Marsh & McLennan Companies

Software Engineer (Generative AI and Innovation)

Marsh & McLennan Companies
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2 hours ago
Dublin, IrelandMid Level

Responsibilities

  • Own medium-scale features and components end to end, from prototypes through production-ready solutions.
  • Build practical AI-powered and conventional applications that solve business and client problems.
  • Develop LLM workflows using prompt engineering, tool use, structured outputs, RAG, retrieval pipelines, and agent patterns.
  • Build and maintain evaluation harnesses and contribute to reliable, responsible, and cost-efficient AI solutions.
  • Create reusable components, tools, and patterns for the wider Innovation team.
  • Contribute to technical design discussions, experimentation, hackathons, and the broader technology community.
  • Collaborate with Dublin and international Innovation teams and business stakeholders.
  • Support technical quality and junior colleague development through code reviews and pairing.

Requirements

  • Typically 2–5 years of software engineering experience with a record of independently delivering features.
  • Experience contributing to production-grade applications.
  • Hands-on JavaScript and TypeScript development with a framework such as React, Vue, or Angular.
  • Backend experience with Node.js, NestJS, or similar technologies.
  • Experience using Python to build AI-powered workflows, integrations, or applications.
  • Understanding of integrating AI into products and business processes through APIs.
  • Hands-on experience with LLMs, including prompt design, tool use, and structured outputs.
  • Familiarity with RAG, retrieval pipelines, and embeddings.
  • Exposure to modern agent patterns and multi-step, tool-connected workflows.
  • Working knowledge of AWS and Kubernetes.
  • Preferred experience taking features from experimentation through production use.
  • Preferred curiosity about agent ecosystem standards such as Model Context Protocol.
  • Preferred exposure to vector databases, semantic search, AI evaluation frameworks, testing approaches, and AI guardrails.
  • Good communication, practical problem-solving, cross-functional collaboration, and willingness to support others.

Benefits

  • Hybrid Dublin position requiring at least three days per week in the office.
  • Professional development opportunities, interesting work, supportive leaders, and access to resources of a global organization.
  • Inclusive and flexible work environment with career opportunities, benefits, and rewards supporting well-being.
  • Reasonable support is available for candidates with disabilities or health conditions during recruitment.
Marsh & McLennan Companies

About Marsh & McLennan Companies

501-1,000 employees
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