Criminalist Firearms Examiner I

• →Completes casework on simple to moderate-level firearms evidence under general guidance of experienced examiners and/or the Technical Leader.
• →Documents and protects evidence according to laboratory procedures ensuring that the chain of custody is maintained
• →Prepares reagents/standards used for processing and verifies their performance
• →Maintains Firearms Unit reference collections and orders materials
• →Performs basic instrument maintenance and quality checks
• →Ensures quality of work and maintains compliance with ISO 17025:2017 standards
• →Performs mechanical function examinations of pistols, revolvers, rifles and shotguns and safely test fires firearms
• →Performs 3D topographic scanning (eg. BrassTraxTM) acquisitions of fired cartridge cases for entry into the National Integrated Ballistic Information Network (NIBIN)
• →Evaluates image correlation results (eg. Matchpoint+TM) to identify and disseminate NIBIN leads
• →Performs serial number restorations
• →Examines firearms and related evidence to include fired cartridge cases, fired shot shells, shotshell components, bullets and unfired ammunition
• →Evaluates and microscopically compares fired evidence components from a crime scene to determine which components were fired from the same firearm(s), the number of firearms involved, and/or whether the components were fired from a particular seized firearm
• →Generates well‑documented casework consistent with forensic laboratory standards and accreditation requirements
• →Issues reports regarding analysis of evidence
• →Testifies as an expert witness in municipal, state and federal courts as necessary regarding analysis
• →Performs verifications, technical and administrative reviews of casework 
• →Participates in continuing education relevant to Firearms Examination
• →Successfully complete comprehensive training program (~2 years) prior to authorization as an independent Firearms examiner
• →Performs other duties as assigned
  

The Firearms Examiner I performs analysis of forensic evidence through a variety of methods related to Firearms examinations.

An equivalent combination of education, training, and experience that demonstrates required knowledge, skills, and abilities may be considered.

• Coursework or internship focused on Firearms and Toolmarks-specific applications
• Completed training in NIBIN or Firearms and Toolmarks examination at an accredited laboratory

• Bachelor’s degree in forensic science, a physical or natural science, or directly related field, from an accredited college or university.

• No experience required

• General knowledge of scientific procedures and equipment used in firearms examination
• General knowledge of safe chemical handling practices and firearm safety
• General knowledge of investigative methods and techniques
• General knowledge of rules of evidence and court testimony
• General knowledge of accreditation requirements and forensic testing standards

• Strong analytical, documentation and communication skills
• Basic application of analytical instrumentation and microscopy
• Effective explanation of scientific matters and forensic findings to peers, law enforcement, and the court

• Communicate effectively both orally and in writing
• Establish and maintain effective working relationships
• Use critical thinking and sound reasoning
• Organize and prioritize work
• Work independently of direct supervision

• Must possess a valid Colorado Driver’s License

• When a local announcement of emergency or disaster is declared by the City, all City of Aurora employees may be required to work as essential personnel.

• Medium work that involves moving no more than 50 pounds with or without assistance at a time
• Frequent Hand/eye coordination to operate computer, laboratory instruments and other testing instruments
• Infrequent Foot/eye coordination to operate motor vehicle
• Occasional standing/walking
• Visual acuity correctable to 20/40 with no color impairment to interpret data
• Speech communication, hearing and listening to maintain communications with other employees and citizens

• Works primarily in an office/laboratory environment
• Exposure to biohazard contamination, chemicals, odors and noise

• Uses standard office equipment including personal computer and common office software such as email, internet, word processing, spreadsheets and menu driven databases as a part of the laboratory automated systems
• Fume hood, balances, microscopes, stage micrometers, remote firing devices and bullet recovery equipment, scanner
• This position may require the incumbent to occasionally use personal equipment (e.g. vehicle, cell phone, tools, etc.) in the course of their employment

The city of Aurora will implement furlough days (unpaid days off) for most employees in 2026. The scheduled furlough dates are January 16, April 10, July 2, and December 24.

For Veterans preference:  Please show all of your employment history, including military service and related documentation (DD214) on the application.
           
The City of Aurora is an equal opportunity employer.  We are required by state and federal agencies to keep certain statistical records on applicants.  It will not be used in any way to discriminate against you because of your sex, race, age, sexual orientation, creed, national origin, disability or military status, gender identity, unless related to a bona fide occupational qualification as defined by the Colorado Civil Rights Commission and the Equal Opportunity Commission.
                                         
Despite the changes in Colorado law, the City of Aurora maintains a drug-free workplace.  A positive test of marijuana is grounds for disqualification and ineligibility for employment with the city for one year or termination once hired.
 

Drug Testing, Thorough Criminal Background Check, and Employment References:
As a condition of employment, all applicants selected for employment with the City of Aurora must undergo a thorough criminal background check. 

Applicants selected for safety-sensitive positions are required to complete and pass a drug screening as a condition of employment. Safety sensitive positions include Civil Service positions within Police and Fire Departments and positions where their job responsibilities have direct and substantial responsibility that would impact the health and safety of others.  

Employment references will be conducted on finalists for City of Aurora vacancies.

Notice Regarding Colorado Identification Document Protections (HB26‑1283)
As part of the employment eligibility verification process, the city of Aurora may request government-issued identification documents as permitted by law. Original identification documents will be reviewed only as necessary for employment eligibility verification and will not be retained longer than permitted by law. Applicants will retain possession and control of their original identification documents except for any temporary retention permitted or required by law.