Senior Software Engineer (Auth)

Bitwarden is the trusted identity security leader for millions of users worldwide, empowering enterprises, developers, and individuals to securely manage and share sensitive information anywhere. Bitwarden makes it easy for all users to extend robust security across their devices with password management, secrets management, and passwordless and passkey innovations. The company is headquartered in Santa Barbara, California with team members located across the globe. Learn more at bitwarden.com .

As a Senior II Software Engineer on our Auth team, you will be responsible for developing and maintaining the core authentication systems for the Bitwarden clients - web, desktop, browser extension, CLI, and mobile apps. The Auth team owns code in our Angular clients, our shared Rust core, and our IdentityServer and API back-end, supporting password, SSO, passkey, and other authentication methods, as well as our 2FA and account management. A candidate for this position should have very strong skills in Rust and Angular, working in complex and multi-client applications, as well as excellent communication and technical writing abilities.

We are a team of curious, passionate engineers who strive to solve difficult problems and enable success in others. If this sounds like you, we encourage you to apply.

This is an all-remote team and we’re looking for someone located in the U.S. We do not offer visa sponsorship at this time.

RESPONSIBILITIES

Build and maintain our authentication code in our shared Rust core library, Angular clients, and IdentityServer back-end

Scope and refine upcoming initiatives, working collaboratively across teams to design, document, and communicate forward-looking solutions

Contribute constructively in team discussions - synchronous and asynchronous - building shared understanding and driving toward actionable results

Provide timely, thorough, and well-reasoned code reviews

Triage, diagnose, and resolve bugs reported by our community and our customers

Update and validate core dependencies to ensure a secure and stable supply chain

WHAT YOU BRING TO BITWARDEN

Extensive experience developing in Angular/.NET experience a strong plus

Familiarity with integrating Rust into other clients using WASM and UNIFFI bindings

Understanding of modern web authentication concepts (OAuth 2.0, OIDC, WebAuthn)

Experience working with Claude/LLMs or an openness to learn how to work the technology

Strong technical writing skills and the ability to clearly communicate complex problems

Attention to detail; we take our responsibility for authenticating our users very seriously

Knowledge of modern encryption techniques and principles of secure development are a plus

Collaborative and adaptable mindset

Openness and authenticity combined with excellent communication skills

Excitement and enthusiasm for open source and for better internet security

Excellent problem-solving skills – you might not know all the answers, but you know how to find and communicate the solution

WHAT TO EXPECT IN THE INTERVIEW PROCESS