Junior Vulnerability Researcher (Cloud & Containers)

The Opportunity:
We are seeking a Vulnerability Researcher with a strong background in systems-level engineering and a passion for cloud security. This role is for a practitioner who has moved beyond the basics and is ready to take ownership of research tasks within the DNA of the cloud. You will apply your knowledge of container internals and binary analysis to hunt for escapes and logic flaws in Kubernetes environments. You will work as part of a high-performing team executing complex vulnerability research and developing automated tools to secure national cybersecurity infrastructure.

Responsibilities:

• Execute research into OCI runtimes (runc crun) and Linux kernel primitives (namespaces cgroups) to identify breakout and privilege escalation paths.

• Perform static and dynamic analysis on compiled binaries (Go Rust or C) to map logic and identify potential security vulnerabilities.

• Develop and maintain custom fuzzing harnesses (e.g. AFL libFuzzer) to stress-test gRPC interfaces and microservice components.

• Use symbolic and concolic execution tools (e.g. Angr Manticore) to automate the discovery of complex execution paths.

• Analyze containerized environments and system initialization logic to identify and document potential attack surfaces.

• Write custom Python3 scripts to automate research workflows including firmware unpacking and memory analysis.

• Generate detailed technical reports and documentation for discovered vulnerabilities and research methodology.

Qualifications:

Required:

• An active Top Secret clearance.

• 35 years of professional experience in vulnerability research reverse engineering or systems-level software development.

• Proficiency in Go Rust or C/C and strong scripting skills in Python3.

• Experience with disassembly and decompilation tools such as IDA Pro Ghidra or Binary Ninja.

• Working knowledge of Linux kernel internals specifically regarding container isolation (namespaces/cgroups).

• Hands-on experience with debugging tools like GDB and packet analysis tools like Wireshark.

• Familiarity with container orchestration (Kubernetes) and the OCI runtime specification.

• Demonstrated ability to conduct independent technical research and document complex findings.

Desired:

• An active SCI clearance.

• Previous experience with fuzzing frameworks and vulnerability discovery in distributed systems.

• Understanding of x86 or ARM assembly language.

• Experience with cloud provider security (AWS Azure or GCP).

• Relevant security certifications or a history of participation in advanced CTF competitions.

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: