Principal Software Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal Software Engineer based in United Kingdom.

As a Principal Software Engineer, you will help build the next generation of browser-based security features used by millions of people worldwide. You will join a distributed, collaborative engineering team focused on protecting consumers from online threats while keeping the user experience simple and intuitive. The role combines hands-on software development with technical leadership, architecture, mentoring, and cross-functional collaboration. You will work closely with Product, UX, and QA teams to deliver ambitious initiatives with high standards for quality and performance. You will also design integrations across complex systems and contribute to engineering practices that enable scalable, reliable products. With significant autonomy and a strong culture of trust, this role offers the opportunity to make a meaningful impact on digital safety at global scale.