A social media marketer is responsible for creating and implementing a company's social media strategy in order to increase brand awareness, improve customer engagement, and drive website traffic and sales. This may include creating and scheduling daily posts, managing and growing the company's social media accounts, running paid advertising campaigns, and analyzing and reporting on social media metrics. Additionally, a social media marketer may also be responsible for engaging with customers and building a community around the brand. Strong skills in social media platforms, content creation, and data analysis are important for success in this role.