I have worked with d3 for some time, creating many charts, so I'm familiar with data flow and have in fact implemented tooltips in some charts using a d3 - bootstrap integration. I'm new to freelance but I'm looking forward to taking opportunities to work on the technologies I like, like d3 ,SVG, and others.
Hope I can be a good candidate for you. Any thoughts, feel free to ask.
Regards,
Marcio