Senior Windows Platform Architect: Kernel & Performance

Malwarebytes; Michigan; On-site; USD 240,000 - 250,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Referral bonus

Wellness programs

401k with employer matching

Time Off policy

Meaningful work

Job summary

Malwarebytes is seeking a senior Windows Platform Architect to shape the core of our Windows product. You will design and implement low-level components, from kernel drivers to user-mode services, ensuring safe, stable, fast, and lightweight software running on millions of PCs.

This hands-on role requires deep Windows internals, strong C/C++ and C#/.NET performance know-how, and a track record of shipping production software.

Qualifications

• 10+ years building software with deep focus on Windows internals.
• Hands-on kernel driver work: file system minifilters, kernel callbacks, Windows driver model.
• Strong C and C++ skills; experience with C#/.NET performance.
• Experience with performance and debugging tools such as WinDbg, ETW, WPA, and PerfView.
• Experience shipping software that runs with high rights on many PCs where stability matters.
• Track record of solving hard problems and shipping production software.
• Clear writing and speaking, and a habit of sharing knowledge with others.

Responsibilities

• Own the design of core Windows components, from kernel drivers to user mode services.
• Make our product fast and light: reduce CPU and memory usage and startup time.
• Find and fix hard system issues using crash dumps, traces, and kernel debugging.
• Lead driver signing and certification work with Microsoft.
• Help resolve urgent issues during US hours, such as certificate/signing problems.
• Review new Windows features and APIs and decide how to use them.
• Collaborate with Research to bring new protections to the OS level.
• Use AI tools to speed up design, build, and test processes.
• Coach engineers on Windows internals and good design.
• Deliver clear gains in memory and CPU usage across the Windows product.
• Lead the design of at least one major driver or core component change.

Skills

Windows internals

Kernel drivers

C/C++

C# / .NET

WinDbg / ETW / WPA / PerfView

High-rights software

Problem solving

Communication skills

Tools

WinDbg

ETW

PerfView

WPA

Job description

Malwarebytes is seeking a senior Windows Platform Architect to shape the core of our Windows product. You will design and implement low-level components, from kernel drivers to user-mode services, ensuring safe, stable, fast, and lightweight software running on millions of PCs.

This hands-on role requires deep Windows internals, strong C/C++ and C#/.NET performance know-how, and a track record of shipping production software.