CNO Developer
mantech internationalSan Antonio (TX)
About the role
Requisition #: R70573Locations: USA-TX-San Antonio
Posting Date: 09/08/2026 Security Clearance Required: Secret
Remote Type: OnsiteTime Type: Full time
Contact Email:
careers@mantech.comApply: https://careers.mantech.com/en_US/careers/JobDetail/CNO-Developer/65920Unlock 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 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 and defensive 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 the design, development, documentation, testing, and debugging of 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:
BS degree and 5+ years of software development experience 5+ years of experience programming and scripting with C/ C++, and Python Experience with Windows and Linux kernel/user-mode developmentExperience debugging using WinDbg and GDB
Preferred Qualifications:
- Experience with CNO developmentExperience with Reverse Engineering using IDA or Ghidra disassemblers
- Experience with CI/CD workflows using Jenkins, Ansible or similar tools
- Experience with technical documentation
Clearance Requirements:
Must have an active/current Secret security clearance with the ability to obtain and maintain a TS/SCI
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.
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