Senior Data Scientist — Real-Time ML & Fraud (Remote)

IDT; Warszawa; Híbrido; PLN 180.000 - 240.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Remote/hybrid work options

Competitive salary

Career growth opportunities

Company English classes

Referral program

Mentorship

Descripción de la vacante

IDT Corporation is expanding its AI Lab and seeks a Senior Data Scientist to build new ML models from scratch and deploy them into real-time production. You will tackle fraud prevention, payment risk, transaction scoring, personalization, and forecasting using large-scale transaction data.

You will own the full modeling lifecycle, from problem framing to monitoring, and mentor teammates while exploring GenAI, graph methods, and state-of-the-art techniques.

Formación

• 5+ years of hands-on DS/ML building models from scratch.
• Fluent English with high technical communication (B2+).
• Strong statistics, probability, and validation methods.
• Experience handling class imbalance and anomaly detection.
• Experience deploying models to production.

Responsabilidades

• Design and build models from ground up for fraud, risk, and personalization.
• Partner with Data Eng and MLOps to productionize models.
• Design A/B tests and measure business impact.
• Lead and mentor teammates; explore GenAI and graph methods.

Conocimientos

Hands-on ML model development

Experimentation & A/B testing

English communication

Statistics foundations

Problem framing

Educación

Bachelor’s degree in CS/Math/Engineering

Herramientas

Python (scikit-learn, pandas, numpy)

PyTorch or TensorFlow

SQL

MLflow

ClearML

Snowflake

Descripción del empleo

IDT Corporation is expanding its AI Lab and seeks a Senior Data Scientist to build new ML models from scratch and deploy them into real-time production. You will tackle fraud prevention, payment risk, transaction scoring, personalization, and forecasting using large-scale transaction data.

You will own the full modeling lifecycle, from problem framing to monitoring, and mentor teammates while exploring GenAI, graph methods, and state-of-the-art techniques.