Ready to build software that powers the future? NREL is looking for a creative and driven intern to join our Application Development team. This isn't your average internship; you'll be writing code that helps researchers, policymakers, and industry leaders solve some of the world's most pressing energy challenges. This role focuses on turning complex scientific models and data into robust, user-friendly software applications. You'll work alongside world-class scientists and software engineers to design, develop, and deploy tools that analyze and visualize the future of energy. If you have a passion for elegant code and an interest in making a real-world impact, we want to hear from you. Your work will contribute to the open source Sienna Tool which was developed by NREL NREL-Sienna · GitHub. The primary programming language for this project will be Julia, known for its high performance in scientific computing.