FusionAuth

FusionAuth builds authentication and authorization software for web and mobile applications. The company emphasizes an API-first approach, a flexible deployment model (self-host, customer cloud, or run in FusionAuth cloud), and a mature codebase. Recent acquisition of a fine-grained authorization company (Permify) expands work in that area. The CTO is the founder and actively codes. The product has a full-featured free tier to ease sales, while core software is commercial and supporting infrastructure is often open source. Roles vary between remote (USA and Europe for certain positions) and onsite in Denver, CO. Technologies in use include modern Java, PostgreSQL, Docker, Kubernetes, MySQL, OAuth, SAML, and OIDC. See the careers page for full job descriptions, benefits, and application links.