Senior Transformation Consultant with OneStream

Ernst & Young Advisory Services Sdn Bhd; Katowice; On-site; PLN 70,000 - 90,000; Full time

Job summary

A global consulting firm in Poland is looking for a Senior Finance Consultant to enhance financial reporting processes. This role requires expertise in OneStream deployment and considerable experience in financial management systems. Candidates should possess strong consulting skills and a master's degree in Finance and Accounting. The firm offers a dynamic environment with opportunities for global collaboration and personal growth.

Benefits

Continuous learning opportunities

Flexible work arrangements

Diverse and inclusive culture

Qualifications

• Proficiency in OneStream application including setup, configuration, and customization.
• Strong understanding with finance data modeling within OneStream.
• Experience with OneStream data integration tools and ETL processes.

Responsibilities

• Support clients with services in accounting and transactions.
• Lead OneStream deployment projects.
• Work in teams deploying and optimizing OneStream for financial management.

Skills

Data analytics

English proficiency

Project Management

Flexible and adaptable

Team player

Education

Master degree in Finance and Accounting

Tools

OneStream

SQL

PowerBI

ERP (SAP, Dynamics)

Job description

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Other locations: Anywhere in Country

Date: 29 Sept 2025

Requisition ID: 1613518

The opportunity

EY GDS Poland is offering an exciting opportunity within our Finance Consulting Practice. We are seeking a Senior Finance Consultant with expertise in OneStream deployment. In this role, you will support our clients in creating and maintaining high-quality financial reporting, including the deployment and optimization of OneStream solutions. You will work on client projects within various environments, improving business processes and functions through advanced data analysis. Your responsibilities will also include developing and implementing new IT-based solutions in the area of data analytics and financial management systems. You will work closely with clients to assess their needs, execute plans, and provide ongoing support to ensure successful outcomes.

Your key responsibilities

• Finance and Reporting:Support clients with services in accounting and transactions, assist with challenges in consolidation and reporting, and lead OneStream deployment projects.
• Accounting Standards:Assess the impact of different standards (HGB, IFRS, US GAAP) on complex accounting issues, with a focus on leveraging OneStream capabilities to meet these standards.
• Digitalization of financial processes:Work in teams that combine accounting expertise with IT and process competence deploying and optimizing OneStream for financial management.

Skills and attributes for success

• Core Consulting skills such as data analytics and interpretation, applying structured problem solving skills, Project Management skills and the development of Market insights and intelligence.
• Good articulation skills is a must
• Proficiency in English
• Flexible and adaptable; able to work in ambiguous situations
• Able to work effectively at all levels in an organization
• Capability to influence others and move toward a common vision or goal
• Must be a team player and able to work collaboratively with and through others

To qualify for the role, you must have

• Proficiency in OneStream application including setup, configuration, and customization.
• Strong understanding with finance data modeling within OneStream, financial reports and statements and knowledge of finance consolidation.
• Experience with OneStream data integration tools and ETL processes, including data migration for prior periods, postings, and understanding of financial statements.
• Knowledge of SQL and databases.
• Familiarity with other business intelligence (BI) and Corporate Performance Management (CPM) tools.
• Ability to provide accounting advice and guidance on various process transition-related topics.

Ideally, you’ll also have

• Knowledge of the following solutions: reporting (PowerBI), ERP (SAP, Dynamics), platforms for finance (Anaplan, Tagetik).
• Translate business requirements to technical language and model.
• Good experience in Chart of accounts (CoA) design.
• Ability to effectively prioritize and execute tasks in a high-pressure environment.
• Managing/supervising teams of people on project work.
• Open to travel (Domestic & International).
• Master degree in Finance and Accounting or any other related
• 5+ years of total consulting experience
• 2+ years’ experience in Business Process Transition and Business Finance Transformation
• Relevant certifications in OneStream are highly beneficial.

What we look for

• A Team of people with commercial acumen, technical experience and enthusiasm to learn new things in this fast-moving environment
• Opportunities to work with EY Advisory practices globally with leading businesses across a range of industries

What we offer

EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across ten locations – Argentina, China, Hungary, India, the Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom – and with teams from all EY service lines, geographies and sectors, playing a vital role in the delivery of the EY growth strategy. From accountants to coders to advisory consultants, we offer a wide variety of fulfilling career opportunities that span all business disciplines. In GDS, you will collaborate with EY teams on exciting projects and work with well-known brands from across the globe. We’ll introduce you to an ever-expanding ecosystem of people, learning, skills and insights that will stay with you throughout your career.

• Continuous learning:You’ll develop the mindset and skills to navigate whatever comes next.
• Success as defined by you:We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.
• Transformative leadership:We’ll give you the insights, coaching and confidence to be the leader the world needs.
• Diverse and inclusive culture:You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

About EY

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If you can demonstrate that you meet the criteria above, please contact us as soon as possible.

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