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. Learn more at bitwarden.com.  As a Senior Software Engineer specializing in Bitwarden’s cryptography layer, you will lead the design and development of the key hierarchy and cryptographic protocols that protects millions of users worldwide. You'll own critical encryption systems and complex technical challenges at the intersection of security, scalability, and user experience. This role offers unique opportunities to make significant contributions to both our open-source community and enterprise solutions. This is an all-remote team and we’re looking for someone located in the US. We do not offer visa sponsorship at this time.  RESPONSIBILITIES * Support Bitwarden goals by designing, developing and maintaining key hierarchies and cryptographic protocols that are secure and performant * Design and enforce secure key management practices across clients and servers to prevent key compromise and protect sensitive cryptographic material * Help design usable APIs that abstract crypto correctly for other developers * Build and maintain both internal and external documentation and specifications * Troubleshoot and resolve complex security vulnerabilities and issues that require deep technical knowledge of our systems WHAT YOU BRING TO BITWARDEN * Strong proficiency and experience in Rust. Experience with TypeScript and C# are a plus. * Experience designing and implementing secure cryptographic protocols * Familiarity with OS-level key management APIs and secure storage mechanisms across platforms * Practical knowledge of secure key management practices, including key generation, storage, rotation, and revocation * Ability to evaluate cryptographic library security, performance, and misuse resistance * 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 team * Interview with Engineering Manager * Interview/s with team members * Reference calls 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 $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. See our careers page for a list of benefits. Please note that compensation outside the U.S. will differ based on the market.