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Junior Vulnerability Researcher (5G & Protocol Security)

Company

CACI International

Location

Florham Park, NJ

Posted

June 27, 2026

Position Overview

Job Title: Junior Vulnerability Researcher (5G & Protocol Security)

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: Top Secret

Employee Type: Regular

Percentage of Travel Required: None

Type of Travel: None

* * *

**The Opportunity:**

**We are seeking a Vulnerability Researcher to join our 5G security team, focusing on protocol analysis and firmware reverse engineering. This role is for a practitioner with a strong systems background who is ready to take ownership of research tasks within complex telecommunications stacks. You will work as part of a high-performing group, identifying security flaws in 3GPP protocols and proprietary telecom binaries while developing the automated tooling necessary to secure national mobile infrastructure.**

**Responsibilities** **:**

**Execute research into 3GPP protocols (NGAP, GTP, etc.) to identify crashes and logic f...

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