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Senior Transportation Engineer - PT

Job Details

Orange, CA
Part Time
4 Year Degree
Transportation - KOA


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?  If you are passionate about managing and mentoring early career engineers, and are interested in Part Time ( 20-30 hours a week)  then please reach out or apply directly.  



  • Application of diversified knowledge of transportation engineering and design principles

  • Provide roadway and intersection design guidance with responsibility for all aspects of project and client management, project development, and mentoring and guiding support level staff.

  • Orchestrate project teams of various sizes and skills and manage staff and subconsultants.

  • Be responsible for quality assurance and quality control through the development and review of construction plans, specifications, and cost estimates.

  • Interface with clients and create new business opportunities for the office.

  • Represent clients and the firm at project meetings, community events, and/or public hearings.

  • Check construction plans, design calculations, or cost estimates to ensure completeness, accuracy, or conformity to engineering standards or practices.

  • Analyze complex problems. develop and evaluate options and create solutions.

  • Prepare proposals and participate in proposal interviews.

  • Participate in business development activities with clients.




  • Bachelor’s degree in civil engineering and a strong knowledge of civil/traffic engineering concepts
  • Registration as a PE with California Civil Engineer license
  • 8+ years of experience managing projects and staff.
  • Strong written and verbal communication skills
  • Proficiency in CADD applications such as AutoCAD, Civil 3D, and Bluebeam Software
  • Working knowledge of relevant design standards and guidelines such as Caltrans Standard Plans & Specifications, APWA Greenbook, Caltrans Highway Design Manual, California MUTCD, and become familiar with City Municipal Design standards.


The salary range for this position is between $135,000 and $165,000 per annum, based on experience and qualifications.


oining Lochner means gaining access to a comprehensive suite of benefits designed to support your health and financial well-being throughout your career.


Lochner provides an extensive total rewards package that includes:

  • Competitive Premiums for Medical, Dental, and Vision

  • Paid Time Off and Flexible Holiday Program

  • Company Paid Disability (includes paid Maternity Leave), and Life Insurance

  • Health Savings Accounts (HSA) with Employer Contribution

  • Flexible Spending Accounts (FSA) for Medical Expenses and/or Dependent Care

  • Paid Family Leave

  • Retirement Plan with Employer Match 

  • Flexible Work Schedules (Hybrid or Remote, when possible)

  • Wellness Program for Physical and Mental Health

  • Lochner Cares Non-Profit 501c3

  • Education and Training Assistance

  • Employee Assistance Program

  • Employee Discounts

  • Paid Time Off for Charitable Acts of Service

What we offer – Learn more



Work Environment

The work environment characteristics described are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. While performing the duties of this job, the employee is regularly exposed to moving mechanical parts and outside weather conditions. The noise level in the work environment is usually loud. 


Physical Requirements

The physical requirements must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. Intermittent sitting, walking, standing, bending, squatting, climbing, kneeling, twisting, stoop, crawl, and lifting. The employee must frequently lift and/or move light equipment up to 20 pounds. Must be alert to equipment in the field, occasional need to work near hazardous equipment and machinery, occasional need to walk on uneven ground, exposure to dust, gas or fumes, exposure to noise, extremes in temperature or humidity, and potential work at heights. 


Equal Employer

Lochner is proudly committed to recruiting and retaining a diverse and inclusive workforce.  Lochner provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.


All positions at Lochner require an applicant who has accepted an employment offer to undergo pre-employment screening. Background checks include SSN/SIN validation, motor vehicle verification, education verification, employment verification, a criminal check, search against global sanctions and government watch lists, and drug test. All employment offers are contingent upon successful results of the pre-employment screening.


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