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 - Technical Stack - Familiarity: - MVC design pattern for interaction with our Admin Portal - Entity Framework or adjacent ORM with implementations of Postgres, MySQL, and SQLite - Migration Judgement: A track record of running incremental modernization inside a live codebase, such as framework upgrades, strict-typing rollouts or state-management migrations, without halting feature delivery or fragmenting the codebase into two competing styles. - T-Shaped Engineering Mindset: Practical experience with containerized environments (Docker/Kubernetes), automated test frameworks (unit, integration, and end-to-end), and SRE/observability tools (APM, alerting, and telemetry dashboards). - Secure Coding: Familiarity with zero-trust and zero-knowledge security architectures, encryption standards, and threat-modeling methodologies. - Collaborative Spirit: A highly collaborative and adaptable mindset, excited to work in rapid, outcome-driven feedback loops. - Open Source Passion: Excitement and enthusiasm for open source, developer advocacy, and building a more secure internet. - Problem-Solving: Excellent problem-solving skills, valuing written, clear documentation and using data to make technical decisions. Why Join 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. 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. If you enjoy being hands-on, solving hard engineering problems, and having a genuine influence on how products are built, we'd love to hear from you.