Employment Opportunity

Senior Criminalist

Los Angeles County Sheriff, CA

Salary: $86,231.04 - $107,128.33 Annually


Performs a wide range of the more complex physical and chemical analyses required in scientific criminal investigations. Positions allocable to this class typically report to a Supervising Criminalist and independently perform physical and chemical analyses of evidentiary substances encountered in the course of criminal investigations or conduct chemical analyses to determine the nature and quantity of toxic substances in body tissues and fluids of living or deceased persons for forensic or criminalistics purposes not primarily related to patient care. Technical supervision is available on the most complex problems; functional supervision regarding field investigations may be exercised by investigative law enforcement personnel assigned to a particular case. Incumbents in these positions must exercise considerable knowledge of the departmental and laboratory policies and procedures. Incumbents may be required to respond to crime scenes at any time during their assigned shift, as well as during off duty hours, and are required to testify in court regarding their analyses.

Duties and Requirements Click to read more


  • Performs physical and chemical analyses of evidentiary material of specimens such as blood, narcotics, drugs, hairs and fibers, metals, tool marks, and body tissues and fluids; utilizes microscopic techniques, comparison macrophotography, chromatography, spectrography, and physical analytical and comparison techniques.
  • Prepares written findings and displays for court presentation; testifies concerning findings as established by laboratory analyses and interprets findings as a qualified expert witness.
  • Responds to crime scenes and examines, collects, interprets, and preserves physical evidence for analysis and evaluation under the functional supervision of the investigative officer assigned to the case.
  • Conducts research, as assigned, into new methods and procedures of scientific criminal investigation or other special assignments as directed by the supervisor.
  • Contacts other scientific investigatory agencies to coordinate findings or to seek alternative methods of analysis involving specific case studies.
  • Modifies existing testing procedures, following section head approval, to meet special needs of a particular scientific investigation.
  • Assists in training less experienced criminalist personnel in the methods of analysis employed in the laboratory and in the methods of collecting and preserving evidence.


  • Bachelor's Degree from an accredited college or university with specialization in criminalistics, chemistry, biochemistry, or a closely related scientific field, including at least eight semester hours of general chemistry and three semester hours of quantitative analysis
  • Two years' paid, full-time professional experience in a forensic science laboratory, analyzing physical evidence, serological or narcotic specimens, breath alcohol, or toxicological test samples.
  • A Master's Degree from an accredited college or university with specialization in criminalistics, chemistry, biochemistry or a closely related scientific field may be substituted for one year of paid, full-time professional experience in a forensic science laboratory.
  • A valid California Class C Driver License is required to perform job-related essential functions. Appointees may be required to provide automobiles and drive them in County service at the rate of compensation allowed by the Board of Supervisors. Candidates offered these positions would be required to show proof of a driver license prior to appointment.

Do you have the Education Required? See available on-line and campus-based degree programs now!

How to apply: Apply online.

Posted: March 3, 2016

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