Vulnerability Researcher / CNO Developer - San Antonio

Nightwing; San Antonio (TX); On-site; USD 108,000 - 148,000; Full time

Job summary

Nightwing CODEX in San Antonio, TX is seeking a security-focused software engineer with TS/SCI clearance and strong C/C++ skills to analyze systems, develop defense techniques, and collaborate with customers on challenging projects.

The role involves writing code, disassembling systems, and building tools for vulnerability research, with emphasis on Python and networked environments. Candidates should have a technical BS/MS and U.S. citizenship.

Qualifications

• BS/MS in a technical discipline or equivalent work experience.
• Experience with C or C++.
• U.S. citizens must meet requirements to obtain and maintain government security clearance.
• TS/SCI clearance required.
• Ability to work in small teams and coordinate with customers.

Responsibilities

• Analyze systems to understand how they work and how they behave when they break.
• Develop and defeat new and advanced security techniques.
• Work on projects in small teams and coordinate closely with customers.
• Write code, take systems apart, and build new systems.
• Study disassembly and write code, such as Python scripts, to audit C++ software.

Skills

TS/SCI clearance

C/C++

Security

Reverse engineering

Exploit tooling

Python

Education

BS/MS in a technical discipline

Tools

Python

C++

TCP/IP

ARM

Assembly

OS internals

Job description

Salary: $108,000 - 148,000 per year

Requirements

• We require a TS/SCI clearance.
• We require experience with C or C++.
• Were looking for experience in at least three of the desired skill areas listed below.
• Desired skills include knowledge of operating system internals; experience reading or writing assembly; embedded systems development; knowledge of network protocols; understanding of exploit mitigations such as DEP and ASLR; experience with reverse-engineering tools or debuggers; and experience building and using tools to find, exploit, and productize vulnerabilities in complex software systems.
• We require a BS/MS in a technical discipline or equivalent work experience.
• Applicants must be U.S. citizens and meet the requirements to obtain and maintain a government security clearance. Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to classified information.

Responsibilities

• Analyze systems to understand how they work and how they behave when they break.
• Develop and defeat new and advanced security techniques.
• Work on projects in small teams and coordinate closely with customers.
• Write code, take systems apart, and build new systems.
• Study disassembly and write code, such as Python scripts, to audit C++ software.

Technologies

• Embedded
• Support
• Network
• Python
• Security
• ARM
• C++
• TCP/IP

More

Were collaborating with hackajob to recruit for Nightwing, which provides technically advanced cyber, data operations, systems integration, and intelligence mission support to customers in intelligence, defense, civil, and commercial markets. Our capabilities include cyber operations and defense, vulnerability research, technical surveillance, data intelligence, mission enablement, and software modernization. We have supported U.S. government missions for more than four decades, and our teams value collaboration, innovation, and solving complex problems. This role is with Nightwing CODEX. The requisition is eligible for an employee referral award, subject to all eligibility requirements. We are an equal opportunity employer.

last updated 41 week of 2026