Dorota Jagnesakova
Data Scientist
London
Summary
Experienced Data Scientist with a strong background in data analysis, machine learning, and statistics. Currently driving innovation and data-driven decision-making at Prolific, developing and integrating advanced analytics models into the product ecosystem. Technical expertise spans Python, SQL, R, and data engineering tools like dbt. Proven track record in both start-up and corporate environments, with a proactive approach to solving complex problems and driving strategic growth.
Overview
7
7
years of professional experience
4
4
years of post-secondary education
Work History
Data Scientist
Prolific
07.2023 - Current
- Built and maintained machine learning models.
- Conducted unsupervised learning, econometric, and time series analyses to support strategic planning.
- Worked with Data Infrastructure to productionise models, ensuring smooth integration with existing systems.
- Provided in-depth analyses for revenue operations to understand business health.
- Identified, measured and recommended improvement strategies for KPIs across business areas.
- Evaluated new data sources for integration into existing models, expanding breadth of insights generated.
Central Data Analyst
Prolific
08.2022 - 07.2023
- Extracted and cleaned large datasets using dbt and SQL, enabling accurate data-driven decision-making.
- Conducted exploratory data analysis in Python to provide insights for different teams across the business.
- Applied statistical modeling techniques to address business challenges.
- Enabled more personalized customer experiences by analyzing behavior patterns and preferences.
Data Scientist
Hexis Live (Start-up)
09.2020 - 08.2022
- First employee of the company, developed a sports nutrition app aimed at delivering behavioural interventions.
- Implemented Python engines for key app functionalities, handled API integration, conducted testing.
- Enhanced data quality by performing thorough cleaning, validation, and transformation tasks.
- Analyzed complex data from the app, providing insights that guided business decisions and investor presentations.
Pricing Analyst Intern
Hotels.com
07.2018 - 08.2018
- Marketing contribution optimisation, looked for patterns in data to identify characteristics of properties driving negative profit.
- Performed statistical tests in R to analyse impact of new marketing strategies.
Credit Risk Intern
EY
06.2017 - 08.2017
- Worked with teams across CSE region, gathering and analysing data for developing corporate scoring models, utilising SQL and R.
Education
MSc Machine Learning
University College London
04.2019 - 05.2020
BSc Mathematics with Statistics -
King's College London
01.2016 - 05.2019
Skills
Data Analysis: Proficient in extracting, cleaning, and analyzing data using SQL, Python, and R Experienced in exploratory data analysis, statistical modeling, and predictive analytics
Machine Learning: Skilled in building, training, and deploying machine learning models
Data Engineering: Experience with ETL pipelines to use data from various sources Skilled in ensuring data integrity, optimizing performance, and automating workflows using dbt Experience with AWS and GCP
A/B Testing & Experimentation: Capable of conducting experiments to validate business hypotheses and inform product decisions
Communication: Able to translate complex data findings into actionable insights for diverse stakeholders
Collaboration: Experienced in working with cross-functional teams to achieve project goals, familiar with Agile frameworks
Languages
Slovak
Native language
English
Proficient
C2
Czech
Proficient
C2
Timeline
Data Scientist
Prolific
07.2023 - Current
Central Data Analyst
Prolific
08.2022 - 07.2023
Data Scientist
Hexis Live (Start-up)
09.2020 - 08.2022
MSc Machine Learning
University College London
04.2019 - 05.2020
Pricing Analyst Intern
Hotels.com
07.2018 - 08.2018
Credit Risk Intern
EY
06.2017 - 08.2017
BSc Mathematics with Statistics -
King's College London
01.2016 - 05.2019
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