Build the developer platform that lets Roblox teams integrate safety/moderation capabilities in hours, not months

Design a Senior Software Engineer interview for Roblox's Safety Foundation team, the infrastructure backbone powering content moderation and safety workflows across the platform. Focus on backend/distributed systems depth in Go, experience building developer-facing platforms, and comfort scaling systems 10x while improving integration velocity for other teams.

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What this interview tests

Backend/distributed systems engineering in Go
Building developer-facing platforms/APIs for internal teams
Scaling systems 10x while controlling cost
CQRS, Event Sourcing, NoSQL (Cassandra/DynamoDB) exposure
Balancing security, auditability, and developer velocity

Common question themes

Tell me about a developer platform or internal API you built that other teams integrated with

How would you scale a backend system 10x in traffic while keeping cost growth in check

Have you used CQRS or Event Sourcing — walk me through a case where it helped or didn't

How do you balance auditability/security requirements against developer integration speed

Describe taking a project from concept to deployment end to end

How candidates describe it

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

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Interviewed October 2022 · London, United Kingdom

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Google L3 software engineer interview: phone screen, four coding rounds, and the Googleyness round

A candidate with two years of experience went from recruiter outreach to offer over about four months. The onsite was four 45-minute coding rounds — three of them featuring binary trees — and one round turned into a 25-minute chain of follow-ups about approximating an optimal solution at scale.

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Google L4 Software Engineer Interview: Eight Rounds, No Offer

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Interviewed February 2024 · Not specified

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