Andrew has been registered as a Psychologist with AHPRA since 2015, a Solicitor at the Supreme Court of NSW since 2017, and at the High Court of Australia since 2018. In 2024, he became a Psychology Board-Approved Supervisor. He is one of the few professionals in Australia who are dually qualified and registered as a Psychologist and Solicitor. He is also one of the few psychologists with dual endorsements as a Clinical Psychologist and Forensic Psychologist.

Previously, Andrew practiced criminal law and civil litigation, appearing as an advocate and instructing solicitor in the Local, District, and Supreme Courts of NSW. Since 2011, he has worked clinically with children and adults with complex mental health and neurodevelopmental needs. He completed his Clinical Psychology Registrar training in a paediatrics mental health clinic, the Forensic Hospital, and a forensic psychology clinic. He later held leadership roles as Clinical Lead at a large clinical psychology clinic and Head of Forensic Services at a forensic practice, supervising and managing teams of psychologists.

Since 2019, Andrew has specialised in forensic psychological assessments for various courts and tribunals, includng Local, District, Supreme, and the Federal Circuit and Family Courts, NCAT, and AAT. He served as Senior Clinical Psychologist at the Elver Program, which is a partnership between DCJ and NSW Health, where he provided statewide tertiary-level mental health services for high-risk out-of-home care (OOHC) children with complex needs. At Elver, he also operated a Foetal Alcohol Spectrum Disorder (FASD) clinic and led care teams to advocate for systemic changes.

In research and the university system, Andrew has investigated inmate and juvenile detainee health at Justice Health & Forensic Mental Health Network and managed clinical trials on psychotropic medication at NICM Health Research Institute. Since 2024, he has been lecturing on mental health law, risk assessments, court report writing, and forensic psychology at Western Sydney University (WSU) for the Master of Clinical Psychology and Master of Professional Psychology programs. In 2025, he was awarded the Sessional Academic Teaching Excellence Award from the School of Psychology, WSU.

In 2022, Andrew founded AWP, where he routinely produces court reports for criminal, immigration, child protection, family, and insurance matters across Australia and internationally. Andrew has completed forensic psychological assessments involving mental health issues, neurocognitive functioning, risk of re-offending, and parenting capacity and needs. He also regularly conducts neuropsychological and forensic risk assessments for OOHC children, especially those with a high CAT score.

Andrew is fluent in Cantonese and Mandarin.