
Senior Attack Engineer, Offensive Tooling
Horizon3.ai
full-time
Posted on:
Location Type: Remote
Location: United States
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Salary
💰 $180,000 - $240,000 per year
Job Level
About the role
- Develop and maintain a multi-platform implant written in Rust (Windows, Linux, macOS; x86/x64/ARM)
- Build and extend C2 server infrastructure, task dispatch, and communications protocols
- Implement post-exploitation modules: credential access, process injection, privilege escalation, lateral movement
- Research and implement AV/EDR evasion techniques to keep tooling operational against modern defenses
- Design and build network pivoting and tunneling capabilities
- Write integration tests that exercise tooling against real targets across multiple OS and architecture combinations
Requirements
- Strong proficiency in Rust, including unsafe code, FFI, async runtimes (tokio), and cross-compilation
- Deep knowledge of Windows internals: Win32 API, process injection, memory manipulation, DLL loading, PE format
- Experience with credential access techniques (DPAPI, LSASS, browser credential stores)
- Familiarity with Linux internals: libc, process enumeration
- Understanding of networking at the packet level (TCP/IP, ICMP, custom binary protocols)
- Demonstrated experience building or maintaining C2 / implant software (custom or open-source)
- Background in red team operations or offensive tool development
- Proficiency in Python for developing and maintaining attack automation and integration
- Experience developing production safe, high quality code deployed to end user machines
Benefits
- Health, vision & dental insurance for you and your family
- Flexible vacation policy
- Generous parental leave
- Competitive salary
- Equity package in the form of stock options
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Rustunsafe codeFFIasync runtimescross-compilationWindows internalsWin32 APIprocess injectionmemory manipulationcredential access techniques
Soft Skills
researchproblem-solvingcommunicationteam collaborationattention to detail