An Instructional Designer develops effective educational programs by assessing learner needs and creating engaging instructional materials. Key responsibilities include curriculum design, e-learning development, and audience analysis. Essential skills include proficiency in learning theories, technology tools, and project management. Typically working in corporate or academic settings, they collaborate with subject matter experts, educators, and graphic designers. Career progression includes roles like Senior Designer or Learning Manager, with opportunities to specialize in e-learning or training strategies.