Renardo completed his internship at Sterkfontein Psychiatric Hospital. He worked at the Male, Female and Forensic units. At all units emphasis was placed on providing psychological services to the in-patients with severe forms of psychopathology. Psychological services included individual and group therapy. While at the Female unit, Renardo was assigned to the Dual Diagnosis Unit (DDU). The DDU specialises in treatment for patients with both a substance use disorder and co-morbid diagnosis, focussing on rehabilitation. At the Forensic Unit, Renardo formed part of the observation team assessing pre-trial fitness and responsibility.

His year of Community Service was completed at the Department of Correctional Services: Kgosi Mampuru II Management Area, Central Corrections. The focus was on rendering psychological services to adult male offenders for the purpose of criminal rehabilitation. Part of the psychological services included risk assessment.

Since completion of his community service, Renardo has gained experience in a variety of contexts and interventions; with either sessional, part-time or full-time employment at: Akeso Clinic Arcadia, University of Pretoria Student Counselling Unit and Eersterust Community Health Clinic. As private practitioner he has also rendered in and out patient services at psychiatric facilities such as Akeso Clinic, Zwavelstream Clinic and Denmar Specialist Psychiatric Hospital.