Windows Internals Engineer

Level

Senior

Department

С/С++

Type

Full Time

Project

NDA

Locations:

Eastern Europe

Ukraine

Job Details

Posted on:

June 10, 2026

Job ID:

About the Company

Established in 2004, ALLSTARSIT was founded with a clear vision: to enhance the landscape of global IT employment by bridging the gap between companies and skilled professionals. The core belief was that assembling a team shouldn't be hindered by geographical constraints. Fast forward to the present day, ALLSTARSIT stands as an international outstaffing service provider committed to change the way businesses recruit, compensate, and oversee top talent worldwide.

With operational hubs scattered across Europe, Asia, and LATAM, and its headquarters situated in San Francisco, US, the company boasts a workforce of over 1,000 adept professionals. Spanning across more than 20 countries, ALLSTARSIT offers a diverse range of skilled employees across various verticals, including AI, cybersecurity, healthcare, fintech, telecom, media, and so on.

About the Project

Our client is the trusted global leader in prevention-first Anti-Ransomware protection, redefining cybersecurity with our industry-leading Automated Moving Target Defense (AMTD) technology. We are seeking a highly skilled and experienced Windows Internals Engineer with a strong background in low-level programming and a deep understanding of Windows internals to join the team.

Specialization

Headquarters

Years on the market

Team size and structure

Current technology stack

Required skills:

Requirements

More than 6 years of experience in software development with strong expertise in C++.
Experience with Windows API, and multithreading.
Strong analytical and problem-solving skills with a passion for security.
Experience working on large-scale, high-performance systems with complex
requirements.
Excellent communication skills and collaboration.
Using Common LLM tools to improve day-to-day throughput (e.g. Claude code)

Advantages

Knowledge of cybersecurity and the threat landscape.
Extensive understanding of LLM tools (e.g. agents, skills, etc.)
Familiarity with security concepts such as buffer overflows, race conditions, code
injection, and privilege escalation.
Deep understanding of Windows OS internals.
Modern C++.
Experience with Windows drivers, file systems, or network protocols.
Knowledge of reverse engineering, malware analysis, or exploit development.
.NET/C# experience

Scope of work:

Design, develop, and maintain end-to-end security modules in C/C++ that power endpoint protection.
Work with low-level Windows internals, including kernel mode and user mode development.
Lead the development of innovative security solutions that address complex real-world threats.
Investigate and resolve advanced security-related issues and vulnerabilities.
Collaborate closely with the product and research teams.
Stay up to date with emerging threats and vulnerability trends to enhance defense mechanisms.
Participate in code reviews, mentoring, and technical discussions to ensure high-quality engineering practices across the team.