An E&I (Electrical & Instrumentation) Engineer plans, designs, and oversees the installation, testing, and maintenance of electrical and instrumentation systems for projects, ensuring compliance with standards and safety regulations. Key responsibilities include creating technical documents like P&IDs and instrument lists, evaluating contractor offers, resolving technical issues, and coordinating with various project stakeholders. The role requires a strong understanding of industrial electrical and automation systems, proficiency in engineering software, and excellent problem-solving skills.