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…
Our team is looking for a collaborative, motivated, and inspiring individual to join our Browser Guard engineering team as a Principal Software Engineer. Browser Guard is an award-winning browser extension with over 15 million weekly active users. We are looking for someone who is team‑oriented, always learning, has a "can‑do" attitude and is performance‑minded. The adecuado candidate should be one who takes ownership and is always looking for ways to improve our products. Being a distributed team,



we believe in strong autonomy and trust in our engineers.
What You Will Do
Develop next generation features to protect our consumers
Write amazing code, using best practices and the latest technologies
Ensure you deliver quality code by writing design documents and unit tests
Collaborate with Product, UX and QA to deliver an ambitious roadmap on time and with high quality
Design and develop key integrations between Malwarebytes's systems and products
Support your fellow team members: mentor, proactively communicate & code review
Work as a team to ensure everyone meets their goals
Skills You'll Need To Have
Strong understanding of data structures, algorithms, and common design patterns
React, JavaScript (TypeScript), and Go chops
Experience architecting projects used by millions of clients
AI workflows without quality degradation
Experience working with Git
Experience in regular code reviews, giving and receiving professional feedback
UX and user‑centric mindset
You have an instinct for writing tests
You manage your tasks very well and do an excellent job of estimating work
Excellent debugging and troubleshooting skills
Excellent communication and learning skills
Positive team attitude
Perks & Benefits
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 - 4 extra days in 2026
A great work environment that supports growth, development, and well‑being
An opportunity to do something great for yourself and the world
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📌 Principal Software Engineer (España)
🏢 Malwarebytes
📍 España