Senior Software Engineer II (Auth)

your Jared; Northern (KY); Hybrid; USD 180,000 - 215,000; Full time

Job summary

Bitwarden is seeking a Senior Software Engineer II (Auth) to own core authentication across web, desktop, browser extension, CLI, and mobile apps. You’ll work with Angular clients, the Rust core, IdentityServer and API back-end, implementing password, SSO, passkeys, and 2FA, with a strong emphasis on secure, scalable authentication.

This fully remote role is based in the United States. Bring strong Rust and Angular skills, plus excellent technical writing and communication abilities.

Qualifications

• Extensive experience with Angular and .NET development.
• Strong experience integrating Rust into multi-client apps using WASM/UNIFFI bindings.
• Familiarity with modern web authentication concepts (OAuth 2.0, OIDC, WebAuthn).
• Experience with Claude/LLMs or openness to learn how to work the technology.
• Excellent technical writing and ability to communicate complex problems clearly.
• Attention to detail and commitment to secure development practices.

Responsibilities

• Build and maintain authentication code in Rust core library, Angular clients, and IdentityServer back-end.
• Scope and refine initiatives; collaborate to design, document, and communicate solutions.
• Contribute to team discussions and drive toward actionable results.
• Provide timely, thorough code reviews and feedback.
• Triage, diagnose, and resolve community and customer-reported bugs.
• Update and validate core dependencies to ensure secure, stable supply chains.

Skills

Angular

.NET

Rust

WebAuthn

Technical writing

Communication skills

Tools

UNIFFI bindings

WASM

Job description

Senior Software Engineer II (Auth)

at Bitwarden in Engineering

Remote, U.S.

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.

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

• Meeting with our Recruiting Manager
• Interview with Auth team Engineering Manager and Platform Group Manager
• Panel interview with Auth team

A FEW REASONS TO WORK WITH US

• Our user community loves us and we love them. Come to work each day with a sense of purpose as we bring a more secure internet experience to everyone from our friends and family to the world’s largest organizations.
• Become an expert. You'll get immersed in the prominent technology markets of security and open source software.
• We are dedicated to building a diverse and talented team. Work remotely with motivated and supportive team members across the world.
• Learn and grow. Take on new challenges with the support of your team, and join our #growth-club to continue personal and professional development.

In the United States, the starting base compensation range for this role is $180,000 - $215,000. 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. See our careers page for a list of benefits. Please note that compensation outside the U.S. will differ based on the market.