Security Research Engineer

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

6d • $118,000 - $203,000

About The Position

i3 is building a new security research team and seeks an engineer combining practical security research with software development and automation skills. The engineer will support triage, vulnerability analysis, proof-of-concept development, and reporting while building LLM harnesses and research infrastructure for the team. Hands-on experience building or substantially extending an LLM or agent harness is required.

The position involves developing and maintaining research automation and tools, improving workflow reliability, and working with researchers to turn investigation techniques into dependable tools. The stated pay range is $118,000–$203,000; compensation is not guaranteed within that range and may depend on factors including responsibilities, education, experience, skills, internal equity, market data, and geographic location.

An active Top Secret/SCI clearance and U.S. citizenship are required. i3 is a 100% team member-owned business headquartered in Huntsville, Alabama. Its areas of work include missile and aviation systems engineering and logistics, electronic warfare, UAS integration and flight operations, C5ISR engineering, cybersecurity and IT/IA, and virtual training, simulation, and serious game development. It supports DoD military services, the Missile Defense Agency, NASA, other government organizations, and private industry customers.

Requirements

• At least 3 years of experience in security research, software engineering, security tooling, or closely related work.
• Bachelor’s degree in Computer Engineering, Computer Science, or a related technical field; additional years of experience may substitute for the degree.
• Demonstrated vulnerability analysis experience, including reproducing issues and understanding their root causes.
• Strong programming skills and experience building tools that others can use and maintain.
• Practical experience building or substantially extending LLM harnesses, including tool integration and troubleshooting.
• Familiarity with reverse engineering, debugging, and proof-of-concept development.
• Clear technical writing and ability to document evidence, assumptions, and limitations.
• Active Top Secret/SCI clearance.
• U.S. citizenship.

Nice To Haves

• Experience with sandboxed execution, fuzzing infrastructure, automated evaluations, or reproducible research environments.

Responsibilities

• Triage findings, reproduce vulnerabilities, and support root-cause analysis and proof-of-concept development.
• Build and maintain LLM harnesses that connect models with research tools, relevant context, and execution environments.
• Develop automation for code and binary analysis, experimentation, evidence collection, and report generation.
• Improve workflow reliability through logging, execution controls, reproducibility, and evaluations.
• Verify generated code and findings against observable system behavior.
• Maintain reusable scripts, research environments, and documentation.
• Work with researchers to turn useful investigation techniques into dependable tools.

What This Job Offers

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