Windows Security

Windows Security Developer Jobs

3 jobs found

Today

Principal Software Developer (System Security)

Nightwing Intelligence Solutions, LLC Huntsville, AL

Huntsville, AL

Today

Full time Embedded Systems Embedded Systems Security Engineer

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Job Description

Nightwing Intelligence Solutions, LLC builds security products that deliver deep OS-level protections for Windows, Linux, and VxWorks. As a Principal Software Developer (System Security) onsite in Huntsville, AL, you will help strengthen mission-critical systems through OS security features, detection and response, and lockdown capabilities that reduce exposed attack surface.

Responsibilities

Develop and enhance OS-level security features that operate deep within the operating system
Build detection and response mechanisms to counter advanced persistent threats
Implement cryptographic binding of sensitive software to trusted hardware
Create system lockdown capabilities to minimize attack surface
Integrate with Hardware Root of Trust (HRoT) solutions
Support multi-OS platforms, including Windows, Linux, and VxWorks
Help protect against sophisticated attacks from well-funded adversaries
Learn kernel programming and driver development on the job with mentorship from senior engineers

Requirements

8+ years of professional software development experience in systems-level programming
Expert-level C/C++ with deep understanding of memory management, pointers, and low-level programming concepts
Strong experience in OS-level systems programming with evidence you understand how the OS works under the hood
Comfort debugging complex systems issues using tools such as gdb, WinDbg, Visual Studio Debugger, or similar
Git proficiency working in a team environment
Self-directed learning ability shown through independently mastering new technical domains
U.S. Citizenship required
Must meet requirements to obtain and maintain a Secret government security clearance
Education: University Degree or equivalent experience; or an Advanced Degree in a related field
Education experience alignment: University Degree or equivalent with minimum 8 years prior relevant experience, or Advanced Degree with minimum 5 years experience

Technologies you will work with

C/C++, x86_64, ARM, assembly language
Debugging: gdb, WinDbg, Visual Studio Debugger
Platforms and low-level components: Windows, Linux, VxWorks, kernel modules, device drivers, system services
Driver models and tooling: Linux Driver Model, WDM/WDF/WDK
Security and platform trust: cryptography, TPM, Secure Boot, UEFI, HRoT
Scripting for automation/testing: Python, Batch

What sets qualified candidates apart

Experience working close to the OS: kernel modules, device drivers, system services, OS internals, or security tools
Background in security-sensitive code such as anti-malware, EDR, security monitoring, or exploit mitigation
Strong grounding in operating system concepts including process/thread management, memory management, I/O systems, and interrupt handling
Assembly language experience for x86_64 and ARM, including reading and debugging at the instruction level
Experience with scripting languages like Python and Batch for automation and testing
Familiarity with security concepts including cryptography, threat modeling, and attack surfaces
Knowledge of boot processes, firmware, or hardware security such as TPM, Secure Boot, and UEFI
Understanding of Linux driver model and/or Windows driver models (WDM/WDF/WDK), even at a conceptual level

Why join this team

Work on technology protecting critical DoW weapon systems and platforms
Learn from senior engineers with 15+ years of experience in mission-critical system protection
Grow expertise in Linux/Windows internals, kernel development, and low-level security
Contribute to a multi-layer cyber resiliency portfolio spanning hardware, firmware, software, and network layers
See direct impact of your work on national security
Access cutting-edge tools, training, and technologies
Recognition for exceptional results

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Today

Windows Kernel Software Developer

ThreatLocker Inc Orlando, FL

Orlando, FL

Today

Full time Device Driver Development Device Drivers Endpoint Security

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Job Description

ThreatLocker is hiring a Windows Kernel Software Developer to design and maintain kernel-mode components for its Zero Trust security platform in Orlando, FL.

