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Criminal Investigation currently employs a robust workforce that works alongside our Special Agents (Job Series 1811). With more than 800 additional employees, nearly one-third of CI’s workforce exists to provide support, guidance, and aid in accomplishing CI’s mission of deterrence. Generally, these roles fall into three separate categories; Investigative, Administrative, and Technical Staff which are embedded in every facet of IRS CI. Each of these professional staff categories supports the missions of the IRS and CI respectively.

Investigative Professional Staff

Our investigative professional staff are critical to advancing the law enforcement efforts of CI. Professional Staff can be found on the front lines of case work and behind the scenes of every CI activity. They actively participate in all aspects of criminal investigation from inception to prosecution. Some of these roles include:

  • Tax Fraud Investigative Assistants (TFIA) - The incumbent provides support to special agents conducting investigations of alleged tax fraud and other financial crimes. Work involves a series of different and unrelated steps and procedures. Assignments involve determining the nature and extent of information needs or problem areas, developing approaches best suited to respond to those needs. TFIAs will continue to have responsibility for some administrative duties to support the field office, such as TIMS filing, package processing, Tax Return Inventory (TRI), purchase card maintenance, supply ordering, etc. These duties will be shared amongst the team as assigned by the SIA.
  • Investigative Analysts (IA) - The incumbent performs a variety of duties related to the research, collection, analysis, and/or evaluation of information in order to assist in identifying noncompliance with tax laws and to support ongoing criminal investigations. The type of support needed and the duties to be performed in order to provide that support may vary from assignment to assignment. Examples include collecting, assimilating, and evaluating data from various sources to identify patterns, trends and associations; confirming the authenticity of information; keeping abreast of the progress of the investigation in order to adjust searches to cover evolving issues that may cross several lines of inquiry; and preparing reports of findings that stand alone or are part of a larger investigation.
  • Supervisory Investigative Analyst (SIA) - As a first level supervisor, the incumbent is responsible for assigning, directing, and reviewing the work of subordinate employees; planning, scheduling, and coordinating work operations; planning and carrying out the training and development of employees; evaluating employees' work performance; and performing all other related administrative managerial functions.

Administrative Professional Staff

Our administrative professional staff are critical at keeping CIs wheels turning by ensuring finances are available and our equipment is always running.

  • Administrative Officer – The incumbent is an analyst, evaluator and advisor to management on the effectiveness and efficiency of assigned program operations. Additionally, he/she is the principal liaison with headquarters and the office of the Director of Field Operations or other Senior Executive for administrative issues related to such areas as personnel, training, physical security, equipment management, and facilities support.
  • Management Program Analyst – The incumbent serves as an analyst, evaluator and advisor to management on the effectiveness and efficiency of assigned program operations in the CI field offices.
  • Secretary – The incumbent ensures that the clerical and administrative portions of the SAC’s (Special Agent in Charge) work are accomplished effectively, allowing the SAC to concentrate on professional and managerial duties. The effectiveness of the subordinate offices is affected by the degree to which the SAC’s office runs smoothly.

Information Technology (IT) and Forensic Staff

Our IT and Forensic staff is composed of employees with various educational backgrounds, practical experience, job series, and grade levels. These jobs cover, but are not limited to, innovative work in cybercrime, data analytics, cybersecurity, a crime lab, technology. These job functions include:

  • Computer Investigative Forensic Specialist – The incumbent supports criminal investigators dispersed nationwide in the recovery and forensic analysis of electronic evidence.
  • Fingerprint Specialist – The incumbent is an expert in latent print examination and courtroom testimony. This work involves developing, examining, evaluating, and verifying fingerprints and palm prints and providing complex case information in arduous courtroom conditions.
  • IT Specialist – The incumbent serves as a technical expert with substantial responsibility for providing end-user support and assistance on automated information technology systems and specialized law enforcement applications residing within Automated Criminal Investigation. The incumbent may be responsible for planning and coordinating Hotline work operations, directing the work assignments of Hotline Staff members, and providing customer service and support to CI’s user-community.

CI is invested in the development and maintenance of its Professional Staff community, and the roles listed above are just a portion of the career pathways available to qualified applicants. If you are interested in helping IRS Criminal Investigation accomplish its law enforcement mission, please review these opportunities in the Careers section of our website or select for potential openings. You can reach out to CI’s Professional Staff Advocates with any further career-related questions at

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