Principal Mechanical Engineer – Building Services

Company Description Work with Us. Change the World. At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations. There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. We're one global team driven by our common purpose to deliver a better world. Join us. Job Description Start here. Grow here. AECOM is seeking an experienced and motivatedPrincipal 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: As the successful candidate, you will have experience working across a range of sectors and will possess the following qualifications, skills, and experience:

• 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 Interested in the role or curious about life at AECOM? Follow us on LinkedIn, Facebook, Instagram, and YouTube to explore our AECOM voices, employee stories, latest projects, and much more! For further information about the role, reach out to the recruiter on LinkedIn Colum Calnan. At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. _To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment._ About AECOM AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy and the environment, our public- and private-sector clients trust us to solve their most complex challenges. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical and digital expertise, a culture of equity, diversity and inclusion, and a commitment to environmental, social and governance priorities. AECOM is a Fortune 500 firm and its Professional Services business had revenue of $16.1 billion in fiscal year 2025. See how we are delivering sustainable legacies for generations to come at aecom.com and @AECOM. Freedom to Grow in a World of Opportunity You will have the flexibility you need to do your best work with hybrid work options. Whether you’re working from an AECOM office, remote location or at a client site, you will be working in a dynamic environment where your integrity, entrepreneurial spirit and pioneering mindset are championed. You will help us foster a safe and respectful workplace, where we invite everyone to bring their whole selves to work using their unique talents, backgrounds and expertise to create transformational outcomes for our clients. AECOM provides a wide array of compensation, benefits and well-being programs to meet the diverse needs of our employees and their families. We’re the world’s trusted global infrastructure firm, and we’re in this together – your growth and success are ours too. Join us, and you’ll get all the benefits of being a part of a global, publicly traded firm – access to industry-leading technology and thinking and transformational work with big impact and work flexibility. As an Equal Opportunity Employer, we believe in each person’s potential, and we’ll help you reach yours. 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. Please let us know using this email address ReasonableAccommodationsUKI@aecom.com if you would like to apply through the Disability Confident Interview Scheme. All your information will be kept confidential according to EEO guidelines. ReqID: J10155067 Business Line: B&P - Buildings & Places Business Group: DCS Strategic Business Unit: Europe & India Career Area: Engineering Work Location Model: Hybrid