Contact information

You can get this candidate's contact information from https://www.work.ua/resumes/18386619/

Work experience

Career break

from 02.2025 to 05.2026 (1 year 4 months)
Working on a personal project

Continuous professional development via DataCamp, focusing on SQL, Python for Data Science (Pandas, NumPy), and BI tools (Tableau, Power BI). Completed multiple industry-recognized tracks to enhance data-driven decision-making skills.
https://www.datacamp.com/portfolio/martynovychserhii

Data analyst

from 05.2024 to 02.2025 (10 months)
SQUAD, Київ (IT)

Data Visualization: Developed and deployed 15+ interactive Tableau dashboards, providing stakeholders with
actionable insights through automated reporting on Tableau Server.
SQL Development: Maintained and updated complex SQL queries in Amazon Athena and Redshift environments
to align with evolving business requirements.
Process Automation: Leveraged Google Sheets and cloud tools to build automated reporting workflows,
achieving a 40% reduction in manual processing time.
Data Acquisition: Automated the extraction of dashboard metadata using Python (Requests) and Tableau Public
API, converting JSON responses into structured datasets for internal auditing.

DATA QUALITY OPERATOR

from 02.2020 to 05.2025 (5 years 4 months)
SQUAD, Київ (IT)

Data Validation & QA: Performed rigorous validation of annotated datasets to ensure high accuracy, consistency,
and alignment with project specifications.
Data Integrity & Standardization: Verified large-scale dataset quality by identifying anomalies and refining
classification rules, ensuring high-fidelity training sets for ML models and improving processing efficiency.

DATA OPERATOR

from 06.2018 to 02.2020 (1 year 9 months)
SQUAD, Київ (IT)

Data Labeling & Classification: Identified and categorized objects and events in video datasets to provide high-
quality structured data for machine learning models.
Data Quality Control: Performed systematic verification of labeled content according to strict classification rules
to ensure data accuracy and consistency.

Education

National Aviation University

GEODESY CARTOGRAPHY AND LAND MANAGEMENT, Київ
Higher, from 2011 to 2012 (1 year)

The College of Information Technologies and Land Management of the National Aviation University

Київ
Secondary, from 2006 to 2011 (5 years)

Additional education and certificates

Data Analyst in Python

2025, 36hrs
Certificate

Data Analyst in Power BI

2025, 50hrs
Certificate

Associate Data Analyst in SQL

2025, 39hrs
Certificate

Data Analyst in Tableau

2025, 42hrs
Certificate

Associate Data Engineer in SQL

2025, 30hrs
Certificate

Associate Data Scientist in Python

2025, 90hrs
Certificate

Data Scientist in Python

2025, 26hrs
Certificate

Associate Python Developer

2025, 32hrs
Certificate

Data Engineer in Python

2025, 40 hours
Certificate

Knowledge and skills

• SQL
• Python
• AWS
• Tableau
• Power BI
• BigQuery
• Excel
• Google Analytics 4
• Power Query
• Google Sheets
• Git
• Jupyter Notebook
• PyCharm
• Jira
• Confluence
• A/B Testing
• Machine learning
• EDA
• Window Functions
• Pandas
• NumPy
• Matplotlib
• Seaborn
• Python Requests

Language proficiencies

English — above average