Senior CNO Developer
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Before you apply
LocationSt. Petersburg, FL
Work modeon-site
Typefull-time
SenioritySenior
DepartmentCyber, CNO Developer
Company size12+ people
PostedApr 24, 2026 · 6mo ago
Verified live21h ago
May no longer be actively hiring
Posted by the company on Apr 24, 202646% of this company's open roles have been listed for 90+ days
At a glanceSummarised by Seekless from the posting.
Active US Top Secret security clearance, and ability to upgrade to TS/SCI
Significant experience programming in C and Python
Direct experience developing CNO or exploit capabilities
Embedded or firmware development experience on resource-constrained systems
Experience developing in Windows applications using Visual Studio or .NET environments
Experience developing in UNIX applications using make files or comparable build environments
Familiarity with software version control tools (e.g., Git, Subversion, or CVS)
Familiarity with CI/CD pipeline concepts and tools (e.g., Jenkins, GitLab, or Bamboo)
Experience using software debugging/troubleshooting tools and techniques
Software Analysis/Reverse Engineering experience
Comfort writing assembly or mixed C/ASM when the problem demands it
Excellent oral, written, and interpersonal skills, and ability to effectively interact with customers
Mentored and coached other engineers or fulfilled the role of Tech Lead
Experience working across OSI layers, including packet-level analysis and manipulation
Skills
C
Python
Visual Studio
.NET
Git
Subversion
CVS
Jenkins
GitLab
Bamboo
Windows
Linux
Unix
Benefits
Health insurance
Paid time off
401(k)
Paid parental leave
Wellness programs
Flexible work schedules
Position Title: Senior Security Researcher Location: St. Petersburg, FL | Melbourne, FL Clearance Requirement: Top Secret/SCI Employment type: Full Time
About the company
Research Innovations Inc. (RII) is redefining defense technology. We combine mission-driven impact with cutting-edge research and a culture that values autonomy, creativity, and technical excellence.
About the role
We are looking for a committed CNO Developer to join our Cyber security team. You will solve uniquely challenging problems for our Defense and Homeland Security customers. Get s#it done.
This position requires an Active US Top Secret security clearance, and the ability to upgrade to TS/SCI Special Access Program access
WHAT YOU WILL BE DOING
•
Build offense-grade software that operates in denied, constrained, and adversarial environments
•
Design, implement, and debug custom CNO capabilities across userland, kernel, and network layers
•
Tear down, modernize, and re-engineer legacy and acquired tooling for performance, stealth, and maintainability
•
Develop software that runs where defenders don’t want it (Windows, Linux/Unix, embedded, mobile, and network devices)
•
Perform deep binary analysis and reverse engineering across architectures and calling conventions
•
Own and evolve reproducible build systems, toolchains, and test harnesses
•
Work close to the metal: compilers, loaders, memory, execution flow, and runtime behavior
•
Travel as determined by the customer
WHAT YOU HAVE DONE
•
Significant experience programming in C and Python
•
Direct experience developing CNO or exploit capabilities
•
Embedded or firmware development experience on resource-constrained systems
•
Experience developing in one (1) or more of the following:
•
Windows applications using Visual Studio or .NET environments
•
UNIX applications using make files or comparable build environments
•
Familiarity with software version control tools (e.g., Git, Subversion, or CVS)
•
Familiarity with CI/CD pipeline concepts and tools (e.g., Jenkins, GitLab, or Bamboo)
•
Experience using software debugging/troubleshooting tools and techniques
•
Software Analysis/Reverse Engineering experience
•
Comfort writing assembly or mixed C/ASM when the problem demands it
•
Excellent oral, written, and interpersonal skills, as well as the ability to effectively interact with customers
EVEN BETTER
•
Mentored and coached other engineers or fulfilled the role of Tech Lead
•
Experience working across OSI layers, including packet-level analysis and manipulation
REFERRALS
Know someone who would make a great Senior CNO Developer? Refer them at www.researchinnovations.com/external-referrals!
At RII, we believe that diversity in our workforce is critical to our success. We strive to hire great people from a wide variety of backgrounds, not just because it’s the right thing to do, but because it makes us stronger. We work to help your intellectual passions and creativity thrive. It’s one of our core values: Let your geek flag fly.
Benefits
We also offer all employees comprehensive benefits including: flexible work schedules, health insurance coverage, paid time off, 401k with a company match, paid parental leave, access to wellness programs and much more. You get this all from day one, and all paid for by RII.
It’s all part of another of our core values: Stay human. It’s why our comfortable and colorful offices such as our headquarters, include a community game room, pantry, massage chair, and an escape room, among other amenities. It’s why we have community ambassadors and regular community events.
Legal
Research Innovations, Inc. is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender, gender identity or expression, national origin, genetics, disability status, protected veteran status, age, or any other characteristic protected by state, federal or local law.