This is the one part of the L3Harris process that is solidly first-party. On many roles, two things are screened before your resume clears for controlled work: US citizenship, and the ability to obtain and maintain a security clearance. The requirement is surfaced in the job title and the required qualifications, then re-stated as boilerplate, so it is never a surprise late in the loop. Export-control and ITAR eligibility is industry-standard for a defense prime and typically travels with the clearance requirement.
L3Harris is government-granted, not company-granted: L3Harris sponsors the clearance, but the federal government investigates and grants it, and a conditional offer can be followed by a government security investigation. A clearance is typically transferable for a two-year period from the date of debrief, so if you hold one, tell your recruiter and put it in your resume header. L3Harris’s FY2025 10-K states only that a significant number of its employees hold clearances and discloses no specific percentage, so do not trust any cleared-percentage figure you see quoted elsewhere.
Confidential and Secret
The common baseline on L3Harris defense roles. A new Secret investigation commonly runs about 1 to 6 months, and an interim Secret can be granted in roughly 5 to 10 days on a clean SF-86. Confidential is the lowest tier and less common on engineering reqs.
Top Secret
A deeper single-scope background investigation for more sensitive national-security programs. Expect a longer timeline than a Secret, though an interim Top Secret can still land in roughly 5 to 10 days on a clean SF-86.
TS/SCI
Top Secret plus Sensitive Compartmented Information access, granted by an agency and commonly taking about 6 to 18 months. Some programs add a counterintelligence or full-scope polygraph.
Clearance-processing times are typical published ranges and vary by case; an interim determination is faster than final adjudication, and an existing in-scope DoD clearance may transfer for two years from debrief. L3Harris does not publish which tier maps to which role, so these describe the tiers, not a role-to-tier mapping.