Engineering Assistant III (#RE0113)
$39.35-$47.83 Hourly / $6,820.96-$8,290.93 Monthly / $81,851.62-$99,491.16 Yearly


Under general direction, performs difficult field and office engineering work in connection with the design, construction and management of Public Works projects; supervises engineering aides, engineering assistants and other staff, depending on area of assignment; and does related or other work as required in accordance with Rule 3, Section 3 of the Civil Service Rules.


This is the advanced level in the Engineering Assistant series. Incumbents at this level act as a specialist, independently performing major complex engineering projects and/or a variety of smaller projects; or act as supervisor of an engineering section.


  • Plans and assigns work, reviews engineering projects completed or in progress; trains, supervises, and evaluates staff.
  • Prepares and/or directs the preparation of plans, estimates, maps, property descriptions, detailed drawings and specifications; makes preliminary designs and estimates for determining budgetary needs for construction and design projects.
  • Makes engineering analyses and prepares reports and estimates in connection with engineering and budgetary aspects of assigned project.
  • Reviews and supervises checking of construction plans and subdivision maps and plans; inspects or initiates inspection of projects during construction and upon completion to determine conformance with standards and specifications.
  • Meets with other departments, agencies or the general public regarding plans, problems and joint projects.
  • Assists in the preparation of division budget.



Experience: Two years as an Engineering Assistant II in San Joaquin County Service.



Education:  Completion of 60 semester units from an accredited college or university with major coursework in engineering science, construction management, or a related field.  

Experience: Six years performing field and office engineering work with at least two years experience comparable to an Engineering Assistant II in San Joaquin County.


Substitution #1: Additional varied field and office engineering experience may be substituted for the required education on a year-for-year basis.


Substitution #2:  Additional education may be substituted for the required experience on a year-for year basis, to a maximum of two years.  


License:  Possession of a valid California driver’s license.


The advanced principles and practices of engineering; methods and materials used in planning, design, construction and maintenance of varied projects including road, bridge, transportation, water, waste water, drainage, solid and hazardous waste disposal; principles of supervision, program planning and budgeting; principles of supervision; basic computer and modern office automation technology, including pertinent software.


Independently apply required knowledge in varied work assignments; resolve technical problems of considerable difficulty; assign, train, supervise and evaluate engineering personnel and their work; learn a variety of computer applications and apply to assigned projects; operate computers and related software; establish and maintain effective working relations with other employees and the public; communicate effectively, both orally and in writing; prepare long-range programs and budgets.


Mobility-Frequent operation of a data entry device, sitting for extended periods, standing for long periods, walking, pushing/pulling, bending, squatting, driving, climbing stairs or other objects; occasional crawling; Lifting-Frequently 5-30 pounds or less; occasionally 30–70 pounds; occasionally restraining, lifting and/or turning heavy objects; Vision-Good overall vision, color perception, depth perception; frequent reading and close-up work; normal hand and eye coordination; good field of vision/peripheral; Dexterity-Normal dexterity with frequent writing and repetitive motion; Hearing/Talking-Frequent hearing and talking on the telephone and in person; frequent exposure to construction and traffic noise; Special Requirements-May require occasional overtime, weekend or evening work; Emotional/Psychological-Frequent public contact and decision making; frequent concentration required; Environmental-May be exposed to dust, fumes, and varied weather conditions. 

San Joaquin County complies with the Americans with Disabilities Act (ADA) and, upon request, will consider reasonable accommodations to enable individuals with disabilities to perform essential job functions.

CLASS: RE0113; EST: 12/12/1990; REV: 9/14/2005;