Костянтин

KOSTIANTYN GRECHANIUK
Entry-level Business / Data Analyst | Open to Trainee, Internship & Support Roles
Kraków, Poland | [открыть контакты](см. выше в блоке «контактная информация») | [открыть контакты](см. выше в блоке «контактная информация») | [открыть контакты](см. выше в блоке «контактная информация»)

SUMMARY

Entry-level Business / Data Analyst with practical training in business analysis and regular hands-on practice in SQL, Excel and
documentation tools. Interested in improving business processes and helping teams work in a more structured and efficient way. Open to
trainee, internship, support and junior analyst roles.

TECHNICAL SKILLS

Business Analysis: User Stories, Acceptance Criteria, Use Cases, Mind Maps, Backlog basics, Kanban, requirements analysis, basic process mapping.
SQL & Databases: PostgreSQL, SQLite, DBeaver, pgAdmin, SELECT, JOIN / LEFT JOIN, GROUP BY, HAVING, CASE, aggregations, subqueries, CTEs, basic
window functions.
Excel & Data: Pivot Tables, basic formulas, sorting, filtering, charts, table formatting, basic data cleaning. Tools: Jira,
Confluence, Draw.io, Lucidchart, Google Sheets, Power BI basics.

PROJECTS & TRAINING

Business Analysis in IT Course | Beetroot Academy | 2026
RECCY - marketplace app for buying and selling new and second-hand clothes
• Created business analysis documentation for RECCY, a marketplace app with attention to counterfeit-product prevention.
• Worked with requirements analysis, user stories, acceptance criteria, use cases, mind maps and backlog structure.
• Created diagrams and basic process flows to describe user interactions and application logic.
• Used Jira and Confluence for task organization, documentation and project workflow; presented the final project on LinkedIn.
SQL & Data Practice | Self-study / Stepik / Practical training
• Practiced SQL regularly using customer, product and order datasets in PostgreSQL and SQLite.
• Solved practical tasks involving filtering, joins, grouping, aggregations, CASE statements, subqueries, CTEs and basic window functions.
• Built simple analytical queries, such as product sales ranking, customer order summaries and order quantity segmentation.

EXPERIENCE

Administrative / Cultural Department Internship | Remote Internship | 3 months
Vinnytsia City Council / Department of Culture
• Supported routine administrative and documentation tasks for cultural and public-sector activities.
• Helped structure information, organize working materials and create simple visual diagrams for selected processes.
• Gained experience in documentation, communication and process-oriented thinking in a real organizational environment.

EDUCATION

Jagiellonian University (Uniwersytet Jagielloński) | 2023 - 2026
Bachelor's degree, Intercultural Relations (Relacje międzykulturowe)
Beetroot Academy | 2026 | Course Completion: Business Analysis in IT

LANGUAGES

Polish: C1 (Advanced / Fluent) | English: B1 (Intermediate - actively studying) | Ukrainian / Russian: Native