Senior Windows Platform Architect — Core OS & Performance

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

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Referral bonus

Wellness programs

401k with match

Job summary

Malwarebytes is seeking a Windows Platform Architect to shape the core Windows product. This hands-on role focuses on kernel drivers, user-mode services, and performance optimizations to run on millions of PCs.

You will lead critical driver work, collaboration with US/Europe teams, and use AI to accelerate development while ensuring safety, stability, and speed. The ideal candidate has 10+ years in Windows software, strong C/C++, and a track record of shipping high-rights software.

Qualifications

• 10+ years building software with deep focus on Windows internals.
• Hands-on kernel driver work: file system minifilters, kernel callbacks, and the Windows driver model.
• Strong C and C++ skills.
• Experience with C# and .NET performance, including startup time and memory use.
• Skill with performance and debugging tools such as WinDbg, ETW, WPA, and PerfView.
• Experience shipping software that runs with high rights on a large number of PCs, where stability matters most.

Responsibilities

• Own the design of core Windows components, from kernel drivers to user mode services.
• Make our product fast and light: cut CPU use, memory use, 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, or false positive problems.
• Review new Windows features and APIs and decide how we should use them.
• Work with Research to bring new protection features down to the OS level.
• Use AI tools to speed up how we design, build, and test.
• Coach engineers on Windows internals and good design.
• Deliver clear gains in memory and CPU use across our Windows product.
• Lead the design of at least one major driver or core component change.
• Become the go-to person for Windows platform issues during US hours.

Skills

Windows internals

Kernel driver work

C/C++

C# & .NET performance

Performance debugging

High-privilege software

Technical leadership

Job description

Malwarebytes is seeking a Windows Platform Architect to shape the core Windows product. This hands-on role focuses on kernel drivers, user-mode services, and performance optimizations to run on millions of PCs.

You will lead critical driver work, collaboration with US/Europe teams, and use AI to accelerate development while ensuring safety, stability, and speed. The ideal candidate has 10+ years in Windows software, strong C/C++, and a track record of shipping high-rights software.