, community), and has since moved into a Senior Behaviour Technician role. Gab is passionate about supporting the children she works with to learn new skills and reach their full potential.

Gab’s empathetic and caring nature helps her to create a friendly learning environment and build positive relationships with children and their families.

Rachel Aquilina Behaviour Technician

Behaviour Technician

Rachel Aquilina

BPsych

Rachel recently completed her Bachelor of Psychology undergraduate course in 2022 and is currently undertaking her Honours year at the University of Wollongong. After graduating at the end of 2023, Rachel aims to begin a Master of Clinical Psychology.
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Due to her interest in developmental psychology, Rachel strives to assist children with ASD and other developmental disorders in reaching their full potential and always aims to provide them with a safe and fun environment for them to truly flourish in.

Rachel is a dedicated behaviour technician who strives to improve the lives of the children she works with.

Jas Sutton Behaviour Technician

Behaviour Technician

Jasmine Sutton

Dip (Counselling)

​Having spent many years teaching and working professionally as a performer, Jas developed a deep appreciation for and interest in mental health. In particular, the way mental illness impacted young people within the performing arts industries.

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It wasn’t long before she turned her interest into action and after obtaining her Counselling Diploma in 2020, Jas went on to pursue a Bachelor of Psychology at Western Sydney University, where she is currently in her second year.

Jas has ample experience working with young people and is dedicated to curating safe, supportive and engaging environments where all children are encouraged to express themselves and made to feel accepted.
Caring, kind and considerate in her approach, Jas is passionate about helping every young person she works with, explore and reach their full potential.

Emilia Behaviour Technician

Behaviour Technician

Emilija Gasoska

Emilija is currently in her third year of completing a Bachelor of Psychology (honours) and a Bachelor of Cognitive and Brain Sciences in Macquarie University. With a passion to become a clinical psychologist in the future, Emilija embodies the qualities needed to make a career out of helping people.

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Emilija is determined and enthusiastic towards helping children with ASD and other developmental delays improve their ability to learn and thrive in day-to-day activities. She is always keen to bring fun energy, drive and a kind hearted nature to every session whilst helping each child master their individualised goals.

Alyssa Behaviour Technician

Behaviour Technician

Alyssa Kafetzi

Alyssa is currently in her third year at university studying a bachelor of psychology with a minor in neuroscience. She aims to complete her honours and a Masters in Clinical Psychology to pursue a career in developmental psychology.

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With a background in dance teaching and performing, Alyssa‘s love for working with children grew and she is dedicated to helping children build their confidence in a variety of skill areas

Alyssa strives to assist and work with children of all ages and developmental stages and aims to provide a safe, nurturing and fun environment for growth. She prioritises supporting children in reaching their goals and incorporating family members into these goals.

Lauren Kasbarian Behaviour Technician

Behaviour Technician

Lauren Kasbarian

BPsychSc

Lauren completed her Bachelor of Psychological science in 2022 at the University of Wollongong and is currently completing her Advanced Graduate Diploma of Psychology expected in 2024.
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Lauren is dedicated towards elevating the wellbeing of children through building positive relationships, providing support, and ensuring a safe environment for the child. She has experience working with children of various ages and uses empathetic approaches in order to help them reach their goals. Lauren understands the individual differences of each child with ASD and/or other developmental disorders, demonstrates great patience, and welcomes all children with open arms.
Xaviera Catalan Behaviour Technician

Behaviour Technician

Xaviera Catalan

BPsych

Xaviera completed a Bachelor of Psychology at Western Sydney University in 2022. In 2023, Xaviera aims to gain further qualifications to become a registered counselling
psychologist.

Her ambition is to contribute to student wellbeing and make a
meaningful difference in a young person’s life as a school psychologist.

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Xaviera worked as a Educational Leader for Before and After School Care for 3 years. She has extensive experience working with children of all ages and cultures and their
families.

Xaviera’s nurturing personality shines through during her therapy sessions. Her approach is child-centred and family-focused.

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Behaviour Technician

Georgia Muriti

Georgia is in the third year of her Bachelor of Psychological Sciences at university. She is working towards her honours year in order to pursue a masters in a field of psychology.

Georgia has an extensive background working with children for over 8 years as a music teacher and enjoys combining this experience with her psychology background. She is passionate about creating supportive relationships with children to help them achieve their goals and thrive.

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Through her studies, Georgia has developed a keen interest in developmental psychology as well as psychological research and hopes to combine these fields to support young people in their day to day lives.
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Behaviour Technician

Chloe Harris

Chloe is currently in her 4th year of a Bachelor of Psychology (honours) at Western Sydney University, with hopes to continue her studies further through a Masters of Psychology (Clinical).

Chloe has worked as a Contact Supervisor for children, creating a safe and comfortable space for families to bond and reconnect. Chloe is passionate about helping children thrive in their environment and building positive connections with the people in their life.

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Chloe’s passion for working with children has strengthened over the course of her degree and workplace experience. Her nurturing and empathetic personality, enables her to create a safe and encouraging environment that supports the development and growth of children, empowering them to achieve their goals.
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Behaviour Technician

Ruby Sharan

Ruby is currently in her third year of a Bachelor of Psychological Science at university. She aims to complete her honours and clinical masters with the goal to specialise in educational and developmental psychology.

Ruby has worked in Early Childhood Education and Care for over 3 years where she has developed a strong interest in supporting children with additional needs. She is passionate about working with children to build skills and reach their goals.

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Ruby recognises and appreciates the value in collaboration with families as well as a child’s wider support system and is passionate about working as a team to support the individual needs of each child.
bree

Behaviour Technician

Bree Cavanough

Bree completed her Bachelor of Psychology in 2023 at the University of Wollongong and is currently pursuing her Graduate Diploma of Psychology at the University of Technology Sydney with the intention of completing a Masters in Clinical Psychology.

Bree has a particular interest in youth mental health and has accumulated years of experience working with children. Her involvement as a Volunteer Youth Mentor highlights her commitment to empowering students and providing them with essential life tools to navigate challenges. Through comprehensive training, Bree has gained knowledge about the diverse needs and mental health concerns of young people in Australia.

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Bree has always been passionate about helping others and is driven to enhance this passion with her knowledge and experiences. Bree embodies the qualities of a compassionate and dedicated individual who is motivated to support others and assist them in achieving their goals – no matter how big or small.
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Behaviour Technician

Lana Graham

Lana is due to complete her Bachelor of Psychology (Honours) with the University of Wollongong at the end of 2024.

For years, Lana has had a broad interest in psychology and wellbeing, however her passion for children was ignited after becoming a mother herself in 2019. With a keen interest in child and developmental psychology Lana is excited to support the children she works with to learn a wide range of new skills that will provide them with greater opportunities in their life.

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Lana has a passion for providing a supportive environment to children to learn and grow
in and emphasises doing so in a positive and compassionate way. She brings a calm, nurturing approach to all interactions, and
strives to achieve shared goals with children and their families.

Read more about what services we can provide or get in touch to find out more.