Senior Highways & Traffic Engineer

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Start here. Grow here

Lead the Way in Sustainable Transport – Join AECOM as a Senior Highways & Traffic Engineer in Cardiff

AECOM’s Cardiff-based Streets team is looking for a Senior Engineer to deliver innovative Active Travel, local highways and urban realm projects across South Wales and beyond. This role offers the opportunity to shape safer, greener, and more inclusive transport networks that have a tangible impact on communities.

What You’ll Be Doing

As a Senior Engineer, you’ll take a key role in the development of Active Travel, traffic engineering and local highways schemes, from concept through to detailed design and implementation. You’ll bring your technical expertise and ability to guide project teams through all stages of design and delivery. You’ll manage technical outputs, mentor junior staff, and ensure the successful delivery of high-quality, sustainable transport solutions.

As a senior member of our collaborative, multidisciplinary team, you’ll work on high-profile projects for local authority clients such as the Cardiff Council, Swansea Council, Newport and Neath Port Talbot Council, and key regional frameworks including SWTRA, SW&M Wales CES and SEWTAPS.

Key Responsibilities:

• Coordinate the design and its delivery, under the guide of the Design Lead and Project Manager.
• Support the management of project timelines, risks, budgets, and deliverables.
• Prepare and review technical outputs including drawings, reports, and specifications, ensuring accuracy, compliance, and constructability.
• Liaise with the Client and external stakeholders
• Collaborate with multidisciplinary teams across AECOM
• Mentor junior staff, providing technical guidance and supporting their professional development.
• Champion Health & Safety best practices.

What we offer:

• Flexible hybrid working and varied working patterns (part-time, compressed weeks, or flexible hours).
• Professional development support, mentorship schemes, and training agreements with major engineering institutions.
• Career development opportunities via AECOM University, technical practice networks, and volunteering days.
• A range of core and personalised benefits tailored to your lifestyle and well-being.

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]

At AECOM, we value everyone's unique contributions and perspectives. If you meet some of the requirements above or have transferable skills you believe would benefit us, we would be delighted to hear from you!

Ready to push the limits of what’s possible?

Here’s what we’re looking for:

• Experience in concept, preliminary, and detailed design of Active Travel and highways or traffic engineering schemes.
• Experience in coordinating or assisting in the management of design projects.
• Strong knowledge of design elements such as drainage, junctions, and carriageway improvements.
• Familiarity with relevant design standards and guidance, including TSRGD, Manual for Streets, DMRB, and the Traffic Signs Manual.
• Understanding of Health & Safety and CDM regulations.
• Proficiency in AutoCAD and Microsoft Office.
• A degree in Civil Engineering or a related discipline.

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! #STAP

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.