Junior Vulnerability Researcher (5G & Protocol Security)
CACI International • Florham Park, NJ • Posted June 10, 2026
About the Role
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...
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...