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Senior Traffic Design Engineer, Professional Engineer
The Mannik & Smith Group, Inc.
Design
USD 120k-160k / year
Posted on Mar 10, 2026
Unmatched Comp Time Policy: Hours worked over 40 in a week can be reimbursed as additional pay at an equivalent hourly rate or banked as additional PTO.
At Horrocks, we believe the best work comes from companies with values, that our people are our greatest resource, and that we have a responsibility to the communities where we live and work. As a Senior Traffic Design Engineer, P.E., you will bring deep technical expertise and leadership to support mid to large scale transportation projects, with a strong focus on Maintenance of Traffic (MOT) and/or Signing and Pavement Marking design and program management.
At Horrocks, we believe the best work comes from companies with values, that our people are our greatest resource, and that we have a responsibility to the communities where we live and work. As a Senior Traffic Design Engineer, P.E., you will bring deep technical expertise and leadership to support mid to large scale transportation projects, with a strong focus on Maintenance of Traffic (MOT) and/or Signing and Pavement Marking design and program management.
This role serves as a technical lead and mentor, coordinating with multidisciplinary teams and public agencies to deliver high quality traffic control and signing and striping plans that meet applicable standards and agency requirements.
- Department
- Transportation
- Employment Type
- Full Time
- Location
- St. George, UT
- Workplace type
- Onsite
- Compensation
- $120,000 - $160,000 / year
What are the core responsibilities for the role?
- Lead the development of Maintenance of Traffic (MOT) plans for large and complex transportation projects, including phased construction, detours, and temporary traffic control
- Perform analysis, design, and plan sheet preparation for signing, striping, and MOT on interstates, freeways, highways, interchanges, and intersections
- Serve as technical lead on mid to large scale traffic design tasks, ensuring quality control and compliance with MUTCD, AASHTO, and applicable DOT standards
- Prepare studies, technical reports, construction plans, specifications, and estimates from project kickoff through delivery
- Coordinate and lead meetings with clients, public agencies, and project stakeholders
- Work closely with project managers, engineers, technicians, and support staff to deliver successful transportation projects
- Manage assignments, workloads, and training or mentoring of traffic design staff
- Coordinate with other managers and discipline leads to share resources and align project efforts
- Support business development, client relationships, and long-term program delivery when applicable
Qualifications, Skills, and Competencies:
- Bachelor’s degree in civil engineering from an accredited college or university
- Professional Engineering (PE) license required
- 10+ years of experience in traffic engineering analysis and design
- Strong background in MOT and or signing and pavement marking design
- Experience leading technical teams and mentoring engineers
- Knowledge of Bentley ProjectWise, MicroStation, InRoads, OpenRoads, AutoCAD Civil 3D, and other applicable transportation software
- Hands on experience with Synchro, SimTraffic, Vistro, Vissim, or Aimsun preferred
- Experience with UDOT or other DOT standards, procedures, and plan preparation
- Familiarity with local, regional, state, and federal design criteria
- Established relationships with transportation agencies preferred
- Excellent written, verbal, and interpersonal communication skills
- Proven ability to meet project deadlines and budgets
- Strong organizational skills, attention to detail, and client focused mindset
- Desire to grow professionally and help build and strengthen the traffic design team
Why would a candidate want this job?
At Horrocks, you can expect a competitive base salary and award-winning benefits. Including, but not limited to:
- Medical, dental, vision, life, and disability insurance
- Generous paid time off
- 401(k): 50% match of contribution up to 6%
- Professional development opportunities including in-house training
- Paid professional organization membership and professional licensure
For more information, visit our website at www.horrocks.com
Equal Opportunity Employer including disability and protected veteran status
#LI-JP2
Equal Opportunity Employer including disability and protected veteran status
#LI-JP2
About Horrocks
Founded over 55 years ago, Horrocks has a long-standing history of delivering exceptional infrastructure solutions. At the heart of our company is a commitment to providing essential resources for communities and improving quality of life through innovative and forward-thinking engineering practices. Our teams of dedicated professionals deliver high-quality results on every project and are driven by a culture of service. With our slogan "What we do matters," we strive to make a meaningful difference in the world through our work. Our approach is holistic, taking into consideration all aspects of a project to ensure it meets the needs of the present while preparing for the future. We invest in our people and culture, recognizing that our success is dependent on the talents and dedication of our team. At our firm, we don't just build infrastructure — we build better communities.
Our Hiring Process
Stage 1:
Applied
Stage 2:
Initial Screening
Stage 3:
1st Interview
Stage 4:
Offer
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