Marsh McLennan

Senior Lead AI Developer

Marsh McLennan$195K — $285K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's or advanced degree in Computer Science, Data Science, or a related field.
  • Experience delivering large-scale AI/ML solutions that provide ongoing value.
  • Proficiency with programming languages applicable to AI development and deployment.
  • Familiarity with AI governance, bias, and risk management.
  • Solid mathematical foundation in statistics and calculus, with practical ML application experience.

Responsibilities

  • Explore data to develop AI solutions addressing key business challenges.
  • Collaborate with leadership to shape proposals leveraging AI and engineering strengths.
  • Design and implement LLM-based systems for production environments.
  • Stay updated on emerging AI methodologies and modeling techniques.
  • Promote best practices in modeling and data engineering across projects.

Benefits

  • Hybrid work flexibility, combining remote work and in-office collaboration.
  • Access to continued professional development opportunities.
  • Partnership with diverse teams on varied AI challenges.
  • Empowerment to influence and craft AI solutions directly with clients.
  • Engagement with a global consulting leader with vast resources and reach.
Full Job Description
Company:
Oliver Wyman

Description:

LOCATIONS

We are hiring across our OW offices including but not limited to: Toronto and Montreal.

Practice Overview

At Oliver Wyman Quotient we partner with clients to deliver breakthrough outcomes for their toughest AI challenges.

We blend the power of AI technology with deep industry expertise to tackle disruption and create impact. By building strong capabilities and culture, we accelerate and embed AI transformation. Our people co-create and grow customer-focused solutions that win. We modernize technology and harness value from data and analytics. We build resilience so our clients are ready for tomorrow's risks and optimize operations for the future. Above all, we work collaboratively with our clients' leaders, employees, stakeholders, and customers to jointly define, design, and achieve lasting results.

____

The Role And Responsibilities

No two OW Quotient projects are the same. You'll be working with varied and diverse teams to deliver unique and unprecedented products across industries. As a Senior Lead AI Developer, you are primarily responsible for managing technical projects and helping teams design and build AI/ML systems and pipelines that consistently drive solutions to be extensible and production quality. You are an expert in selected domains and can contrast methods and select appropriate approaches based on the data or modelling problem at hand. As an AI Developer, you will work alongside Oliver Wyman partners in Quotient and other practice groups, engage directly with clients to understand their business challenges, and craft appropriate solutions to be delivered through collaboration with other OW Quotient specialists and consultants.

Your responsibilities will include, for example:

  • Exploring data and crafting AI solutions to answer core business problems
  • Working with Partners and Principals to shape proposals that leverage our AI and engineering capabilities
  • Building and deploying LLM-based agent systems in production
  • Keeping up with your domain's state of the art & developing familiarity with emerging modelling and data engineering methodologies
  • Advocating application of best practices in modelling, code hygiene and data engineering
  • Leading the development of proprietary AI/ML solutions, algorithms, or analytical tools and infrastructure on projects and asset development


Your Experience & Qualifications

You are a well-rounded technologist who brings a wealth of real-world experience and:

  • Technical background in computer science, data science, machine learning, artificial intelligence, statistics or other quantitative and computational science
  • Compelling track record of designing and deploying large-scale technical solutions, which deliver tangible, ongoing value including:
    • Direct experience having built and deployed robust, complex production systems that implement modern artificial intelligence at scale
    • Comfort in environments where large projects are time-boxed, and therefore consequential design decisions may need to be made and acted upon rapidly
  • Demonstrated fluency in modern programming languages for artificial intelligence / agents, covering the end-to-end AI development lifecycle:
    • Knowledge of one or more agentic platforms , including but not limited to: Azure Foundry, AWS Bedrock, Gemini Enterprise Agent Platform
    • Deep familiarity with the architecture, performance characteristics, and limitations of compound AI systems, including retrieval-augmented generation, tool use, agentic memory, and multi-agent orchestration
    • Experience designing and operating evaluation frameworks and observability tooling to measure AI system quality, detect failure modes, and maintain performance in production
    • Proficiency in LLM system design, including prompt engineering, context and token management, structured output, fine-tuning tradeoffs, and cost/latency optimization
    • A history of compelling side projects or contributions to the Open-Source community is valued but not required
  • Practical awareness of AI risk, bias, and governance, including how to identify and mitigate failure modes in high-stakes or regulated environments
  • Solid theoretical grounding in the mathematical core of the major ideas in AI/ML:
    • Applied understanding of a class of modelling or analytical techniques
    • Fluency in the mathematical principles and generalizations of data science - e.g., Statistics, Linear Algebra and Vector Calculus
    • Experience presenting at high-impact AI/ML developer conferences and solid connections to the AI/ML developer community (e.g., via meetups, open-source contributions, continuing relationships with academics, etc.) is highly valued
  • Interest/background in Financial Services, Healthcare and Life Sciences, Consumer, Retail, Energy, or Transportation industries

About Oliver Wyman

Oliver Wyman is a global leader in management consulting. With offices in more than 70 cities across 30 countries, Oliver Wyman combines deep industry knowledge with specialized expertise in strategy, operations, risk management, and organization transformation. The firm has more than 6,000 professionals around the world who work with clients to optimize their business, improve their operations and risk profile, and accelerate their organizational performance to seize the most attractive opportunities.

