As an experienced Python developer, with a strong background in both Machine Learning Engineering and Computer Technology, I believe I have the unique perspective and skill set to tackle your Sankey chart issue. Over my 15-year career, I have built numerous applications in Python using various libraries like Plotly, specifically for tasks such as numerical or statistical data analysis, optimization, and GUI building. I assure you that my understanding of the language extends deep into its intricacies.
Moreover, my proficiency extends to the realm of machine learning - a field that has given me the ability to approach problems from various angles and find solutions that are both technically sound and efficient. In line with this project, I have extensive experience working on different plots and their rendering using libraries such as Seaborn, and Matplotlib.
I look forward to discussing the project further with you and applying my skills to bring about a solution that truly satisfies your needs. Thank you for considering my proposal!