Principal Mechanical Engineer – Building Services

AECOM; Dublin; On-site; EUR 65,000 - 85,000; Full time

Job summary

AECOM is seeking a Principal Mechanical Engineer in Dublin to provide technical leadership in delivering innovative mechanical building services designs across diverse projects.

The role involves leading multidisciplinary teams, managing client relationships, and ensuring compliance with standards. Candidates must have experience in healthcare, education, and transportation sectors, along with a relevant degree and chartered engineer status.

Qualifications

• Significant experience in design and delivery of mechanical building services projects.
• Proven experience leading multidisciplinary project teams.
• Strong technical knowledge of HVAC systems and sustainable building design.

Responsibilities

• Lead mechanical engineering design and delivery of major building projects.
• Manage multidisciplinary project teams and maintain strong client relationships.
• Ensure designs comply with Irish and international standards.

Skills

HVAC systems

Public health systems

Leadership

Client management

Communication

Education

Degree in Mechanical Engineering or Building Services Engineering

Chartered Engineer status (CEng)

Job description

Job Description

Start here. Grow here.

AECOM is seeking an experienced and motivated Principal Mechanical Engineer to join our growing Buildings + Places team in Dublin. This is an exciting opportunity to play a leading role in delivering innovative mechanical building services designs across a diverse portfolio of projects, including healthcare, education, railway stations, and mission‑critical data centres.

About the Role

As a Principal Mechanical Engineer, you will provide technical leadership, manage multidisciplinary design teams, and work closely with clients, architects, contractors and stakeholders to deliver high-quality, sustainable engineering solutions. You will contribute to the growth of our Building Services team while helping to shape some of Ireland's most significant infrastructure and building developments.

Key Responsibilities

• Lead the mechanical engineering design and delivery of major building projects across the healthcare, education, transport and data centre sectors.
• Manage multidisciplinary project teams, coordinating with electrical, structural, civil, architectural and specialist disciplines.
• Act as the technical lead on complex projects, ensuring designs comply with Irish and international standards, regulations and industry best practice.
• Develop innovative, energy‑efficient and low‑carbon mechanical building services solutions.
• Build and maintain strong client relationships, acting as a trusted technical advisor throughout project delivery.
• Manage project programmes, resources, budgets and commercial performance.
• Review and approve engineering calculations, specifications, reports and technical documentation.
• Mentor and develop junior engineers and support their professional development.
• Participate in business development activities, including proposal preparation, client presentations and project interviews.
• Contribute to continuous improvement initiatives and the development of engineering best practice across the business.

Qualifications

Ready to push the limits of what's possible?

Here's what we're looking for:

• Degree in Mechanical Engineering or Building Services Engineering.
• Chartered Engineer status (CEng) or working towards chartership with Engineers Ireland or an equivalent professional institution.
• Significant experience in the design and delivery of mechanical building services projects.
• Proven experience leading multidisciplinary project teams.
• Strong technical knowledge of HVAC systems, public health systems, heating and cooling plant, low‑carbon technologies and sustainable building design.
• Experience delivering projects within one or more of the following sectors:
  • Healthcare
  • Education
  • Railway stations and transport infrastructure
  • Mission‑critical data centres
• Excellent communication, leadership and client management skills.
• Strong understanding of Irish Building Regulations, CIBSE guidance, relevant British Standards and European Standards.

Additional Information

All newly hired employees are required to attend an in‑person Day 1 onboarding at an AECOM office location as a condition of employment.

We are a Disability‑confident Employer and will offer an interview to applicants who have a disability or long‑term condition, who meet the minimum essential criteria for the role. If you would like to apply through the Disability Confident Interview Scheme, please let us know using [e-mail].

All your information will be kept confidential according to EEO guidelines.