8550 District Attorney's Investigator

Investigator, Crime Strategies Unit

Recruitment #PEX-8550-099647


8550 District Attorney's Investigator

Investigator, Crime Strategies Unit


Appointment Type: This is an exempt appointment. Pursuant to the City & County of San Francisco Charter, Section 10.104.13, any person occupying a position under exempt appointment shall not be subject to civil service selection, appointment and removal procedures. Exempt employees shall serve at the discretion of the appointing officer.


Department Background

The mission of the San Francisco District Attorney’s Office is to investigate, charge, and prosecute all criminal violations of law occurring within San Francisco County, on behalf of the people of the State of California, and to provide support services to victims of crime.


Within the Criminal Division, the Crime Strategies Unit (CSU) is a multidisciplinary team of neighborhood prosecutors, analysts and investigators designed to conceive, develop, and implement innovative strategies and programs that improve public safety through the efficient prevention, investigation, and prosecution of crime.


Position Description

As a member of CSU, this District Attorney Investigator will assist prosecutors in preparing and organizing cases for court, including locating and interacting with parties pertinent to cases and organizing evidence for presentation at trial. Additionally, Investigators assist various local, state and federal law enforcement agencies to ensure thorough investigations are conducted. Essential duties include but are not limited to:

  • Participates in a variety of criminal investigations; interview witnesses and other individuals knowledgeable about cases; analyzes records and accounts; collects, compiles and provides for preservation and analyses of information.
  • Perform data extraction and imaging from mobile digital devices and other types of digital devices using industry standard extraction tools and methodologies.
  • Perform analysis of mobile digital device data, including call detail records.
  • Prepare clear and concise reports that demonstrate analytical procedures follow scientific methodology and can be reproduced.
  • Prepare and present clearly written technical reports, memos, and presentations documenting investigative findings.
  • Provide expert testimony in court articulating advanced concepts pertaining to digital multimedia evidence and analysis.
  • Support acquisition and maintenance of digital evidence software and equipment.
  • Provide investigative support to prosecutors.
  • Perform other related duties, as assigned.

Knowledge, Experience and Skills Preferred

  • Certification in a digital forensics discipline through an international association (e.g., LEVA, IAI, IACIS).
  • Knowledge of best practices and guidelines for processing digital evidence, such as mobile device operating file systems, call detail records, and geo-location data.
  • Knowledge of geo-spatial analysis applications such as ArcGIS or Google Earth, and ability to perform complex spatial analysis and produce clear informative maps representing results.
  • Knowledge of digital encryption and decryption techniques.
  • Advanced knowledge of Word, Excel, and PowerPoint.
  • Experience with digital evidence technology and processing tools and software, including Cellebrite, Visio, Photoshop, CellHawk and PenLink.
  • Experience using law enforcement investigative databases and resources.
  • Communicate effectively verbally and in writing.
  • Perform analysis, interpret data and develop conclusions.
  • Interpret and apply Federal, State and local policies, laws and regulations.
  • Establish and maintain effective working relationships in a collaborative environment.

Minimum Qualifications

1) Requires a combination of education at the collegiate level in criminology, penology, police science or a closely related field and responsible criminal investigative experience totaling six years; AND

2) Possession of a valid California Class C driver’s license.

Highly Desirable Qualification:

Certification in a digital forensics discipline through an international association (e.g., LEVA, IAI, IACIS).

*The desirable qualification will be considered in addition to the requirement to meet the minimum qualifications.


Security clearance is required as a condition of employment. Candidates for employment with the District Attorney's Office are required to undergo a background investigation to determine suitability for employment in the classification and department. Failure to maintain security clearance may be the basis for termination from employment with the District Attorney's Office.


How To Apply

Applications for City and County of San Francisco jobs are being accepted through an online process. Visit www.jobaps.com/sf to register an account (if you have not already done so) and begin the application process:


  • Select the desired job announcement
  • Select “Apply” and read and acknowledge the information
  • Select either “I am a New User” if you have not previously registered, or “I have Registered Previously”
  • Follow instructions on the screen

Computers are available for the public (from 8:00 a.m. to 5:00 p.m. Monday through Friday) to file online applications in the lobby of the Department of Human Resources at 1 South Van Ness Avenue, 4th Floor, San Francisco.


