Senior Developer (Windows), Product Security

1Password is growing. We’ve surpassed $400M in ARR and we’re continuing to accelerate, earning a spot on the Forbes Cloud 100 for four years in a row and teaming up with iconic partners like Oracle Red Bull Racing.

About 1Password

At 1Password, we’re building the foundation for a safe, productive digital future. Our mission is to unleash employee productivity without compromising security by ensuring every identity is authentic, every application sign-in is secure, and every device is trusted. We innovated the market-leading enterprise password manager and pioneered Unified Access Management, a new cybersecurity category built for the way people and AI agents work today. As one of the most loved brands in cybersecurity, we take a human-centric approach in everything from product strategy to user experience. Over 180,000 businesses, from Fortune 100 leaders to the world’s most innovative AI companies, trust 1Password to help their teams securely adopt the SaaS and AI tools they need to do their best work.

If you're excited about the opportunity to contribute to the digital safety of millions, to work alongside a team of curious, driven individuals, and to solve hard problems in a fast-paced, dynamic environment, then we want to hear from you. Come join us and help shape a safer, simpler digital future.

Security and data privacy are at the core of everything we do at 1Password. The Product Security Team is responsible for implementing new security features across our macOS, iOS, Android, Windows, Linux and Web applications as well as building libraries to share common security-critical code, resolving security vulnerabilities across our applications, and promoting secure coding practices across the organization.

As a Senior Developer on our Device Security squad, you will play a key role in implementing the next generation of security features in our applications, and help shape our security operations and best practices. You'll be intimately involved in ensuring secure coding practices across our code-base, guiding product teams on best practices, resolving security vulnerabilities in our products when they arise, and demonstrating leadership in the area of secure coding and development.

How we’re using AI today

Our Engineering, Product, and Design teams are thoughtfully integrating AI across the full software and product development lifecycle to move faster without sacrificing quality or security. In practice, that looks like engineers using AI-assisted coding tools to accelerate reviews and catch bugs earlier, product managers synthesizing user research at scale, and designers rapidly prototyping and iterating with AI-generated mockups. We approach AI the same way we approach security: with clear principles, human accountability at every consequential decision point, and rigorous evaluation before anything ships to customers.

This is a remote opportunity within Canada and the US.

What we're looking for:

4+ years of experience in software development with a security angle; development experience with modern encryption techniques and libraries or authentication protocols

4+ years of hands-on experience with Windows security development with technical expertise in languages such as Rust, C#, C/C++, Go or TypeScript

Experience with Rust development and creating FFI interfaces, especially for Windows. Knowledge of Windows OS architecture and platform-specific optimization techniques

Familiarity with TPM and HSM functionality with proven experience in Windows security features such as Windows Hello, BitLocker, Secure Boot, and Credential Guard

A strong understanding of and passion for the security domain; that could include understanding of topics in the sub-domains of cryptography, network security, application security, common threat vectors, and access control mechanisms etc.

Excellent written and verbal communication skills; our security team often communicates nuanced topics to a variety of internal audiences, and has to understand these nuances during the design phase

You’re a self starter with strong organizational skills who enjoys solving moderately complex problems with a demonstrated ability to tackle problems and propose effective solutions

Knowledge of and practical experience with Agentic AI Model capabilities and workflows

Bonus points:

Experience with SAML, OAuth and OpenID Connect

Experience working on a SaaS product

Leadership experience as a software developer in a team environment

Experience with GitHub or GitLab as well as CI/CD pipelines

Experience with system analysis and performance monitoring tools such as DataDog, SemGrep, Sonarqube, Fortify etc.