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Senior Java Engineer - Cloud Platform

Job in Greeley, Weld County, Colorado, 80639, USA
Listing for: 6AM City, LLC
Full Time position
Listed on 2026-06-04
Job specializations:
  • Software Development
    Software Engineer, Cloud Engineer - Software, Full Stack Developer, Java Developer
Salary/Wage Range or Industry Benchmark: 120000 - 165000 USD Yearly USD 120000.00 165000.00 YEAR
Job Description & How to Apply Below

Job Description

Job Title:

Senior Java Engineer - Cloud Platform

Location:

Denver, CO (Hybrid)

About Fusion Auth

Fusion Auth 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 seamless and 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 Fusion Auth to the next level.

Job Summary

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 and extend our existing product offering. While you’ll be expected to contribute in all areas of the product, this role will have a strong emphasis on working on the Fusion Auth cloud platform.

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.

Responsibilities
  • Writing high-quality, performant, and secure Java code
  • Writing extensive and thorough tests
  • Extending our cloud offering with security, scalability, and control plane features
  • Helping to maintain and extend the Fusion Auth terraform provider
  • Supporting other engineers with your cloud and platform expertise
  • Writing clear, high-quality documentation for new features
  • Participating in the on‑call engineer rotation, solving critical customer issues should they arise. 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
Qualifications
  • 10+ years of professional software development experience
  • Experience with many AWS services and deployment models
  • Strong platform engineering experience in a Linux environment
  • Experience with Kubernetes or similar container orchestration technologies
  • You have a CS degree, or demonstrable experience with a broad set of theoretical topics
  • Highly proficient in OO design and implementation
  • 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 infrastructure, operating systems, databases, back‑end services, and JavaScript on the front end
All About You
  • You take a quantitative and data‑driven approach to solving problems
  • You have a passion for security in general, and auth specifically
  • 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
Compensation

$120k‑$165k expected base salary range*

* Pursuant to various state laws, we must display the pay range for this job. Since we are willing to hire within a broad spectrum of qualifications, we also reflect a broad pay range. The expected base salary range that we are targeting for this position can be adjusted up or down based on individual qualifications. Individual salary is determined by qualifications, role, level and location.

Benefits
  • Comprehensive medical, dental & vision plans
  • 401k with employer match
  • Flexible spending account (FSA)
  • Equity grant
  • Paid holidays & flexible paid time off (PTO)
  • Professional growth & development opportunities

Note:

Applicants must be authorized to work for ANY employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa at this time.

Fusion Auth provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.
E‑Verify | Right to Work

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Position Requirements
10+ Years work experience
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