Shape the next-gen build system (Bazel) and CI/CD experience for every backend developer at Airbnb

Airbnb's Service Tools team owns the end-to-end developer lifecycle for backend service owners — build systems, integration testing, and deployment tooling — for the company's largest developer cohort. This role calls for 6+ years of industry experience, deep JVM and large-monorepo exposure, and hands-on build-system work, ideally with Bazel, to move core metrics like developer velocity and debuggability.

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What this interview tests

Build systems, especially Bazel, at monorepo scale
CI/CD tooling: merge queues, code coverage, integration testing
JVM depth and IDE/tooling experience (IntelliJ)
Cross-team platform adoption and prioritization
Developer experience metrics: velocity, debuggability, reliability

Common question themes

Design or debug a Bazel build system issue in a large monorepo

Describe a CI/CD improvement and how you measured developer-velocity impact

Solve a deep JVM performance or tooling problem

Drive adoption of a new developer platform capability across many teams

Prioritize an open-ended backlog of developer-experience issues

How candidates describe it

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

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