Hire the Best Tableau Developers in California

Detail-oriented and innovative professional with expertise in furnishing data-driven insights, analytics, and business intelligence used to advance opportunity identification and corporate growth. Skilled in designing, building, and maintaining high quality automated reporting, dashboards, and evaluations for enabling quick decision making. Ability to scrutinize complex sets of data for resolving data defects, improving processes, and presenting reports. Adept at translating business outcomes into measurable metrics and providing highly creative solutions to wide audience base, while reporting for C-level executives and general users. Articulate communicator with well-developed aptitude to cultivate and foster strong relationships with colleagues, staff members, and executive management to stay abreast of industry/business trends.

Your Data, Transformed Into Dashboards That Drive Better Decisions Dashboards built with Looker Studio, Tableau and Power BI turn complex data into clear, actionable visuals—helping teams track performance, identify trends, and make confident decisions every day. What Can Be Delivered SQL-Driven Analytics: Reliable data models paired with clean visuals and intuitive filtering Looker Studio Reports: Google Ads, Analytics, and Sheets unified into a single, clear view Tableau Visualizations: Data storytelling focused on key performance indicators and outcomes Data Preparation: Cleaning, structuring, and organizing datasets for accurate reporting Automated Reporting: Seamless refreshes using blended and connected data sources Tools & Skills BI Tools: Looker Studio | Tableau | Power BI Data Sources: PostgreSQL | MySQL | BigQuery | Google Sheets | Excel Expertise: SQL | Data Visualization | Dashboard Design | Reporting Automation Why It Works Every dashboard is designed with clarity and decision-making as the priority—fast to load, easy to navigate, and built to deliver long-term value. Projects are executed with precision and attention to detail, ensuring each visualization communicates the right insight at the right time. Let’s Build Something That Informs and Inspires Dashboards built with Looker Studio, Tableau and Power BI that transform raw data into meaningful insights—ready to support real business results.

I am available for new projects and students! Please get in touch by sending me a message or a contract proposal. I am one of the top Tableau developers and data tutors here on Upwork. However, I'm not only a technical professional. I help with optimizing advertising strategies, communicating with end clients, offering recommendations, and making formal presentations. Please send an invitation or message and I will always respond by the end of the business day, but more likely within one hour. I have worked with clients in: Digital Advertising, ECommerce, Wealth Management, Aerospace Manufacturing and Software Development. In addition to Tableau, I have expertise working with: SQL, Google Ads, Google Analytics, PowerQuery, BigQuery, Tableau Data Prep, Epicor, Salesforce, Fishbowl, and several other data tools. I am formally educated from UC Davis with a BS in Managerial Economics, and data science coursework with UCLA Extension. I am reliable, responsive, and have a flexible schedule. I look forward to working with you!

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. From there, I design and develop a tailored solution—whether it’s a dashboard, report, data pipeline, or machine learning model. I work collaboratively, incorporating your feedback and adapting to changes along the way. My focus is always on delivering clear, actionable, and reliable results that support smarter, data-driven decision-making 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 schedule a call to discuss your project objectives and how I can help you unlock insights, automate reporting, and build visually appealing, actionable dashboards.

I specialize in building dashboards, internal tools, and web applications using SQL, Power BI, Tableau, React, Next.js, Node.js, MySQL, and cloud platforms. I’ve led enterprise CRM/ERP implementations, developed in-house BI platforms, and automated reporting workflows to improve accuracy, transparency, and performance. On the development side, I’ve built production-ready applications including AI-powered chatbots, workflow automation tools, reporting platforms, and data-driven web apps with API integrations, authentication, and responsive UI/UX. I’m experienced in React, JavaScript, TypeScript, REST APIs, OpenAI integrations, and cloud deployment. I’m passionate about solving complex business problems, aligning technology with strategy, and delivering measurable results. If you’re looking for a reliable partner to improve operations, build custom software, or unlock the value of your data, let’s connect. Key Skills: Business Intelligence | Process Automation | Full-Stack Development | SQL | Power BI | Tableau | React | Node.js | API Integration | AI Automation | Cloud Solutions

I’m a detail-oriented Data Analyst with a strong background in accounting and data visualization. I have experience working with Excel, Google Sheets, SQL, and Python for data cleaning, reporting, and analysis. My goal is to turn raw data into clear, actionable insights that help businesses make better decisions. I’ve completed several projects involving gaming analysis, data dashboards, and process optimization. Whether it’s building an automated report, analyzing trends, or visualizing key metrics, I always aim for accuracy and clarity. Let’s work together to bring clarity and meaning to your data.