UKI Business Consulting - Lean Six Sigma Black Belt - Manager

EY; Dublin; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid Working

Career Development

Pension

Free gym membership

Discounted health insurance

Job summary

EY in Dublin is seeking a UKI Business Consulting - Lean Six Sigma Black Belt Manager to lead Customer Transformation initiatives. You will decompose end-to-end processes, map value streams, and apply the 8 wastes framework to identify bottlenecks and opportunities, with a focus on AI-enabled process design.

You will work with statisticians and data engineers to analyze large datasets, run DOE/SPC analyses, build business cases, and coach client and EY teams on Lean-led AI enablement.

Qualifications

• Proven delivery of Lean transformations in complex, regulated environments.
• Strong experience decomposing knowledge-heavy processes.
• Experience presenting quantified improvement cases to senior stakeholders.
• Comfortable working alongside technologists, data engineers, and AI specialists.

Responsibilities

• Lead end-to-end Lean analysis and value stream mapping.
• Apply AI-enabled process design and governance for scalable solutions.
• Develop phased transformation roadmaps and compelling business cases.
• Coach EY teams on Lean-led AI enablement.

Skills

Lean transformations

Regulated environments

Stakeholder engagement

Process decomposition

Data analysis

Workshop facilitation

Tools

Minitab

Advanced Excel

Job description

UKI Business Consulting - Lean Six Sigma Black Belt - Manager

Location: Dublin

Other locations: Primary Location Only

Date: 14 Oct 2026

Requisition ID: 1744742

At EY, we’re all in to shape your future with confidence.

We’ll help you succeed in a globally connected powerhouse of diverse teams and take your career wherever you want it to go.

Join EY and help to build a better working world.

Business Consulting – Lean Six Sigma Black Belt – Manager

General Information

Location: Dublin

Available for Work Visa Sponsorship: NO

Business Area: Business Consulting - Customer Transformation

Contract Type: Full-Time – Permanent

The Team and the opportunity

Join our Customer Transformation team and help clients radically improve processes across operations to drive value for internal and external customers. You’ll work on exciting projects that transform customer experience, drive sustainable growth, and enhance business outcomes. This is your chance to shape how organisations optimise operations and have a tangible impact on performance.

Your key responsibilities

Process Decomposition & Lean Analysis

• Decompose end‑to‑end processes to task level, explicitly defining:
• Inputs and outputs
• Decision points
• Exception paths
• Produce Value Stream Maps (As‑Is and To‑Be) with quantified metrics (cycle time, lead time, takt time, capacity utilisation).
• Apply the 8 Wastes framework systematically to identify:
• Bottlenecks and delays
• Duplication and rework
• Quantify improvement opportunities to support:
• Business cases
• Prioritisation of AI agent candidates
• Phased transformation roadmaps

Statistical Analysis

• Expert use of statistical tools and hypothesis testing to identify root causes, validate improvements, and predict performance outcomes using:
• Regression analysis
• ANOVA
• Correlation analysis
• Design of Experiments (DOE)
• Statistical Process Control (SPC) & Process Capability:
• Experience applying control charts.
• Process capability analysis (Cp/Cpk).
• Variation analysis to monitor process stability and drive defect reduction.
• Proficient in analysing large datasets and presenting insights using histograms.
• Scatter plots
• Control charts
• Statistical software such as Minitab, or advanced Excel.
• Ability to design and execute experiments.
• Determine sample sizes.
• Use data to optimize process performance and operational outcomes.

AI‑Ready Process Design

• Bring knowledge around Data & AI to:
• Identify tasks suitable for agent execution.
• Standardised
• Auditable
• Scalable across jurisdictions and clients.

CoE & Capability Development

• Develop reusable Lean artefacts and patterns for repeat client delivery.
• Coach client and EY teams on Lean‑led AI enablement.

Skills and attributes for success

To qualify for the role, you must have

• Proven delivery of Lean transformations in complex, regulated environments.

Ideally, you will also have

• 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.

