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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Software Engineer (Hybrid, Denver Metro Preferred) - **Company:** Inversoft, LLC - **Location:** Broomfield, CO, United States - **Experience:** Expert - **Salary:** $190,000 - $230,000 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Application Integration Architecture, User Authentication, Automation of Tests, Databases, Relational Databases, Design of User Interfaces, Human-Computer Interaction, Java Virtual Machine (JVM), PostgreSQL, OAuth, Open Source Technology, OpenID, Open Web Application Security, Systems Development Life Cycle, Security Assertion Markup Language (SAML), Software Engineering, Management of Software Versions, Cloud Platform System, Claude Code, Customer Identity Access Management, Kubernetes, Information Technology, Production Code, Data Management - **Published:** November 7, 2026 - **Apply:** https://www.careerbuilder.com/job-details/staff-software-engineer-hybrid-denver-metro-preferred-denver-co--b7234f66-db7e-40bf-a313-5b9d4bd445d4 ## About the Role Software Engineering, Startup, Authentication, User Interface/Experience (UI/UX), Identity Data Management, Customer Satisfaction, Software Engineering, Mentoring, Technical/Engineering Design, Problem Solving Skills, * Education: Bachelor's degree in Computer Science or equivalent demonstrable technical depth. * Experience: 10+ years of professional software engineering, with demonstrated staff-level technical competency. * Hands-on development: Currently writes and ships production code. This role stays in the code, so recent, active engineering is required. * CIAM protocol depth: Production-grade experience with OAuth 2.x, OIDC, and SAML, including the ability to identify subtle misimplementations, guide protocol-correct designs, and handle federation and security edge cases. * Java proficiency: Strong Java skills, including a working understanding of the JVM. FusionAuth's core application is Java-based. * Database depth: Experience tuning PostgreSQL (or a comparable relational database) at scale. * Deployment architecture: Experience designing or supporting software deployed across self-hosted, or dedicated cloud environments, including backward compatibility and upgrade paths. * AI tooling and practices: Uses AI development tools (for example, Claude Code or Codex) as part of everyday workflow, and has experience helping a team adopt AI-augmented development practices. FusionAuth is actively standardizing on AI tooling across the SDLC, and this role helps drive that adoption. * Pragmatism: Appreciates first-principles thinking, but knows when to stop theorizing and start building. * Work location: FusionAuth is headquartered in the Denver metro area, and we value the collaboration that comes from working together in person. We strongly prefer candidates local to the Denver metro who can be onsite 1-2 days per week. We are open to candidates in other locations who are willing to travel to our office 2 -3 times per year., * CIAM product experience: Direct experience building or working within a CIAM product or identity platform. * Emerging standards: Familiarity with emerging identity protocols and standards (FIDO2/passkeys, DPoP, token binding, OAuth 2.x drafts). * Kubernetes in production: Experience diagnosing container and pod issues and reasoning about K8s networking, storage, and resource limits in production. * Security and compliance: Familiarity with compliance frameworks (SOC 2, FedRAMP, GDPR) and their impact on architectural decisions. * Open source and thought leadership: History of contributing to open-source identity or security projects, or publishing technical writing on identity topics. * Mentoring junior engineers: A track record of ramping early-career engineers to productive, independent contributors. ## Description * Core Engineering & Ownership: Tackle the most demanding platform and feature initiatives within the FusionAuth core product. Deliver resilient, secure, and thoroughly tested production code to resolve complex, open-ended technical challenges. Lead major end-to-end projects, collaborating with peers to manage everything from scoping and estimation to technical design and general availability. * Technical Design: Write Technical Design Documents (TDDs) for key initiatives, advocating clear technical directions while remaining receptive to feedback. Provide strategic guidance to senior engineers on architectural plans to ensure alignment with FusionAuth's standards for quality, security, reliability and scalability. * Quality & Review Standards: Elevate code and architectural review standards across the organization, integrating continuous learnings into the AI software development lifecycle. Define and enforce standards for architectural integrity, and testing quality, while advancing test automation and coverage to satisfy enterprise-grade reliability requirements. * CIAM protocol expertise: Design advanced OAuth 2.x, OIDC, and SAML flows for enterprise deployments. Handle security edge cases and federation patterns, and guide protocol-correct implementation across the product. * Customer engagement: Engage directly with enterprise customers and prospects on implementation guidance, integration architecture, and troubleshooting complex auth scenarios. * Deployment and compatibility: Factor FusionAuth's diverse deployment targets into every decision. Protect backward compatibility, API versioning, and upgrade paths across thousands of customer-managed environments, and apply security and compliance judgment (OWASP, data residency, encryption, audit requirements like GDPR) to how you build. * Mentorship and technical influence: Mentor senior engineers toward Staff-level thinking and autonomy, and ramp junior engineers through pairing and review. Build consensus on hard technical calls across teams, and communicate technical strategy to stakeholders with business context, representing engineering with Product, Sales Engineering, and Support. * AI Integration & Workflow Optimization: Evaluate and implement AI-driven solutions and organizational context across the engineering team, embedding AI-augmented development and automated testing into everyday practices as FusionAuth modernizes its software development lifecycle., * Application Submission: We value authentic, thoughtful responses. Copy/pasted or AI-generated answers to application questions that don't reflect your own experience may disqualify your application. * In-Person Interview: Please be aware that participating in an in-person interview is encouraged so we can get to know each other. FusionAuth reimburses reasonable travel and lodging expenses associated with onsite interviews. * Work Authorization: Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or assume sponsorship of an employment Visa at this time. If you are passionate about technology that solves real-world customer problems, and want to join a company that is moving the industry forward, FusionAuth is a perfect fit for you!