Principal Data Scientist: Agentic Personalization & Gen AI

VistaPrint; Barcelona; Remote; EUR 120,000 - 180,000; Full time

Job summary

VistaPrint is seeking a Principal Data Scientist to drive the generative, intent-based evolution of our platform, bridging traditional data science with LLM-based agentic reasoning. You will co-lead the research agenda with another Principal Data Scientist and influence cross-functional teams.

You will architect MCP servers and ML pathways to expose models as modular tools for AI agents, translating real-time signals into structured intents for the fmX pipeline and advancing propensity-based

Qualifications

• Advanced degree (Ph.D. or Master's) in Computer Science, Applied Mathematics, Statistics, or a closely related quantitative field.
• 8+ years of experience building and deploying machine learning models and deep learning systems into high-scale customer experiences.
• Hands-on experience with Agentic AI, AI Agent Orchestration frameworks (e.g., LangGraph, Strands), and building reasoning layers.
• Experience building Model Context Protocol (MCP) servers to bridge data/ML with LLM orchestrators in production.
• Deep expertise in Deep Learning, LLMs, and Reinforcement Learning for real-time ranking.
• Proven track record of building propensity models and customer segmentation on large-scale data.
• Expert-level proficiency in Python, PyTorch/TensorFlow, and SQL.
• Strong understanding of ML interactions with backend pipelines (Databricks, Snowflake) and frontend delivery systems.
• Excellent communication and stakeholder management to translate concepts into business value.

Responsibilities

• Bridge Data Science practices and agentic experiences by translating embeddings and fmX outputs into robust reasoning abstractions for agentic workflows.
• Lead evolution of recommendations into Generative AI; design and build the agentic reasoning layer around fmX models and rankers.
• Architect ML pathways and MCP servers to expose core models as modular tools for AI agents in real time.
• Develop an intent layer translating real-time signals into structured customer intents for the fmX pipeline.
• Build advanced propensity models and dynamic personas for segmentation and targeting.
• Influence product, engineering, and leadership to adopt a model-driven, agent-first approach while preserving performance.

Skills

Python

PyTorch/TensorFlow

SQL

LLMs

RL

Propensity Models

Customer Segmentation

Communication

Education

PhD or Masters in CS/Math/Statistics

Tools

Databricks

Snowflake

Streaming Features

Job description

VistaPrint is seeking a Principal Data Scientist to drive the generative, intent-based evolution of our platform, bridging traditional data science with LLM-based agentic reasoning. You will co-lead the research agenda with another Principal Data Scientist and influence cross-functional teams.

You will architect MCP servers and ML pathways to expose models as modular tools for AI agents, translating real-time signals into structured intents for the fmX pipeline and advancing propensity-based