Windows Platform Architect - Remote, USA

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

Benefits offered by this job

Medical/Dental/Vision

401k with match (US)

Time Off policy

Employee Referral Bonus

Wellness programs

Job summary

Malwarebytes is seeking a Windows Platform Architect to shape the core of our Windows product. This hands-on senior technical role leads design from kernel drivers to user-mode services, ensuring safety, stability, speed, and lightness across millions of PCs.

You will collaborate across US and Europe teams, and drive low-level improvements. Ideal candidates bring 10+ years of software development with Windows internals, kernel driver experience, and strong C/C++ skills.

Qualifications

• 10+ years building software with deep focus on Windows internals.
• Hands-on kernel driver work: minifilters, kernel callbacks, Windows driver model.
• Strong C and C++ skills; experience with C# and .NET performance.

Responsibilities

• Own the design of core Windows components, from kernel drivers to user-mode services.
• Make the product fast and light: reduce CPU, memory, 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 (certificate, signing, or false positives).
• Review new Windows features and APIs and decide usage approach.
• Collaborate with Research to apply protections at OS level.
• Mentor engineers on Windows internals and design best practices.
• Deliver clear memory/CPU gains across the Windows product.
• Lead design of at least one major driver or core component change.

Skills

Windows internals

Kernel drivers

C/C++

C# / .NET

Performance debugging

System stability

Technical communication

Tools

WinDbg

ETW

PerfView

WPA

Job description

Malwarebytes is reimagining security to safeguard devices, data, and people — no matter their location, lifestyle, or means. What began in 2008 with one person helping another remove a malware infection has grown into a global leader in online protection, with an all-in-one suite of cybersecurity, privacy, and identity protection solutions that empower millions of people worldwide to enjoy their digital lives, free from threats and scams.

About Malwarebytes Inc.

Our portfolio has grown far beyond malware removal into a full suite of award-winning cybersecurity, privacy, and identity solutions, from the free tools that have long served as a first line of defense to newer options for identity protection and personal data removal. The threat landscape keeps getting faster, stealthier, and more sophisticated, and we believe protection should be both powerful and refreshingly simple — because security that's too hard to use doesn't get used. Built and beloved by experts, we combine world-class threat research with proprietary, AI-powered processes to deliver powerful digital protection that's always by your side.

Malwarebytes is looking for…

Malwarebytes protects millions of people and businesses from online threats. We are looking for a Windows Platform Architect with deep knowledge of Windows internals and performance to shape the core of our Windows product. This is a hands‑on senior technical role, not a people manager role. You will design and build the low‑level parts of our product that run on millions of PCs, and make sure they are safe, stable, fast, and light. You will be the senior Windows technical lead in the US, working with our Windows and Core Technology teams in the US and Europe, as well as Research, Cloud, and Product.

Compensation:

$240k - $250k Base with 15% Bonus

What You Will Do

• 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 You’ll Need To Have

• 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
• A track record of solving hard problems and shipping production software
• Clear writing and speaking, and a habit of sharing knowledge with others

Nice To Have

• Experience with security products such as antivirus or endpoint protection
• Knowledge of ELAM, Protected Process Light, or other Windows security features
• Experience with driver certification (HLK, WHQL, attestation signing)
• Experience with cloud to endpoint telemetry

Perks & Benefit

• Comprehensive medical, dental, and vision insurance coverage
• Employee Referral Bonus Program
• Wellness programs
• 401k and employer matching for (US Employees)
• Comprehensive Time Off policy
• An opportunity to do something great for yourself and the world!

(Benefits and Perks subject to change by country/region)

Legal Language

(US Employees Only)

Applicants Have Rights Under The Federal Employment Laws

• Employee Polygraph Protection Act
• Know Your Rights: Discrimination is Illegal
• Family and Medical Leave Act (FMLA)

This is to affirm our policy of providing equal employment opportunities to all employees and applicants for employment in accordance with all applicable laws and regulations. Our company will not discriminate against or harass any employee or applicant for employment because of race, color, creed, religion, national origin, sex, sexual orientation, gender identity, disability, age, marital status, familial status, membership or activity in a local human rights commission, or status regarding public assistance. We will ensure that all our employment practices are free of discrimination. Such employment practices include, but are not limited to, the following: hiring, upgrading, demotion, transfer, recruitment or recruitment advertising, selection, layoff, disciplinary action, termination, rates of pay or other forms of compensation, and selection for training, including apprenticeship. We will provide reasonable accommodation to applicants and employees with disabilities whenever possible.