Lean Six Sigma Black Belt – Process Transformation Manager

EY; Dublin; On-site; EUR 120,000 - 160,000; Full time

Benefits offered by this job

Hybrid Working

Pension

Maternity & Paternity leave

Discounted health insurance

Bike to work Scheme

Web Doctor - Free unlimited online GP

Recognition Awards

Additional annual leave

Cash incentives for referrals

Wellness rooms

Job summary

EY is seeking a Senior Manager for Business Consulting – Lean Six Sigma Black Belt to lead process improvements in Dublin. You will decompose processes, map value streams, and quantify improvements across regulated environments, shaping AI-enabled transformations.

This role emphasizes collaboration with technologists, data engineers, and senior stakeholders. You will deliver multiple Lean Six Sigma projects, coach client teams, and drive capability development within EY’s CoE.

Qualifications

• Certified Lean Six Sigma Black Belt.
• Experience delivering multiple Lean Six Sigma Black Belt projects.
• Proven delivery of Lean transformations in complex, regulated environments.
• Strong experience decomposing knowledge-heavy processes.
• Comfortable working alongside technologists, data engineers, and AI specialists.
• Experience presenting quantified improvement cases to senior stakeholders.
• Strong interpersonal, workshop facilitation skills.

Responsibilities

• Lead Lean Six Sigma DMAIC reviews across key client projects.
• Decompose end-to-end processes to task level, defining inputs, outputs, decision points, hand-offs and exceptions.
• Produce Value Stream Maps (As-Is and To-Be) with metrics (cycle time, lead time, takt time, capacity).
• Identify and quantify waste to support business cases and AI transformation roadmaps.
• Apply statistical tools (regression, ANOVA, DOE) and SPC to validate improvements.
• Design AI-ready processes and ensure standardisation and scalability across jurisdictions.

Skills

Lean Six Sigma Black Belt

Project delivery

Stakeholder engagement

Process mapping

Data analysis

Client facilitation

Presentation to seniors

Tools

Minitab

Excel

Job description

EY is seeking a Senior Manager for Business Consulting – Lean Six Sigma Black Belt to lead process improvements in Dublin. You will decompose processes, map value streams, and quantify improvements across regulated environments, shaping AI-enabled transformations.

This role emphasizes collaboration with technologists, data engineers, and senior stakeholders. You will deliver multiple Lean Six Sigma projects, coach client teams, and drive capability development within EY’s CoE.