AI Engineer

Country: Ireland

Req ID: 526260

Job Type: Full Time

Workplace Type: Hybrid

Seniority Level: Mid-Senior Level

About CRH

We are CRH, and we are committed to contributing to a more resilient and sustainable built environment. We understand the wider impact our businesses can make in supporting human activity. We continue to do this through the delivery of unique, superior building materials and products for use in road and critical utility infrastructure, commercial building projects and outdoor living solutions.

CRH (NYSE: CRH, LSE: CRH) is the leading provider of building materials solutions that build, connect and improve our world. Employing c.78,500 people at c.3,390 operating locations in 28 countries, CRH has market leadership positions in both North America and Europe. As the essential partner for transportation and critical utility infrastructure projects, complex non-residential construction and outdoor living solutions, CRH’s unique offering of materials, products and value-added services helps to deliver a more resilient and sustainable built environment. The company is ranked among sector leaders by Environmental, Social and Governance (ESG) rating agencies. A Fortune 500 company, CRH’s shares are listed on the NYSE and LSE.

Without you noticing our products, we are everywhere you live, work, and relax.

Our project portfolio includes some of the most sustainable and cutting-edge building projects around the world. Think of the asphalt on the Silverstone Grand Prix Circuit, the Paris Metro Rail project, but also the Louis Vuitton Museum in Paris, parts of the Burj Khalifa, and the Kennedy Space Centre.

Learn more about us through the following Link.

Position Overview

We build AI Agents on an internal Agentic AI platform. The platform supports creating and configuring agents, connecting capabilities via MCP, and enriching agent responses using a file-based knowledge base with built-in document and data RAG capabilities. We focus on building high business value, production-ready agents, integrations, and evaluation workflows.

We are looking for a strong mid-level AI Engineer with a hybrid profile — someone who can both build production-ready AI solutions and lead business-facing conversations to identify, qualify, and shape high-value use cases. You will design and build AI Agents on our internal Agentic AI platform, develop MCP servers, engineer prompts and agentic workflows, and work directly with business stakeholders to extract requirements, guide business case development, and assess the strategic value of proposed AI use cases.

Key Tasks and Responsibilities

Business Engagement & Use Case Development

• Lead structured discovery sessions with business stakeholders to extract requirements and map existing processes

• Assess and qualify inbound AI use case requests — evaluating feasibility, complexity, and business value

• Guide business teams through the process of building a business case for agentic AI initiatives

• Facilitate workshops and conversations to translate business problems into well-defined AI solution briefs

• Act as the bridge between business and engineering — communicating technical constraints and possibilities in accessible business language

• Collaborate with business stakeholders to gather requirements and translate business processes into agent workflows

• Design agent conversation flows and user experiences that align with business objectives, and iterate based on user feedback and business success metrics AI Engineering

• Create and configure new AI Agents on our Agentic AI platform

• Design, test, and iterate agent instructions/prompts (context engineering) to ensure correct and consistent behaviour

• Connect and configure tools via MCP (define tool contracts, validate behaviour, troubleshoot failures)

• Build new MCP servers when needed (wrap APIs/flows into tools