Karina has extensive expertise in neurodevelopmental conditions such as intellectual impairment, autism spectrum disorders (ASD), attention deficit hyperactivity disorders (ADHD), specific learning disorders (including dyslexia, dyscalculia), and emotional dysregulations. Her primary focus lies in conducting thorough psycho-educational assessments aimed at diagnostic formulation, needs assessment, school placement recommendations, and progress monitoring during interventions.

Throughout her career, she has amassed a comprehensive toolkit of established psychological and educational assessment tools endorsed by MOE, schools, forensic, and medical settings. She provides specialised counselling, consultation, and training to parents, caregivers, teachers, and educational professionals, with particular emphasis on high-functioning ASD and students with executive functioning (EF) challenges.

She is actively involved as a sought-after speaker, lecturer, tutor, clinical supervisor, advisor, and consultant in both public and private sectors. She frequently deliver talks, workshops, and training sessions to educational professionals, parents, and aspiring specialists in educational psychology and SEN roles. Her collaborations with schools and teachers aim to optimise learning and developmental outcomes for students under her care. Additionally, she served as an adjunct lecturer and associate at prestigious universities in Singapore, including NTU NIE, NUS, and SUSS, where she imparted her knowledge and expertise to future generations of professionals.