As an interviewer at Manta Network, I would evaluate candidates based on their technical proficiency in JavaScript, TypeScript, React, and Node.js, along with their experience in developing browser plugins and Dapps. Key focus areas include problem-solving skills for complex coding challenges, attention to detail in implementation, and the ability to collaborate effectively with designers and backend developers. Candidates should demonstrate familiarity with blockchain concepts and security best practices to ensure they can handle the nuances of wallet development in a fast-paced, innovative setting.