
Real job — pulled straight from Northrop Grumman’s careers page · Verified September 26, 2026 · No reposts.
Job description
Northrop Grumman is hiring a Senior Principal Security Investigator — a full-time, based in Roy, UT role ($101k–$152k). Apply directly on Northrop Grumman's careers page below.
Sentinel - Sr Principal Security Investigator - 19957
Location: United States-Utah-Roy
Time Type: Full time
Job Description
RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE REQUIRED FOR START: YesCLEARANCE TYPE: Top SecretTRAVEL: Yes, 10% of the TimeDescription
At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work — and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.Northrop Grumman Defense Systems is seeking a Sr. Principal Security Investigator. This position will be located in Roy, UT and will support the Sentinel (GBSD) Ground Base Strategic Deterrent program and the Strategic Deterrent Systems (SDS) Division.
What You’ll Get To Do:
You will support our counterintelligence and security investigation program at our Roy, UT, location. Responsibilities include, but are not limited to, investigating incidents involving insider threats, counterintelligence, and suspected compromises of classified information. You will conduct subject interviews, collect supporting evidence, and write and submit reports of investigation. You will oversee and implement our SDS counterintelligence program; coordinate information gathering and reporting with applicable Northrop Grumman functions (e.g., HR, ER, Legal, and Ethics) and cognizant security authorities; maintain case management evidence; report adverse information to applicable cognizant security authorities; and conduct security and counterintelligence briefings as required.
As a full-time employee of Northrop Grumman, you are eligible for our robust benefits package including:
• Medical, Dental & Vision coverage
• 401(k)
• Educational Assistance
• Life Insurance
• Employee Assistance Programs & Work/Life Solutions
• Paid Time Off
• Health & Wellness Resources
• Employee Discounts
This position’s standard work schedule is a 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off.
You’ll Bring These Qualifications:
- Bachelor’s degree with eight years of related experience; Master’s degree with six years of related experience; or Ph.D. with four years of related experience. An additional four years of experience may be considered in lieu of a degree.
- Must have an active U.S. Government DoD Top Secret security clearance at the time of application that is current and within scope, with the ability to obtain and maintain Special Access Program (SAP) approval within a reasonable period, as determined by the company to meet its business needs.
- Experience with Microsoft Office software products (Word, Excel, PowerPoint, Outlook, etc.).
- Excellent written and verbal communication skills.
- Experience writing investigative security reports.
- A high standard of integrity and the ability to handle confidential, sensitive, and personal information securely.
- Experience interpreting and applying security regulations, standards, and requirements.
- Experience supporting security incident investigations and administering or reviewing access to sensitive information, systems, or facilities.
- Familiarity with 32 CFR Part 117 (NISPOM) and DoD Manual 5205.07.
These Qualifications Would be Nice to Have:
- Self-starter who requires minimal supervision.
- Proficiency with SIMS, DISS, JADE, and/or other applicable government security databases.
- Formal investigative training.
- Basic knowledge of access controls and security systems.
- Ability to demonstrate tact, discretion, and diplomacy across a variety of program areas.
- Ability to excel in a fast-paced, deadline-driven environment.
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Frequently asked questions
What is the salary for Senior Principal Security Investigator at Northrop Grumman?
The estimated salary range for Senior Principal Security Investigator at Northrop Grumman is $101,000 - $152,000 USD per year.
What skills are required for Senior Principal Security Investigator at Northrop Grumman?
The required skills for Senior Principal Security Investigator at Northrop Grumman include: Microsoft 365.
What is the seniority level for Senior Principal Security Investigator at Northrop Grumman?
Senior Principal Security Investigator at Northrop Grumman is a Senior / Principal level position.
How do I apply for Senior Principal Security Investigator at Northrop Grumman?
You can view the full description and apply for Senior Principal Security Investigator at Northrop Grumman on EchoJobs: https://echojobs.io/job/northrop-grumman-sentinel-sr-principal-security-investigator-19957-odcfj.



