Criminal Investigator job description.
A criminal investigator gathers evidence and conducts inquiries into alleged criminal activity for a law enforcement or government agency. They interview witnesses and suspects, analyze evidence, prepare case files, and coordinate with prosecutors to support the resolution of investigations.
The Criminal Investigator job description · $29
The full editable .docx — role summary, 8 worked responsibilities, qualifications, and skills, formatted for your letterhead. Delivered to your inbox within 24 hours — usually instantly.
Role: Criminal Investigator Reports to: Investigations Supervisor or Chief of Detectives
A criminal investigator gathers evidence and conducts inquiries into alleged criminal activity for a law enforcement or government agency. They interview witnesses and suspects, analyze evidence, prepare case files, and coordinate with prosecutors to support the resolution of investigations.
- Investigate reported crimes by gathering evidence and interviewing witnesses
- Conduct interrogations and interviews of suspects and persons of interest
- Collect, document, and preserve physical and digital evidence
What's inside the document.
One-paragraph plain-English explanation of the role's outcome and scope.
8 responsibilities phrased the way the work is actually done.
4 qualifications a candidate must have to perform on day 30.
3 qualifications that would make a candidate excellent in year two.
5 skill chips you can copy directly into your ATS.
Investigations Supervisor or Chief of Detectives
A complete document set.
- Word document (.docx) — fully editable
- PDF — signature-ready
- Google Docs — one-click copy to your Drive
- 12 months of updates to this document
- Commercial-use licence for internal and client work
The work, not the title.
- Investigate reported crimes by gathering evidence and interviewing witnesses
- Conduct interrogations and interviews of suspects and persons of interest
- Collect, document, and preserve physical and digital evidence
- Prepare detailed case reports and investigative summaries
- Coordinate with forensic units, prosecutors, and other agencies
- Testify in court proceedings as required
- Maintain chain-of-custody standards for all evidence
- Stay current on investigative techniques and applicable law
Required — and what would make a candidate excellent.
- Current law enforcement certification/licensure as required by state and employer
- 3+ years of experience in law enforcement or investigations
- Strong interviewing, analytical, and report-writing skills
- Ability to pass background, physical, and psychological screening
- Bachelor's degree in criminal justice or related field
- Specialized training in forensics, cybercrime, or financial crime
- Prior experience as a detective or patrol officer
Eight steps from download to publish.
- 01Open the Criminal Investigator job description in Word or your one-click Google Docs copy.
- 02Replace placeholders for company name, reporting line, and location with your specifics.
- 03Tighten the summary to one paragraph that names the team's outcome, not just the role.
- 04Edit the responsibilities to match the actual scope of the seat — aim for 6 to 8 items, not 12.
- 05Separate required qualifications from preferred. Required is what a candidate must have to do the work on day 30; preferred is what would make them excellent in year two.
- 06Add salary range guidance using BLS, Payscale, or your own band data — do not copy generic figures.
- 07Have the hiring manager and one peer read it. Cut anything that wouldn't survive a candidate question.
- 08Publish to your ATS, intranet, and external careers page.
The right document at the right moment.
Use this Criminal Investigator job description any time you are opening or reopening a seat at this level. The senior band sets the calibration — copy the document, tighten it to your specific scope, and circulate to the hiring panel before the first interview.
The reporting line (Investigations Supervisor or Chief of Detectives) and skills list are starting points. Override either if your org structure or stack differs from the norm — the template is a draft, not a contract.
Honest answers before you download.
- Is prior law enforcement experience required?
- Most criminal investigator roles require several years of prior law enforcement experience, often as a patrol officer, before advancing to investigative work.
- What background checks apply to this role?
- Candidates typically undergo extensive background, credit, and psychological screening given the sensitivity and authority associated with the position.
Other documents in this neighbourhood.
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Private Investigator
A private investigator conducts research and surveillance to gather evidence for clients, attorneys, or businesses.
Police Investigator
A Police Investigator conducts detailed investigations into crimes, gathering evidence, interviewing witnesses and suspects, and building cases for prosecution.
This Criminal Investigator job description is a professionally drafted starting point for your hiring process and is not legal advice. Hiring practice varies by jurisdiction (e.g. pay-transparency laws differ across US states and AU jurisdictions). Adapt this document for your specific location and have employment counsel review any clauses you add before publishing. Salary varies by region, employer type, and experience. Reference BLS or current industry surveys for ranges. Full disclaimer.