1

Investigator Jobs in Delaware (NOW HIRING)

Investigator II

New Castle, DE · On-site

$45K - $56K/yr

In addition to work performed by an Investigator I, employees independently perform the full range of Essential Functions under general supervision for both routine and complex investigations.

Surveillance Investigator

Wilmington, DE · On-site

$20.75 - $25.75/hr

Allied Universal Compliance and Investigation Services is the premier destination for a career in insurance claim investigation. As a global leader, we provide dynamic opportunities for claim ...

The Lead Insider Threat Investigator provides mentorship and training ensuring compliance with company, legal and regulatory requirements. This role provides support to the Senior Manager and their ...

Associate Investigator

Newark, DE · On-site

$45K - $45K/yr

Chemours is seeking an Associate Investigator to join our growing Chemours Leveraged Analytical team focusing in Nuclear Magnetic Resonance Spectroscopy (NMR). The successful candidate will be ...

next page

Showing results 1-20

Investigator information

See Delaware salary details

$32K

$75.4K

$131.1K

How much do investigator jobs pay per year?

As of Aug 30, 2026, the average yearly pay for investigator in Delaware is $75,389.00, according to ZipRecruiter salary data. Most workers in this role earn between $52,500.00 and $98,600.00 per year, depending on experience, location, and employer.

What does an investigator do?

An Investigator is responsible for gathering facts, collecting evidence, and conducting interviews to solve cases or uncover information. They may work in law enforcement, private investigation, corporate security, or other specialized fields. Their duties often include surveillance, report writing, and presenting findings to clients or authorities. Investigators must be detail-oriented, analytical, and maintain confidentiality throughout their work.

What are the key skills and qualifications needed to thrive as an investigator, and why are they important?

To thrive as an Investigator, you need strong analytical abilities, attention to detail, and a relevant degree or law enforcement background. Familiarity with investigative tools, case management software, and sometimes certifications like Certified Fraud Examiner (CFE) are typically required. Outstanding communication, critical thinking, and discretion are essential soft skills for gathering information and managing sensitive situations. These skills and qualifications are vital to effectively uncover facts, maintain integrity, and ensure successful case resolution.

How can I become a criminal investigator?

A criminal investigator is an officer of the law who investigates crimes, interviews witnesses, and helps build cases that lead to an indictment. To start a career as a criminal investigator, you need to have several qualifications, which depend largely on the organization for which you plan to work. At the federal level, organizations like the FBI require you to gain acceptance into and complete an intense, five-month training program. For this level, you need significant law enforcement experience, and most applicants hold a degree in criminal justice or a related field. If you want to become a state or local police officer, you still need to attend a police academy, but the qualifications for admission are lower. You need a high school diploma or a GED certificate. However, it can take some time to work up to the level of a criminal investigator or detective.

How do investigators typically work with other departments or external agencies during an investigation?

Investigators often collaborate extensively with other internal departments such as legal, compliance, and human resources, as well as with external agencies like law enforcement or regulatory bodies. This teamwork ensures a thorough and coordinated approach to gathering evidence, conducting interviews, and maintaining proper documentation. Clear communication and strict adherence to protocols are essential to preserve the integrity and confidentiality of the investigation. Building strong working relationships with colleagues and agency contacts can also help streamline the process and achieve effective outcomes.

What is the difference between Investigator vs Forensic Scientist?

AspectInvestigatorForensic Scientist
Required CredentialsHigh school diploma or equivalent; law enforcement training or certifications often preferredBachelor's degree in forensic science, chemistry, biology, or related field; certifications may enhance prospects
Work EnvironmentLaw enforcement agencies, crime scenes, investigationsLaboratories, crime labs, research facilities
Employer & Industry UsagePolice departments, federal agencies, private investigation firmsCrime labs, forensic laboratories, research institutions
Common Search & Comparison IntentUnderstanding investigative roles in law enforcementUnderstanding scientific analysis in forensic work

Investigators focus on gathering evidence, interviewing witnesses, and solving cases in the field, often working directly at crime scenes. Forensic scientists analyze physical evidence in labs to support investigations. Both roles are essential in criminal justice but differ in their work environment, credentials, and daily tasks.

What are some investigator jobs?

Investigator jobs include roles such as criminal investigators, private investigators, insurance investigators, and corporate investigators. These positions involve gathering evidence, conducting interviews, and analyzing information to solve cases or resolve disputes, often requiring knowledge of legal procedures and investigative tools.

