Fire Investigator (Part-Time/PRN)

About the role

Keystone Experts & Engineers specializes in forensic engineering and investigative services for commercial and residential structures, vehicles, and products. Our multi-disciplinary team delivers streamlined, fact-based forensic consulting with clarity, accuracy, and timeliness. Reports are tailored to client specifications and backed by expert analysis, ensuring clear, defensible conclusions and industry-leading turnaround times.

The Keystone Way reflects our commitment to excellence, innovation, integrity, honesty, accuracy, timeliness, and accountability—values that guide every project. We combine top-tier expertise, open communication, and dependable service to deliver results clients can trust.

Responsibilities

• Conduct methodical scene examinations by excavating and reconstructing the area to identify a fire’s point of origin and ignition source.
• Collect, preserve, and document all physical evidence, maintaining a strict chain of custody for items sent for laboratory analysis.
• Interview firefighters, property owners, and witnesses to gather information and establish a timeline of the incident.
• Prepare detailed investigative reports that outline the methodology, findings, and professional conclusions on the fire’s cause.
• Provide expert testimony in legal proceedings, presenting objective findings to be used in criminal or civil court cases.
• Analyze the application of fire codes, building construction, and systems performance in relation to the incident.
• Coordinate investigative efforts with law enforcement, insurance companies, and other agencies to ensure a thorough and collaborative process.
• Maintain current knowledge of fire science, investigative techniques, and technology to ensure proficiency.

Requirements

• Possess the requisite knowledge and education required by NFPA 1033.
• Hold a current NAFI-CFEI Certification.
• Able to obtain the IAAI-CFI Certification within one year of employment.

Pay

$50–$60 USD per hour (St. Louis, MO).