Implementation Solutions Project Manager

Why Great Gray? At Great Gray Group, we strive to set the bar for the retirement services industry. Our goal is to deliver advanced retirement solutions that combine our core fiduciary services with robust investment options, innovative technology, and dedicated client service. We focus on making choices clearer, transitions smoother, and the client experience more delightful. Complacency isn't in our vocabulary. Every day, we look for opportunities to better serve our clients, be an excellent business partner, and earn the trust of those who rely on us. 

The Role

Great Gray is looking to add an experienced Senior Implementation Solutions Project Manager to our Implementation Solutions team**.** This individual will serve as a strategic driver of complex, high-stakes implementation projects including mergers and acquisitions, private asset onboarding, and systems integrations ensuring delivery on time, on scope, and aligned to client expectations. The role requires a polished communicator, a rigorous planner, and a steady leader who thrives in a fast-moving environment. 

Location

This position will work from our B****oston, MA office. Great Gray currently supports a hybrid work model with 4 days onsite, and 1 day remote.

Visa sponsorship or transfer of an existing visa is not available for this position. Applicants must be authorized to work directly for any employer in the United States without visa sponsorship or transfer.

Responsibilities 

• Lead end-to-end project management for complex implementation engagements, including full project lifecycle planning, scope definition, resource coordination, and risk management.
• Develop and maintain detailed project plans, status reports, RAID logs, and executive dashboards; proactively surface issues and drive resolution.
• Manage multiple concurrent projects simultaneously while maintaining high standards of quality and client service.
• Partner with internal teams — legal, compliance, operations, technology, and client services — to ensure alignment and seamless execution.
• Drive project management activities supporting M&A transactions, including due diligence coordination, integration planning, data migration, and Day 1 readiness.
• Coordinate across workstreams to track milestones, manage dependencies, and ensure integration activities are completed within defined timelines.
• Develop communication plans, cutover playbooks, and transition documentation to support M&A events from announcement through stabilization.