Greetings!
Sure, can assist you in upgrading and developing your project in React.js and implement D3.js as per your requirements,
Relevant Skills and Experience
Excellent ability in React.js development.
Skilled in HTML5, CSS3, JavaScript, React.js, D3.js and back-end.
Well versed with UI/UX, interactive graphics and charts, responsive/adaptive designs.
Proposed Milestones
$155 USD - Tentative cost
Can you please share the link of your web -app ?