Артем

CURRICULUM VITAE
Name: Artem Demchenko
Contacts: Telegram - @dbrufns
Contact e-mail: [открыть контакты](см. выше в блоке «контактная информация»)
Contact LinkedIn:
[открыть контакты](см. выше в блоке «контактная информация»)
GitHub:https://github.com/Tunnp0

Professional skills
SQL (Advanced) PostgreSQL, MySQL, SQL Server

BI & Visualization: Power BI, Tableau, Google Sheets

Data Analysis: Cohort Analysis, Retention, LTV,
Segmentation

Data Processing: ETL, Data Modeling

Programming: Python (pandas, matplotlib)

Cloud: GCP BigQuery (familiar)

Tools: Git, Jira

Education
State University of Telecommunications, Kyiv, Ukraine.
Faculty of Informatics and Computer Science, c. Kyiv, Computer Engineering.
Bachelor of Engineering, from 2021 till 2025.
Work experience
Triple Whale:
BI Data Analyst
Sep 2024 – Jun 2025

As a member of the data analytics team, I play a critical role in transforming
raw data into actionable insights that drive business decisions. My work focuses on
streamlining data operations, optimizing workflows, and enabling cross-functional
teams with powerful analytics.
Key Responsibilities:
Data Infrastructure & Workflow Optimization:
● Manage and enhance a ticketing system in Jira to improve workflow
tracking and efficiency.
● Design and maintain robust SQL queries and stored procedures for data
extraction, transformation, and analysis.
Analytics & Insights:
● Build and deploy interactive dashboards, reports, and visualizations to
support internal decision-making.
● Maintain a centralized metrics repository, ensuring data consistency across
teams and stakeholders.
● Provide strategic insights by analyzing large datasets to identify trends,
patterns, and business opportunities.
● Collaboration & Problem-Solving
● Work closely with Sales, Customer Success, and Operations teams to
translate customer business needs into technical solutions.
● Troubleshoot and resolve database issues to ensure minimal downtime and
data accuracy.
● Partner with AI/ML teams to refine AI models, improving the quality and
impact of data-driven outputs.
● Technical Documentation & Knowledge Sharing
● Create and maintain comprehensive technical documentation for streamlined
future development and onboarding.
● Mentor and collaborate with team members to foster a culture of continuous
learning and process improvement.



Cobit-Solutions:
Data Analyst
Aug 2023 – Jun 2024
● Extracted, transformed, and analyzed data using Microsoft SQL Server
● Built and supported Power BI dashboards for business monitoring
● Designed data models using Tabular Editor, DAX Studio, ALM Toolkit
● Provided support and analytics solutions for client-facing requirements


Confidential Project:
Middle Data Analyst
Sep 2025 - Feb 2026
● Designed and executed complex SQL queries for analyzing large-scale
transactional and user behavior datasets
● Performed cohort, retention, and behavioral analysis, identifying key drivers
of user engagement and monetization
● Developed and maintained analytical datasets for tracking financial activity,
including deposits, conversion funnels, and anomalies
● Conducted data quality validation and consistency checks, ensuring reliability
of reporting outputs
● Built internal reports and dashboards to monitor KPIs and support operational
decision-making
● Identified patterns in failed transactions and user activity, contributing to
fraud detection and system optimization
● Collaborated with cross-functional teams to translate business questions into
structured data analysis tasks
● Optimized SQL queries and data workflows, improving performance and
reducing processing time

Additional education
ITStep:
- Complete Back-end Python course, Issued June, 2023:
Cisco:
- IT Essentials 7.01, Issued May, 2022: ArtemDemchenko-IT Essentials
70-certificate.pdf
- IoT, Issued December, 2022:ArtemDemchenko-Introduction to -certificate.pdf

Language knowledge
• Ukrainian – expert, native;
• English – upper intermediate, verbal and written;
• Czech - elementary

Additional information
I am a responsible person, I can work both in a team, and on my own. I can
defend my point of view, as well as make a compromise. Ready to grow fast, learn
and get new skills and abilities.