Senior Cyber Software Engineer — Windows & C2 Tools

Prismhr Hire; San Antonio (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

Prismhr Hire in San Antonio, TX, is seeking a Senior Software Engineer/Developer to design, develop, and field advanced cyber tools for Windows environments, spanning offensive, defensive, and C2 capabilities in support of Air Force cyberspace operations. You’ll work on Windows drivers, DLLs, services, and OS internals with emphasis on stealth and reliability.

The role requires strong C/C++ skills, knowledge of Windows internals, and experience with reverse engineering and exploit development.

Qualifications

• Four years of recent system/software engineering experience with strong understanding of software architecture.
• Experience designing, developing, integrating, testing, and developing cyberspace capabilities/software solutions.
• Experience with Windows-based command line and script development.
• Experience with Bash and Python.
• Experience with exploit development.
• Deep understanding of C and operating system internals (Windows or Unix-like).
• Experience with Win32 API.
• Excellent written and verbal communication skills.
• Ability to convey technical ideas in a clear, logical fashion and translate highly technical data into actionable requirements.
• Experience with C# and PowerShell and deep understanding of C.

Responsibilities

• Design, develop, and maintain advanced cyber tools for Windows environments, focusing on offensive, defensive, and situational awareness capabilities.
• Engineer low-level Windows components (drivers, DLLs, services) to support stealthy tool deployment, system interaction, and evasion techniques.
• Reverse-engineer Windows internals and third-party software to identify vulnerabilities, develop exploits, or enhance tool effectiveness.
• Develop and maintain capabilities in C/C++, Rust, and/or Assembly for maximum performance, stealth, and control in target Windows environments.
• Conduct in-depth research into Windows OS internals, including kernel-mode operations, APIs, security features, and evasion techniques.
• Integrate tools with command-and-control (C2) frameworks, ensuring reliability, encryption, and secure communications across various operational environments.
• Lead the development of detection-resistant payloads, implant frameworks, and post-exploitation modules tailored to specific mission requirements.
• Collaborate with red teams, blue teams, and threat emulation groups to validate tool effectiveness and stealth against modern EDR and antivirus systems.
• Implement obfuscation, encryption, and code-packing strategies to enhance operational security (OPSEC) and avoid detection during engagements.
• Provide technical mentorship and code reviews to junior developers; enforce secure coding practices and development standards.
• Stay current on evolving cyber threats, zero-day exploits, and Windows platform updates to ensure toolsets remain effective and relevant.
• Develop automated testing, CI/CD pipelines, and operational deployment scripts to support rapid capability integration and mission readiness.

Skills

Windows scripting

Bash

Python

C/C++

C#

PowerShell

Exploit development

Reverse engineering

Win32 API

Tools

Windbg

Ghidra

IDA

Windows Kernel drivers

Job description

Prismhr Hire in San Antonio, TX, is seeking a Senior Software Engineer/Developer to design, develop, and field advanced cyber tools for Windows environments, spanning offensive, defensive, and C2 capabilities in support of Air Force cyberspace operations. You’ll work on Windows drivers, DLLs, services, and OS internals with emphasis on stealth and reliability.

The role requires strong C/C++ skills, knowledge of Windows internals, and experience with reverse engineering and exploit development.