Finance Transformation EPM - Senior Manager - One Stream Solution Architect Location: Toronto
Other locations: Primary Location Only
Date: Sep 12, 2025
At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you.
The Opportunity
Recognizing the changing and fast-paced professional landscape, you will team with engagement leadership to bring our broad range of capabilities and insights to enhance the role and effectiveness of the Finance function. We are seeking One Stream Solution Architects to join our EPM practice.
A career in our EPM practice within Consulting services provides opportunities to work alongside Finance leaders to optimize their finance functions.
We help organizations achieve strategic alignment of their finance organization, implement service and cost improvement initiatives, and embed a performance management process and culture that unite the business around its core objectives.
Our EPM team sits within the Business Consulting Finance Transformation practice, which assists clients with:
Finance Transformation Strategy & Roadmap
FP&A;, Controlling Excellence & Management Reporting
Finance Operating Model Design
Finance & Accounting Process Improvement
Global Business Services including Shared Service Centers, Outsourcing
As an EPM practitioner, you will either support EPM components of projects in those areas or standalone projects focused on transforming and technology enabling:
FP&A; and Management Reporting
Integrated Business Planning/Supply Chain Planning
Automation of Reconciliations
Your Key Responsibilities
We are seeking a highly skilled and experienced One Stream Solution Architect to join our team. In this role,



you will be responsible for leading the implementation of One Stream modules, specifically focused on planning, budgeting, forecasting, integrated business planning/supply chain planning, and reporting.
Skills and Attributes for Success
Collaborating with clients, business analysts, and other stakeholders to gather requirements and understand business needs.
Designing and developing solutions using One Stream software that meet client's financial and performance management objectives.
Creating technical architectural designs and documentation, including data models, process flows, integration requirements, and security considerations.
Designing and developing One Stream solutions, including reports, workflows, forms, data integrations, and custom functionalities.
Writing efficient, maintainable, and scalable code in One Stream scripting languages.
Performing system configurations and customizations to meet specific client requirements.
Conducting unit testing and debugging to identify and fix software defects.
Participating in system integration activities, including data imports and exports, API integrations, and data validations.
Providing support and troubleshooting assistance to end-users and system administrators.
Creating technical documentation, including design specifications, test plans, and user guides.
Staying updated with the latest releases, features,



and functionalities of One Stream software.
Collaborating with cross-functional teams, including database administrators, business intelligence specialists, and infrastructure teams, to ensure seamless system operations.
Assisting in system upgrades, patches, and performance tuning activities.
Contributing to the continuous improvement of development processes and coding standards.
Assisting in pre-sales activities, including solution demonstrations, proposal development, and client presentations.
To Qualify for the Role, You Must Have
A strong academic record including a bachelor's degree and a minimum of 8 years’ experience in industry or with a recognized consulting firm.
Bachelor's degree in Finance, Accounting, Business Administration, Computer Science, or a related field. Advanced degree or relevant certifications are a plus.
Relevant One Stream certifications (such as One Stream Certified Implementation Consultant, Solution Architect, Developer, etc.)
Robust understanding of One Stream architecture, modules, and functionalities.
Proven experience as a Solution Architect, Technical Consultant, or similar role, with a focus on One Stream software.
Proficiency in One Stream configuration and administration, including metadata management, dimensionality, and security models.
Experience with integration between One Stream and other enterprise systems.
In-depth knowledge of finance and accounting principles, along with expertise in EPM processes and methodologies.
Ability to translate current customer spreadsheet or other financial systems to effective and efficient One Stream solution.
Deep understanding of planning processes, including G&A; Planning, HR Planning, Cap

📌 Finance transformation epm (Toronto)
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