Junior Vulnerability Researcher (5G & Protocol Security)
Job Location:
Florham Park, NJ - USA
Monthly Salary:
Posted on:
Vacancies:
Job Summary
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 flaws using stateful fuzzing techniques.
Perform static and dynamic analysis on compiled telecom binaries and firmware to understand undocumented protocol logic.
Support the development of custom Python3 scripts for protocol decoding and automating analysis of closed-box systems.
Assist in mapping state machines within 5G session management flows using symbolic or concolic execution tools.
Analyze signaling and data plane components to identify potential attack surfaces in 5G Core and RAN environments.
Use debugging tools and packet analysis software (e.g. Wireshark) to inspect protocol traffic and hardware state.
Document research findings and contribute to the development of technical security reports.
Qualifications:
Required:
An active Top Secret clearance.
35 years of professional experience in software exploitation reverse engineering or protocol development.
Strong proficiency in C/C and scripting experience in Python3.
Working knowledge of 4G/5G architecture and networking protocols (TCP/IP SCTP HTTP/2).
Experience with disassembly tools such as IDA Pro Ghidra or Binary Ninja.
Foundational understanding of binary analysis and memory corruption primitives.
Demonstrated ability to conduct independent technical research and analyze complex software systems.
Desired:
An active SCI clearance.
Experience with software-defined radio (SDR) or cellular testing equipment.
Familiarity with Linux-based telecom network functions.
Participation in security research projects or CTFs with a focus on networking or pwnable challenges.
What You Can Expect:
A culture of integrity.
At CACI we place character and innovation at the center of everything we do. As a valued team member youll be part of a high-performing group dedicated to our customers missions and driven by a higher purpose to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. Youll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together we will advance our nations most critical missions build on our lengthy track record of business success and find opportunities to break new ground in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including but not limited to geographic location Federal Government contract labor categories and contract wage rates relevant prior work experience specific skills and competencies education and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI you will receive comprehensive benefits such as; healthcare wellness financial retirement family support continuing education and time off benefits.
The proposed salary range for this position is:
$79400 - $162700Required Experience:
Junior IC
About Company
CACI employs a diverse range of talent to create an environment that fuels innovation and fosters continuous improvement and success. At CACI, you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security miss ... View more
