Career & application guide

Forensic Science Technicians

Get to know the work, the skills that matter, and how to prepare your next application.

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What do forensic science technicians do?

Collect, identify, classify, and analyze physical evidence related to criminal investigations. Perform tests on weapons or substances, such as fiber, hair, and tissue to determine significance to investigation. May testify as expert witnesses on evidence or crime laboratory techniques. May serve as specialists in area of expertise, such as ballistics, fingerprinting, handwriting, or biochemistry.

This describes a U.S. occupation, not a live vacancy. Individual employers may use different titles and requirements.

Job titles to recognize in your search

O*NET reports these titles for this occupation. Compare the responsibilities in each posting before treating titles as equivalent.

  • Crime Lab Analyst (Crime Laboratory Analyst)
  • Crime Scene Analyst (CSA)
  • Crime Scene Technician (Crime Scene Tech)
  • Criminalist
  • CSI (Crime Scene Investigator)
  • Evidence Technician (Evidence Tech)
  • Forensic Science Examiner
  • Forensic Scientist

Core tasks to compare with a job posting

  • Collect evidence from crime scenes, storing it in conditions that preserve its integrity.
  • Keep records and prepare reports detailing findings, investigative methods, and laboratory techniques.
  • Use photographic or video equipment to document evidence or crime scenes.
  • Testify in court about investigative or analytical methods or findings.
  • Use chemicals or other substances to examine latent fingerprint evidence and compare developed prints to those of known persons in databases.
  • Measure and sketch crime scenes to document evidence.
  • Visit morgues, examine scenes of crimes, or contact other sources to obtain evidence or information to be used in investigations.
  • Train new technicians or other personnel on forensic science techniques.
  • Operate and maintain laboratory equipment and apparatus.
  • Collect impressions of dust from surfaces to obtain and identify fingerprints.

Prepare an application for this occupation

  1. Check the employer’s requirements, location, schedule and any licenses against your situation.
  2. Choose two or three tasks above that match the posting and your actual experience.
  3. Build a resume evidence worksheet using the skills and software relevant to that employer.
  4. Practice explaining your contribution, decisions and results before an interview.

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