Expert CNO Developer

General information

Requisition #

R70192

Locations

USA-TX-San Antonio

Posting Date

08/26/2026

Security Clearance Required

TS/SCI

Remote Type

Onsite

Time Type

Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Expert CNO Developer to join our team in San Antonio, TX. In this role, you will become an integral member of a diverse team of elite cyber professionals supporting critical national security missions. You will work on challenging technical problems, develop innovative offensive cyber capabilities, and collaborate with leadership and customers to deliver high-impact solutions in a dynamic environment.

Responsibilities include but are not limited to:

• Designing and developing new hardware- or software-based CNO capabilities to support mission objectives
• Managing design, development, documentation, testing, and debugging application software and systems
• Applying expert knowledge of security concepts, computer networks, and system architectures to solve complex technical challenges
• Communicating project status, technical risks, and solutions effectively with leadership and customers
• Ensuring established software development standards, best practices, and security guidelines are consistently met

Minimum Qualifications:

• Bachelor's Degree and 9+ years of technical experience or Master's Degree and 7+ years of technical experience, or a PhD with 5+ years of technical experience
• Experience with Windows or Linux kernel/user-mode development
• Experience with Windows APIs and network protocols
• Experience programming and scripting with C, C++, and Python
• Experience debugging using WinDbg and GDB
• Ability to pass customer-specific Senior-level exams for developer qualification

Preferred Qualifications:

• Experience with OCO and/or CNO development
• Experience with Reverse Engineering using IDA or Ghidra disassemblers
• Experience with CI/CD workflows using Jenkins, Ansible or similar tools

Clearance Requirements: Active TS/SCI clearance is required

Physical Requirements: Must be able to remain in a stationary position 50% of the time

MANTECH 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.