Senior Fullstack Engineer, Identity Platform
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Job Description
Senior Fullstack Engineer developing enterprise authentication infrastructure for Zapier's Identity Platform. Managing authentication systems and user sessions while ensuring security for larger enterprise customers.
Responsibilities:
- Design and maintain authentication and session systems as Zapier scales to larger and more security-conscious customers.
- Own user session propagation and JWT validation across a multi-service architecture.
- Build enterprise authentication controls and governance APIs.
- Build and maintain platform libraries consumed by dozens of internal teams.
- Treat reliability, latency, and efficiency of auth systems as non-negotiables.
- Respond to authentication-related incidents and participate in on-call rotation.
- Enable Security, Enterprise Response, and product team partners to move faster by removing auth bottlenecks.
Requirements:
- You've set the vision and built identity systems for enterprise SaaS at scale.
- You work through AI agents, not alongside them.
- You think in platforms, not features.
- You're comfortable across the stack.
- You believe enterprise can move fast, and you ship through ambiguity to prove it.
- You work close to the customer.
- You own your work, yourself, and your communication.
Benefits:
- Offers Equity
- Offers Bonus
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