Marsh McLennan

Generative AI Developer

Marsh McLennan$83K — $124K *
US-Anywhere
+ 112 other locationsRemote
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 10+ years of technology experience with a focus on AI applications
  • Expertise in developing AI-enabled applications and multi-agent architectures
  • Proficiency in Python for building production-grade AI services
  • Experience with LangChain, LangGraph, and similar frameworks
  • Knowledge of integrating AI systems with enterprise platforms and APIs
  • Familiarity with governance, security, and compliance in regulated industries
  • Ability to lead technical delivery while collaborating across teams

Responsibilities

  • Review system performance to identify API errors and latency issues
  • Develop and refine prompts to enhance model response accuracy
  • Integrate large language models with internal databases
  • Build data processing pipelines and manage vector databases
  • Fine-tune models using company-specific domain data
  • Collaborate with cross-functional teams to align on AI feature needs
  • Evaluate application safety and performance using automated testing tools
  • Optimize API token usage to maintain cloud efficiency
  • Deploy application updates using CI/CD pipelines

Benefits

  • Generous time off, including personal and volunteering days
  • Tuition reimbursement and opportunities for professional development
  • Remote work flexibility
  • Charitable contribution matching programs
  • Stock purchase opportunities
Full Job Description
Company:
Marsh McLennan Agency

Description:

A day in the life.

We are seeking Gen AI Developer who can build, test, and deploy applications powered by large language models and machine learning tools.

  • Review system performance: Check logs for API errors, latency issues, and output quality from deployed models.

  • Prompt engineering: Refine and test system prompt to improve response accuracy and reduce hallucinations.

  • Integrate APIs: Connect large language models (like GPT-4 or Claude) with internal databases using retrieval-augmented generation (RAG) frameworks.

  • Build pipelines: Write Python code to process data, embed documents, and manage vector databases (such as Pinecone or Milvus).

  • Fine-tune models: Adjust model weights or train smaller open-source models on domain-specific company data.

  • Collaborate with teams: Meet with product managers and software engineers to align AI features with user needs.

  • Run evaluations: Test the application for safety, bias, and edge-case failures using automated testing tools.

  • Optimize costs: Review token usage and API spending to keep cloud infrastructure efficient.

  • Deploy updates: Push new code updates to production environments using CI/CD pipelines.

Our future colleague.

We’d love to meet you if your professional track record includes these skills:

  • Designing and delivering AI-enabled applications and agentic systems in production

  • Building multi-agent architectures, including planner, executor, reviewer, critic, and supervisor patterns

  • Developing tool-calling, function-calling, and memory-enabled agents

  • Using LangChain, LangGraph, and similar frameworks for orchestration and workflow design

  • Applying DSPy, prompt engineering, and optimization techniques to improve quality and repeatability

  • Building production-grade AI services in Python

  • Integrating with leading LLM platforms such as Anthropic, OpenAI, and open-source models

  • Designing RAG solutions using vector databases

  • Integrating AI systems with enterprise platforms through APIs, workflows, events, and data services

  • Implementing observability, evaluation, and optimization for AI systems, including tracing, decision logging, and performance monitoring

  • Working within governance, security, privacy, and compliance frameworks, ideally in regulated industries

  • Leading complex technical delivery while collaborating effectively across engineering, product, business, risk, and compliance teams

  • Overall 10+ years of technology experience, including delivery of scalable, resilient digital products

Valuable benefits.

We value and respect the impact our colleagues make every day both inside and outside of work. Our culture promotes colleague well-being through robust benefits programs and resources, professional and personal development opportunities, and fulfillment through meaningful work.

Some benefits included in this role are:

  • Generous time off, including personal and volunteering

  • Tuition reimbursement and professional development opportunities

  • Remote work

  • Charitable contribution match programs

  • Stock purchase opportunities

To learn more about a career at MMA, check us out our or flip through recruiting brochure.

Follow us on social media to meet our colleagues and see what makes us tick:

#LI-REMOTE







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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