Tremmaine has been practicing as an attorney since 2007 in the areas of corporate and commercial law, real estate law, tourism and resort development, and banking and finance. She advises clients on all aspects of corporate and commercial law, business structure and investments, draft contracts and various legal documents. She acts for clients in high value land transactions and have been involved in tourism development projects from the idea phase to construction to completion, obtaining requisite operational licenses to completion, sales and ongoing daily management legal advice. She has been engaged as counsel to various commercial banks throughout her practice in drafting securitization documents, leading foreclosure and recovery proceedings and providing legal advice. She believes in providing clients with superior service and have earned a reputation for efficiency which manifests in repeat and new clients. Tremmaine has served in various leadership capacities including Chair of the 2012 Electoral Boundaries Commission, Deputy Chairman of the Invest TC Agency (2015-2018), Commissioner of the Turks and Caicos Islands Integrity Commission (2019-present), current Chair of the Turks and Caicos Islands Medical and Dentistry Professions Council and current member of the Turks and Caicos Bar Council.