Data and AI Lead - Agentic Tax Processes and Platforms

Taxation; Madrid; On-site; EUR 150,000 - 190,000; Full time

Job summary

EY’s Global Tax Centre of Excellence is seeking a Data & AI Lead to design agentic tax workflows underpinned by AI‑ready data products. You will architect data marts, oversee ingestion from ERP/tax platforms, and ensure governance with client‑scale deployments.

The role blends tax domain understanding with data architecture, AI orchestration, and platform strategy. You will lead PoCs, pilots, and scaled deployments, shaping technical strategy and operating models while collaborating with

Qualifications

• Degree in computer science or related field with AI, ML, cloud or data engineering certifications advantageous.
• 15+ years of experience across data architecture, data engineering and analytics.
• Hands‑on experience with modern data platforms and AI tooling (Azure ML, Databricks, MLflow).
• Strong data modelling, governance and large‑scale data integration skills.
• Experience deploying AI/ML or advanced analytics in production environments.
• Proficient in programming languages such as Python, Java and C++ with ML libraries.

Responsibilities

• Design agentic tax workflows and AI‑driven data products for scalable client deployments.
• Lead data ingestion and transformation from ERP, tax platforms, semi‑structured documents, and external sources.
• Define reusable agent blueprints and governance, including security and risk monitoring.
• Architect solutions deployable in client environments and EY hosted platforms.
• Develop reference architectures, patterns and accelerators within the CoE.

Skills

Data architecture

Data engineering

Analytics

AI/ML in production

Programming (Python, Java, C++)

Data modelling

Data governance

Data integration

Communication skills

Education

Bachelor's degree in computer science engineering

Advanced certifications in AI / ML / cloud / data engineering

Tools

Azure ML

Databricks

MLflow

LangChain

LangGraph

PyTorch

PySpark

scikit-learn

Hugging Face Transformers

Job description

The opportunity

EY’s Global 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 Agent 365)
  • Design and embedded real time controls and risk monitoring

Platform Strategy

• Architect solutions deployable:
  • within client environments (e.g. ServiceNow with workflow‑orchestrated agents), and
  • within EY‑hosted platforms
• Ensure EY retains reusable IP through:
  • agent blueprints
  • data mart patterns
  • orchestration logic
  • delivery assets eg. design and build agents
  • security & governance blueprints

CoE & Asset Development

• Act as technical authority within the CoE
• Develop reference architectures, patterns, and accelerators
• Support PoCs, pilots, and scaled deployments

Required Experience & Background

• Bachelor's degree in computer science engineering or equivalent work experience. Advanced certifications in AI, machine learning, cloud computing or data engineering are highly advantageous.
• 15+ years’ experience across data architecture, data engineering, and analytics including building SQL database, database designing and data modelling.
• Hands‑on experience with modern data platforms and AI tooling such as Azure ML, Databricks, MLflow, LangChain, LangGraph.
• Strong grounding in:
  • data modelling
  • data governance and quality
  • large‑scale data integration
• Hands‑on experience applying AI/ML or advanced analytics in production environments
• Proficient in programming or scripting languages: for instance, C++, Java, Python and key ML libraries (e.g. PyTorch, PySpark, scikit‑learn, Hugging Face Transformers).
• Comfortable working with both business stakeholders and data & ai engineers
• Experience shaping technical strategy and operating models
• Strong verbal and written communication skills
• Excellent problem solving skills and unsatiable desire to learn and keep up with technology developments.

Desirable Experience

• Prior work in Tax Technology or Finance platforms
• Experience with agentic AI concepts, orchestration, or workflow‑driven automation
• Exposure to cloud‑based data platforms and modern AI stacks

Success Measures

• Quality and reusability of AI‑ready data marts
• Stability and scalability of agent deployments
• Speed from Lean design to working agent
• Reuse of assets across clients and service lines

What we offer you

At EY, we’ll develop you with future‑focused skills and equip you with world‑class experiences. We’ll empower you in a flexible environment, and fuel you and your extraordinary talents in a diverse and inclusive culture of globally connected teams. Learn more.

Are you ready to shape your future with confidence? Apply today.

To help create an equitable and inclusive experience during the recruitment process, please inform us as soon as possible about any disability‑related adjustments or accommodations you may need.