Senior Java Engineer



FusionAuth is a fast growing startup headquartered in Denver Colorado. We are expanding our team to help accelerate our growth and take FusionAuth to the next level.

Our mission is to make authentication and authorization simple and secure for every developer. This means building the best IAM (Identity and Access Management) and CIAM (Customer Identity and Access Management) solution in the world. If you are passionate about technology and want to join a company that is moving the industry forward, FusionAuth might be a perfect fit for you.

We are recruiting a Senior Java Software Engineer who will join our engineering team to help us achieve these goals. This exciting role will allow you to build new features, extend existing features, learn from customers to improve the product and participate in our growing developer community. For this role, you must be a creative and quantitative thinker. You should be interested in the authentication, authorization and user management space. You should be seasoned at writing secure and high-performance code. The ideal candidate will be a self-starter, fast worker and excited about growing a company from the ground up.

This position is based in the Denver area, and reports to the VP of Product Delivery.


Your responsibilities will include:

  • Writing high-quality, performant, and secure code
  • Writing extensive and thorough tests
  • Designing and producing new features
  • Maintaining our software with bug fixes and enhancements
  • Writing clear, high-quality documentation for new features
  • Participating in our platform roadmap and software architecture
  • Rotate as the on-call engineer to solve critical customer issues. While not the norm, we do have some off hours support requirements.
  • Provide technical support to our customers
  • Be a voice of positive change in the Engineering organization

Skills & Experience

Some things that describe what you do, and what you’ve done:

  • 10+ years of professional software development experience
  • You have a CS degree, or demonstrable experience with a broad set of theoretical topics
  • Highly proficient in OO design and implementation
  • Understanding of the full web stack (HTTP, TCP/IP, REST, etc)
  • Experience with building highly available, high-performance, scalable applications
  • Expertise with building multi-threaded, API-first applications
  • In-depth knowledge of unit and integration testing
  • Strong knowledge of databases, data modeling, and performance tuning
  • Experience up and down the entire stack, including cloud infra, operating systems, databases, back-end services, and JavaScript on the front end

All About You

Here are some qualities that we think will support your success at FusionAuth:

  • You take a quantitative and data-driven approach to solving problems
  • You have an interest in the auth space
  • You have strong opinions, based on experience, that you hold loosely
  • You learn new technologies and skills quickly
  • You’re comfortable with and excited about working on our open source projects
  • You love the startup vibe

Salary & Benefits

  • Salary range: $140,000 to $180,000 (depending on experience)
  • Benefits: Medical, dental, and vision
  • Bonus: Up to 10% depending on how well the company performs
  • 401k: Yes!
  • Education benefit: Yes!
  • Stock options: Yes!
  • Vacation: Flexible! Take what you need. :)

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