Cyber Operations Developer

Salary: $91000 - 193000 per year Requirements: We require an active TS/SCI clearance. We require a bachelors degree in a technical discipline. We require at least 5 years of professional experience. We need strong recent experience with C for systems-level development. We need strong recent experience with Python for scripting, automation, and tooling. We require proficiency with Git and modern software development workflows. We need hands-on experience in several of the following areas: cross-compilation for multiple targets, reverse engineering, vulnerability research, exploit development, modular implant or payload framework development, process injection or similar low-level techniques, C2 systems, and network stack programming. We prefer 8 or more years of experience. We prefer a deep background in Unix-like environments, with Linux experience strongly favored. We will also consider equivalent depth in Windows environments. We prefer demonstrated end-to-end experience building complex offensive tooling. We highly value experience developing and cross-compiling a full remote access tool. We prefer familiarity with secure coding standards and testing approaches. We require willingness to work on-site in Annapolis Junction, Maryland. We value experience with Mbed TLS, CMocka, Prompt Toolkit, Click, and Poetry. Responsibilities: We develop and maintain cyber capabilities using C and Python. We design modular, scalable tools for operational deployment. We perform cross-compilation across varied architectures and platforms. We conduct reverse engineering and low-level systems analysis. We contribute to vulnerability research and exploit development efforts. We build and integrate implants and tooling with C2 frameworks. We work closely with operators to refine mission requirements. We maintain clean, version-controlled codebases and reproducible builds. Technologies: Git Support Linux Network Python Unix Windows TCP/IP More: We are Halcyon Labs, and we are seeking an experienced Cyber Operations Capabilities Developer to support mission-critical offensive cyber operations by building advanced, low-level, high-performance tooling. This is a highly technical engineering role spanning the full lifecycle from research and development through operational deployment. The position is based on-site in Annapolis Junction, Maryland, and we offer a comprehensive benefits package that includes paid time off, health and welfare insurance, and a 401(k) plan for eligible employees. We also maintain a strong commitment to diversity, inclusion, and equal opportunity in the workplace. last updated 27 week of 2026