What are the most commonly searched types of Investigator jobs in Delaware?

The most popular types of Investigator jobs in Delaware are:

What are popular job titles related to Investigator jobs in Delaware?

For Investigator jobs in Delaware, the most frequently searched job titles are:

What cities in Delaware are hiring for Investigator jobs?

Cities in Delaware with the most Investigator job openings:

Infographic showing various Investigator job openings in Delaware as of August 2026, with employment types broken down into 87% Full Time, 11% Part Time, and 2% Contract. Highlights an 93% Physical, 1% Hybrid, and 6% Remote job distribution, with an average salary of $75,389 per year, or $36.2 per hour.

Criminal Investigator

Newark, DE


Criminal Investigation & Law Enforcement | IRS Careers
Public Administration • 10K+ employees

7.5

Company rating: 7.5 out of 10

Based on 129 frontline employees who took The Breakroom Quiz

130th of 295 rated public sector bodies

People enjoy working here

Good employer

Recommended by students


$57K/yr

Full-time

Posted 13 days ago


Job description

WHAT IS CRIMINAL INVESTIGATION?
A description of the business units can be found at: https://www.jobs.irs.gov/about/who/business-divisions

  • Position(s) are to be filled in the following area(s):
    • CI - Criminal Investigation
  • Consider each location carefully when applying. If you are selected for a location, that location will become your official post of duty.
REVIEW THE ADDITIONAL INFORMATION BELOW FOR FURTHER DETAILSQualifications:Federal experience is not required. The experience may have been gained in the public sector, private sector or Volunteer Service. One year of experience refers to full-time work; part-timework is considered on a prorated basis. To ensure full credit for your work experience, please indicate dates of employment by month/day/year, and indicate number of hours worked per week, on your resume.
You must meet the following requirements by the closing date of this announcement.
GENERAL REQUIREMENTS FOR GRADE 07 AND 09:
  • EXPERIENCE - Must have been acquired in investigative work related to the ACCOUNTING OR AUDITING OF BUSINESS OR COMMERCIAL PRACTICES OF SUBJECTS INVESTIGATED. For examples of specialized experience, click here.
  • EDUCATION - If substituting education for specialized experience for the grade 7 or 9, education must be supplemented by at least 15 semester/23 quarter hours in accounting plus an additional 9 semester/14 quarter hours from among the following fields: business law, economics, finance, tax law or money and banking. You may qualify by a combination of experience and education. Combinations of education and experience are qualifying.
ADDITIONAL REQUIREMENTS FOR GRADE 07:
SPECIALIZED EXPERIENCE: You must have one year of specialized experience at a level of difficulty and responsibility equivalent to the GL-05 grade level in the Federal service. Specialized experience for this position includes experience in or related to investigation of criminal violations that provided the experience to successfully perform the duties of the IRS Special Agent. Experience must have required:
  1. The exercise of tact, initiative, ingenuity, resourcefulness and judgment in collecting, assembling, and developing facts, evidence and other pertinent data through investigative techniques which included personal interview;
  2. Making oral and written reports and presentations of personally conducted or personally directed investigations, examinations, or inspections; AND
  3. Analyzing and evaluating evidence and arrive at sound conclusions.
OR
EDUCATION: You may substitute education for specialized experience as follows:
  • One full year of progressively higher-level graduate education OR
  • Superior Academic Achievement - A bachelor's degree, with one of the following: A GPA of 3.0 or higher on a 4.0 scale for all completed undergraduate courses or those completed in the last 2 years of study, or a GPA of 3.5 or higher on a 4.0 scale for all courses in the major field of study or those courses in the major completed in the last 2 years of study, or rank in the upper one third of the class in the college, university, or major subdivision, or membership in a national scholastic honor society recognized by the Association of College Honor Societies. If substituting Superior Academic Achievement (SAA) for experience at the GS-7 level, please note that grade-point averages are rounded to one decimal place. For example, 2.95 will round to 3.0 and 2.94 will round to 2.9.
ADDITIONAL REQUIREMENTS FOR GRADE 09:
SPECIALIZED EXPERIENCE: You must have one year of specialized experience at a level of difficulty and responsibility equivalent to the GL-07 grade level in the Federal service. Specialized experience for this position includes, experience in or related to investigation of criminal violations that provided the specific experience needed to successfully perform the duties of this position. Experience must be sufficient to demonstrate the ability to gather intelligence, analyze and evaluate raw investigative data, prepare comprehensive written investigative reports, and investigate complex claims involving suspected crimes or alleged fraud. Examples of qualifying experience include:
  1. Investigating criminal cases requiring the use of recognized investigative methods and techniques and that may have included appearing in court to present evidence;
  2. Supervising or conducting interviews or interrogations that involved eliciting evidence, data, or surveillance information;
  3. Investigating computerized business and/or accounting systems and forming sound conclusions as to related criminal business practices and compliance with Federal laws and regulations.
OR
EDUCATION:
You may substitute education for specialized experience as follows:
  • Two full years of progressively higher-level graduate education; OR a master's degree or equivalent graduate degree (i.e., LL.B. or J.D.)
You must meet the following special requirements:
  • MINIMUM AGE REQUIREMENT: Generally, applicants for most Federal jobs must be at least 18 years old. For additional information refer to:Is there an age limit for Federal employment? - OPM.gov
    • In addition, provisions of the Fair Labor Standards Act, Federal, State, and local laws that relate to the employment of minors in positions requiring the use of firearms must be observed.
  • MAXIMUM ENTRY AGE: Provisions of Public Law 93-950 and Public Law 100-238 allow the imposition of a maximum age for original appointments to a law enforcement officer position within the Federal government. The date immediately preceding your 37th birthday is the final date of referral for selection. This age restriction does not apply to preference eligible veterans or land management eligibles. Applicants who are age 37 or over may subtract any of their prior federal service that is in approved position and that is creditable for retirement from their current age to meet this age requirement. This is to ensure you will be able to complete a total of 20 years of special retirement service by the time you reach the mandatory retirement age of 57. Applicants must provide proof of veterans' preference, land management eligibility, or prior creditable Federal service as listed in the announcement.

