Senior Gen AI Developer
Marsh & McLennan Companies4 months ago
Dublin, IrelandSenior
Responsibilities
- Lead AI initiatives end to end from early concepts and prototypes through production-ready solutions.
- Build practical AI applications and integrations that solve real business and client problems.
- Shape technical direction, design choices, implementation approaches, and engineering best practices.
- Develop reusable tools, patterns, and approaches for prompt engineering, experimentation, evaluation, and solution design.
- Work with international Innovation teams and contribute to hackathons, knowledge sharing, mentoring, and technical capability development.
- Monitor and improve the performance, reliability, latency, quality, and cost efficiency of production AI systems.
Requirements
- Strong software engineering experience and senior-level technical judgment.
- Experience building and delivering production-grade applications.
- Hands-on JavaScript and TypeScript development with frameworks such as React, Vue, or Angular.
- Backend experience with Node.js, NestJS, or similar technologies, plus Python experience building AI-powered workflows, integrations, or applications.
- Strong understanding of distributed systems, APIs, and integrating AI into real-world products and business processes.
- Hands-on experience with LLMs, prompt design, tool use, structured outputs, application orchestration, RAG, retrieval pipelines, embeddings, and knowledge-grounded AI systems.
- Familiarity with modern agent patterns, multi-step workflows, tool-connected AI systems, AWS, Kubernetes, monitoring, and observability.
- Experience taking AI products from experimentation to production, or with MCP, vector databases, semantic search, scalable retrieval, AI evaluation, testing, and guardrails, is preferred.
- Track record of leading projects, mentoring others, defining engineering practices, communicating effectively, and working across engineering and business teams.
Benefits
- Professional development opportunities, interesting work, supportive leaders, and access to the resources of a global organization.
- Inclusive and flexible work environment with reasonable support available for candidates with disabilities or health conditions.
- Hybrid work arrangement based at the MMC Innovation Centre in Dublin, with at least three days per week in the office.
Tech Stack
Categories
About Marsh & McLennan Companies
Marsh McLennan is a global professional services firm providing risk, insurance and reinsurance brokerage, health, wealth, and management consulting to corporations, governments, and nonprofits. It operates through Marsh, Guy Carpenter, Mercer, and Oliver Wyman, earning fees and commissions for advisory, analytics, and placement services. Founded in 1905 and headquartered in New York, it is publicly traded on the NYSE under the ticker MMC.