Ірина

IRYNA MARTYNENKO
DATA ANALYST

CONTACTS PROFILE SUMMARY
Junior Data Analyst with hands-on experience in data analysis, SQL queries, and
[відкрити контакти](див. вище в блоці «контактна інформація»)
data visualization using Tableau, Python and Google Sheets. Worked on e-
[відкрити контакти](див. вище в блоці «контактна інформація»)
commerce projects, developing conversion funnel analysis based on 1M+ rows of
LinkedIn
GA4 data and creating dashboards for tracking sales and business metrics.
GitHub
Confident in the full cycle: data cleansing, exploratory analysis, and visual
Telegram presentation of results. Open to new challenges and committed to continuous
Lisbon, Portugal growth in data analytics.

HARD SKILLS PROJECT EXPERIENCE
Ecommerce Conversion Funnel Analysis (GitHub)
Data analysis & processing
Tools: SQL (BigQuery), Tableau, Google Cloud Platform
Data cleaning, EDA,
Description: Built an end-to-end analytics solution to track the customer journey
Descriptive statistics,
from session start to purchase using raw GA4 data.
Data aggregation and filtering,
Tasks: Performed data cleaning and restructuring of 1M+ rows in BigQuery
Dashboard development, data
(unnesting, CTEs). Conducted exploratory data analysis to identify bottlenecks
visualization, results interpretation
across a 7-stage conversion funnel. Developed interactive Tableau dashboard with
A/B testing basics, funnel analysis
dynamic filters by traffic source, device, and landing page.
Results: Performed bottlenecks identification within the checkout process, providing
TOOLS actionable insights to optimize conversion efficiency. Enabled data-driven
comparison of traffic source performance.
SQL (PostgreSQL),
Sales Analysis Dashboard (GitHub)
BigQuery,
Tools: Google Sheets, SQL (BigQuery), Dashboards
Python (Pandas, NumPy,
Description: Designed and built a dashboard in Google Sheets to analyze e-
Matplotlib),
commerce sales, revenue, and conversion metrics.
Power BI,
Tasks: Performed data cleaning and structuring of transactional data. Wrote SQL
Tableau,
queries to calculate key business metrics. Conducted exploratory data analysis to
Google Sheets, Excel
surface trends in sales and conversion over time.
Jupyter Notebook,
Results: Consolidated key e-commerce metrics into a single dashboard. Simplified
Amplitude,
analysis of sales and conversion changes over time.
GitHub,
DV360,
CRM systems, WORK EXPERIENCE
Slack
Genpact
Content Analyst
SOFT SKILLS May 2025 - September 2025
Strong analytical mindset, Analyzed content datasets to identify patterns and quality issues. Documented
Attention to details, findings and reported on data accuracy to internal stakeholders.
Work well independently Ensured data accuracy using validation rules and quality metrics. Performed manual
data correctionns when required.

Cognizant
Acting as Quality Analyst
LANGUAGES June 2024 - May 2025
Conducted data and decision accuracy audits and provided actionable feedback to
English: upper-intermediate improve processes.
Ukrainian: native Trained and mentored auditors, increasing team accuracy and efficiency by 10%.
Investigated escalated cases, identified root causes, and implemented solutions,
Russian: native
reducing errors by 20%. Tracked issues through resolution in collaboration with cros-
Portuguese: intermediate
functional teams.
 Cognizant
EDUCATION Content Analyst
2025 - 2026 October 2022 - June 2024
IT school GoIT Reviewed and analyzed digital content, ensuring accuracy and
Data Analyst compliance with guidelines.
Identified trends and patterns, providing actionable insights.
2007 - 2009
Handled user inquiries efficiently and empathetically, following
Kharkiv National University of Aerospace
policies and procedures.
“KhAI”
Master’s Degree in Project Management
Teleperformance
2001 - 2007 Technical Support Specialist
Kharkiv National University of Radio November 2020 - September 2022
Electronics
Maintained CSAT 98% through exceptional customer support.
Specialist Degree equivalent to
Resolved complex technical issues via cross-team collaboration.
Master’s in Economic Cybernetics
Onboarded and trained new team members, improving team efficiency.
Bachelor’s Degree in Economics