When hiring a data visualization freelancer, consider their proficiency in relevant tools (e.g., Tableau, Power BI), understanding of data storytelling, portfolio quality, and industry experience. Ensure strong communication skills and ability to meet deadlines for effective collaboration and project success. When looking to hire a freelancer for data visualization on Paperub, consider key factors to ensure a successful project. First, assess their expertise in relevant tools like Tableau, Power BI, or D3.js, and their experience working with your type of data, whether it's financial, healthcare, or another field. Reviewing portfolios is essential to check their ability to transform complex data into clear, insightful visuals. Communication skills are equally important, as they must understand your data needs and translate them effectively.