A Microsoft Expression developer utilizes Microsoft Expression, a suite of design and development tools, to create web and Windows applications. They design compelling user interfaces, graphics, and media using Expression Studio. They develop rich, interactive web applications using Expression Web, and prototype with Expression Blend. They also use Expression Encoder for video encoding, and Expression Design for vector graphics creation. Their role includes ensuring cross-browser compatibility, debugging, and testing. Their work contributes to creating engaging digital experiences, often collaborating with other developers, designers, and stakeholders. They require strong problem-solving abilities, creativity, and proficiency in web standards and technologies.