You can also watch this video for further assistance with our online application system:



Applicants may be contacted by email about this announcement and, therefore, it is their responsibility to ensure that their registered email address is accurate and kept up-to-date. Also, applicants must ensure that email from CCSF is not blocked on their computer by a spam filter. To prevent blocking, applicants should set up their email to accept CCSF mail from the following addresses (@sfgov.org, @sfdpw.org, @sfport.com, @flysfo.com, @sfwater.org, @sfdph.org, @asianart.org, @sfmta.com).


Applicants will receive a confirmation email that their online application has been received in response to every announcement for which they file. Applicants should retain this confirmation email for their records. Failure to receive this email means that the online application was not submitted or received.


All work experience, education, training and other information substantiating how you meet the minimum qualifications must be included on your application by the filing deadline. Information submitted after the filing deadline will not be considered in determining whether you meet the minimum qualifications.


Applications completed improperly may be cause for ineligibility, disqualification or may lead to lower scores. A resume does not substitute for the employment record section of the application. This section must be completed.


If you have any questions regarding this recruitment or application process, please contact the recruitment analyst, Richard Ng, by email at richard.ng@sfgov.org



All applicants may be required to submit verification of qualifying education and experience at any point in the application, recruitment and /or departmental process. If education verification is required, information on how to verify education requirements, including verifying foreign education credits or degree equivalency, can be found at http://sfdhr.org/index.aspx?page=456


Note: Falsifying one’s education, training, or work experience or attempted deception on the application may result in disqualification for this and future job opportunities with the City and County of San Francisco. For additional information regarding verification, refer to this web URL: http://www.sfdhr.org/index.aspx?page=20#verification

Selection Procedures

The selection process will include evaluation of applications in relation to minimum requirements. Applicants meeting the minimum qualifications are not guaranteed advancement to the interview. Depending on the number of applicants, the Department may establish and implement additional screening mechanisms to comparatively evaluate the qualifications of candidates. If this becomes necessary, only those applicants whose qualifications most closely meet the needs of the Department will be invited for an interview.


1. Applicants with disabilities who meet the minimum eligibility requirements for this job announcement can find information on requesting a reasonable ADA Accommodation at web URL: http://sfdhr.org/information-about-hiring-process#applicantswithdisabilities


2. Applicants are advised to keep copies of all documents submitted. Submitted documents become a permanent part of the exam record and will not be returned. The hiring department may require applicants to present additional material at the time of appointment and/or at a later date.


3. For general information concerning City and County of San Francisco employment policies and procedures, please refer to this web URL: http://sfdhr.org/information-about-hiring-process


4. For Right to Work policy, please refer to this web URL: http://sfdhr.org/information-about-hiring-process#identification


5. Terms of Announcement: Applicants must be guided solely by the provisions of this announcement, including requirements, time periods and other particulars, except when superseded by federal, state or local laws, rules or regulations. Clerical errors may be corrected by the posting the correction on the Department of Human Resources website at www.jobaps.com/sf.


ISSUED: 09/11/2019





DAT/RN 415-553-1020

Conviction History

As a selected candidate for a job, you will be fingerprinted, and your fingerprints will be sent to the California Department of Justice (DOJ) and the Federal Bureau of Investigation (FBI). The resulting report of your conviction history (if any) will be used to determine whether the nature of your conviction (or arrest, in limited circumstances) conflicts with the specific duties and responsibilities of the job for which you are a selected candidate. If a conflict exists, you will be asked to present any evidence of rehabilitation that may mitigate the conflict, except when federal or state regulations bar employment in specific circumstances, such as:

  • Candidates for positions with the Unified School District and the Community College District may be disqualified from consideration should their conviction history not meet the standards established under the California Education Code.
  • Candidates for positions with the Recreation and Park Department may be disqualified from consideration should their conviction history not meet the standards established under California Public Resources Code 5164.

Having a conviction history does not automatically preclude you from a job with the City.

If you are a selected candidate, the hiring department will contact you to schedule a fingerprinting appointment.

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