Senior Engineering Aide (#RE0101)
$26.64-$32.38 Hourly / $4,616.87-$5,611.83 Monthly / $55,402.48-$67,342.06 Yearly


Under general supervision, performs varied responsible field and office engineering duties; and does related or other work as required in accordance with Rule 3, Section 3 of the Civil Service Rules.


An employee in this class is responsible for assisting technical and professional staff in a variety of engineering assignments by performing the less difficult technical aspects of the work.


  • Prepares drawings from field notes; reduces field notes; plots and checks center lines and cross sections; uses calculator to determine engineering measurements; makes routine engineering and survey computation; tabulates field data; maintains records and prepares reports; may utilize Computer Aided Drafting (C.A.D.) and other computerized activities.
  • Performs rod and chain functions on survey crews; cuts and clears brush and uses manual and electronic equipment to locate survey monuments; drives stakes and pins; keeps and checks survey party field notes; may use theodolite, electronic distance measuring equipment, and level; may act as lead worker in a small survey party.
  • Assists in the checking of private land surveys; may draw topographic and other maps; checks and revises existing maps showing boundaries and districts; searches titles and documents and assists in the preparation of legal deeds and property descriptions.
  • May assist in the issuance of permits; gives information in person and by telephone regarding permit applications and ordinance requirements.
  • Inspects road, bridge and other construction work in the field under supervision; checks grading for proper slopes; checks concrete and aggregate for compliance with specifications; participates in maintaining records of labor and equipment used on construction projects; prepares and submits reports of project progress for review.
  • Takes soil, aggregate, and concrete test samples for laboratory analysis; conducts routine soil and materials tests; checks for compliance with specifications.
  • Sets traffic counters and conducts manual traffic counts; compiles traffic data; repairs and maintains equipment used in traffic engineering division; assists in drafting and drawing maps; prepares charts, graphs, and diagrams related to engineering studies.
  • May direct the work of and train less experienced engineering personnel.


Experience: Two years of varied technical engineering experience at a level comparable to an Engineering Aide in San Joaquin County service.

Substitution: College coursework in engineering science may be substituted for the required experience on a year-for-year basis. 

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


The principles, practices, techniques and instruments used in engineering drafting; techniques and practices of field surveying; mathematics through trigonometry; general road and bridge construction principles and practices.


Read and interpret specifications, maps and technical drawings; perform precise survey work of skilled drafting work; make field and office engineering computations using engineering instruments and aids; learn to use specialized measuring and testing equipment for the materials testing laboratory or in assisting in the traffic or hydraulic engineering division; prepare charts, graphs and diagrams related to engineering studies; understand and follow oral and written instructions; maintain records and prepare reports; establish and maintain effective working relationships with others.


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: RE0101; EST: 12/12/1990;