He has represented issuers, underwriters, placement agents, trustees, and investors in corporate finance transactions, covered bonds, collateralized loan obligations and asset-backed securities, including securitizations of auto loans and leases, dealer floor-plan financings, credit card receivables, student loans, trade receivables, mortgage loans, servicer advances, tobacco fee settlement awards, tobacco quota payments, life settlements and utility stranded costs. John has represented numerous clients on the development of innovative structures involving structured finance products. His work also includes advising clients in connection with tender and exchange offers in liability management transactions and restructurings and in connection with asset purchases and dispositions.

John has played a key role in the drafting of comment letters for industry groups regarding various proposed regulations affecting offerings of asset-backed securities.

John is widely recognized as a leading securitization lawyer, having been recognized in Chambers USA 2023. Most recently, one client says that " John is a very good all-around securitization lawyer." Another client has said "John Hwang is commended for ‘client service, his ability to explain complex issues in an understandable manner, and impressive technical expertise.'"