Engineering Testing Aid I

We welcome applications from anyone.

NO WITHHOLD WILL BE ALLOWED. REQUIRED EXPERIENCE/EDUCATION MUST BE FULLY MET AT THE TIME OF FILING AND CLEARLY INDICATED ON THE APPLICATION.

With almost 10 million residents Los Angeles County is the population county in the nation! As the largest employer in Southern California with over 100000 employees in 39 departments and over 2100 different job descriptions Los Angeles County offers a lifetime of opportunities and careers. We are Los Angeles County Public Works the largest municipal public works agency in the nation. With more than 4000 employees Public Works offers over 500 different types of career opportunities that promote professional and personal growth as well as a rewarding and exciting work environment!

For more information about the outstanding benefits offered by Los Angeles County please visit us here: you have questions about working for Los Angeles County including current open recruitments tips on crafting a resume or acing an interview career planning or any other general information please visit our website at: Job Functions

• Fills with a shovel lifts onto a pickup truck and transports bags of soil weighing approximately 90 pounds to the materials lab for analysis.
• Lifts asphalt cores and core barrels weighing approximately 40 pounds for asphalt pavement laboratory testing and conducts field samplings of soils for California Bearing Ratio tests.
• Lifts and shifts the position of 40-pound loaded sieves in the prep room.
• Digs holes 8 inches in diameter and 4 feet deep in firm dense soil using a manual posthole digger.
• Prepares samples for testing including identifying dating separating and logging information on samples.
• Tests soil samples for compaction consolidation moisture content shear strength specific gravity and bearing value.
• Tests sand and rock samples for grading abrasion resistance specific gravity sand equivalency and plastic limits.
• Tests paving liquid and emulsified asphalt samples for flash point viscosity heat loss sieve retention penetration stripping softening point and residue by evaporation.
• Tests asphalt and concrete for specific gravity setting time oil content screen analysis etc.
• Performs the simpler phases of a wide variety of specialized materials tests.
• Acts as a helper in a field crew operating test boring equipment.
• Records and makes computations on test data and prepares report forms and graphs.
• Operates testing machines and equipment in making physical tests.
• Performs clean-up and minor maintenance work keeping the laboratory and testing equipment in clean and workable condition.
• Performs other field sampling and testing work as required.

Once we have identified that you meet our requirements an invitation regarding the following assessment process will be sent:

EXAMINATION CONTENT:

This examination consists of a Multiple-Choice and/or Simulation Assessment weighted 100% measuring:

• Achievement
• Professional Potential
• Responsibility
• Teamwork
• Reading Comprehension
• Numerical Calculation

Applicants must receive a passing score of 70% or higher on the assessment to be added to the eligible register.

• Various information can be found on our website at The section dedicated to test preparation is Employment Test Assistance.
• Online practice tests are available at can also visit our Los Angeles County Online Assessment Preparation Series webpage at for information about common online assessment types sample questions and test-taking tips.
  
  ELIGIBILITY AND VACANCY INFORMATION:
  Applicants who passed the assessment are placed on a list in the order of their score group for a period of twelve (12) months. Applications will be processed as they are received and added to the list accordingly. We will use this list to fill vacancies in Public Works as they occur.
  
  APPLICATION AND FILING INFORMATION:
  We only accept applications filed online.Applications submitted by U.S. mail fax or in person are not accepted. Apply online by clicking on the Apply green button at the top right of this posting. This website can also be used to get application status updates.
  
  Please fill out the application completely. Provide relevant job experience including employers name and address job title beginning and ending dates number of hours worked per week and description of work performed.
  
  We may verify information included in the application at any point during the examination and hiring process including after an appointment has been made. Falsification of information could result in refusal of application or rescission of appointment. Copying verbiage from the Requirements or class specification as your work experience will not be sufficient to demonstrate meeting the requirements. Doing so may result in an incomplete application and may lead to disqualification.
  
