Engineering Assistant II (#RE0112)
$35.17-$42.75 Hourly / $6,095.54-$7,409.17 Monthly / $73,146.54-$88,910.08 Yearly


Under direction, performs field and office engineering work of moderate difficulty in connection with the design, construction and management of Public Works projects; and does related or other work as required in accordance with Rule 3, Section 3 of the Civil Service Rules.


This is the journey level class in Engineering Assistant series. Incumbents at this level are responsible for moderately difficult and responsible engineering work in a variety of areas, which include, but are not limited to transportation, drainage, water resources and supply, wastewater, and solid and hazardous waste management. Assignments may involve supervision of subordinate engineering employees.


  • Provides technical direction and performs computing and checking of field operations as related to the layout and construction of roads; sanitation, drainage and water systems; subdivisions; bridges; traffic signals; street lighting systems; and solid and hazardous waste facilities.
  • Designs Public Works projects by preparing plans, profiles, and cross sections; makes quantity estimates, horizontal and vertical alignments and curve computations; and establishes highway and hydraulic gradients.
  • Prepares and reviews maps, right-of-way deeds and legal descriptions.
  • Acts as resident engineer for major projects under contract such as sanitation, drainage and water systems; roads, buildings, and other facilities.
  • Writes engineering specifications for proposed projects; makes estimates for projects planned or under construction; prepares engineering reports; applies principles of engineering design to assigned projects.
  • May serve as a lead worker or supervise a field crew; may monitor field activities and work production; may instruct subordinate staff to make corrections or modifications to ensure compliance with standards and regulations.


Experience: Two years as an Engineering Assistant I 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: Four years performing field and office engineering work with at least two years experience comparable to an Engineering Assistant I 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 principles and practices of engineering; methods and materials used in planning, design, construction and management of engineering projects including roadway and structural design and inspection, waste disposal and storage, traffic engineering, hydraulics and flood control; principles and practices of supervision; basic computer and modern office automation technology, including pertinent software; principles of supervision.


Apply required engineering knowledge in varied work assignments; assign, train, supervise and evaluate subordinate engineering personnel and their work; learn to perform a wide variety of computer applications in engineering 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.


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: RE0112; EST: 6/12/1990; REV: 9/14/2005;