Senior Vulnerability Researcher; Cloud & Containers

Position: Senior Vulnerability Researcher (Cloud & Containers)
Job Title:

Senior Vulnerability Researcher (Cloud & Containers)

Job Category:
Engineering

Time Type:
Full time

Minimum Clearance Required to Start:
Top Secret

Employee Type:
Regular

Percentage of

Travel Required:

Up to 10%

Type of Travel:
Continental US

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The Opportunity:

### We are seeking a Senior Vulnerability Researcher with deep expertise in cloud-native architecture, container runtimes, and advanced binary analysis. This role is ideal for a low-level expert who thrives on technical ambiguity and enjoys hunting for vulnerabilities within the "DNA of the cloud." You will use automated reasoning and manual deep-dives to uncover escapes and logic flaws in Kubernetes infrastructure, playing a key role in evaluating the security of critical distributed systems and contributing directly to national cybersecurity efforts.

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### Responsibilities:

* ### Conduct deep-dive research into OCI runtimes (runc, crun) and Linux kernel primitives (name spaces, cgroups, eBPF) to identify breakout and privilege escalation paths.
* ### Perform static and dynamic analysis on compiled binaries (Go, Rust, C++) using IDA Pro, Ghidra, or Binary Ninja to map undocumented logic and potential security issues.
* ### Build and maintain custom fuzzing harnesses (e.g., AFL++, lib Fuzzer) to stress-test gRPC interfaces, service mesh components, and microservices.
* ### Utilize concolic execution tools (e.g., Angr, Manticore) to automate the discovery of complex execution paths and bypass security checks.
* ### Investigate edge-case behaviors in containerized environments and low-level system initialization logic to reveal hidden attack surfaces.
* ### Develop custom tools and scripts (primarily in Python3) to automate research workflows, protocol decoding, and memory analysis.
* ### Document findings clearly and translate technical complexity into actionable reports for security and engineering teams.

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Qualifications:

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Required:

* ### An active Top Secret clearance.
* ### 7+ years of professional experience in vulnerability research, software exploitation, or low-level engineering.
* ### Expert-level proficiency in Go, Rust, and C/C++.
* ### Strong command of Python3 for scripting and automation of research tasks.
* ### Deep understanding of x86/ARM assembly and memory corruption primitives.
* ### Proven track record of finding vulnerabilities in distributed systems, virtualization layers, or container runtimes.
* ### Hands-on experience with disassembly and decompilation tools (e.g., IDA Pro, Ghidra, Binary Ninja) and debugging tools (GDB).
* ### Detailed understanding of Linux kernel internals, specifically name spaces, cgroups, and the container execution model.
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Experience with automated bug-hunting techniques, including fuzzing and symbolic/concolic execution.

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### Desired:

* ### An active SCI clearance is highly desired.
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Experience with Kubernetes security architecture and service mesh implementations (Istio, Linkerd).
* ### Familiarity with hardware-assisted isolation technologies and TEEs (Trusted Execution Environments).
* ### Ability to build scalable security tooling and infrastructure to support analysis workflows in a team setting.
* ### Background in cloud provider security (AWS, Azure, or GCP) and underlying hypervisor technology.

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* 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, you'll be part of a high-performing group dedicated to our customer's 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. You'll 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 nation's 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…