  We will send notifications to the email address provided on the application so it is important that you provide a valid email address. If you choose to unsubscribe or opt out from receiving our emails it is possible to view notices by logging into and checking the profile inbox. It is every applicants responsibility to take steps to view correspondence and we will not consider claims of missing notices to be a valid reason for re-scheduling an exam part. Register the below domains as approved senders to prevent email notifications from being filtered as spam/junk mail.
  
  
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  New email addresses need to be verified. This only needs to be done once per email address and can be done at any time by logging in to and following the prompts. This is to enhance the security of the online application and to prevent incorrectly entered email addresses.
  
  SOCIAL SECURITY NUMBER: Federal law requires that all employed persons have a Social Security Number so include yours when applying.
  
  COMPUTER AND INTERNET ACCESS AT PUBLIC LIBRARIES: For candidates who may not have regular access to a computer or the internet applications can be completed on computers at public libraries throughout Los Angeles County.
  
  NO SHARING USER ID EMAIL AND PASSWORD: All applicants must file their application using their own user ID and password. Using a family member or friends user ID and password may erase a candidates original application record.
  
  ANTI-RACISM DIVERSITY AND INCLUSION (ARDI): The County of Los Angeles recognizes and affirms that all people are created equal and are entitled to all rights afforded by the Constitution of the United States. We are committed to promoting Anti-racism Diversity and Inclusion efforts to address the inequalities and disparities amongst race. We support the ARDI Strategic Plan and its goals by improving equality diversity and inclusion in recruitment selection and employment practices.
  
  CONTACT INFORMATION
  Department Contact Name: Mayra Fuentes
  Department Contact Phone:
  Department Contact Email:
  ADA Coordinator Phone:
  Teletype Phone:
  California Relay Services:
  
  

COUNTY OF LOS ANGELES

Employment Information

Any language contained in the job posting supersedes any language contained below.

This document is intended to provide general information about the recruitment process of the County of Los Angeles. Applicants with questions about a specific job posting should contact the exam analyst listed on the posting.

Equal Employment Opportunity/Non-Discrimination Statement:
The County of Los Angeles is an Equal Employment Opportunity Employer and is committed to non-discrimination in the County workforce regardless of age (40 and over); ancestry; color; ethnicity; religious creed; protected family or medical leave status; disability; marital status; medical condition; genetic information; military and veteran status; national origin; race ; sex; gender; sexual orientation; or any other characteristic protected by State or federal law. For more information please visit: Accommodations for Applicants:
The County of Los Angeles complies with all federal and state disability laws and makes reasonable accommodations for qualified applicants and employees with disabilities. If a reasonable accommodation is needed to participate in the job application process please contact the testing accommodation coordinator listed on the job posting. Hearing impaired applicants with telephone teletype equipment may leave messages by calling the teletype phone number on the job posting. For more information on accommodations please visit: Chance:
The County of Los Angeles is a Fair Chance employer. Except as otherwise permissible under applicable laws you will not be asked to provide information about conviction history unless you receive a conditional offer of employment. The County will make an individualized assessment of whether your conviction history has a direct and adverse relationship with the specific duties of the job and will also consider potential mitigating factors which may include but is not limited to evidence and extent of rehabilitation recency of the offense(s) and age at the time of the offense(s). If asked to provide information about conviction history any convictions or court records which are exempted by a valid court order do not have to be disclosed. Qualified applicants with arrest or conviction records will be considered for employment in accordance with County Fair Chance Policies and the Fair Chance Act (Gov. Code Section 12952).

Employment Eligibility:
Final appointment is contingent upon verification of U.S. citizenship or the right to work in the United States.

Career PathFinder:
Resources to help current and prospective employees plan a career with Los Angeles County are available. To explore career paths to and from nearly all job titles please visit our interactive Career PathFinder application at .

Veterans Credit:
Pursuant to the County Charter and County policy in all open competitive examinations (i.e. examinations open to everyone) the County of Los Angeles will add a credit of 10 percent of the total credits specified for such examination to the final passing score of an honorably discharged veteran as well as the spouse of a deceased or disabled veteran who served in the Armed Forces of the United States under specific conditions.
For more information on veterans credit please visit: September 2025