Work Experience
Data & AI Engineer
02.2024 - present
Nest Bank
- Delivered AI expert-assist solution reducing expert consultation time by 55% and lowering expert call escalations by 60%.
- Co-built banking chatbot for clients: intent detection and routing, RAG/knowledge search, guided in-app journeys (deep links to relevant app sections), personal-finance support (spendings with categories, savings goal calculations).
- Enabled assisted banking operations in the chatbot, including money transfers and bill payments from invoice photos.
- Designed and implemented an end-to-end chatbot evaluation framework: test sets, regression suite, automated scoring, and release gatekeeping.
- Defined and tracked quality metrics (answer accuracy, relevance, grounding), enabling data-driven prompt/knowledge-base improvements.
- Built Databricks data pipelines for migrations and transformations.
Senior Python Test Developer
2022 - 02.2024
SII
- Built a Python test automation framework from scratch using Pytest, enabling scalable, maintainable automated testing.
- Delivered comprehensive backend API test coverage for critical business flows and negative scenarios, publishing stakeholder-friendly automated test reports as CI/CD artifacts.
Previous Roles
Python Data Engineer
2022 - 2023
Lingaro
Python Test Developer
2021 - 2022
Solwit
Test and Implementation Specialist
2019 - 2021
Exorigo-Upos
Skills
Python
SQL
Pytest
Pandas
FastAPI
Databricks
Azure
Docker
CI/CD
GIT
REST API
RAG / LLM
ETL
Testing
Education
Master's in Data Science
Silesian University of Technology
2019 - 2023
Bachelor's in Biomedical Engineering
Silesian University of Technology
2015 - 2019
Certificates
AI-102
(2025)
AZ-900
(2024)
ISTQB FL
(2023)
GCP Cloud Digital Leader
(2021)
Languages
Polish
Native
English
C1
German
B1