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ChairNerd (SeatGeek Engineering Blog)

Code, Design, and Growth at SeatGeek

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ChairNerd is SeatGeek's engineering blog, covering code, design, and growth at the company. It includes posts on Checkpoint, an internal IAM automation platform built to address slow, confusing, and sometimes invisible access requests, and the spread of admin access through workarounds. Checkpoint is designed to make access discovery, requests, approvals, extensions, and revocations a default workflow.

Checkpoint centers on a bundle catalog: bundles are pre-defined permission sets for a service or workflow, defined as Terraform config in Git and reviewed through CODEOWNERS and group-based approvals. Bundles are transformed into IAM policies and applied to a user's permission set in AWS IAM Identity Center, with temporary access expiring automatically. The platform is API-first, with a web UI, Slack slash commands, and direct API access. It includes real-time risk scoring based on bundle metadata, request duration, and ownership, with approval routing to service owners, the platform team, or Security. Okta groups serve as the identity foundation, with each employee mapped to a unique permission set and a single AWS role assembled from active bundles.

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