Assistant Engineer

City of Ontario | Ontario, CA

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Posted Date 9/17/2019

$7,319.86 - $8,898.93 Monthly

The City of Ontario reserves the right, if necessary, to accept only the first one hundred (100) applications from applicants that meet the qualification guidelines below. Additionally, the following procedures will apply:

  • Separate Promotional and Open (external) Eligibility Lists will be established.
  • The Promotional Eligibility List will be comprised of current City employees (full or part-time) who meet the minimum qualifications and successfully complete any required selection processes.
  • The Open Eligibility List will consist of external applicants who meet the minimum qualifications and successfully complete any required selection processes.
  • The hiring department will consider the Promotional Eligibility List prior to considering candidates on the Open Eligibility List.

The City of Ontario is currently accepting applications for the position of Assistant Engineer. The Assistant Engineer, a common classification used in a variety of City Departments, performs entry-level professional engineering work utilizing Civil Engineering practices and principles as applied to municipal government.  Positions in this classification are assigned a variety of plan review, project management, and under direct supervisor, make recommendations in resolving engineering related issues. Under direction, Assistant Engineers review and oversee design and construction development projects and supervise related public works activities; review plan check improvement plans, supervise projects and work of subordinate technical staff; and may serve as project engineer as needed.

The ideal candidate will enjoy working in a fast-paced, multi-faceted environment; operate with independence and initiative while exhibiting innovative problem solving skills; and demonstrate their commitment to the community by providing excellent customer service through teamwork, communication and responsiveness. Successful candidates will embody the Department's Values as well as the qualities of a "Five Tool Player" – Leader, Thinker, Communicator, Operator and Public Servant – and the values of the City's Approach to Public Service. 

The Assistant Engineer classification is a common classification used in a variety of City departments. This recruitment will result in an eligibility which will be used to fill current and future vacancies within this classification.  Current vacancies exist in the Municipal Utilities Company, Traffic/Transportation and CIP Divisions of the Engineering Department. 

The City of Ontario

The City of Ontario is a dynamic leading community in the Inland Empire with a variety of full-time and part-time employment and volunteer opportunities. Ontario enjoys the reputation of being a progressive City which provides solid leadership to its citizens and to the business community. The City provides a full range of services to the community including; Police, Fire, Administrative Services, Community Services, Development, Economic Development, Housing, and the Ontario Municipal Utilities Company. The City's team is staffed with approximately 1,200 full-time and 200 part-time diverse and talented employees who work to support a common goal of providing excellent service to the community.

We invite you to learn more about the City of Ontario by reviewing the City's website. A few useful links are also listed below:

Approach to Public Service (Core guidelines for City of Ontario employees) (Information about City of Ontario employee benefit plans)

The Ontario Plan (The City's Comprehensive Business Plan for Development)

Examples of Essential Functions:

The essential functions typically performed by the Assistant Engineer include the following:

  • Coordinates, manages and designs land development, traffic, municipal utility, and capital improvement projects.
  • Serves as liaison for the City to private engineers, surveyors, developers, other public agency employees and engineers, and the general public.
  • May provide lead direction to clerical and/or technical staff.
  • Plans, coordinates and oversees the work of consultants; explains procedures, checks work for conformance with standards, and resolves procedural and policy questions; administers professional service contracts.
  • Coordinates with state, county, utility companies, and other agencies for project approval and construction.
  • Serves as project manager on right-of-way engineering preparation and processing.
  • Assists in the preparation and review of engineering plans, specifications and legal documents, correspondences, reports and proposals.
  • Represents the City at a variety of meetings.
  • Administers State and Federal grant funding applications.
  • Assists with project construction management and administration.
  • Utilizes the Accela application for project management and permit issuance.

May perform the following essential function if assigned to CIP:

  • Assists with the development of design plans, specifications, and estimates for the construction of master planned storm drain projects and pavement rehabilitation/street improvement projects. 

May perform the following essential function if assigned to Traffic/Transportation Division:

  • Assists with the operation and maintenance of City traffic signal systems.
  • Assists with the designs of traffic signals, street light, and signing and striping installation for the City. 
  • Assists in responding to traffic related public request. 
  • Conducts a variety of traffic related studies and prepares reports.
  • Issues traffic and transportation related permits.
  • Maintains a variety of traffic related data.
  • Reviews a variety of invoices for accuracy and issue payment authorization.

May perform the following essential functions if assigned to the Municipal Utilities Company:

  • Assists in developing needs assessments for the upgrade, repair, and replacement of water and sewer infrastructure projects and facilities, including developing recommendations for Capital Improvement Programs, budgets, and schedules.
  • Assists with supervising the development of design plans, specifications, and estimates for the construction of water, sewer, and recycled water projects in compliance with appropriate laws, ordinances, and guidelines.
  • Inspects project sites as needed to resolve less complex issues and assist in the solution of difficult problems; interprets specifications and City policy; reviews and recommends change orders as appropriate.
  • Prepares and reviews hydraulic modeling and water quality analysis of the water and wastewater systems.
  • Provides technical support to utility operations and maintenance activities.

Qualification Guidelines:


Bachelor's degree from an accredited college or university with major course work in civil engineering, mechanical engineering, or closely related field.


Valid Class 'C' California driver's license and acceptable driving records at time of appointment and throughout employment.


Possession of an Engineer-in-Training Certificate issued by the State of California. A copy of your certification must be submitted with your application.

Related experience in municipal engineering and knowledge of AutoCAD, and ArcGIS. When assigned to the Traffic/Transportation Division; Principles and practices of Traffic Engineering, operations, traffic laws and regulations, and transportation planning.

The Assistant Engineer classification is a common classification used in a variety of City departments. This recruitment will result in an eligibility which will be used to fill current and future vacancies within this classification. Current vacancies exist in the Municipal Utilities Company, Traffic/Transportation and CIP divisions of the Engineering Department. 

How to Apply

Apply online by clicking on the "Apply" link at the top of this announcement. If this is the first time applying for a position using you will be prompted to create a new user account, otherwise log in with your user name and password. Your application and responses to any supplemental questions will be used to evaluate your qualifications for this position. It is suggested that your application include the following:

A resume may be attached to your application but will not substitute for the proper completion of your application. Applications that are not properly completed may be rejected. 

Supplemental Questions

To complete your application for this position you will be prompted to respond to supplemental questions. This information will be used as part of the application screening and selection process and is designed to help you present your qualifications for this position. This may include a selection step in which your application and supplemental questions are reviewed and scored by a panel of raters familiar with this position.

Incomplete responses, false statements, omission, or partial information may result in disqualification from the selection process. Your responses should be consistent with the information provided on your application.

Please provide succinct, concise, descriptive, and detailed information for each question. If you have no experience, write "no experience" for the appropriate question.

Email Notices

Email is the primary way that the Human Resources or Hiring Department will communicate with you. Please check your email account (including the SPAM folder) on a regular basis for any emails related to the application or selection process. Emails from the city of Ontario will come from "" or "" If you change your email address after submitting your application please visit and update your profile.

  • List any relevant experience and education that demonstrates that you qualify for the position.
  • List all periods of employment for at least the past 10 years, beginning with your most recent or present employer (including, if applicable, all employment with the City of Ontario).
  • Separately list each position held, including different positions with the same employer.

Frequently Asked Questions

If you have any additional questions regarding the application process, please refer to our Frequently Asked Questions page.

Job Category
Local Government
Career Level
Mid Level

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