Senior Security Researcher

Integration Innovation, Inc. (i3) • Arlington, VA

23h • $124,000 - $208,000

About The Position

i3 is hiring a senior researcher to join a new security research team focused on rapid triage, reverse engineering, vulnerability discovery, and proof-of-concept exploit development. The researcher independently investigates unfamiliar systems, turns initial findings into reproducible evidence, and produces actionable reports. Practical experience using LLMs and associated agent harnesses throughout technical investigations is required.

The role involves assessing incoming findings, analyzing source code and system behavior, developing reliable proof-of-concept exploits, and documenting evidence, root causes, impacts, limitations, and remediation considerations. The researcher will also troubleshoot LLM-assisted workflows, independently verify model-generated conclusions and code, build reusable research tools, and contribute to peer review and shared documentation.

The listed pay range is $124,000–$208,000. The posting states that the range is a general guideline, not a guarantee; offer considerations include responsibilities, education, experience, skills, internal equity, market data, geographic location, and applicable laws. An active Top Secret/SCI clearance and U.S. citizenship are required.

i3 is a technically diverse, 100% team member-owned business headquartered in Huntsville, Alabama. It specializes in missile and aviation systems engineering and logistics, electronic warfare, UAS integration and flight operations, C5ISR engineering, cybersecurity and IT/IA solutions, and virtual training, simulation, and serious game development. Its customers include DoD military services, the Missile Defense Agency, NASA, other government organizations, and private industry.

Requirements

• At least 4 years in vulnerability research, reverse engineering, exploit development, or closely related security engineering.
• Bachelor’s degree in Computer Engineering, Computer Science, or a related technical field; additional years of experience may substitute for the degree.
• Demonstrated ability to complete investigations independently, from initial signal to proof of concept and final report.
• Depth in at least one relevant technical area, such as native applications, operating systems, firmware, or web services.
• Strong programming and debugging skills.
• Hands-on experience configuring and using LLMs and agent harnesses for technical work.
• Clear technical writing and sound judgment about evidence, uncertainty, and research priorities.
• Active Top Secret/SCI clearance.
• U.S. citizenship.

Nice To Haves

• Experience with fuzzing, program analysis, harness development, or research automation.

Responsibilities

• Triage incoming findings, reproduce reported behavior, and assess impact and exploitability.
• Analyze source code, binaries, protocols, and runtime behavior to identify vulnerabilities and root causes.
• Develop reliable proof-of-concept exploits that demonstrate impact and document conditions required for exploitation.
• Write clear reports covering evidence, reproduction steps, root cause, impact, limitations, and remediation considerations.
• Use and troubleshoot LLM-assisted workflows for analysis, experimentation, coding, and report preparation.
• Independently verify model-generated conclusions and code.
• Build reusable research tools and contribute to peer review and shared documentation.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior