Principal Software Engineer - Browser Guard

Here at Malwarebytes, we believe that when you’re free from threats, you’re free to thrive. It all started in 2008 with one person who needed help with a malware infection, and a community coming together to find solutions. In that moment in time a product was born for all people, with a mission to rid the world of malware. Our product has since grown and evolved, from removing malware, to protecting devices, to ever-changing prevention.

Malwarebytes is looking for an experienced Principal Software Engineer to join our Browser Guard engineering team. You'll help build and evolve an award-winning browser extension used by over 15 million weekly active users, delivering innovative security features that protect millions of consumers worldwide. This role will have the autonomy to drive technical decisions and work closely with Product, UX, QA, and Engineering teams to build high-impact features used by millions of customers.

• Build and deliver next-generation security features for the Browser Guard engineering team
• Design and develop integrations across Malwarebytes products and systems
• Solve complex technical challenges by applying strong knowledge of system design, algorithms and data structures
• Write clean, scalable, and high-quality code using modern engineering practices
• Collaborate across Engineering, Product, UX, and QA to deliver roadmap initiatives
• Mentor engineers through technical guidance, code reviews, and best practices
• Drive architecture and technical direction
• Leverage AI-powered development tools and workflows to improve engineering productivity

• Proven experience building product based scalable applications with React, TypeScript, and Go
• Strong understanding of data structures, algorithms, and software design patterns
• Experience architecting and scaling products used by millions of users
• Hands-on experience with AI-assisted development workflows while maintaining high code quality
• Strong focus on code quality, testing, debugging, and maintainability
• Experience with Git, code reviews, and modern software development practices
• Excellent communication skills with the ability to mentor and collaborate across teams
• Strong ownership mindset with the ability to solve complex technical challenges independently

• Private Health Insurance - Comprehensive medical, dental, and vision insurance coverage, subject to change by country/region
• Wellness programs
• Winter break between Christmas and New Year
• A great work environment that supports growth, development, and well-being