Марія

Mariia Biesiedina
Data Analyst

Contact
Berlin, Germany
E-mail: [open contact info](look above in the "contact info" section)

Professional Profile
Junior Data Analyst with practical experience gained through personal
and educational projects. Skilled in data cleaning, analysis,
visualization, and reporting using Python, SQL, Excel, Power BI, and
Tableau. Familiar with Pandas, NumPy, and Seaborn for data
processing and exploratory data analysis. Able to create dashboards,
analyze datasets, and present insights through clear reports and visualizations.

Work experience

Data Analyst | Training projects (Key focus areas: product analytics,
marketing analytics, and KPI reporting) Berlin, Germany 2024 – 2025
●​ Performed end to end data analysis projects from data cleaning to visualisation and
reporting
●​ Extracted and analyzed datasets using SQL (JOINs, aggregations, and window functions.
●​ Extracted and analyzed datasets using SQL (JOINs,
●​ aggregations, and window functions.
●​ Conducted exploratory data analysis (EDA) using Python (Pandas, NumPy, Seaborn).
●​ Identified trends, patterns, and actionable insights to support data-driven
decision-making.
●​ Created structured analytical reports and presentations for stakeholders.

Project Links
●​ Data Analysis project

●​ SQL, Python Project

●​ Tableau Project
Online Store Administrator Bulgaria 03.2022 – 09.2022
●​ Managed daily operations of an online food store in a small business environment
●​ Handled customer communication, order processing, and logistics coordination
●​ Improved workflow organization and internal communication processes
●​ Gained practical experience in business operations and customer behavior analysis

Personal Assistant Kharkiv, Ukraine 2017 – 2022
●​ Managed schedules, coordination tasks, and administrative workflows
●​ Handled confidential information with high responsibility
●​ Supported operational efficiency in fast-paced environments
●​ Developed strong organizational and multitasking skills

Beauty Salon Administrator Kharkyv, Ukraine 2008 – 2014
●​ Managed daily operations, appointments, and client communication
●​ Coordinated supplies and administrative processeы
●​ Ensured smooth workflow and customer satisfaction.

Education
12.2024 – 10.2025 IT Career Hub — Berlin, Germany
Data Analytics Course including Product Analytics. Covered fundamentals of data analysis,
product analytics, user behavior, and data-driven decision making.

09.2019 – 07.2024 Kharkiv Biotechnology University — Kharkiv, Ukraine
Bachelor’s degree in fields of study Management and administration

Skill & Competencies
Analytical thinking with the ability to interpret data, recognize patterns, and present findings
in a clear and structured way. Organized and adaptable with strong multitasking and
communication skills. Able to manage tasks efficiently, work independently as well as in
team environments, and quickly learn new tools.

Core professional values include trust, reliability, openness to new experiences, and a
responsible approach to handling data and communication.

Languages
●​ Ukrainian – Native
●​ Russian – Native
●​ German – A2 (actively improving)
●​ English – Conversational (currently improving).
 Technical Skills
Data Analysis:

●​ SQL (JOINs, CTEs, Window Functions, Aggregations)
●​ Python (Pandas, NumPy, Matplotlib, Seaborn)
●​ Excel / Google Sheets (Pivot Tables, Advanced Formulas).

BI & Visualization:

●​ Power BI (Dashboards, KPIs, Reports)
●​ Tableau (Interactive Visualizations).

Analytics:

●​ KPI Tracking & Reporting
●​ Funnel & User Behavior Analysis
●​ A/B Testing (Basic understanding).