Senior Software Engineer, Identity & Access

Posted 7 Days Ago
Be an Early Applicant
Warsaw, Warszawa, Mazowieckie, POL
In-Office
Senior level
Artificial Intelligence • Information Technology • Software
The Role
Lead design and implementation of enterprise identity and access: SSO (OIDC/SAML), RBAC with query-time enforcement, SCIM provisioning, token exchange/on-behalf-of flows, service accounts, entitlements, session and token governance to enable secure, auditable access at scale.
Summary Generated by Built In
About the Company

StackAI (by Asana) is a no-code AI workflow platform that empowers companies to build, deploy, and scale AI-powered workflows easily. With thousands of users and rapidly growing enterprise adoption, our mission is to democratize access to LLMs and bring AI into the hands of every business operator, not just developers. An Asana Company, we're building the foundational platform for the AI-driven future of work

 
The role

Every large enterprise that adopts StackAI needs to control precisely who can do what, on whose behalf, across their whole organization. We're hiring a Senior Software Engineer, Identity & Access to build the access layer that makes that possible: the authentication, authorization, and access control that let our largest and most regulated customers adopt StackAI with confidence.

This is foundational work for enterprise adoption. Strong identity is what lets a large organization roll StackAI out across many teams, and lets their administrators manage all of it cleanly. You'll own that layer across the platform, from sign-on to fine-grained permissions.

 
What you'll do
  • 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.

     
What we're looking for
  • 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.

     

Identity is broad. If you're strong on most of this and excited to grow into the rest, we'd like to hear from you, even if you don't check every box.

 
Bonus points
  • SCIM and directory sync at scale.

  • Authorization frameworks and policy engines (OPA, Cedar, or Zanzibar-style systems).

  • Entitlements, usage-based metering, or billing systems.

  • Multi-tenant SaaS at scale.

  • Startup or growth-stage experience.

     
Why StackAI

You'll join a lean, high-impact team and own the access layer that lets the largest enterprises adopt Stack AI. Your work ships fast and is felt across the whole product.

StackAI is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Skills Required

  • 4+ years building backend systems
  • Significant time working on identity, authentication, or authorization
  • Deep knowledge of OIDC, OAuth2, SAML, and token exchange flows
  • Experience with multi-tenant RBAC and fine-grained authorization
  • Built or owned enterprise SSO and identity systems
  • Strong in Python and modern backend frameworks (FastAPI or similar)
  • Experience with identity-provider architecture and enterprise auth patterns
  • SCIM and directory sync at scale
  • Experience with authorization frameworks and policy engines (OPA, Cedar, Zanzibar-style)
  • Experience with entitlements, usage-based metering, or billing systems
  • Experience building multi-tenant SaaS at scale
  • Startup or growth-stage experience
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The Company
HQ: San Francisco, CA
12 Employees
Year Founded: 2023

What We Do

Enterprise AI trusted by IT - power your GenAI strategy with Stack AI. Backed by YC and Google. We are a small dedicated team of insanely talented individuals relentlessly pushing the boundaries of what’s possible with AI. We are pioneering a new horizontal platform allowing anyone to build and deploy AI agents and automations. Companies across industries -- including healthcare, legal, financial, logistics, and defense -- use our software to make their organizations faster, more efficient, and scalable, leveraging the power of AI. With strong backing from YC and Google, we're set to double our team size in 2025. This is an exciting time to join if you want to build a category-defining product with strong customer momentum. We're looking for user-centric, craft-focused, creative minds who work hard but don't take themselves too seriously. We're ambitious yet pragmatic. We move fast, but care about the important details. We're hiring for a range of roles. Reach out if you'd like to learn more

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