Responsibilities

Design and implement Windows kernel-mode filter drivers, including file system minifilters, registry filters, and network filters
Build security monitoring and enforcement for file, process, registry, and network activity
Investigate Windows internals to create low-level, bypass-resistant security features
Use kernel debugging and analysis workflows, including crash dump analysis and performance tuning
Develop secure, stable, and maintainable driver code
Maintain compatibility across supported Windows versions and platform changes
Collaborate with user-mode, QA, DevOps, and security engineering teams

Requirements

5+ years of hands-on experience developing Windows kernel-mode drivers
Experience developing Windows filter drivers
Strong knowledge of Windows system internals, including memory management, I/O, processes, and the object manager
Strong C/C++ development skills
Experience with the Windows Driver Kit (WDK)
Strong experience with kernel debugging and crash analysis
Experience with kernel synchronization, concurrency, and performance-sensitive code
Strong problem-solving skills with a security-first engineering mindset

Technologies

WinDbg
ETW
WPP
Windows Driver Kit (WDK)
C/C++

Preferred Qualifications

Experience with Windows file system minifilters and Filter Manager
Experience with Windows Filtering Platform (WFP)
Experience with registry filtering and process monitoring
Experience with endpoint security, EDR, anti-malware, application control, or Zero Trust products
Experience with WinDbg, Driver Verifier, ETW, and WPP tracing
Experience with reverse engineering or malware analysis
Familiarity with Windows kernel threat models and secure coding practices
Exposure to Microsoft driver signing, WHQL, HLK, and driver submission processes
Contributions to security research, open-source projects, publications, or technical talks

Working Conditions

In-office role in Orlando, Florida
Generally performed in an office environment; occasional travel may be required
Must occasionally lift and/or move up to 25 pounds
Background check and drug/substance screening required after a conditional offer; employment proceeds only with clear results
Randomized drug and substance testing approximately every 60 days, using the same screening standards

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1mo ago

Windows Software Engineer, Senior

Parsons Virginia

Virginia

1mo ago Closed

$112k - $196k/yr Full time Senior Engineering Microsoft Windows

This position is no longer accepting applications (closed Oct 19, 2026).

Job Description

Parsons is seeking a Senior Windows Software Engineer to deliver low-level Windows software for national defense cyber programs.

Responsibilities

Design and develop innovative software code for new tools and capabilities in computer security, vulnerability research, reverse engineering, and product development
Build and maintain low-level application and operating system projects related to software protection and host-based personal security tools
Review system architecture; select and implement development and support tools to maintain product performance
Test and debug developed software
Provide customer expertise to leverage existing software and create new capabilities
Participate in quick reaction development with customer interaction opportunities
Collaborate with a team focused on superior product development and member career growth
Act as a customer-focused self-starter who learns, mentors, and collaborates effectively in Agile teams

Requirements

Bachelor’s degree in Computer Science or related technical field; additional experience may suffice in lieu of degree
8+ years of Software Engineering experience
Proficiency in C/C++
Strong Windows foundation/knowledge (5+ years experience)
Experience with CNO Windows development (tools/implant or exploit development)
Experience with Windows VR/RE
Experience with Windows APIs (win32, Windows Native)
Experience with networking protocol analysis and socket programming on Windows
Familiarity with Git
Ability to generate accurate documentation for developed software
Ability to collaborate and communicate effectively with a remote team
U.S. Citizenship required with ability to obtain a TS/SCI

Technologies

C/C++
Python
Windows APIs (win32, Windows Native)
Git

Location and Travel

Location: Virginia (onsite)
Parsons is especially interested in Centreville, VA; Herndon, VA; Columbia, MD; Augusta, GA; or San Antonio, TX; remote candidates also considered
Quarterly travel is expected

Desired Skills You’ll Bring

Python proficiency
Experience supporting US Government CNO missions
Assembly programming and analysis (any major architecture)
Experience working with debuggers and disassemblers
Strong understanding of low-level operating system internals and drivers
Experience with kernel and userland debugging
Familiarity with modern development environments and practices including CI/CD
Active TS/SCI

Benefits

Medical, dental, vision
Paid time off
401(k)
Life insurance
Flexible work schedules
Holidays

Salary

USD 112,200 - 196,400 per year

Security Clearance Requirement

None

Posting Details

Posted for a minimum of 3 days
Continues to be posted for an average of 30 days until a qualified applicant is selected or the position is cancelled

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Windows Security Developer Jobs

Principal Software Developer (System Security)

Windows Kernel Software Developer

Windows Software Engineer, Senior

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