Marketing Data Scientist

SIX Group Services Ltd.; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Flexible Work Models

Personal Development

Agile Working Methods

Job summary

SIX Group Services Ltd. in Warsaw is seeking a Marketing Data Scientist to own the full modelling stack in production, within a long-cycle B2B setting with strong regulatory expectations and explainability.

You will build and operate marketing mix models and account-level attribution, run experiments, develop personalization and AI models, and ensure refresh, calibration, and documentation meet finance-grade standards. The role offers up to 40% remote work.

Qualifications

• Experience with marketing mix modelling and attribution modelling in production.
• Strong Python, PySpark and ML lifecycle tooling.

Responsibilities

• Build and operate marketing mix models (Bayesian / econometric) quantifying channel and brand contribution across business units.
• Build and operate account-level multi-touch attribution models designed for long B2B cycles, buying committees and in-flight opportunities
• Design and run incrementality and geo-lift experiments; calibrate and challenge models
• Develop personalization, propensity and applied-AI models feeding segmentation and targeting
• Own model refresh, monitoring, calibration, documentation and explainability to finance-grade standards
• Work hands-on in the ML environment (MLflow, model serving, AI endpoints); collaborate with partner's squad and handover
• Translate model outputs into scenario planning and budget optimisation with the Measurement & Insights Lead

Skills

Bayesian methods

Econometrics

Causal inference

Time-series modelling

Marketing mix modelling

Attribution modelling

Python

PySpark

ML lifecycle tooling

Databricks

Tools

Databricks

MLflow

Python

Job description

Select how often (in days) to receive an alert: Create Alert

SIX drives the transformation of financial markets.

What sets us apart drives us ahead: between local roots and global relevance, we are a unique blend of tradition and future, of foundation and growth. We value bright minds and inspire them to grow with their ideas. Come and shape the future of finance with us.

Marketing Data Scientist

Warsaw | Up to 40% working from home possible | Reference 8339

SIX is building a dedicated Tech & Data capability within the Marketing & Communications (CMC) department, with the ambition to measure and steer marketing investment end-to-end: marketing mix modelling, multi-touch attribution and ROMI, operated in-house on the enterprise Databricks platform. Reporting to the Head Tech & Data Marketing & Communications, the Marketing Data Scientist owns the models themselves. The capability is built together with an implementation partner — this role is embedded in the modelling workstream from the first sprint and takes over the run: refresh, calibration, evolution. From day one it also shapes the methodological route, choosing where transparent contribution rules suffice and where advanced modelling earns its complexity. This is an opportunity for an applied data scientist who wants ownership of a full modelling stack in production, in a B2B environment with long sales cycles, buying committees, and a regulated context that takes explainability seriously.

What You Will Do

• Build and operate marketing mix models (Bayesian / econometric) quantifying channel and brand contribution across business units
• Build and operate account-level multi-touch attribution (MTA) models designed for long B2B cycles, buying committees and in-flight opportunities
• Design and run incrementality and geo-lift experiments; use them to calibrate and challenge the models
• Develop personalization, propensity and further applied-AI models feeding segmentation, targeting and next-best-action use cases
• Own model refresh, monitoring, calibration, documentation and explainability to finance-grade and regulatory standards
• Work hands-on in the ML environment (MLflow, model serving, AI endpoints); embed with the implementation partner's model squad and own the handover
• Translate model outputs into scenario planning and budget optimisation together with the CMC Measurement & Insights Lead

What You Bring

• A strong applied data-science background: Bayesian methods or econometrics, causal inference, time-series modelling
• Hands-on experience with marketing mix modelling and/or attribution modelling in production; B2B context a plus
• Solid engineering craft: Python, PySpark and ML lifecycle tooling on Databricks or a comparable platform
• Experience designing experiments: control groups, geo tests, incrementality measurement
• The discipline to document and explain models to non-technical stakeholders in a regulated environment
• The judgement to keep it simple where simple wins — transparent rules first, complexity where it demonstrably adds value
• Experience embedding AI agents into business processes — designing, building and evaluating agentic workflows (e.g. on Databricks AI gateway and endpoints) beyond classic modelling

If you have any questions, check out our FAQ page or call Agnieszka Leputa at [phone]

Diversity is important to us. Therefore, we are looking to receiving applications regardless of any personal background.

What We Offer

• Flexible Work Models
  We trust our employees and offer a work environment that is well-balanced, productive and fosters success.
• Personal Development
  You will benefit from a culture of continuous learning and feedback. Your personal growth is supported through an extensive learning offering.
• Agile Working Methods
  Whether through scrum or design thinking,
  we solve exciting tasks together in teams.