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Kofi O. Status: Offline
San Jose, CA
100% Job Success
Top Rated

Data Analyst & Tableau Developer | Expert in BI, Tableau, SQL, Python

Want to work with a Top-Rated Tableau & Data Analytics Expert? I build modern, visually compelling, and interactive dashboards, helping businesses unlock the power of their data to drive smarter decision-making. With 8+ years of experience in data analytics and data visualization, I focus on delivering clean, insightful, and interactive dashboards that help businesses grow. I’m well-versed across industries—whether it’s marketing data, sales reports, SEO dashboards, predictive modeling, or complex SQL and ETL workflows, I can build the best solution for you. What I do Best: ✅Business Intelligence & Data Visualization – Tableau, Tableau Prep, Power BI, Looker Studio, Zendesk Explore ✅Data Analysis – Python, SQL ✅Machine Learning & AI – Predictive modeling, forecasting, fuzzy matching algorithms, large language models (LLMs), retrieval-augmented generation (RAG) ✅ETL & Data Pipelines – Optimizing SQL queries, automating workflows ✅Excel Automation / VBA Macros ✅Cloud Data Solutions – Azure, AWS, Snowflake, BigQuery ⚡How I Work I start by understanding your goals, data sources, and key metrics. I then build an initial dashboard prototype, incorporating your feedback to refine it into a final, fully interactive solution. My focus is always on delivering clear, insightful, and visually compelling dashboards that make data-driven decision-making easy. Why Choose Me? ⭐ Proven Track Record – Top-rated on Upwork with 900+ hours worked, perfect 5-star feedback, and 100% job success. 💬 Excellent Communication & Transparency – I’m always clear, responsive, and provide frequent updates on project progress. 📊 Data-Driven Approach – I help you make informed decisions with precise, actionable insights. ⏳ Fast & Reliable – I respect deadlines and deliver high-quality results on time. I ensure that all key milestones are met without delays. 🏆 Industry Expertise – I’ve built dashboards for businesses in marketing, finance, e-commerce, and healthcare, helping them track KPIs, automate reporting, and extract real-time insights. What Clients Say About My Work: ✔"Kofi did a great job on ETL and ML tasks using Amazon Web Services (AWS). We'd be happy to work with him again." ✔"Kofi was great at communicating and meeting deadlines. He quickly adapted to a new data connector and delivered our dashboard efficiently. I appreciated his thoughtfulness and recommendations for improving our dashboard visualizations." ✔"Kofi was great to work with and very knowledgeable about Tableau. I will definitely work with him again if I can." ✔"It was an excellent experience working with Kofi. He consistently produces high-quality visualizations and delivers on time. He is committed, responsive to feedback, and flexible when project requirements change. I look forward to working with him on future projects!" 📅Need Help on Your Next Project? Let’s Chat! Let’s schedule a call to discuss your project objectives and how I can help you unlock insights, automate reporting, and build visually appealing, actionable dashboards.
Work history
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Skills

Skills

  • SQL
  • Tableau
  • Database
  • Macros
  • Azure Machine Learning

Testimonials

Endorsements from past clients

"As the Sales Planning Support Manager, I worked together with Kofi in software sales. He created budgets for our professional sales teams and analyzed the large data sets created by our SaaS software. Kofi's advanced ability to gather and analyze large data sets is equal to his continual pursuit of expanding his skill set. His work facilitated the closing of numerous net new customers and the renewal of large multi-year contracts. Do not hesitate to hire Kofi for your projects, he will go above and beyond to achieve your project goals within your requested time frame!"

Ijaz H. | Sales Planning and Support Manager
Sep 2020

Verified

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