Oliver Wyman is a business of Marsh McLennan [NYSE: MMC]. Marsh McLennan is a global leader in risk, strategy and people, advising clients in 130 countries across four businesses: Marsh, Guy Carpenter, Mercer and Oliver Wyman. With annual revenue of $24 billion and more than 90,000 colleagues, Marsh McLennan helps build the confidence to thrive through the power of perspective. For more information, visit oliverwyman.com, or follow on LinkedIn and X.

For more information, visit www.oliverwyman.com.

Follow Oliver Wyman on Twitter @OliverWyman.

The applicable base salary range for this role is $195K to $285K CAD.

The base pay offered will be determined on factors such as experience, skills, training, location, certifications, and education. Decisions will be determined on a case-by-case basis.

In addition to the base salary, this position may be eligible for performance-based incentives.

Marsh McLennan is committed to hybrid work, which includes the flexibility of working remotely and the collaboration, connections and professional development benefits of working together in the office. All Marsh McLennan colleagues are expected to be in their local office or working onsite with clients at least three days per week. Office-based teams will identify at least one "anchor day" per week on which their full team will be together in person.

#OWCapabilities

About Marsh McLennan

Marsh McLennan Careers

Join the exceptional team at Marsh McLennan, a global leader in professional services, offering unparalleled job opportunities in insurance, risk management, and consultancy. As the company propels forward, it invites dedicated professionals to contribute to a culture of innovation, leadership, and growth.

Work You’ll Do

At Marsh McLennan, you will engage with complex challenges that push the boundaries of your skills and knowledge. Our team thrives on diversity and the shared goal of delivering impactful solutions to our clients worldwide. By joining us, you will be part of a culture that values diversity training and leadership development, ensuring every team member is equipped for success.

Explore Professional Growth

Marsh McLennan is committed to the professional growth of its employees. Whether you are seeking a position that offers a path to leadership or looking for robust internship programs to kickstart your career, Marsh McLennan provides the resources and global platform to propel your ambitions into achievements. Our benefits package is designed to support the well-being and continuous professional development of all staff, from entry-level to senior leadership roles.

Innovative Work Environment

Our company is at the forefront of industry innovation. The collaboration between experienced professionals and fresh talent generates dynamic solutions that keep Marsh McLennan at the cutting edge of the industry. Our team is encouraged to lead with creativity and embrace new ideas, driving the company’s legacy of pioneering industry-first solutions.

Join Our Team

Marsh McLennan is hiring! Explore the multitude of job opportunities on our careers page, from strategic advisory roles to operational excellence positions. We look for passionate, curious, and solution-driven team players. Enhance your career with Marsh McLennan, where your skills will be honed through challenging projects and high-impact strategies.

Networking and Career Advancement

Networking at Marsh McLennan opens doors to enriching connections and countless opportunities within the industry. Our professionals benefit from an environment that fosters networking through events, professional groups, and collaborative projects. With Marsh McLennan, career advancement is not just a possibility—it is an expectation.

Prepare for Your Interview

Ready to apply? Make sure your resume highlights your most relevant experiences and skills tailored to the position you are applying for. Our interview process is designed to understand your capabilities and fit with our team’s goals and values. Prepare to discuss how your background, experiences, and professional aspirations align with the opportunities at Marsh McLennan.

Stay Connected

Keep up to date with the latest from Marsh McLennan: - **Career Insights**: Gain insider perspectives and industry-leading insights through our careers blog. - **Job Alert Emails**: Personalize your subscription to receive job alerts and the latest news tailored to your preferences. Discover the rewarding career opportunities awaiting at Marsh McLennan, where your professional journey is just the beginning. Join us in shaping a future defined by insight, integrity, and innovation.
Learn more about Marsh McLennan
Size
83,000 employees
Market Cap
$82.6 billion
Industry
Net Income
$2 billion
Founded
1914
5 Year Trend
+8.5%
Revenue
$17.2 billion
NASDAQ

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