Data Analyst with Excel, SQL, Python Expertise
Resume:
Wollelaw Aragaw
Houston Texas • +1-832-***-**** • ********.******@*****.***
SUMMARY
Detail-oriented and analytical Data Analyst with experience in interpreting and analyzing complex data sets. Proven ability to leverage data analytics tools and methodologies to drive business improvements and support data-driven decision-making. Seeking expertise in data analysis and visualization. TECHNICAL SKILLS
Data Analysis Tools: SQL, Python, Excel, Tableau
Statistical Techniques: Regression analysis, hypothesis testing, data mining Database Management: MS SQL, MySQL
Data Visualization: Tableau, Looker studio
Other Skills: Data cleaning, data wrangling
EXPERIENCE
Correlation one • Remote
Data Analytics Training Program January 2025 - July 2025
● Completed a rigorous 24-week Data Analytics Training Program at Correlation One, engaging in practical business case studies to develop problem-solving skills; addressed technical issues using data analytics, enhancing problem-solving capabilities pertinent to real-world business contexts.
● Enhanced data accuracy and operational efficiency by 30% through the application of Excel's conditional formatting and formulas to reduce data duplication, demonstrating keen attention to detail and proficiency in data organization.
● Drove a 15% revenue increase by identifying key sales performance variables using statistical analysis in Excel; developed targeted marketing strategies based on insightful data analysis, showcasing strong analytical and logical thinking abilities.
● Optimized advertising budgets and boosted customer acquisition rates by 20% through linear regression analysis in Excel, uncovering significant correlations between ad spending and customer growth, exemplified aptitude in data analysis for strategic business decision support.
● Improved decision-making processes by meticulously cleaning a customer database, eliminating null values using Excel and SQL queries; reinforced data integrity for reliable reporting and analysis, demonstrating proficiency in data cleaning and SQL.
● Streamlined data processing workflows with Python's Pandas and NumPy libraries, reducing data preparation time by 40%; enabled expedited insights generation, reflecting the ability to quickly learn and apply new tools and technologies.
● Addressed data integrity by detecting and correcting outliers using Z-scores in Excel, contributing to more dependable statistical analyses and business decisions; showcased problem-solving skills and a detail-oriented approach to ensure high-quality data. Amazon • United States
Warehouse Associate April 2022 - Present
● Identified and reported inventory discrepancies, contributing to a more streamlined packing and sorting process by improving the identification of frequently mislabeled or misplaced items.
● Demonstrated strong analytical skills by regularly analyzing warehouse data to recognize patterns, thereby aiding in the implementation of corrective measures that increased overall inventory accuracy.
● Achieved top 10% performance in sortation efficiency by meticulously reviewing and accurately processing inventory data on input screens, surpassing the average hourly rate and demonstrating exceptional attention to detail that contributed to a significant reduction in operational errors.
● Proactively identified and reported inventory discrepancies, resulting in the refinement of the packing and sorting process, and contributed to the establishment of protocols that mitigated the incidence of mislabeled or misplaced items, enhancing overall warehouse operational flow. Page 2 of 2
Carnival Corporation Costa Group • Italy, Genoa
Electro Technical officer May 2019 - October 2019
● Leveraged advanced proficiency in Microsoft Excel to develop and deliver comprehensive reports, contributing to the analysis and interpretation of large data sets to identify actionable insights and drive strategic initiatives.
● Acted as a collaborative liaison between technical and non-technical teams, diligently collecting and interpreting data requirements to deliver bespoke analytics solutions that supported cross-functional business objectives in a high-pressure environment.
● Engineered and executed an Excel-based data monitoring system to track and analyze liquid levels, oil levels, and machinery temperatures in the engine room, enabling the adoption of proactive preventive maintenance strategies that enhanced machinery reliability.
● Developed intuitive Excel charts and pivot tables to visualize critical engine data, resulting in accelerated decision-making processes and supporting timely preventive maintenance actions, thereby minimizing operational disruptions.
● Pioneered the use of Excel for sensor protection analysis, which contributed to the optimization of maintenance schedules and improved engine performance, ensuring equipment longevity and consistent operational excellence.
Fleet Management Ltd, • India
Junior Electro Technical officer May 2017 - December 2019
● Innovated data management processes by designing and implementing automated Excel reports and Access database solutions, slashing data retrieval times and boosting productivity.
● Articulated complex data-driven findings to diverse stakeholders through clear and compelling presentations, thereby fostering a data-centric culture and enhancing cross-departmental understanding of key insights.
● Modernized inventory management by meticulously updating Excel spreadsheets and executing weekly full backups, resulting in a 95% accuracy rate in inventory data and ensuring 100% on-time maintenance for critical electrical and emergency equipment.
● Enhanced data integrity for decision-making processes by rigorously cleaning and organizing database information, significantly contributing to the reduction of data errors and enabling more reliable and accurate data analysis.
● Streamlined maintenance operations by developing and implementing a proactive scheduling plan for machinery, which secured uninterrupted functionality of essential equipment and fostered an environment of preventive maintenance.
● Leveraged advanced proficiency in Microsoft Excel to create automated reports and Access database solutions, dramatically slashing data retrieval times and bolstering team productivity, while effectively communicating complex data insights to diverse stakeholders. EDUCATION
Abro vision • Houston
Certificate 2023 - 2024
Ethiopian Maritime Training Institute • Bahir Dar, Ethiopia Postgraduate Electro-Technical Officer 2016 - 2017 Wollo University • Ethiopia
Bachelor of Science in Electrical and Computer Engineering 2010 - 2015
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