About the role
Senior Software Engineer, Identity & Collaboration Together.ai is looking for a Senior Software Engineer to take a leading role in the authentication, authorization, and collaboration systems that every Together product depends on. As part of the Product Foundations engineering group, the Identity & Collaboration team owns authentication flows (including SSO and OAuth), organizations, projects, API keys, and
the role-based access controls that enable secure collaboration at scale. Every customer interaction with Together relies on the systems we build. Whether it's a researcher accessing their models, an enterprise team collaborating on a shared project, or a developer making an API call, we make authentication seamless and invisible for simple cases while providing robust, enterprise-grade capabilities for complex organizational structures. Our work directly enables Together's growth from individual users to large enterprise teams, and we're actively building the next generation of collaboration features that will unlock new ways for customers to work together securely and efficiently across all Together products.
About
the Role Location: Hybrid in Amsterdam, NL Full-time: This means 40 flexible hours, Monday through Friday. You'll work with a good deal of autonomy, owning meaningful pieces of our identity and access platform end-to-end, spotting problems worth solving, and contributing to
the team's technical direction. You'll also help raise the bar around you through code and design review and by supporting more junior engineers.
Responsibilities Design and own authentication and authorisation systems end-to-end: SSO, OAuth/OIDC, SAML, organizations, projects, API keys, and role-based / attribute-based access control Make and document the technical decisions that shape how identity works across every Together product Build across the stack — Elixir/Phoenix services on the backend and TypeScript/Next.js on the frontend — and the APIs other teams build on Contribute directly to our Next.js product surface and the API layers behind it Run the Elixir/Erlang VM (BEAM) in production Identify and address technical debt and security risk in our area with sound judgment Treat code and design review as a core part of your contribution, and mentor more junior engineers Represent
