District Attorney Investigator

County of Marin
Full Time, Temporary $124,030 - $150,384 Per year CA 3501 Civic Center Dr Ste 145, San Rafael, CA 94903, United States


At the County of Marin, our employees overwhelmingly report feeling their work is meaningful, they like the work they do, and they are proud to tell people “I work for the County of Marin.” . Read on to find out more about this opportunity:


The Marin County District Attorney's Office is the fiduciary for the Northern California Computer Crimes Task Force (NC3TF), which is headquartered in Napa County.  The NC3TF is currently recruiting for one (1) full-time, benefited, three (3) year fixed-term position as a Criminal Investigator. This is a sworn law enforcement position.

The NC3TF is a technology/cyber-crime and identity theft task force whose law enforcement mission is defined in . The task force is a partnership of government agencies working together to identify, investigate, and prosecute computer crimes, technology-related crimes, and identity theft.  The mission of the task force is two-fold:

  1. to apprehend and prosecute high technology criminals and to protect our communities from high technology crime and threats involving computers and computer networks; and 
  2. to apprehend and prosecute criminals who engage in the unlawful practice of identity theft.
An ancillary function of the NC3TF is to provide timely, professional, and technically advanced digital forensic examinations of electronic devices for the investigation of violent crimes, crimes involving child sexual abuse material (CSAM), felony narcotics, and significant property theft/fraud to city, county, and state law enforcement agencies in its area of operation.

The NC3TF will utilize its specialized resources to investigate cases when:
  1. Computers and technologies are the target of a crime;
  2. Computers and technologies are the principal instrumentality of a crime; or
  3. Computers and technologies are misused to facilitate violations of other criminal laws, and a specialized understanding of technology is required for investigation or prosecution.
The NC3TF field related responsibilities include identifying, collecting, preserving, and maintaining the integrity of digital and multi-media evidence.  The Forensic Investigator must clearly document the description and condition of evidence items and ensure a proper chain of custody is maintained by following the best practices for digital and multi-media evidence.  The Forensic Investigator also must perform other related duties including detentions and arrests as needed.

The Criminal Investigator must be knowledgeable in current laws, codes, and regulations in general as well as those specific to computer crimes. It will be necessary to attend on-going training seminars and certification courses related to computer crimes investigations.


The Highly Qualified Candidate is well organized, detail-oriented, and performs thorough investigations. The candidate is a self-starter, is flexible in responding to changing priorities and assignments, and ensures that work meets set deadlines. The candidate has the ability to work independently and serve as a member of a team, working respectfully and collaboratively while developing positive working relationships with colleagues and staff, as well as representatives from partnering agencies. The candidate possesses clear written and verbal communication skills, a strong work ethic, good self-time management, and excels in a fast paced, progressive environment.

Minimum Qualifications
High school graduation or equivalent (GED) is required and two years as a full time Investigator assigned to an investigative unit in a law enforcement agency that demonstrates possession of the listed knowledge and abilities listed in the class specification.
The following may substitute for up to one year of the required experience:

  • Special training in criminal investigation OR
  • Two years of college education (60 semester or 90 quarter units) in police science, criminal justice, criminology, or a closely related field 
Required Certificates and Licenses: 
  • Must possess a current California Basic P.O.S.T. (Peace Officer Standard and Training) certificate orthe equivalent as determined and certified by P.O.S.T. 
  • Individuals appointed are required to complete a 40-hour investigation and trial preparation module within the first 12 months of employment.
  • This job class requires travel between various County and business-related locations. Employees who drive on County business to carry out job-related duties must possess a valid California driver's license for the class of vehicle driven and meet automobile insurability requirements of the County, including review of a recent DMV history. If a driver's license is required, at the time of the selection interview by the appointing authority, applicants will have to furnish a recent DMV driving record.
If selected to start a background, you will need to provide pre-employment access to your P.O.S.T. profile and your certification must be current and maintained throughout employment.  


All applicants will receive email notifications regarding their status in the recruitment process. Please be sure to check your spam settings to allow our emails to reach you. You may also log into your governmentjobs.com account to view these emails.

Testing and Eligible List: Depending on the number of qualified applications received, the examination may consist of a highly qualified review, application screening, online assessment, written examination, oral examination, performance examination, or any combination to determine which candidates' names will be placed on the eligible list.

First Round Selection Interviews: Week of June 3, 2024
The eligible list established from this recruitment will be used to fill the current vacancy and any future vacancies for open, fixed-term, full-time or part-time positions which may occur while the list remains active.

Special Requirements: The selected candidate must pass a background investigation as required for employment in a law enforcement agency. The successful candidate must successfully complete the training requirements per the California Penal Code (currently PC §13835.10) within the first year of employment.

Candidates must not have been convicted of any crime for which the punishment could have been imprisonment in a federal penitentiary or state prison or any crimes that would prohibit employment in this position under state law. Chosen applicant shall be subject to a thorough background investigation and must pass a medical clearance and psychological evaluation.  

Disaster Service Workers: All County of Marin employees are designated Disaster Service Workers through state and local law (California Government Code Section 3100-3109). Employment with the County requires the affirmation of a loyalty oath to this effect. Employees are required to complete all Disaster Service Worker-related training