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Infographic showing various Senior Applications Developer job openings at Research Innovations in the United States as of August 2026, with employment types broken down into 100% Full Time. Highlights an 90% Physical, and 10% Hybrid job distribution.

Senior CNO Developer

Research Innovations

Saint Petersburg, FL • On-site

$90K - $124K/yr

Full-time

Medical, Retirement, PTO

Re-posted 13 days ago

Job description

Position Title: Senior Security Researcher
Location: St. Petersburg, FL | Melbourne, FL
Clearance Requirement: Top Secret/SCI
Employment type: Full Time
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.
 
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.
 
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.
 
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.
#LI-AC1
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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