Senior Data Scientist Greece

Senior Data Scientist, Greece

Role type: Full time | Location: Greece (fully remote) | Preferred start date: ASAP

ABOUT SATALIA

Satalia builds enterprise-grade AI systems for WPP and its FTSE 100 client base. Led by WPP Chief AI Officer Daniel Hulme, we run as a decentralised organisation where engineers and scientists own their domains end to end. Our data scientists are also at the core of WPP Research, conducting frontier research and developing prototypes that evolve into tools used in production across WPP.

THE ROLE

Our current work includes:

Agentic systems. Developing long-horizon agents that plan, use tools, and collaborate. We also build the core infrastructure to ensure reliability and governance at scale, spanning context/memory, observability, traffic control, and continuous verification.

Federated and privacy-preserving learning. Training shared models when the data cannot move: federated LLM fine-tuning across independent data owners, and aggregation strategies that hold up under heterogeneous datasets.

Identity intelligence. Predictive and probabilistic modelling on large behavioural datasets: propensity and similarity models, and probabilistic record linkage across data sources.

Geospatial intelligence. Spatial statistics, geospatial feature engineering, and forecasting and optimisation over location data, plus computer vision on imagery.

Synthetic data. Generating realistic synthetic data with known ground truth to stress-test models and agents under controlled adversarial conditions.

You will be the technical lead across these workstreams: scoping the problem, choosing the modelling approach, building the training and evaluation infrastructure, and shipping to production by collaborating with engineers and domain experts across Satalia and WPP.

WHAT YOU'LL DO

• Turn business problems into well-scoped data science projects.
• Develop models, agents, and the evaluation harnesses that keep them safe and reliable.
• Lead projects end to end: plan the work, design the solution, and work with your team to deliver.
• Explain complex technical work clearly to engineers, domain experts, and senior stakeholders.
• Mentor data scientists and raise the quality bar across the team.

MUST HAVE

• 5+ years building ML/AI models and taking them to production.
• Deep expertise in modelling techniques for both structured and unstructured data.
• Hands-on experience building LLM-powered systems.
• Strong software engineering habits: Python, version control, testing, code review, CI/CD.
• Proven record of leading technical projects and mentoring other data scientists.
• Clear communication with both technical and non-technical stakeholders.

NICE TO HAVE

• Experience with temporal and geospatial data.
• Experience building and testing agents in production.
• Experience with federated learning, clean rooms, or other privacy-preserving methods.
• Background in marketing technology, ad tech, audience modelling, or media mix modelling.
• Publications at top venues or meaningful open-source contributions.

WHAT WE OFFER

• Healthcare benefits
• Remote working
• Flexible working hours
• Impactful projects
• Continuous learning and development

Satalia is home to some of the brightest minds in AI. If you're looking for a company that values autonomy and freedom and embraces a culture of inclusion and warmth, we'd love to hear from you.

We aim to respond to all applications within 2 weeks. If you have not heard from us within 2 weeks this means your application has been unsuccessful.

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Good luck!