Senior Backend Engineer, Identity & Auth Platform

Vercel Inc.; San Francisco (CA); Hybrid; USD 196,000 - 294,000; Full time

Benefits offered by this job

Mentorship and events

WFH budget

Gearing up for role

Job summary

Vercel Inc. in San Francisco is seeking a senior engineer to own APIs, token infrastructure, authorization, and SDKs for the Connect platform. You will collaborate with external companies to simplify building agent integrations with their products, balancing uptime with performance.

This role is hybrid in San Francisco, with in-office days Monday, Tuesday, and Friday, and a focus on secure, scalable agent access across diverse systems.

Qualifications

• 6+ years building and operating production backend or full-stack systems.
• Deep understanding of OAuth 2.0/2.1, OIDC, and JWTs.
• Strong TypeScript, and comfort developing backend and frontend components.
• Security instinct for integration code — SSRF, DNS rebinding, and related threats.
• Experience integrating with many third-party APIs and messy auth flows.

Responsibilities

• Ship provider integrations end to end — auth flows, token exchange, app registration, and the configuration UI — from generic API-key and OAuth presets through bespoke cases like Snowflake Partner Connect, Slack manager apps, and Microsoft Entra.
• Own and improve our infrastructure (uptime, performance, secure storage of credentials and keys) and developer experience for Connect
• Work with industry leaders within and outside of Vercel to propose and implement new authentication and authorization protocols for AI era
• Build and harden event forwarding — signature verification inbound, project-scoped identity outbound, delivered to the right deployment and environment.
• Make Connect the obvious way to give an agent a credential, extending the SDKs , consent-redirect flow, and framework adapters.
• Reduce the cost of the next hundred integrations, so most new providers become configuration rather than code.

Skills

TypeScript

Backend development

Frontend development

OAuth / JWTs

Security in integrations

System design

Job description

Vercel Inc. in San Francisco is seeking a senior engineer to own APIs, token infrastructure, authorization, and SDKs for the Connect platform. You will collaborate with external companies to simplify building agent integrations with their products, balancing uptime with performance.

This role is hybrid in San Francisco, with in-office days Monday, Tuesday, and Friday, and a focus on secure, scalable agent access across diverse systems.