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Vulnerability Researcher​/CNO Developer; Onsite Security Clearance

Job in San Antonio, Bexar County, Texas, 78208, USA
Listing for: Nightwing
Full Time position
Listed on 2026-03-11
Job specializations:
  • Security
    Cybersecurity
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: Vulnerability Researcher/CNO Developer (Onsite) with Security Clearance

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers’ most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in the intelligence community, defense, civil, and commercial markets.

Vulnerability Researchers at Night Wing CODEX analyze systems to understand how they work and how they behave when they break. Candidates must be able to play both sides of the fence, both developing and defeating new and advanced security techniques. Projects are undertaken in small teams with close coordination with customers. All our engineers write code, but many of our engineers spend as much time taking systems apart as building new ones.

A typical day can involve studying disassembly or writing Python to audit a piece of C++ code.

Required Skills
  • TS/SCI Clearance Required
  • Experience with C or C++
Desired Skills
  • Understanding of OS Internals (any major OS)
  • Experience reading or writing assembly (x86, x64, ARM, PPC, MIPS, SPARC, 68k, or others)
  • Experience developing embedded systems
  • Understanding of network protocols (TCP/IP stacks, wire-level protocols, RF communications, BGP, routing protocols, or others)
  • Understanding of exploit mitigations such as DEP and ASLR
  • Experience using reverse engineering tools such as IDA Pro, Hex Rays, Ghidra, Binary Ninja, or objdump
  • Experience using debuggers such as gdb, Win Dbg, Olly Dbg
  • Experience building and using tools to find, exploit, and productize vulnerabilities in complex software systems
Security Clearance

Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to classified information. U.S. Citizenship is required. Qualified applicants must obtain and maintain a government security clearance.

Education

BS/MS in technical discipline or equivalent work experience will be considered.

Employee Referral Award Eligibility

This requisition is eligible for an employee referral award. All eligibility requirements must be met to receive the referral award.

Equal Opportunity

Nightwing is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.

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