**MANTECH** seeks a motivated, career and customer-oriented **Senior CNO Developer** to join our team in **Annapolis Junction, MD** . This is an onsite position.

This position supports mission-critical national security objectives and operates at the intersection of hardware, software, and embedded systems. This hands-on role focuses on transforming proof-of-concept exploits and disclosed vulnerabilities into reliable, operationally ready capabilities. The role is ideal for engineers who thrive in fast-paced environments and enjoy solving complex, unconventional technical challenges.

**Responsibilities include but are not limited to:**

+ Design, develop, document, and test custom hardware- and software-based Computer Network Operations (CNO) capabilities and tools, with an emphasis on embedded and resource-constrained systems.

+ Reverse engineer complex hardware, firmware, and software systems to understand functionality and identify vulnerabilities.

+ Conduct in-depth vulnerability research and engineer operational exploits against diverse targets and architectures.

+ Work directly with mission stakeholders to collaborate, design, and validate capabilities against operational requirements.

+ Apply knowledge of core network and security concepts to guide capability architecture and deployment.

+ Perform rigorous code reviews to ensure software quality, operational security, and runtime performance.

+ Build, manage, and troubleshoot advanced Linux-based development and analysis environments.

**Minimum Qualifications:**

+ Bachelor's degree in STEM field; may substitute based on additional experience and 7 years of position-relevant work experience and DoD 8570.01-m IAT Level II certification.

+ Demonstrated experience in Computer Network Operations (CNO) capability development, access development, and Vulnerability Research (VR) & Exploit Development.

+ Strong programming proficiency in C/C++ and Assembly, alongside solid scripting skills in Python for automation and tool development.

+ Proven expertise in advanced binary analysis and reverse engineering using tools such as Ghidra, IDA Pro, or Binary Ninja.

+ Deep understanding of low-level operating system internals, memory models, and security architectures across one or more platforms (e.g., Linux/Unix, Windows, mobile, or network devices).

+ Deep expertise in configuring, managing, and troubleshooting Linux/Unix environments, including navigating and bypassing complex security constraints.

+ Extensive experience working with embedded architectures (e.g., ARM, MIPS, PowerPC) and RTOS environments.

**Preferred Qualifications:**

+ Experience with Linux kernel development and network socket programming.

+ Hands-on knowledge of IoT device architectures and firmware extraction/analysis.

+ Strong networking background and network protocol analysis skills. · Experience with virtualization platforms and hypervisor technologies.

+ Experience integrating security and testing tools into automated CI/CD pipelines.

+ Familiarity with utilizing machine learning techniques to accelerate capability development or vulnerability discovery.

**Clearance Requirements** :

+ Must have a current/active DoD TS/SCI.

**Physical Requirements:**

+ The person in this position must be able to remain in a stationary position 50% of the time. Occasionally moves about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers via email, phone, and virtual communication, which may involve delivering presentations.

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.