Senior Cutover Manager

Status:  Permanent Full Time

Education Level: A four-year university degree in Engineering, Computer Science, Business Administration (with a project management focus), or a related discipline.

Base Location: Oshawa, ON

Shift: Days

Travel: 10%

Deadline to Apply: July 8, 2026

Salary Range: $1,664.34 - $2,333.49 Per Week

Electrify your career and help build a brighter tomorrow.

Every generation has a challenge that defines them. At OPG, we are calling on all innovators, disruptors, thought leaders and change-makers. Join us as we work to electrify life in one generation and build a sustainable future powered by our electricity, our ideas, and our people. Join OPG and make history.

Whether you work in the skilled trades or are a business professional, a career at OPG is an opportunity to electrify your life on -- and off -- the job.

JOB OVERVIEW

Ontario Power Generation (OPG) is looking for a dynamic, strategic and results-driven professional to join our team in the role of Senior Cutover Manager.

Reporting to the Manager, IT Product Delivery, this position is responsible to lead end-to-end cutover planning and execution for a SAP S/4HANA greenfield implementation with a strong focus on Finance (General Ledger, Period Close, Accounts Receivable, Accounts Payable, and Real Estate).

This role will own the integrated cutover strategy across SAP workstreams, data migration, and a portfolio of legacy system interfaces being introduced as part of the program. The Cutover Manager will also plan and coordinate post go-live/hypercare activities to ensure a stable transition to operations.

KEY ACCOUNTABILITIES 

• Plan and coordinate Finance cutover activities including: GL balances and open item handling, Period-end / year-end close considerations and blackout windows, AR/AP open items, aging, payments, billing, collections, dunning (as applicable), Bank interfaces, payment runs, lockbox (if in scope), Real Estate (RE) master data and transactional cutover considerations
• Coordinate with the data migration lead and functional teams to plan: Mock conversions / dress rehearsals, Final load sequencing and validation checkpoints, Reconciliation plans (e.g., trial balance tie-outs, subledger-to-GL reconciliation, open item reconciliation)
• Lead cutover planning for legacy system interfaces (inbound/outbound) being introduced or modified, including: Interface readiness, deployment, and connectivity validation, Message/file cutover approach (dual-run, parallel run, switch-over, decommission timing), Monitoring, error handling, support procedures, and ownership
• Plan and execute cutover rehearsals to validate task duration, sequencing, resources, and defect resolution.

QUALIFICATIONS

• Requires 4-year university degree in Engineering, Computer Science, Business Administration (with a project management focus), ERP implementations, or cutover management.
• Proven experience leading end-to-end cutover activities for large-scale ERP implementations (preferably SAP S/4HANA).
• Strong functional knowledge of SAP Finance processes (GL, AR, AP, period close, reconciliation) and their impact during cutover
• Demonstrated experience coordinating data migration activities, including mock conversions, final data loads, and reconciliation strategies.
• Experience managing cutover for system integrations and interfaces (inbound/outbound), including deployment, validation, and transition strategies.
• Strong understanding of reconciliation processes (e.g., trial balance tie-outs, subledger-to-GL, open items) and financial data validation.
• Proven ability to plan and execute cutover rehearsals (dress rehearsals), including sequencing, timing, issue resolution, and resource coordination.
• Excellent stakeholder management, leadership, and communication skills to coordinate across business, IT, data migration, and operations teams.

The successful candidate will exhibit uncompromising integrity and commitment to upholding corporate values, and the OPG Code of Business Conduct.

OPG is committed to fostering an inclusive, equitable, and accessible environment. If you require accommodation during the selection process, please contact View email address on jobs.opg.com

What makes a career at OPG different?

With operations across Ontario, OPG is one of the most diverse power producers in North America. As the largest generator in Ontario, we meet approximately 50% of the province’s electricity needs, largely from low-carbon sources like nuclear and hydro. 

As we work to achieve our vision of Electrifying life in one generation, OPG and our family of companies are also helping advance the development of new low-carbon technologies such as Small Modular Reactors (SMRs), refurbishment projects, and electrification initiatives to help power the growing demands of a growing economy. Join OPG and make history.

Please submit your application online at . OPG thanks all those who apply; however, only candidates considered for an interview will be contacted.

Please note: All job postings at OPG are to fill existing vacancies within our organization. 

OPG may use artificial intelligence (AI) tools as part of the applicant screening process. However, applications will also be reviewed by a member of our Recruitment team to ensure a fair and thorough assessment.

The base salary range considers many factors including, but not limited to experience, education, and training, including any collective agreement requirements for union represented positions. It is not typical for the salary to be offered near the top of the range, and salary is dependent on numerous factors. For management roles, the base salary range does not represent the total compensation package. The total compensation package for regular full-time management roles includes pay-for-performance programs for annual and medium time periods. Maintaining a high-performance culture and excellence is a core expectation of every member of our leadership team and is rewarded through the established compensation framework.

OPG is committed to employment equity. As such, we encourage applicants from equity-seeking communities (Indigenous Peoples, racialized persons, persons with disabilities, and women). We strongly believe that alleviating the under-representation of equity-seeking individuals will create a stronger OPG team and allow us to better serve the needs of our diverse communities.

In order to fulfill the above-mentioned purpose, priority in hiring may be given to qualified persons who self-identify as a member of equity-seeking groups as identified in the application process. This initiative constitutes a special program under the Human Rights Code/Canadian Human Rights Act.