Principal Engineer

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Dublin, Ireland

Other

Yes

64b49af28aa7

7

16.08.2025

30.09.2025

Description:

What can you expect?

Marsh & McLennan Companies, Inc. is a global professional services firm, headquartered in New York City, with businesses in insurance brokerage, risk management, reinsurance services, talent management, investment advisory, and management consulting. It comprises the operating companies Marsh, Mercer, Guy Carpenter, JLT, and Oliver Wyman.

Marsh Tech is the IT organization that delivers solutions for the Marsh business as part of the broader MMC Tech team. Marsh Tech is seeking to appoint a Principal Engineer to lead development efforts around our strategic document management platform, called 'MShare'.

MShare uses SharePoint Online as the underlying document repository, with significant and complex custom-built apps and integration components deployed in front of SharePoint to provide the specific capabilities required by the Marsh business, including straight-through integration from transactional systems, and AI / LLM powered natural language search. The first stage of the MShare program has been completed, and the product is now live in over 46 countries, for over 18,000 users, with around 35 integrating applications.

This is only the beginning. MShare has a multi-year roadmap including further deployments across Marsh, re-development of custom apps and integrations using MMC strategic technologies, multi-geo deployment across Microsoft's Azure footprint, leveraging SharePoint features, and further use of AI / LLMs to enhance user experience.

The Principal Engineer will drive the technical direction and development of MShare over the coming years, leading a distributed technology team to deliver the roadmap and satisfy users. This is a great opportunity to shape this strategic technology for Marsh.

Responsibilities include:

• Leading distributed teams of engineers to build, improve, and maintain this critical application.
• Defining the technical strategy and roadmap, collaborating with IT and business stakeholders to design and implement solutions.
• Becoming a subject matter expert on these applications and the domain.
• Providing thought leadership on innovative technology deployment to gain competitive advantage.
• Hands-on leadership—coding, coaching, supporting team members, and demonstrating best practices.
• Promoting automation and quality, adopting DevOps practices, and fostering a shift-left mindset.
• Ensuring quality and standards in managing a business-critical platform with extensive deployment.
• Aligning with other MMC Tech groups and stakeholders to maintain consistency with company standards.

Requirements:

• Experience leading distributed teams on complex, globally-deployed, high-availability systems.
• Knowledge of modern application architectures and high-reuse development practices.
• Broad experience across technologies and business challenges.
• Familiarity with Agile, Scrum, Kanban, CI/CD.
• Ability to work effectively in a matrix organization with diverse teams.
• Experience as a Node.js developer, developing scalable APIs and applications, supporting project teams and collaborating with designers and front-end developers.

Preferred qualities:

• Proven leadership in delivering world-class technology platforms.
• Deep technical expertise across various technologies and business issues.
• Experience with large-scale, critical, global solutions, including SRE practices.
• Ability to relate insurance business concepts to technical design for improved outcomes.
• Natural leadership and excellent communication skills across all organizational levels.

Why join us?

• Opportunities for professional growth, interesting work, and supportive leadership.
• An inclusive culture with talented colleagues creating impactful solutions.
• Wide range of career opportunities, benefits, and rewards to support your well-being.

#MMCIC

Marsh McLennan (NYSE: MMC) is a global leader in risk, strategy, and people, with operations in 130 countries, advising clients across four main businesses: Marsh, Guy Carpenter, Mercer, and Oliver Wyman. With over $24 billion in revenue and more than 90,000 employees, we help build confidence to thrive through diverse perspectives. For more, visit marshmclennan.com and follow us on LinkedIn and X.

We are committed to diversity, inclusion, and flexibility, aiming to attract and retain top talent and support all candidates, including those with disabilities, throughout the recruitment process. We support hybrid working, requiring colleagues to work from their local office or onsite with clients at least three days per week, with designated "anchor days" for team in-person collaboration.