Architect the unified multi-entity Account model powering Coinbase's Identity platform

A senior backend role on Coinbase's Identity team (Accounts pod), leading the evolution from single-user models to a unified, multi-user/organization-aware account abstraction serving Tier-0/Tier-1 systems at massive scale. The interview will dig into API/data-model design for identity systems, reliability engineering, and technical leadership including mentoring and driving engineering standards.

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What this interview tests

Designing unified account/identity abstractions (multi-user, multi-org)
API and data-model design adopted across multiple consuming teams
Reliability, security, and observability for Tier-0/Tier-1 systems
Technical leadership: code/design reviews, engineering standards, mentoring
Cross-functional partnership with Product, Infrastructure, SRE, Compliance

Common question themes

Designing a migration from single-user to multi-entity account model

Decomposing a complex identity system into clean, adopted APIs

Handling a production incident in a login/session/MFA system

Driving engineering standards and mentoring other engineers

Balancing security and compliance requirements with product velocity

Responsible use of generative AI in engineering workflows

How candidates describe it

Real Senior Software Engineer interview stories — retold from candidates' public write-ups, with sources.

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