Criminalist I, Forensic Biology DNA (8259) – San Francisco Police Department

The San Francisco Police Department was established in 1849 and continues to evolve as an effective, inclusive, and modern police organization. We are focused on maintaining the trust of the people who live, work, and visit San Francisco by reviewing our initiatives, learning from best practices, and adapting to the changing needs of the City. The San Francisco Police Department stands for safety with respect for all. We are committed to just, transparent, unbiased, and responsive policing carried out with dignity and in partnership with the community. We collaborate with community members and City partners to promote safety, fairness, and trust across San Francisco, with an emphasis on strong relationships and support for the well‑being of our neighborhoods. The Department is dedicated to excellence in law enforcement and to the people, traditions, and diversity of San Francisco. Our mission is to keep the public safe by protecting life and property, preventing crime, and reducing the fear of crime.

Application Opening: August 21, 2026
Appointment Type: Permanent Exempt – This position is excluded by the Charter from the competitive Civil Service examination process and shall serve at the discretion of the Appointing Officer. The duration of the appointment shall not exceed 36 months.
Work Location: 1995 Evans Ave, San Francisco, CA 94124

About the Role

Under general supervision, the Criminalist I in Forensic Biology DNA receives on-the-job training in the examination and analysis of biological evidence. The incumbent learns and performs serological and DNA laboratory procedures, including evidence screening, sample preparation, and routine analytical tasks. As proficiency develops, the Criminalist I progresses to more complex examinations and participates in forensic biology casework.

Responsibilities

• Examine evidence from criminal investigations for the presence of biological material.
• Perform chemical, microscopic, and genetic analyses of biological evidence using established laboratory procedures.
• Interpret analytical data and document observations according to laboratory protocols.
• Prepare clear and detailed case notes and written reports of scientific findings.
• Retrieve evidence from SFPD Property Control and/or the Office of the Chief Medical Examiner while maintaining proper chain-of-custody.
• Follow established quality control, quality assurance, and laboratory safety procedures.
• Prepare casework folders and assist in assembling documentation required for technical review by senior staff.
• Enter case information and analytical results into laboratory computer systems and tracking databases.
• Maintain and operate laboratory instruments, including performing routine checks and documenting maintenance consistent with established procedures.
• Participate in required DNA-typing proficiency tests.
• Provide impartial court testimony regarding examinations performed and scientific conclusions reached.
• Conduct visual, microscopic, and chemical examinations of evidence to identify biological material such as blood, semen, saliva, hair, and tissue.
• Perform DNA testing to characterize biological evidence and assist in determining potential contributors.
• Ensure proper handling, processing, and preservation of biological evidence in accordance with established policies and protocols.
• Participate in discussions or informal peer interactions regarding casework, under the direction of senior criminalists, to support adherence to laboratory standards.

Requirements

To be considered, you must possess the following education and experience:

• Possession of a baccalaureate degree from an accredited four-year college or university with major course work in criminalistics, chemistry, biochemistry, molecular biology, or a closely related physical science field.
• Course work must include the subject areas of forensic science, biochemistry, genetics, molecular biology, or other subjects that provide a basic understanding of the foundation of forensic DNA analysis. Course work must include 9 (nine) cumulative semester hours or equivalent that cover the required subject areas.
• Possession of a valid California Driver’s License.

To be considered, you must upload your transcript with completion of these courses.

Qualifications

• Demonstrated interest in forensic science through academic projects, internships, workshops, or participation in professional development activities.
• Familiarity with serological and DNA analysis principles, including biological screening methods, PCR, genetic markers, or DNA profiling.
• Experience preparing scientific notes, laboratory documentation, or technical summaries with attention to accuracy and detail.

Pay

$104,338 - $126,802

Schedule

• Monday - Friday, Full-time.
• Up to one day a week telecommuting work schedule available in line with CCSF policy based on available work/assigned duties.
• Some assignments may require working weekends and/or holidays.

Background Investigation

Prior to employment with the San Francisco Police Department, a thorough background investigation will be conducted to determine the candidate’s suitability for employment. The investigation may include, but not be limited to: criminal history records, driving records, drug/alcohol screening, and other related employment and personal history records. Reasons for rejection may include use of controlled substances and alcohol, felony conviction, repeated or serious violations of the law, inability to work with co-workers, inability to accept supervision, inability to follow rules and regulations, or other relevant factors. Candidates may be required to undergo drug/alcohol screening and must clear Department of Justice and Federal Bureau of Investigation fingerprinting. Criminal records will be carefully reviewed; candidates who do not report their complete criminal records on their applications will be disqualified. Applicants will be fingerprinted.