What we look for

• We’re looking for results driven, innovative, agile thinkers who are passionate about organisation transformation.
• You’ll thrive in a collaborative environment and be driven to make a meaningful impact through inclusive leadership and creative problem-solving.

What working at EY offers

We offer a competitive remuneration package. Our comprehensive benefits package includes support for flexible working and career development, and with FlexEY you can select benefits that suit your needs: covering holidays, health and well-being, insurance, savings and a wide range of discounts, offers and promotions.Plus, we offer:

• Support and coaching from some of the most engaging colleagues around.
• Opportunities to develop new skills and progress your career.
• The freedom and flexibility to handle your role in a waythat’sright for you.

All our employees are given a benefits package which they can tailor to suit their individual preferences. Our range of benefits include:

• Pension
• Discounted health insurance
• Web Doctor – Free unlimited online GP consultations for you and your family
• The purchase of additional annual leave
• Hybrid Working
• Free Gym membership
• Travel Pass
• Maternity & Paternity leave
• Bike to work Scheme
• Recognition Awards
• Cash incentives for referrals
• Tech MBA paid by EY
• Wellness rooms available in some offices

EY is committed to being an inclusive employer and we are happy to consider flexible working arrangements. We strive to achieve the right balance for our people, enabling us to deliver excellent client service whilst allowing you to build your career without sacrificing your personal priorities. While our client-facing professionals can be required to travel regularly, and at times be based at client sites, our flexible working arrangements can help you to achieve a lifestyle balance.

• When you join EY, you will be supported to ensure that you are enhancing your skills from day one.
• Continuous learning, where you can develop the mindset and skills to navigate whatever comes next.
• As you grow and develop here, you’ll discover opportunities to help customise your career journey, so that it’s as unique as you are - success is defined by you, we will provide the tools and flexibility, so you can make a meaningful impact, your way.
• Transformative leadership, we will give you the insights, coaching and confidence to be the leader the world needs.
• Diverse and inclusive culture, you will be embraced for who you are and empowered to use your voice to help others find theirs.
• We have embraced Hybrid working at EY adding greater flexibility and autonomy to the roles of our employees.

About EY

As a global leader in assurance, tax, transaction and advisory services, we’re using the finance products, expertise and systems we’ve developed to build a better working world. That starts with a culture that believes in giving you the training, opportunities and creative freedom to make things better. Whenever you join, however long you stay, the exceptional EY experience lasts a lifetime.

Inclusion & Diversity

We hold a collective commitment to foster an environment where all differences are valued and respected, practices are equitable and everyone experiences a sense of belonging: Inclusion, diversity, and equity are part of who we are at EY. We believe that the highest-performing teams maximize the power of different perspectives and backgrounds. These teams are both diverse and inclusive and are willing to invite and learn from other perspectives. Our ability to include various viewpoints into our mindsets, behaviours and operations is fundamental to driving innovation, building strong relationships, and delivering the best solutions for our clients.

We recognise the strength that comes from having a diverse workforce and building a culture where we support all our people to achieve their potential.You’llbe embraced for who you are and empowered to use your voice to help others find theirs.

As an equal opportunities’ employer, we welcome applications from people of all backgrounds. Reasonable accommodations are offered at every stage of our recruitment process.

We have embraced Hybrid working at EY adding greater flexibility and autonomy to the roles of our employees.

EY | Building a better working world

EY is building a better working world by creating new value for clients, people, society and the planet, while building trust in capital markets.

Enabled by data, AI and advanced technology, EY teams help clients shape the future with confidence and develop answers for the most pressing issues of today and tomorrow.

EY teams work across a full spectrum of services in assurance, consulting, tax, strategy and transactions. Fueled by sector insights, a globally connected, multi-disciplinary network and diverse ecosystem partners, EY teams can provide services in more than 150 countries and territories.

EY refers to the global organization, and may refer to one or more, of the member firms of Ernst & Young Global Limited, each of which is a separate legal entity. Ernst & Young Global Limited, a UK company limited by guarantee, does not provide services to clients.