Principal CNO Software Engineer

State College, PA Until 9/21/2026 5+ years exp First posted July 23, 2026 Last posted July 23, 2026
Job description

Principal CNO Software Engineer

Zetier is seeking Principal CNO Software Engineers to develop operationally critical cyber capabilities. Candidates will demonstrate practical experience designing, developing, and deploying tools intersecting command and control, persistence, and networking.

Required:

  • Highly experienced with low-level programming (C/C++)
  • Experience developing in scripting languages (Python)
  • Highly experienced in systems software development (Linux/Windows kernel drivers)
  • Successfully developed cutting edge end-to-end cyber solutions
  • Effective communication with customers and teammates
  • Active U.S. security clearance

Desired:

  • Experience working in networking (802.11ac, Zigbee, GSM, SATCOM, SDN, UHF/VHF, 5g)
  • Integration with standard system libraries (POSIX, WIN32 API)
  • Development on embedded platforms (uBoot, drone firmware, IOT)
  • Reverse engineering experience (gdb, Binary Ninja, IDA Pro)
  • Familiar reading assembly / compiled programs (x86, x64, ARM)
  • Securely implemented cryptographic primitives (AES-GCM, SHA256, ECDSA)
  • Developed/patched version control software itself (git, svn, mercurial)
  • Developed software on mobile platforms (Android, iOS)
  • Successfully led small cross-domain development teams

Zetier is proud to be an Equal Opportunity Employer. We celebrate diversity and do not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other basis protected by law. All employment is decided on the basis of merit, qualifications, and business need.

About this role

Summary

Designs and develops advanced cyber command, control, persistence, and networking tools.

Job title

Principal CNO Software Engineer

Experience level

expert level

Minimum experience

5+ years exp

Industry

cybersecurity

Location requirements

On-site in State College, PA with flexibility for remote options.

Salary

Not specified

Management role

No

Skills & keywords

Required skills

C/C++PythonLinux/Windows kernel driversactive security clearance

Preferred skills

networking (802.11ac, Zigbee, GSM, SATCOM, SDN, UHF/VHF, 5g)POSIXWIN32 APIembedded platforms (uBoot, drone firmware, IOT)reverse engineering (gdb, Binary Ninja, IDA Pro)assembly reading (x86, x64, ARM)cryptography (AES-GCM, SHA256, ECDSA)version control (git, svn, mercurial)mobile platforms (Android, iOS)team leadership

Specializations

low-level programmingsystem developmentnetworkingcryptographyembedded platforms
Locations

Structured locations inferred from the posting.

State College, PA, USA

Hybrid City