Senior Software Engineer, AM+ Auth

Gravitee

. Design and deliver features end to end, from discovery and technical design through implementation, testing, release, and iteration.

Posted 9/22/2026full-timeDenver • Colorado • United StatesSenior💰 $160,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining identity and authorization features, with a strong focus on OAuth 2.0, OIDC, and security best practices. Proficient in backend software development, automated testing, and collaborative problem-solving in a production environment.

Highest-signal resume keywords

Java DevelopmentOAuth 2.0 ImplementationJWT ManagementMongoDB MigrationAutomated Testing

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaOAuth 2.0OIDCSAML 2.0JWTMFAWebAuthnMongoDBJDBCMaven

Soft Skills

Clear CommunicationCollaborative Problem-Solving

Tools & Technologies

GitDockerKubernetesVert.xRxJavaAI Coding Assistants

Industry Keywords

Identity ManagementAuthorizationSecurity Best PracticesProduction SoftwareAPI Gateway

Tech Stack

Tools & technologies

CloudDockerJavaKubernetesMavenMongoDBRxJava

About the role

Key responsibilities & impact

Design and deliver features end to end, from discovery and technical design through implementation, testing, release, and iteration.
Build and maintain identity and authorization features of Gravitee Access Management across the AM runtime and Gamma.
Implement and support OAuth 2.0, OIDC, SAML 2.0, SCIM, and FAPI/CIBA/UMA profiles.
Manage JWT, JWKS, key rotation, revocation, introspection, MFA, step-up authentication, WebAuthn/FIDO2, IdP federation, and social login.
Maintain secure defaults, certificate and secret handling, consent, audit logs, and defenses against token replay, SSRF, and account takeover.
Own safe migrations and backward compatibility across MongoDB and JDBC, including multi-domain and multi-region deployments and endpoint performance.
Own US-hours Level 3 and Level 4 customer escalations as part of the L3 pager-duty rotation.
Use LLMs and AI-assisted development tools for prototyping, implementation, testing, debugging, and exploration while validating generated work.
Write meaningful automated tests and contribute to reliable delivery practices.
Collaborate with product managers, designers, engineers, and technical leaders, including the Europe-based AM team.
Share knowledge and contribute to code and design reviews as identity standards and protocols evolve.

Requirements

What you’ll need

5+ years building and running production backend software on a team that ships and supports its own product; personally resolved production incidents.
Strong Java experience; C# accepted if the object-oriented depth is there.
Experience with Maven and a reactive stack such as Vert.x/RxJava.
Deep working knowledge of OAuth 2.0 and OIDC flows, SAML 2.0, SCIM, and FAPI/CIBA/UMA profiles.
Solid grasp of JWT, JWKS, key rotation, revocation, introspection, MFA/step-up, WebAuthn/FIDO2, and IdP federation.
Security-first mindset covering secure defaults, certificate and secret handling, audit logging, token replay, SSRF, and account-takeover risks.
Experience with safe migrations and backward compatibility across MongoDB or JDBC-backed relational databases.
Git-based workflow, code review, and writing automated tests.
Hands-on experience using LLMs or AI coding assistants, with judgment to review and improve their output.
Clear communication, collaborative problem-solving, and ability to take an ambiguous problem through to production.
Desired: API gateway, proxy, service-mesh, Kubernetes operators and CRDs, OpenAPI tooling, Envoy, Docker, Kubernetes, cloud-native delivery, MCP, A2A, tool calling, LLM proxies, LLM-powered applications, RAG systems, agentic workflows, open-source software, or enterprise developer platforms.

Benefits

Comp & perks

Competitive medical coverage.
Pension / 401(k) program options.
Stock options - you build it, you own it.
25 days of holiday plus in-country national holidays.
Three mental health days and a wellness allowance.
Your birthday off.
A professional development budget to support your growth.
A hybrid work culture with hubs across regions.
Quarterly team events and an annual company offsite.
A collaborative, international company culture.
Opportunities to grow your scope and career as Gravitee grows.