I routinely develop new computational tools to better understand biology, which involves a great amount of quantitative data analysis and visualization. For more information, please check my GitHub page.
Also, a long time ago, during the period of 2006-2010, I was the main developer of ByoDyn, a computational tool to analyze mathematical models of biochemical interest, using a portfolio of diverse numerical methods.
While Python is my first choice programming language, yet I have carried out several scientific projects using other languages like R, MATLAB and... Fortran!