Senior Traffic Engineer

At Mott Mac Donald, we are driven by purpose and powered by brilliant people. As a trusted engineering, management, and development consultancy, we work with clients to solve complex challenges and deliver sustainable outcomes that make a meaningful difference for the communities we serve.

When you join us as an experienced professional, you will bring your expertise to work that matters while continuing to grow your career. You will collaborate with talented colleagues across disciplines and geographies, contribute your perspective, and help shape better outcomes through technical excellence, innovation, and integrity.

Build on your experience while helping shape what comes next. At Mott Mac Donald, you'll work alongside talented people on complex and rewarding projects that make a real difference. We value fresh perspectives, encourage collaboration, and provide opportunities to expand your skills, take on new challenges, and grow your career. Whether you're deepening your technical expertise, broadening your leadership experience, or exploring new opportunities across our business, you'll be supported by a team that is committed to helping you succeed.

Mott Mac Donald is seeking an experienced Senior Traffic Engineer to join our growing Southern California transportation team. This role will support a diverse portfolio of transportation projects, including major assignments with LA Metro, California High-Speed Rail, Olympic Games-related infrastructure programs, and other high-profile transportation initiatives across the region.

The successful candidate will provide senior-level technical expertise in traffic engineering, worksite traffic control, detour planning, and transportation management while serving as a trusted advisor to clients and agency stakeholders.

This role offers an opportunity to work on some of California's most visible transportation programs while helping to grow and strengthen our traffic engineering capability in Southern California.

This is an opportunity to play a key role in delivering major transportation investments across Southern California while working alongside a small but growing team of transportation professionals. You will have immediate involvement in high-profile projects, direct interaction with leading transportation agencies, and the opportunity to influence how critical infrastructure is planned, delivered, and managed throughout the region.

Responsibilities Lead the development, review, and approval of worksite traffic control plans, traffic management plans, and detour strategies for transportation infrastructure projects.

Provide technical expertise for construction traffic management, temporary traffic control, work zone safety, and traffic operations.

Support LA Metro assignments involving the review and approval of contractor traffic control plans for projects in construction and delivery.

Support California High-Speed Rail and other transportation agencies with third-party design reviews, traffic engineering oversight, and transportation management activities.

Contribute to transportation and mobility improvements associated with major regional programs, including Olympic Games-related projects.

Prepare, review, sign, and seal engineering documents and traffic control plans as required.

Coordinate with agencies including LA Metro, LADOT, Caltrans, local municipalities, and other transportation stakeholders.

Support the preparation of traffic studies, traffic management plans, transportation analyses, and design deliverables.

Utilize AutoCAD Civil 3D and related software tools to support project delivery where required.

Manage project tasks, schedules, budgets, and technical deliverables.

Build strong relationships with clients and agency personnel, serving as a trusted technical resource.

Mentor junior engineers and technical staff while supporting the ongoing growth of the Southern California transportation team.

Support proposal efforts, client presentations, and business development activities as opportunities arise.

Collaborate with multidisciplinary teams across highways, transit, rail, and civil infrastructure projects

Qualifications

Bachelor's degree in Civil Engineering or a related discipline.

California Traffic Engineer (TE) license required.

Minimum 10 years of traffic engineering experience in a consulting, public agency, or transportation-focused environment.

Strong experience in worksite traffic control, temporary traffic management, detour planning, and traffic…