Assistant Project Manager - Diamond Bar
Assistant Project Manager - Traffic Engineering (EIT/PE)
Location: Diamond Bar (Hybrid Flexibility)
Compensation: $45-$65/hr + bonus potential
A well-established, multidisciplinary engineering firm with a strong presence across Southern California is looking to bring on an Assistant Project Manager to support and help lead traffic-focused projects. This is an excellent opportunity for someone ready to step out of a purely technical role and grow into project leadership, client interaction, and team oversight.
The firm has long-standing relationships with Caltrans, local agencies, and private developers, and is known for delivering high-quality transportation and infrastructure solutions across the region.
What You'll Be Doing
- Support senior leadership on transportation and traffic engineering projects, bridging technical work and project delivery
- Oversee design and review of traffic signals, signing/striping, ITS, lighting, and traffic control plans
- Manage project schedules, budgets, and deliverables across multiple assignments
- Review plans and reports to ensure PS&E quality standards and client expectations are consistently met
- Mentor junior engineers and provide day-to-day guidance on technical work
- Assist with proposals, client communication, and overall project growth efforts
What They're Looking For
- 5-8+ years of traffic engineering experience
- Bachelor's degree in Civil Engineering (or related)
- EIT required; California PE (or ability to obtain shortly) preferred
- Strong experience with AutoCAD and/or MicroStation
- Familiarity with Caltrans or local agency PS&E standards is highly preferred
- Strong communication skills (both written and client-facing)
- Traffic Engineer (TE) license is a plus
Why This Role Stands Out
- Clear path into project management and leadership
- Exposure to a diverse project portfolio (public + private sector)
- Strong internal mentorship and growth environment
- Flexible work setup with competitive hourly compensation
- Full benefits package including medical, dental, 401k, PTO, holidays, and profit sharing
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