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Valentyn Beresh
Junior Data Analyst
Phone: [open contact info](look above in the "contact info" section) Location: Lviv, Ukraine
Email: [open contact info](look above in the "contact info" section) LinkedIn: [open contact info](look above in the "contact info" section)

SUMMARY
Junior Data Analyst with hands-on experience in data cleaning, exploratory data analysis, and dashboard development.
Proficient in SQL, Python (Pandas, NumPy), Excel, Power BI, Tableau, and Looker Studio. Built cohort analysis tables,
interactive dashboards, and data visualizations to uncover trends and support data-driven decisions. Currently expanding
expertise in data analytics through continuous learning and hands-on projects. Seeking a Junior Data Analyst position to
apply analytical skills and contribute to business insights.

SKILLS PROJECT EXPERIENCE
HARD SKILLS COHORT ANALYSIS & USER RETENTION
SQL, Python, Advertising Companies
View Project ↗
Analysis, Gathering of the Requirements, Tools: SQL, Google Sheets
Theory of Probability and Mathematical Description: Performed cohort analysis based on a relational database to
Statistic, A/B Tests, Product Analysis, evaluate user retention across different acquisition channels, comparing
Business Metrics, Data Visualization, Data behavior of promo and organic users to assess acquisition quality.
Storytelling, Data Cleaning & Validation My tasks: Data extraction and cleaning via SQL (date parsing, event filtering,
table joins), cohort calculation and user tenure analysis, building interactive
TOOLS cohort tables in Google Sheets using pivot tables and conditional formatting
Result: Identified retention differences between promo and organic user
PostgreSQL, Google Analytics, Tableau, segmentsю Delivered insights on acquisition quality to support marketing
Looker Studio, Power BI, Pandas, NumPy, strategy
Matplotlib, Seaborn, Jupyter Notebook,
BigQuery, Google Sheets, Excel, MARKETING PERFORMANCE DASHBOARD
Amplitude View Project ↗
Tools: SQL, Tableau Public
SOFT SKILLS Description: Built an interactive marketing dashboard simulating a real-world
Collaboration, Customer focus, Active analyst task - explored, joined, and cleaned raw campaign data from
listening, Time management, Attention to multiple database tables, decoded URL parameters, handled NULL values,
detail, Adaptability, Desire to learn, Critical and prepared a unified dataset for analysis.
thinking, Analysis and decision My tasks: Data extraction, cleaning, and table joins in SQL, calculation of
making key marketing metrics (CPL, CTR, conversion rate) using FIXED LOD
expressions and correlation analysis, dashboard development with dynamic
LANGUAGES metric switcher and filter actions
Result: Delivered a business-ready dashboard with clear structure and
English - Upper-Intermediate,
correctly formatted metrics, built a portfolio-ready case demonstrating end-
Ukrainian - Native
to-end marketing analytics workflow

EDUCATION WORK EXPERIENCE
Data Analyst CUSTOMER SUPPORT IN NAMECHEAP INC
GoIT— start your career in IT 07/2022 - Present Lviv, Ukraine
03/2026 - 09/2026 Configured email services and domain settings, troubleshooting technical
Bachelor's Degree in Information, issues related to mail delivery.
Library and Archives Studies Handled customer inquiries via email, resolving complaints and disputed
issues according to internal company policies.
Kyiv National University of Culture and Arts
Reviewed and moderated requests for compliance with company guidelines,
2018 - 2022 ensuring accurate and professional communication.

DESIGN
2019 - 2022 Mukachevo, Ukraine
Freelance (2019-2020) - Designed social media posts for the Ministry of
Education and various startups.
Auto Parts Company (2020-2022) - Designed internal tools for daily
operations and developed/coded product category pages.
Tekhnokarpaty (2022) - Updated the BrandBook, created designs for
billboards, vehicle branding, and internal company resources.