Senior Developer, Open Source

About this role

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.

We are seeking a Senior Developer on our Open Source Team, focused on strengthening 1Password's open source posture and making our developer tools easy to use directly inside developers' workflows through agentic IDE integrations: our Agent Hooks and IDE plugins. You'll serve as a technical leader on the team, owning architectural decisions and driving cohesive execution on medium-to-large projects, from initial planning through development and into customer support.

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:

- Significant professional software development experience, with a track record of independently owning and delivering medium-to-large technical projects end to end.

- Advanced, hands-on command of a modern development toolchain (Git, IDEs, terminal, debugging and testing tools) and the languages relevant to the team's work; comfortable reading, writing, and reviewing others' code.

- Experience designing extensible, maintainable systems, ideally developer tooling, IDE extensions, agent integrations, or actively maintained open source projects.

- Demonstrated ability to set technical direction and make architectural decisions that keep products scalable, secure, and high quality.

- A track record of working effectively in public, engaging with external contributors and upholding a high quality bar in community-facing repositories.

- Interest in agent-assisted development and building tools to make agent-assisted development smoother and more secure.

- Excellent written and verbal communication skills, with the ability to make a project's impact and progress visible to engineering, product, and design stakeholders.

- A security-minded approach consistent with 1Password's principles.

Bonus points for:

- Experience maintaining a popular open source project or running open source community engagement.

- Familiarity with AI-enabled or agentic IDEs (e.g., Cursor) and the emerging agent-hook ecosystem.

- Experience contributing to an Open Source Program Office (OSPO) or similar function.

What you can expect:

- Contribute large new features, significant product improvements, and critical bug fixes, such as extending our Agent Hooks across IDEs or building genuine in-IDE value beyond links to external docs.

- Make architectural decisions that keep our integrations and public repositories scalable, secure, and aligned to 1Password's existing security and authentication models.

- Contribute to the team's roadmap by identifying technical opportunities and risks up to ~6 months out, then lead execution aligned to team objectives.

- Raise the quality bar by identifying lapses in code quality and gaps in testing coverage, anticipating and reporting potential problems, and fostering a high standard of documentation across community-facing repositories.

- Ensure alignment with cross-functional partners (Partnerships, Product, UX, and the SDK/CLI teams), translating requirements into actionable work.

- Drive initiatives that better support 1Password customers on your platform and mitigate issues developers face.

- Contribute to a positive, collaborative team environment by modeling best practices, providing constructive feedback, and supporting a sense of shared ownership.

USA-based roles only: The annual base salary for this role is between $153,000 USD and $214,000 USD, plus immediate participation in 1Password's benefits program (health, dental, 401k and many others), utilization of our generous paid time off, an equity grant and, where applicable, participation in our incentive programs.

Canada-based roles only: The annual base salary for this role is between $144,000 CAD and $202,000 CAD, plus immediate participation in 1Password’s generous benefits program (health, dental, RRSP and many others), utilization of our generous paid time off, an equity grant and, where applicable, participation in our incentive programs.

At 1Password, we approach each individu

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