We are seeking a Senior Traffic Engineer to join our Transportation Team. In this senior role, you’ll bring deep technical expertise in traffic egineering and transportation planning to deliver smart, safe, and sustainable mobility solutions. This position is an opportunity to guide projects, mentor staff, and directly shape infrastructure that impacts communities across Pennsylvania.

Work Environment

Hybrid: Three days in-office.

Locations: Lancaster, Mechanicsburg, Lehigh Valley, or Pittsburgh

Position Summary / What You’ll Do

As a Senior Traffic Engineer, you will lead traffic engineering design and analysis, manage transportation projects, and serve as a technical resource to clients and colleagues. You’ll play a key role in advancing RETTEW’s transportation practice and ensuring high-quality project delivery.

Responsibilities / Day-to-Day

\- Lead traffic studies, signal design, corridor planning, and safety analyses

\- Manage projects from planning through delivery, ensuring technical excellence and client satisfaction

\- Coordinate with municipalities, DOTs, MPOs, and other stakeholders

\- Develop proposals, scopes, and budgets for traffic/transportation projects

\- Provide guidance and mentorship to junior engineers and technical staff

\- Ensure compliance with PennDOT, MUTCD, AASHTO, and related standards

Qualifications

Required:

\- Bachelor’s degree in Civil Engineering or related field

\- Professional Engineer (PE) license in PA (or ability to obtain quickly)

\- 8+ years of progressive experience in traffic engineering/transportation design

\- Proven ability to manage transportation projects and client relationships

\- Proficiency in traffic analysis/design software (Synchro, HCS, VISSIM, etc.)

Preferred:

\- PTOE certification

\- Familiarity with PennDOT ECMS and processes

\- Experience mentoring and developing engineering staff

\- Strong business development skills