Opportunity

EY’s Integral Tax Centre of Excellence Data & AI team plays 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 Six Sigma Black Belt is a foundational role within the Tax Process Reinvention & Agentic AI CoE. The role is responsible for deep task-level decomposition of tax processes and data flows, identification and quantification of waste, and the design of Lean‑optimised To‑Be processes that are explicitly engineered to support agentic AI workflows. This role ensures that AI is applied to the right work, in the right way, at the right time — and is not layered on top of broken or inefficient processes.

Key Responsibilities

- Process Decomposition & Lean Analysis: Lead Lean Six Sigma DMAIC reviews across Tax service lines (CIT, PAS, Indirect Tax,

📌 Six Sigma Black Belt - Tax Process Reinvention (Madrid)
🏢 Ey
📍 Madrid