Senior Java Software Engineer

FusionAuth (Headquarters: Denver, CO, USA)

Java Modern Java MySQL PostgreSQL Docker Kubernetes OAuth SAML OIDC Authentication Authorization Security API Backend Onsite Software Engineer Back End Engineer

FusionAuth is seeking a Senior Java Software Engineer to join our team ONSITE in Denver, CO. Our mission is to simplify and secure authentication and authorization for developers globally.

**About FusionAuth:**
We provide a flexible authentication platform with unique deployment options (self-host, private cloud, or our cloud SaaS). Our API-first design is developer-centric, and our product, while mature (8+ years), is continuously evolving with new features. We're founder-led (CEO codes!), profitable, and recently secured $65M in funding to fuel growth. We pride ourselves on high-quality software and excellent customer support. Key technologies include Modern Java, MySQL, PostgreSQL, Docker, and Kubernetes.

**Role & Responsibilities:**
As a Senior Java Software Engineer, you will be instrumental in designing, developing, testing, and maintaining features for the core FusionAuth identity platform. You will work with modern Java and related backend technologies, contributing to a mission-critical application used by companies worldwide. You'll tackle complex challenges in the authentication and authorization space, ensuring our platform remains robust, scalable, and secure.

**Technical Skills Required:**
*   Strong proficiency in modern Java development.
*   Experience with relational databases like MySQL and PostgreSQL.
*   Familiarity with containerization (Docker) and orchestration (Kubernetes).
*   Understanding of web application architecture and APIs.
*   Knowledge of authentication/authorization standards (OAuth, OIDC, SAML) is a plus.

**Ideal Candidate:**
You are passionate about building high-quality, reliable software. You enjoy working on complex backend systems and have a strong sense of ownership. You thrive in a collaborative environment and are eager to contribute to a product that empowers developers. You appreciate the importance of security and scalability in application design. This is an ONSITE role in Denver, CO.