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GBS IMO, Portfolio Manager

Job in Rolling Meadows, Cook County, Illinois, 60008, USA
Listing for: Arthur J. Gallagher & Co. (AJG)
Full Time position
Listed on 2026-10-26
Job specializations:
  • Management
    Change Management, Operations Management, Risk Manager/Analyst, Project & Program Management
Salary/Wage Range or Industry Benchmark: 120000 - 180000 USD Yearly USD 120000.00 180000.00 YEAR
Job Description & How to Apply Below
Introduction

At Gallagher Benefit Services, you’re a trusted partner to organizations navigating some of their most important people decisions.

We help clients build better workplaces, where people feel supported, empowered, and inspired to thrive. Whether it’s shaping benefit strategies, designing wellbeing programs, or advising on workforce challenges, the work you do here creates meaningful change for businesses and the people who power them.

We’re a community of bold explorers, trusted experts, and compassionate partners; working side by side to solve problems, and shape the future of work. Here, curiosity is encouraged, collaboration is second nature, and your ideas have room to grow.

If you’re looking for a place where your contribution matters and where you can help build a better world of work; think of Gallagher.

Overview

The Integration Management Office (IMO) Portfolio Manager is responsible for leading the governance, operational effectiveness, and continuous improvement of the organization's merger and acquisition integration portfolio. This role provides leadership and oversight for Program Managers and IMO support staff while ensuring integration activities are executed within a consistent governance framework.

The Portfolio Manager serves as the primary steward of IMO governance, providing executive visibility into integration performance, risks, changes, resource capacity, dependencies, and strategic alignment across the portfolio. Working closely with IMO leadership, Program Managers, functional leaders, and executive stakeholders, this role helps ensure the organization is positioned to successfully execute all acquisition integrations, while continuously improving the effectiveness, scalability, and maturity of the IMO.

In addition to governing the integration portfolio, the Portfolio Manager is responsible for developing team capabilities, driving process improvements, implementing supporting technologies, maintaining integration methodologies and standards, monitoring compliance with established governance processes, and leading internal strategic initiatives that enhance the IMO's ability to support a growing acquisition pipeline.

While acquisition integrations represent mandatory work driven by completed transactions, the Portfolio Manager helps leadership balance integration demand with available capacity and determines when discretionary strategic initiatives, process improvements, technology implementations, and operational enhancements can be successfully executed without impacting integration delivery.

How you’ll make an impact
  • People Leadership & Team Development
    • Lead, coach, mentor, and develop Program Managers and IMO support staff.
    • Establish performance expectations, development plans, and career growth opportunities for team members.
    • Provide leadership and guidance on integration management methodologies, governance processes, stakeholder management, and professional development.
    • Support workforce planning, staffing decisions, onboarding, succession planning, and talent development within the IMO.
    • Foster a culture of accountability, collaboration, continuous improvement, and operational excellence.
    • Ensure the IMO team has the skills, tools, resources, and capabilities required to support a growing integration portfolio.
    • Conduct performance management activities and support employee engagement initiatives.
  • Portfolio Governance, Capacity Planning & Risk Management
    • Serve as the owner of the IMO governance framework, ensuring integration activities are executed in accordance with established methodologies, standards, and organizational objectives.
    • Establish and maintain governance processes, decision-making structures, escalation paths, stage gates, reporting standards,…
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