Associate Engineer (Civil) | SD

Make a difference with your change – lead with ingenuity!

KOA Corporation (KOA), a Lochner Company, is a leading provider in professional services in transportation, engineering, mobility planning, and construction management for public agencies and private sector clients. Our staff includes registered civil and traffic professional engineers, certified transportation planners, certified road safety professionals, project/construction managers, and construction inspectors.

In December 2022, KOA joined Lochner, a national transportation infrastructure firm headquartered in Chicago, Illinois, providing planning, environmental, design, construction engineering and inspection, and right-of-way services for surface transportation, rail, transit, and aviation clients. Together, we have more resources and capabilities for delivering innovative solutions and enhancing the quality of life in the communities we serve.

  • Client-Focused: We are collaborative and attentive to the unique needs and goals of each project.

  • Performance-Driven: We are problem solvers dedicated to transforming transportation infrastructure challenges into opportunities for innovation.

  • Community-Minded: We are vested in the work we do as stewards of public funds used to improve the communities we serve.

  • Socially Responsible: We give back to our communities by supporting various charitable organizations and causes.

  • Growth Oriented: We invest in programs to attract, retain, and develop employees so KOA becomes a long-term home for top talent.

Our goals and strategies promote a diverse and inclusive workforce that feels empowered to make a difference in the world. Our vision is to create healthy and sustainable communities both within and outside of our organization, where current and future generations can thrive.

Are you ready to join us?


  • Assisting senior staff with highway and traffic engineering and design projects including signing & striping design; geometric design; traffic engineering studies; traffic signal and lighting design; work zone temporary traffic control plans; street and highway design; conducting field reviews; preparation of specifications and cost estimates; and completion of final documents for traffic and transportation engineering projects.


  • Bachelor’s Degree in Civil Engineering

  • The position requires a person with a strong knowledge of the California MUTCD, traffic and civil engineering concepts, and proficiency in CADD applications such as AutoCAD, Civil 3D, and MicroStation

The salary range for this position is between $75,000 and $90,000 per annum, based on experience and qualifications.