Shape Replit's mobile app - built with React Native, Expo, Swift, and Kotlin - for AI-first app creation

Build the end-to-end mobile experience where users create and publish native apps from their phone using Replit's agentic platform. The interview should test React Native depth (or native iOS/Android background transitioning to it), UI rendering performance, and mobile UX judgment specific to an AI-first creation flow.

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What this interview tests

React Native, Expo, and cross-platform mobile development
UI rendering performance optimization
Debugging and deploying production iOS/Android apps
Mobile UI/UX judgment and craft
App quality and observability improvements
Designing AI-first mobile creation flows

Common question themes

Which of the three profiles (RN expert, mobile web specialist, native dev exploring cross-platform) fits you and why

Tell me about a UI rendering performance problem you diagnosed and fixed

Walk me through debugging and shipping a production iOS or Android release

Describe a mobile UX decision you made that most engineers would have skipped

How would you improve observability of a mobile app in production

How would you design a mobile feature that makes 'AI-first' app creation feel natural

How candidates describe it

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

Google · L3 Software EngineerOffer

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.

Interviewed June 2020 · Bangalore, IN

Google · L4 Software EngineerNo offer

Google L4 Software Engineer Interview: Eight Rounds, No Offer

An L4 Software Engineer candidate went through two phone screens, three onsite rounds, a culture conversation, and a team-matching call with a Google hiring manager, then watched the process stall for about a month and a half over a tightened experience requirement before an added extended round ended without an offer.

Interviewed February 2024 · Not specified

Google · L5 Software EngineerNo offer

Google L5 software engineer interview: phone screening, three onsite rounds, system design, and a late rejection

A candidate interviewing for an L5 role went through a phone screening, three onsite coding rounds, a mobile system design round, and a Googleyness and Leadership round. Two of the four technical rounds went poorly by the candidate's own assessment, and after roughly two months of silence the recruiter reported that the role had been closed.

Interviewed January 2023 · Not specified

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