  • PHYSICAL EXAMINATION: You must pass a medical examination prior to being appointed. This position requires moderate to arduous physical exertion involving walking and standing, use of firearms, and exposure to inclement weather. Manual dexterity with free motion of fingers, wrists, elbows, shoulders, hips, and knee joints is required. Arms, hands, legs, and feet must function sufficiently in order for applicants to perform the duties satisfactorily. All of the medical requirements MUST be met at the time of initial examination/test. Applicants failing to meet the medical requirements at the time of their initial examination/test will be considered ineligible for the position.
    • Vision: For all positions, near vision, corrected or uncorrected, must be sufficient to read Jaeger type 2 at 14 inches. Normal depth perception and peripheral vision are required, as is the ability to distinguish shades of color by color plate tests. For all positions covered by this standard, applicants who have undergone refractive surgery (i.e., surgery to improve distant visual acuity) must meet Treasury-approved requirements which include documentation that they have passed specific exam and protocol testing. Uncorrected distant vision must test 20/200, and corrected distant vision must test 20/20 in one eye, and 20/30 in the other.
    • Hearing: Hearing loss, as measured by an audiometer, must not exceed 30 decibels (A.S.A. or equivalent I.S.O.) in either ear in the 500, 1000, and 2000 Hz ranges. You must be able to hear the whispered voice at 15 feet with each ear without the use of a hearing aid.
    • Other Medical Requirements: You must possess emotional and mental stability. Any condition that would hinder full, efficient performance of the duties of this position or that would cause an individual to be a hazard to himself/herself or to others is disqualifying.

For more information on qualifications please refer to OPM's Qualifications Standards.Education:A college or university degree generally must be from an accredited (or pre-accredited) college or university recognized by the U.S. Department of Education. For a list of schools which meet these criteria, please refer to Department of Education Accreditation page.
FOREIGN EDUCATION: Education completed in foreign colleges or universities may be used to meet the requirements. You must show proof the education credentials have been deemed to be at least equivalent to that gained in conventional U.S. education program. It is your responsibility to provide such evidence when applying. Click here (Section 3, Explanation of Terms) or here for Foreign Education Credentialing instructions.
We recommend choosing an evaluator from a member organization of one of the following national associations of credential evaluation services: National Association of Credential Evaluation Services (NACES) or Association of International Credentials Evaluators (AICE).Employment Type: OTHER


What Internal Revenue Service employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom