Олена

OLENA RADIONOVA
DATA ANALYST

Argentina | U.S. Work Experience | Open to Remote Opportunities | [open contact info](look above in the "contact info" section) | LinkedIn | Tableau Portfolio

Data Analyst with 10+ years of experience in Sales Operations and Quality Assurance, including 2+ years in Data Analytics.
Experienced in customer behavior analysis, KPI monitoring, and business performance reporting. Proficient in SQL, Tableau, and Excel,
transforming multi-source data into actionable insights and dashboards. Skilled in identifying data discrepancies, analyzing customer
engagement and retention, and collaborating with technical teams to improve data accuracy and support data-driven decisions.

KEY SKILLS:
• Web & Customer Analytics: Customer Behavior Analysis, Customer Journey Analysis, Funnel Analysis, Conversion Metrics,
Retention & Churn Analysis, KPI Monitoring, User Engagement Metrics
• Data Analysis & Management: SQL, BigQuery, Python, Data Extraction, Data Quality, Data Modeling & Governance
• Statistical & Experimental Analysis: Statistical Analysis, Hypothesis Testing, Forecasting, Regression, Clustering, Time Series
Analysis, A/B Testing Principles (Hypothesis Design and Statistical Evaluation)
• Analytics & Reporting Tools: Tableau (Primary), Power BI, Looker Studio, Excel (Power Query, Pivot Tables), Google Sheets, GA4
• Cross-functional Collaboration: Requirements Gathering, Technical Issue Investigation, Collaboration with Product & Engineering
Teams, Data-driven Recommendations, Stakeholder Reporting

PROFESSIONAL EXPERIENCE
Hugspace, San Francisco | Data Analyst | Industry: Mental Health & Social Services January 2025 - Present
• Integrated and analyzed raw data from multiple sources, improving data integrity by 25% through data cleaning, validation, duplicate
detection, and anomaly investigation.
• Developed SQL queries to extract and join data across multiple tables, ensuring accuracy for KPI reporting and business analysis.
• Analyzed customer engagement, including repeat sessions, session duration, booking frequency, retention, and regional trends.
• Designed interactive Tableau dashboards to monitor operational KPIs and customer engagement metrics, reducing reporting
preparation time by 30%.
• Identified trends and performance gaps through comparative data analysis, providing actionable insights to support operational
improvements and data-driven decisions.
• Collaborated with engineers to investigate data discrepancies, resolve technical issues, and improve reporting workflows.
• Leveraged AI tools (Claude) to optimize and validate SQL queries, troubleshoot complex logic, and improve technical documentation,
increasing analytical efficiency.
Achievements: Optimized data processing workflows by 60% through the development of a reusable SQL library, significantly
reducing time-to-insight for investigations

Travel Company IT-TOUR, Ukraine | Sales Operations Analyst May 2012 - March 2022
• Analyzed industry trends and customer behavior, delivering accurate reporting that supported a 15-20% increase in annual sales.
• Produced analytical reports on booking and cancellation trends, enabling data-driven sales and operational decisions.
• Performed deep-dive analysis of bookings and customer profiles to identify preferences and optimize travel product selection.
• Managed complex data within booking systems, streamlining processing of tour packages and high data integrity across vendor
platforms.
• Streamlined vendor communication and booking workflows, reducing order processing time and manual errors by 15%.
Achievements: Increased client base by 30% through data-driven sales strategies. Proposed ideas for workflow automation that reduce
manual work and errors.

Travel Company IT-TOUR, Ukraine | QA Test Engineer August 2011 - May 2012
• Performed functional and regression testing of search and booking systems, reducing post-release bugs by 20%.
• Created and maintained test documentation (test cases, checklists) to ensure quality and regression-free releases.
• Analyzed and reproduced reported issues, providing technical feedback that accelerated bug resolution time by 15%.
Achievements: Contributed to the optimization of automated booking processes, reducing the number of partner-reported issues.
Helped increase both partner participation and customer satisfaction by ensuring consistent quality and reliability of system functionality.

EDUCATION
College of San Mateo, CA, USA | Business Analytics Certificate (Honors: Dean’s List) August 2024 - December 2025
Kharkiv University of Radio Electronics, Ukraine | Master's degree in Systems Engineering and Automation 2006 - 2011
Kharkiv University of Radio Electronics, Ukraine | Master's degree in Quantitative Economics 2009 - 2011

PROFESSIONAL DEVELOPMENT
• Microsoft | Power BI Data Analyst Professional Certificate In Progress
• CERGE-EI |Statistics and Data Analysis in Tableau December 2025 - January 2026
• Udemy | The Complete SQL Bootcamp, SaaS Metrics Fundamentals for Managers, Founders & Investors 2025 - 2026
• Data Camp | SQL (Intermediate, Manipulation), Tableau, Power BI, Google Sheets 2024 - 2025