Senior Software Engineer (Provider/Business Unit Portals)

As a Senior Software Engineer on Bitwarden’s Provider/Business Unit Portals team, you will build and operate the Provider and Business Unit Portals. The former is built to service managed service providers (MSPs) and resellers who administer Bitwarden organizations on behalf of separate, external customers. The latter is is built for a single company's own administrators to manage multiple Enterprise organizations that all belong to that same company (e.g., different business units, subsidiaries, or departments). Both portals give administrators a single, centralized experience for creating and managing multiple Bitwarden Enterprise organizations at scale. This is a hands-on role. You will spend your time writing, reviewing, and shipping code to further the enablement of Enterprise governance. WHAT YOU WILL DO End-to-End Delivery & Ownership: Design, build, test, deploy, and operate secure, performant services and applications to support the Provider and Business Unit Portals. You are accountable for these services end to end, including the parts you did not personally write. Engineering Standards and Automated Quality: Set the bar in pull request review and own the team's conventions for testing, error handling, API design, and secure coding, keeping automated suites, integration harnesses, and CI/CD pipelines strong enough that manual testing is never the safety net. Maintain the architecture specifications, API contracts, and open source developer documentation that go with them. Decoupled Architecture and Service Boundaries: Maintain clean service boundaries and design resilient APIs so the Provider and Business Unit Portals can evolve independently of the core platform. Own the technical direction and record the reasoning behind significant decisions. Technical Mentorship: Grow the engineers around you. Pair on hard problems, give substantive design feedback, and mentor them to grow, Codebase Health: Contribute to performance, reliability, accessibility, and maintainability. Identify technical debt, articulate its cost, and sequence pragmatic refactoring alongside delivery. Operational Stewardship: Own the operational health, performance, and reliability telemetry of your services in production. Cross-Functional Partnership & Collaboration: Partner closely with Product, Design, Security, and the other teams' engineers to design and validate solutions before implementation begins. WHAT YOU BRING TO BITWARDEN Overall Experience: 5+ years building and operating production Enterprise software, with a track record of owning substantial, technically demanding features end to end as an individual contributor. Technical Stack - Expertise: Expertise in C# / .NET, with strong working proficiency in TypeScript / Angular or Rust and a willingness to build depth in the other. Technical Stack - Experience: Relational database design, optimization, and SQL Server Writing, consuming, and using SDKs / APIs AI-assisted development - preferably Claude Code