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Mariusz Mikolajewski

Mariusz Mikolajewski

Data Analyst

Benefit Systems S.A.

Technologies

My Portfolio Highlights

My New Course

Introduction to Python

My New Course

Introduction to Python

Data sensei, guiding others on the path of analytical enlightenment.

My Work

Take a look at my latest work.

course

Introduction to SQL

course

Intermediate SQL

course

Introduction to Python

course

Introduction to SQL

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

Courses

Introduction to Python
Introduction to SQL
Introduction to Power BI
Intermediate SQL

My Work Experience

Where I've interned and worked during my career.

KROSS S.A. | Jan 2022 - Present

Business Analyst/ Data scientist

- Preparing PVM calculation with additional impacts as TKW or exchange rate - Bulding sale forecast model using PROPHET in day interval by each group - Creating optimization models, sales and production (pulp, gurobi) - Solving the problem of product allocation and the effectiveness of creating customer baskets - Cooperation with many areas of business - Solving business problems through DEA data and building specific solutions
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innogy Polska | Jan 2020 - Jan 2021

Data Specialist

• Analysis of implemented products and assessment of reporting correctness; • Analyzing data obtained from clients online accounts; • Preparation of a predictive model for customers regarding new products; • Coordination and undertaking activities related to aggregation (e.g. moving average, time intervals) and analyzing business data (business assessment); • Analytical monitoring of process efficiency, indicating risks and deviations from the norm; • Creating and maintaining a report containing process performance controls in the organization; • Communication with business owners of monitored processes.

Legia Warszawa S.A. | Nov 2016 - Jan 2020

Manager for others sports in club

• Managing a team to work on projects with key club partners; • Supervision and ongoing business analysis of partners • Managing projects between the club and partners; • Determining and enforcing the department's annual budget; • Supervision and current analysis of the situation in sport sections related to the club; • Coordination of sports club activities with sport sections.

MM Mariusz Mikołajewski | Jan 2015 - Jan 2019

Owner

• Supporting professional players in sports careers; • Search for sponsors and investors for players; • Creating projects where competitors would be product faces and their implementation on the market; • Building a coherent image of the athlete in the media.

Legia Warszawa Swim Club | Jan 2013 - Jan 2019

Member of the Board

• Preparation of the company's operating strategy; • Development of new branches of the company's activity; • Project management and settlement (also subsidized by the city council or sponsors); • Accounting and management of management accounting • Preparation of a cash flow plan • Analysis (SWOT, BCG, McKisney, Value Chain Model, stakeholder analysis).

TreeSwimming | Jan 2012 - Jan 2013

Manager

• Contact with B2C customer (sales, relationship building, complaints) • Work as a manager with 12 employees • KPI control

My Education

Take a look at my formal education

Podyplomowe, Akademia Analityka z SAS, R & PythonSGH Warsaw School of Economics | 2020
Master’s Degree, Strategic managementKozminski University | 2014
Bachelor’s Degree, ManagementKozminski University | 2012
Akademia Leona Koźmińskiego (Kozminski University)

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