Passionate Data Analyst with a proven track record in the software and finance industries. I've contributed to the success of a startup by adding over 2000 users annually.Proficient in Python, R, SQL, EXCEL and Tableau.I've demonstrated my skills through various achievements:• Optimized marketing strategies, resulting in an average revenue growth of 8% for clients.• Developed machine learning models (logistic regression, Ada-boost, random forest) to predict user traffic, achieving a 50% growth in the first month by leveraging hyper-parameter tuning and improving baseline accuracy by 10%.• Utilized Tableau to create 30+ interactive reports and dashboards, streamlining decision-making and reducing manual reporting time by 3 hours weekly.• Conducted 5 product presentation sessions for audiences of 700+, receiving positive feedback for captivating a diverse audience.Beyond my analytical expertise, I am a dedicated guitar enthusiast, exploring Classical, Jazz, Rock and Funk music. I am eager to share insights into various guitar techniques, gear, and music theory to enhance the guitar playing experience.I am excited about opportunities that allow me to leverage big data to uncover impactful insights and meaningful patterns. Let's connect! Feel free to reach out to me at LiJ241@cardiff.ac.uk or connect with me here on LinkedIn!