The opportunity
EY’s Integral Tax Centre of Excellence Data & AI team play a prominent role in leading client transformation initiatives that leverage Data & AI as core capabilities. The CoE seeks to architect reusable patterns and process blueprints to bootstrap scalability across all the EY Tax technology teams in all key markets.
You will have an existing opportunity to stay on the leading edge of technology development and to contribute to the successful transformation of EY tax and its clients.
Role Purpose
The Data & AI Lead role is responsible for designing and architecting agentic tax workflows, underpinned by AI‑ready data products and robust data engineering.
This role sits at the intersection of:
Tax domain understanding
Data architecture and engineering
Applied AI and agent orchestration
It ensures that agents are fed with trusted, timely, well‑structured data and are deployed in a way that scales across clients and platforms.
Key Responsibilities but not limited to:
Agentic Workflow & AI Design
Design agentic workflows for tax processes, including:
task‑level agent responsibilities
agent‑to‑agent communication patterns
human‑in‑the‑Loop and escalation models
feedback loops and agent performance monitoring and evaluations
Define reusable agent blueprints aligned to Lean‑derived task definitions
Apply leading edge agentic driven design and build methodologies eg. use of Codex, Factory ai, GitHub Copilot
Data Architecture & AI‑Ready Data Products
Design and oversee the build of AI‑ready data marts that:
expose tax data at the right grain
maintain lineage and quality controls
support deterministic and probabilistic reasoning
Lead data ingestion and transformation from:
ERP systems
tax platforms
semi‑structured documents
external data sources
Agent Governance & Security
Apply design led thinking to embed agent and workflow governance and security:
Ensure compatibility and integration with client’s governance models and technology (eg. Microsoft Age
📌 Data and AI Lead (Madrid)
🏢 Taxation
📍 Madrid
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