Software Engineer - Windows Internals - Fully Remote

Westlight AI

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94306, CA Until 8/23/2026 3+ years exp First posted May 24, 2025 Last posted May 24, 2025
Job description

Job Summary

At Westlight, we build products that help companies and governments to provide an extra layer of security for their infrastructure. We work with the internals of different operating systems to provide a framework that brings a completely new level of security and control.

We are looking for a Windows software engineer who has enough autonomy to lead the implementation of features related to kernel-mode drivers and integrate those features with other I/O subsystems. The ideal candidate will have prior experience writing Windows security software, e.g. anti-malware scanners or other low-level software.

This position offers significant opportunities for career development. Westlight’s core team comprises of Stanford and MIT PhDs with expertise in AI, cybersecurity, CI/CD, and large-scale software systems. In this position, one will have opportunities to expand into these areas based on interest and expertise developed while working at Westlight.

Westlight is a fully remote company and this position can be held anywhere in the US. Since we work closely with the US Air Force, we require all applicants to be US Citizens and located in the US.

What we are looking for

  • Strong skills in Windows / C# desktop development
  • Comprehensive understanding of C and low-level memory management
  • Advanced use of debugging tools, e.g. WinDbg, KD, CDB, NTSD
  • Prior experience with Windows security software development, e.g. anti-malware scanners
  • Intermediate knowledge on networking fundamentals (TCP/IP, UDP, and common application protocols, e.g. HTTP, SSH, etc.)
  • Basic knowledge on Public-key cryptography fundamentals
    • Beginner knowledge on elliptic curve cryptography is a plus
  • Strong interpersonal skills and someone who thrives in a cooperative team environment

Technologies

  • Operating Systems: Windows 10 and Server
  • Programming languages: C#, C++, and C
    • Knowledge of Ruby on Rails and AWS also will be helpful
  • CI/CD Tools: Gitlab CI

Responsibilities

As a Software Engineer, you will work on Westlight product development:

  • Develop Westlight Windows kernel-level software
  • Integrate kernel-level software with other subsystems, such as I/O
  • Work together with the company leadership to define the Westlight Windows experience

About this role

Summary

Develop and integrate Windows kernel-level security software and drivers.

Job title

Software Engineer - Windows Internals

Experience level

mid level

Minimum experience

3+ years exp

Industry

cybersecurity

Location requirements

Fully remote, US-based candidates only.

Salary

Not specified

Management role

No

Skills & keywords

Required skills

C#C++Cdebugging toolsWindows security software

Preferred skills

networking fundamentalscryptographyelliptic curve cryptographyRuby on RailsAWS

Specializations

Windowskernel-mode driverssecurity softwarelow-level programmingcybersecurity
Locations

Structured locations inferred from the posting.

California, USA

Remote State