Senior Software Engineer, Java (Hybrid — Denver Metro preferred)

Remote Full Time Engineering Experienced

Job Title

Senior Software Engineer, Java

Location

Denver, CO preferred (Hybrid)

About FusionAuth

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FusionAuth is a fast-growing startup and leading provider of customer identity and access management (CIAM) software headquartered in Denver, Colorado. Our mission is to make authentication and authorization simple and secure for every developer. Our product helps businesses securely manage customer identities and access, ensuring a safe user experience for some of the largest brands in the world. We are committed to delivering exceptional value and satisfaction to our clients through top-notch service and support. With a great team and strong investors, we are expanding our team to help accelerate our growth and take FusionAuth to the next level.

Job Summary

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FusionAuth is hiring a Senior Software Engineer to build and extend our Java-based platform, trusted by thousands of organizations and downloaded over 10 million times. You will design and ship complex features end to end, from technical design through release, and apply protocol knowledge (OAuth 2.x, OpenID Connect, SAML) that customers rely on for correct, secure implementations.

This is a senior individual contributor role with real influence. You will review code for correctness and architectural fit, mentor Software Engineers on debugging and testing approaches, and identify tech debt before it slows the team down. You will partner directly with Product, DevSuccess, and Support to translate technical tradeoffs into decisions the business can act on.

Every feature you ship runs across customer-managed, self-hosted, and dedicated cloud deployments, so backward compatibility and upgrade paths matter on every change. This position reports to the Engineering Manager.

Responsibilites

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* Feature development: Design and build complex features end-to-end, from tec