Windows CNO Developer

Job Title: Windows CNO Developer
Location: Herndon, Virginia
Type: Direct Hire / Salaried
Contractor Work Model: Onsite
Security Clearance: CI Poly needed to start

Join a top-tier aerospace & defense company supporting mission-critical national security operations. This role is part of a highly specialized offensive cyber team developing advanced Computer Network Operations (CNO) capabilities aligned with Intelligence Community objectives.

You’ll work alongside elite engineers and operators on cutting-edge offensive tooling, contributing to some of the most technically challenging and sensitive cyber programs in the industry. This is a long-term, well-funded effort backed by a Fortune 100 organization known for its innovation, stability, and investment in top cyber talent.

Responsibilities

• Develop and implement offensive cybersecurity tools and techniques in C/C++ on Windows platform, with a focus on CNO (Computer Network Operations) activities.
• Design, write, and optimize code in C, C++, Objective-C, Swift, and Python to support offensive operations and reverse engineering tasks.
• Utilize debugging tools such as WinDbg and reverse engineering tools like IDA Pro, Ghidra, Binary Ninja to analyze and improve code functionality.
• Analyze network protocols, sockets, and OS internals to identify vulnerabilities and exploit mitigation techniques such as DEP and ASLR.
• Collaborate with team members to develop and refine offensive cyber capabilities, ensuring adherence to best practices and security standards.

• Minimum of 3+ years of experience developing in C/C++ on Windows, with a focus on offensive cybersecurity work (e.g., CNO, CNE, CNA).
• Experience with designing, coding, and debugging in C, C++, Objective-C, Swift, and Python.
• Proficiency with assembly language reading/writing (x86, x64) and tools such as WinDbg, IDA Pro, Ghidra, Binary Ninja.
• Understanding of network protocols, sockets, OS internals, and exploitation mitigation techniques (DEP, ASLR).
• Experience with version control systems like Git and understanding of configuration management principles.
• Ability to work on an onsite environment in Herndon, VA

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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