Senior Data Scientist - Banking Personalization & Scoring

Meniga; Warszawa; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Health and Benefits: Private health

Hybrid working

Growth opportunities

Performance-based bonus

Job summary

Meniga is hiring a Senior Data Scientist to work on the enrichment engine that turns raw banking data into clean merchant, category and location signals. The role focuses on behavioural features, scores and segments powering personalisation, CRM and AI agents for millions of customers.

You will work in Python, advanced SQL and dbt, with an event warehouse (ClickHouse or equivalent) and Airflow pipelines, handling real-world banking data and QA/synthetic datasets.

Qualifications

• 5+ years as a data scientist in banking, lending, cards, wealth or fintech
• Hands-on work with transactional data, not just clickstream
• Ability to build explainable models and document methods

Responsibilities

• Advance Transaction and Merchant Enrichment: improve classification and merchant-matching models and define quality metrics
• Design Behavioral Features: turn banking event streams into meaningful signals for models and rules
• Build Scores Banks Can Defend: productionise scores with definitions, validation and drift checks
• Define the Statistical Building Blocks: specify how signals behave, remain calibrated and explainable

Skills

Data science

Python

SQL

Tools

dbt

Airflow

ClickHouse

Job description

Meniga is hiring a Senior Data Scientist to work on the enrichment engine that turns raw banking data into clean merchant, category and location signals. The role focuses on behavioural features, scores and segments powering personalisation, CRM and AI agents for millions of customers.

You will work in Python, advanced SQL and dbt, with an event warehouse (ClickHouse or equivalent) and Airflow pipelines, handling real-world banking data and QA/synthetic datasets.