Data Analyst - Data Visualization & Tableau Specialist

ALEX DUNU

Lagos, Nigeria +*** 816-***-**** ********@*****.***

LinkedIn: linkedin.com/in/alexdunu Portfolio: github.com/alexdunu PROFESSIONAL SUMMARY

Results-driven Data Analyst with over 5 years of experience transforming raw data into actionable insights that improve business performance, operational efficiency, and decision-making. Skilled in data cleaning, visualization, reporting, statistical analysis, and dashboard development using Excel, SQL, Power BI, Tableau, and Python. Experienced in cross-functional collaboration and freelance consulting projects. CORE SKILLS

• Data Cleaning & Transformation

• Exploratory Data Analysis (EDA)

• Data Visualization & Dashboard Development

• SQL (MySQL, PostgreSQL)

• Power BI & Tableau

• Python (Pandas, NumPy, Matplotlib)

• KPI Reporting & Forecasting

• Communication & Stakeholder Management

PROFESSIONAL EXPERIENCE

Senior Data Analyst — La Dizo Foods (2023 – Present)

• Built interactive Power BI dashboards for sales and operations.

• Automated monthly reporting processes, reducing reporting time by 40%.

• Conducted customer behavior analysis and forecasting. Data Analyst — Prime Logistics Solutions (2020 – 2022)

• Analyzed logistics and operational datasets using SQL and Excel.

• Created performance dashboards and operational reports.

• Improved data reliability through validation and QA checks. Junior Data Analyst — BlueWave Business Services (2018 – 2020)

• Prepared reports and dashboards using Excel and Tableau.

• Supported customer analysis and sales reporting projects.

• Assisted with data cleaning and reporting automation. FREELANCE EXPERIENCE

Freelance Data Analyst (2019 – Present)

• Developed dashboards and reports for startups and small businesses.

• Conducted sales analysis, survey analysis, and customer segmentation.

• Built automated Excel reporting templates and visualizations.

• Delivered actionable business insights to remote clients. EDUCATION

Bachelor of Engineering (B.Eng) — Federal University Otuoke, Bayelsa State, Nigeria CERTIFICATIONS

• Google Data Analytics Professional Certificate

• ALX Virtual Assistance Fundamentals Certification

• Axia Africa Data Analysis Training Certification

• Microsoft Excel for Data Analysis Certification

• Power BI Data Analytics Certification

PROJECTS

Sales Performance Dashboard

Designed an interactive Power BI dashboard to track revenue and customer trends. Customer Retention Analysis

Conducted customer trend analysis to improve engagement strategies. Inventory & Operations Analysis

Analyzed inventory movement and operational efficiency trends. REFERENCES

Available upon request.

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