Senior Software Engineer (Auth) - Bitwarden

About Bitwarden

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.

The Role

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.

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 is 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 with the technology
• Strong technical writing skills and the ability to clearly communicate complex problems
• Attention to detail and a strong commitment to secure user authentication
• Knowledge of modern encryption techniques and principles of secure development are a plus
• Collaborative, adaptable, open, and authentic mindset with excellent communication skills
• Excitement and enthusiasm for open source and for better internet security
• Excellent problem-solving skills

What to Expect in the Interview Process

1. Meeting with our Recruiting Manager
2. Interview with Auth team Engineering Manager and Platform Group Manager
3. Panel interview with Auth team

Why Work With Us

• Purpose-driven work: Help bring a more secure internet experience to everyone from friends and family to the world’s largest organizations.
• Become an expert: Immerse yourself in the prominent technology markets of security and open-source software.
• Remote-first culture: Work remotely with motivated and supportive team members across the world.
• Continuous growth: Take on new challenges and join our #growth-club for personal and professional development.

Compensation

In the United States, the starting base compensation range for this role is $140,000 - $200,000. Actual compensation may vary based on level, relevant experience, and skill set as assessed in the interview process, as well as market data by location.