Senior Developer (Windows), Product Security (Worldwide Remote)

Are you an experienced Windows developer with a passion for cybersecurity, ready to make a tangible impact on the digital safety of millions? Imagine contributing to a product that helps individuals and businesses worldwide keep their most sensitive information secure, all while working from anywhere on the planet. At 1Password, we're not just building software; we're crafting the foundation for a more secure digital future, and our Product Security team is at the very heart of that mission. If you thrive on solving complex problems, love diving deep into Windows internals, and are eager to safeguard users against evolving threats, then this senior role could be your next exciting challenge.

Overview

1Password stands as a leader in enterprise password management and a pioneer in Unified Access Management. We empower over 180,000 businesses, from Fortune 100 giants to cutting-edge AI startups, enabling their teams to adopt SaaS and AI tools securely. Our growth is remarkable, exceeding $400M in ARR and earning consistent recognition on the Forbes Cloud 100. This is a fully remote, worldwide opportunity. As a Senior Developer on our Product Security team, you will play a crucial role in enhancing the security posture of our Windows applications, ensuring our users continue to trust 1Password with their most vital digital assets.

Key Responsibilities

Designing, developing, and maintaining robust security features for 1Password's Windows applications.
Conducting security reviews of existing code and new features, identifying and mitigating potential vulnerabilities.
Collaborating closely with product, design, and other engineering teams to integrate security best practices throughout the development lifecycle.
Implementing and improving security controls within the Windows operating system context, utilizing APIs and system-level programming.
Investigating and responding to security incidents and emerging threats relevant to Windows environments.
Mentoring junior developers and promoting a culture of security awareness across the engineering organization.
Staying up-to-date with the latest cybersecurity threats, attack techniques, and defense mechanisms, particularly in the Windows ecosystem.

Requirements

Extensive professional experience in software development, with a strong focus on Windows platforms.
Deep expertise in C# and .NET, with a solid understanding of C++ for interacting with Windows APIs.
Proven experience developing secure applications and understanding common web and desktop application vulnerabilities.
Strong knowledge of Windows operating system internals, security features, and APIs (e.g., CryptoAPI, DPAPI, LSA, Windows Defender APIs, UAC, integrity levels).
Experience with secure coding practices, threat modeling, and security testing methodologies.
Familiarity with cryptography, secure communication protocols, and identity management concepts.
Excellent problem-solving skills and the ability to work independently in a remote, distributed team environment.
Exceptional communication skills, both written and verbal, for technical and non-technical audiences.

What You'll Gain

The chance to work on a product that genuinely helps millions of people and businesses secure their digital lives.
A collaborative and supportive remote-first work environment with colleagues from around the globe.
Opportunities for continuous learning and professional development in the cutting-edge field of cybersecurity.
Be part of a rapidly growing, financially stable company with a strong commitment to its users and employees.
Direct impact on the security architecture and implementation of critical features.
A comprehensive benefits package designed to support your well-being, wherever you are.