Some of the investigations Johandri has been involved in include:

• Preliminary investigation into allegations of the irregular awarding of a Personal Protective Equipment (“PPE”) tender for a Provincial Department.
• Investigation into various allegations of fraud, corruption, and exchange control violations by a large group of international companies, where multiple jurisdictions are involved.
• Investigation into various allegations of fraud and corruption, relating to a large state-owned company’s employees and suppliers.
• Forensic investigation into possible procurement irregularities, fraudulent, corrupt, and other irregular conduct in relation to the implementation of a food bank programme by a non-profit organisation at a Provincial Department.
• Investigation into charges against partners at a big audit firm for non-compliance with the firm’s policies and procedures and non-disclosure of financial interest in a financial institution (a client of the company).
• Investigation into alleged misconduct by a supply chain manager officer at a media company.
• Investigation into and reconciliation of R25 billion (over 215,000 transactions) for a large financial institution.
• Quantification of penalties payable by a large rental company as a result of non-performance in terms of key performance indicators as stipulated as per the contract with the customer.