Senior Software Engineer, Identity & Access

StackAI

Senior Software Engineer developing authentication and access control for Stack AI's no-code AI platform. Collaborating on identity management and access governance for enterprise customers.

Posted 6/19/2026full-timeSan Francisco • California • 🇺🇸 United StatesSenior💰 $220,000 - $240,000 per yearWebsite

Tech Stack

Tools & technologies

Python

About the role

Key responsibilities & impact

Own enterprise sign-on. Deliver SSO across OIDC and SAML so customers onboard with their own identity provider.
Own authorization and RBAC. Build role-based access control with fine-grained, query-time enforcement across the product.
Own provisioning and lifecycle. Deliver SCIM provisioning and directory sync so user and group management stays in step with the customer's directory.
Own delegated and machine identity. Build token exchange, on-behalf-of flows, service accounts, and domain-wide delegation so agents and services act with scoped authority.
Own access governance. Build the entitlements, session and token management, and controls that keep access clean and auditable at scale.

Requirements

What you’ll need

4+ years building backend systems, with significant time spent on identity, authentication, or authorization.
Real depth in OIDC, OAuth2, SAML, token exchange, and multi-tenant RBAC.
You've built or owned enterprise SSO and identity systems, with a strong grasp of identity-provider architecture and enterprise auth patterns.
Strong in Python and modern backend frameworks (FastAPI or similar).
You care about clean, well-architected access control and the experience of the administrators who manage it.

Benefits

Comp & perks

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Hard Skills & Tools

PythonOIDCOAuth2SAMLRBACSCIMtoken exchangeFastAPIbackend systemsidentity systems

Soft Skills

clean architectureaccess controladministrator experience