Senior Engineer - Rust Noida, Delhi NCR

Bitwarden Inc.; Delhi; On-site; INR 2,400,000 - 4,000,000; Full time

Job summary

Bitwarden India Engineering COE seeks a seasoned Rust engineer to implement WebAuthn/FIDO2 within an end-to-end encrypted vault. You will contribute to the shared SDK, work on language bindings, and shape secure credential flows across Bitwarden clients.

You will review designs, deliver new features, and help evolve cryptographic workflows while collaborating with global teams to advance secure authentication and open-source initiatives.

Qualifications

• Expertise in producing and maintaining production Rust components, including libraries and FFI bindings.
• Ability to read and implement standards from specifications with edge-case handling.
• Knowledge of applied cryptography and public-key concepts to reason about security.
• A rigorous approach to correctness and secure coding practices.
• Experience using AI tooling in development/testing workflows.

Responsibilities

• Design, build, and maintain Bitwarden's implementation of WebAuthn and FIDO2 in Rust, including credential creation, assertion, and storage within an end-to-end encrypted vault.
• Contribute to the shared Rust SDK, including bindings and FFI for cross-platform clients.
• Shape emerging standards for credential portability and secure imports/exports between providers.
• Become expert on Bitwarden APIs and cryptographic constraints of a zero-knowledge product.
• Participate in code reviews, knowledge sharing, and delivering new features and bug fixes.
• Review and approve community-submitted bug fixes as needed.

Skills

Rust

FFI

Cryptography basics

Code reviews

AI tooling

TypeScript

Tools

Electron

Web tech

Job description

Bitwarden promotes better internet security and safety with the leading open source password management solution for individuals, teams, and business organizations. Our philosophy on security is that "we are all in this together" – we continue to offer a full-featured free version of Bitwarden so that everyone can be protected with strong password management. We also provide enterprise-grade solutions to some of the largest companies in the world, and will continue to innovate in the identity and authentication market as the world starts to grow beyond passwords. Read more onthe Bitwarden blog .

This is a standards and systems engineering role. The work is written primarily in Rust, in the shared SDK consumed by every Bitwarden client, and it demands unusual precision: you will implement specifications where a subtle misreading produces a credential that fails to work on one relying party out of a thousand, and you will do it inside a zero-knowledge, end-to-end encrypted architecture where the private key material can never be exposed to our servers.

WHAT YOU WILL DO

• Design, build, and maintain Bitwarden's implementation of the WebAuthn and FIDO2 standards in Rust, including credential creation, assertion, and storage within an end-to-end encrypted vault
• Participate in the hands-on design, development, and evolution of the shared Rust SDK, including language bindings and FFI, consumed across all Bitwarden clients
• Implement and help shape emerging standards for credential portability and secure import and export between providers
• Become an expert on the Bitwarden APIs and the cryptographic and architectural constraints of a zero-knowledge product
• Participate in code reviews, learning, and spreading technical knowledge
• Independently plan, estimate, and deliver new feature work and bug fixes
• Occasionally review & approve bug fixes submitted by the user community

WHAT YOU BRING TO BITWARDEN

• Expertise in developing and maintaining production Rust components, including the design and application of libraries, language bindings, and FFI
• Experience implementing a standard or protocol from its specification, and the discipline that requires — reading the spec closely, handling the edge cases, and testing against real-world implementations rather than assuming conformance
• Working knowledge of applied cryptography — you can reason about public key cryptography, signatures, and key handling, and you know where the sharp edges are
• A rigorous approach to correctness — you write readable, testable code, and you think carefully about failure modes in software that handles sensitive data
• Experience using AI tooling in your development and testing workflow (Anthropic Claude preferred)
• Experience with Electron, TypeScript, and other web tech for cross-platform desktop applications and web clients is 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

Why Join Us

This is an opportunity to play a foundational role in shaping our India Engineering COE from the ground up.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. You'll work alongside talented global teams, solve meaningful engineering challenges, influence how we scale our engineering organization & contribute to products used by customers around the world.

If you're passionate about building exceptional teams, enabling engineering excellence, and making a lasting impact within a fast-growing engineering company, we'd love to hear from you.

Equal Opportunity Employer

We are committed to fostering an inclusive workplace where everyone can do their best work. We welcome applicants from all backgrounds and make employment decisions based on skills, experience, qualifications, and business needs.