Principal Engineer - Roads, Public Transport, & Greenways

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.

Start here. Go further here. 

Shaping Ireland's Transport Future (Roads, Public Transport, and Greenways) 

Accelerate Your Career in Infrastructure 

AECOM's Surface Transportation Team in Ireland—a 150+ strong professional network operating across Belfast, Dublin, Cork and  Galway – is thriving due to significant growth led by a robust pipeline of major Roads, Public Transport and Greenways programmes. 

We are seeking a driven Principal Engineer (or similar Principal Infrastructure Engineer) to join our 150+ strong transportation team in Ireland. 

We welcome applications from those with a strong industry experience and the ambition to progress from their current role and lead the delivery of our national infrastructure projects. We can offer you the technical, commercial experience on projects and a structured development approach to shape you into an AECOM certified Project Manager that will lead our projects for our clients. 

Why AECOM in Ireland? 

Impactful Projects: Work on some of the most significant transport programmes across the island of Ireland, directly influencing how people move. Our current portfolio includes: 

• Roads: Major road schemes including the N25 Midleton to Youghal Transport Project (Co. Cork), N2 Rath to Kilmoon (Co. Meath), N3 M50 to Clonee, N4 Mullingar to Longford (Co. Westmeath and Co. Longford), N17 Milltown to Gortnagunned (Co. Galway), M21 Adare Bypass (Co. Limerick), M21 Adare to Attyflin, Carlow Southern Relief Road & Multi Modal Corridor (Co. Carlow), N54 Tullybryan Realignment (Co. Monaghan), A24 Ballynahinch Bypass (Co. Down), and Newry Southern Relief Road (Co. Down).

• Public Transport: Delivery teams for the TII Luas Programme, the NTA BusConnects Programmes, NTA Bus Stop Design Team, and multiple major Irish rail projects.

• Greenways: A vast programme of Greenways (>300km) in the Republic of Ireland for TII and Local Authorities, including major greenway schemes like Barnesmore Gap Greenway and Carrigans to Lifford Greenway in County Donegal, the West Cork Greenways – Skibbereen Sections, and the Galway-Oughterard Greenway. 

We are deeply committed to your professional trajectory. The successful candidate will be actively supported on their path to becoming a certified Project Manager for AECOM, including: 

• Mentorship and coaching from our project management experts. 

• Formal technical, project management, and leadership training through AECOM University. 

• Exposure to client account management, project commercial management and work-winning processes to broaden your professional skillset. 

• Flexibility & Culture: You would be joining a young and dynamic team where we actively embrace our "Freedom to Grow" policy, offering genuine hybrid working options and flexible arrangements to ensure a healthy work-life balance. We prioritise candidates with the right behaviours and drive over specific current skillsets, investing significantly in training the next generation of engineers. 

Your Role & Responsibilities 

You will: 

• Be ready to take the next step in your career, delivering and coordinating design packages on complex infrastructure programmes. 
• Lead technical design teams on a diverse range of projects from concept to construction stage, including: 
• Major transportation projects (to DMRB UK & Ireland Standards). 
• Bus infrastructure projects (to LTN 1/24, NTA standards) 
• Greenway/active travel projects (to Cycling by Design/TII DMRB). 
• Deliver high quality deliverables and service to our clients, meeting our quality standards and their expectations within time and budget constraints. 
• Work seamlessly within a multidisciplinary team, co-ordinating and challenging inputs from other disciplines (e.g., drainage, structures, environmental). 
• Work directly with clients, local authorities, and stakeholders, guiding them through technical challenges and relevant statutory approval processes (Northern Ireland Roads Order, Republic of Ireland Planning Permission, Environmental Impact Assessment). 
• Develop our team, through mentoring of junior engineers and apprentices, contributing to AECOM’s culture of growth and continuous learning. 
• Help further expand our project portfolio through quality and commercial input to work winning. 

What we offer: 

• A robust and diverse portfolio of Roads, Public Transport and Greenway projects at various stages of delivery across the island of Ireland and UK. 
• A structured and transparent career model, allowing you to plan your progression with confidence and clarity. 
• Opportunities for commercial and management experience on projects to help you progress your career further 
• Career development opportunities via AECOM University and our industry leading Technical Excellence programme. 
• Flexible hybrid working 
• A merit led reward programme, recognising individual and team contributions to quality, safety and commercial successes. 
• A range of core and personalised benefits tailored to your lifestyle and well-being. 
• Social value opportunities, allowing you to volunteer and further support the communities your projects will benefit 
• Sports and Social Club with regular events across the team to build relationships across our teams. 
• Opportunities to become an accredited NEC Project Manager and/or Supervisor through external training. 

Ready to lead the delivery of sustainable transport solutions in Ireland? Apply today. 

Ready to push the limits of what’s possible? 

Here’s what we’re looking for: 

• Bachelor's or Master's degree in Civil Engineering or similar. International applicants will hold an equivalent Degree recognised by the International Engineering Alliance (from a signatory of the Washington Accord).
• Chartered Engineer, but we will consider strong candidates who demonstrate their progression toward Chartership soon. 
• Significant post-graduate experience in relevant areas such as civil engineering, highways, rail, light rail, public transport, or greenways/active travel. With an increasing portfolio of work in green energy transition, we would also welcome candidates with experience in the design and delivery of substation infrastructure and high voltage cable routes. 
• Solid understanding of, and experience in, the use of relevant design standards in the UK and Ireland applicable to our projects (e.g. the TII PMG and PMM processes and TII Standards, DMRB, DMURS, LTN 1/20, LTN 1/24, NTA Cycle Design Manual). 
• Solid understanding of, and experience in, the preparation of contract documentation for major transport projects, including typical forms of contract (NEC/Public Works Contract) and associated Specifications to MCHW/MCRW. 
• Experience with statutory planning and design approvals in the UK and/or Ireland, including supporting the preparation of environmental impact assessments for projects. 
• Ability to manage and lead teams of varying sizes and capabilities. 
• Experience in the commercial management of tasks and/or projects.

Come grow with us.

We celebrate diversity, including neurodiversity, and believe it enriches our team. We welcome applications from all backgrounds and abilities. If you are an applicant with a disability that requires reasonable accommodation to complete the application process, please contact us at [email protected]

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 Siobhan Osborne

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 [email protected]  if you would like to apply through the Disability Confident Interview Scheme.

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