Senior Traffic Engineer

LJB Inc.; Miamisburg (OH); On-site; USD 114,000 - 140,000; Full time

Job summary

LJB Inc. is seeking a Senior Traffic Engineer to support and grow our Transportation Practice in Ohio.

You will lead design and analysis efforts for traffic operations, safety studies, signal timing, and corridor studies while mentoring junior staff. Based in one of our Ohio offices (Dayton, Cleveland, or Columbus), the role emphasizes collaboration with civil and transportation engineers to deliver safe, efficient infrastructure.

Qualifications

• Bachelor's degree in civil engineering.
• P.E. license required.
• 7–15 years of experience in traffic engineering.
• Experience with Synchro/SimTraffic, HCS, SIDRA, TransModeler, VISSIM.
• Experience with AutoCAD/MicroStation/OpenRoads Designer.
• Knowledge of the Highway Capacity Manual.

Responsibilities

• Perform traffic impact studies.
• Conduct traffic operations analyses.
• Carry out safety studies.
• Design signal systems and timing plans.
• Maintain traffic control and corridor studies.
• Manage projects and client relationships.
• Occasionally visit work sites and travel as needed.

Skills

Teamwork

Mentoring

Client management

Problem solving

Communication

Education

Bachelor's degree in civil engineering

Tools

Synchro/SimTraffic

HCS

SIDRA

TransModeler

VISSIM

AutoCAD

MicroStation

Geopak

OpenRoads Designer

Microsoft Office

Job description

Description Join a Growing National Engineering Firm Shaping the Future of Infrastructure! As a growing, forward-thinking firm, LJB Inc. is expanding our impact across the country by delivering innovative, community-focused engineering solutions. Founded in 1966, we specialize in civil and structural engineering, with additional expertise in geospatial, safety, and environmental services. Our broad technical capabilities and diverse client base have allowed us to deliver successful projects in all 50 states and several countries. Within our Transportation Practice, LJB has spent more than five decades designing infrastructure that connects people, supports communities, and improves quality of life. As a full-service team, we bring deep technical expertise and a collaborative mindset to every project—creating safe, efficient, and forward-thinking transportation solutions. We are currently seeking an experienced Senior Traffic Engineer to support and grow our Transportation Practice in one of our Ohio offices (Dayton, Cleveland, or Columbus).

Salary Range: $114,000 - $140,000 based upon experience, certifications, and regional market standards.

Benefits: View our 2026 Benefits Summary

TRAFFIC ENGINEER ESSENTIAL FUNCTIONS:

• Technical engineering responsibilities may include:
• Traffic impact studies
• Traffic operations analyses
• Safety studies
• Signal system design
• Signal timing plans
• Maintenance of traffic
• Pavement markings and signage
• Highway lighting design
• Corridor studies
• Willing to balance performing design work and assisting in sales efforts.
• Project/task and client management.
• Maintain client relationships.
• Occasionally visit work sites, monitoring project progress and reporting findings.
• Ability to meet all safety requirements if/when visiting a work site.
• Occasional travel may be required.
• Other duties as assigned.

TRAFFIC ENGINEER- ESSENTIAL CREDENTIALS:

• Required Qualifications
• Education: Bachelor's degree in civil engineering.
• P.E. license.
• 7 to 15 years' experience.
• Experience with Synchro/SimTraffic, HCS, SIDRA, TransModeler, VISSIM, AutoCAD/MicroStation/Geopak/Open Roads Designer and Microsoft Office.
• Knowledge of the Highway Capacity Manual.
• Preferred Qualifications
• PTOE license.
• Experience with Travel Demand Modeling Software (TransCAD, CUBE), ArcGIS, SignCAD.
• Experience with ODOT and/or OH municipalities.
• Core Skills
• Ability to work in a team setting collaboratively with a group of traffic, transportation, and site/civil engineers.
• Ability to mentor, direct activities and supervise work of other engineers.
• Ability to identify project issues and facilitate resolution.
• Ability to analyze situations and identify ways to improve efficiency.
• Ability to react quickly and calmly to high-pressure situations.

WHY JOIN LJB?

This role offers the opportunity to take on meaningful traffic engineering work that directly shapes safer, more efficient transportation systems for communities across Ohio and beyond. As part of LJB's growing Transportation Practice, you'll contribute your technical expertise, collaborate with experienced professionals, and help deliver impactful infrastructure solutions while continuing to grow your career.

LJB Inc. is an equal opportunity employer and prohibits discrimination and harassment of any kind. We are committed to creating a diverse and inclusive workplace where all employees are valued, respected, and have the opportunity to succeed. Employment decisions are based on qualifications, merit, and business needs, without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, genetic information, marital status, or any other protected status under applicable law.