Full-stack SDE on Amazon Ads' Reach Extension team — React/TypeScript front end, Kotlin/AWS back end

Join Amazon Ads' Reach Extension team in Edinburgh building advertising products used by millions of Amazon customers. This is a full-stack role spanning React/TypeScript client code, Kotlin and Elasticsearch backend services on AWS, and end-to-end ownership from design through operational support at 24x7 global scale. A good fit for engineers who want both front-end and distributed-systems depth plus direct exposure to advertiser-facing product decisions.

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Likely format

Likely Amazon-style loop with Leadership Principles behavioral questions alongside coding/system design, per Amazon's standard SDE interview process.

What this interview tests

Full-stack ownership (React/TypeScript + Kotlin/AWS backend)
Object-oriented design and architecture decisions at scale
Reliability and correctness at 24x7 global scale
Elasticsearch-backed services
Cross-functional collaboration (UX, PM, partner teams)
Iterating on testing practices and architecture

Common question themes

Design a feature end-to-end spanning a React client and a Kotlin backend service

Tell me about an architecture or design pattern decision you drove on a past project

How would you model and query advertiser/campaign data in Elasticsearch at scale

Describe operating a system that must be reliable and accurate 24x7

Tell me about a time you worked with UX/PM to ship a customer-facing feature

How do you approach improving testing practices or revising architecture as requirements evolve

How candidates describe it

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

Amazon · SDE I (New Grad, MS CS)Offer

Amazon SDE 1 new grad loop: three online assessments, three interviews, offer in five days

A master's new grad went through Amazon's full three-part online assessment and three 45-minute virtual interviews. Every round opened with Leadership Principles questions before the coding began, and the offer landed within five business days.

Interviewed October 2019 · Seattle, WA, US

Amazon · SDE I (New Grad)Offer

Amazon SDE 1 new grad interview: one OA, four back-to-back onsite rounds, offer

A fresher found the posting through a LinkedIn connection, cleared the OA within a week of applying, and faced a six-hour virtual onsite: four one-hour rounds where every behavioral answer drew three to four follow-up questions.

Interviewed January 2021 · Seattle, WA, US

Amazon · SDE INo offer

Amazon SDE I Interview Experience: Global Selling Team, 2022

A LinkedIn referral bypassed Amazon's usual online assessment for this SDE I candidate, who then worked through a telephonic DSA screen and two technical rounds pairing coding problems with Amazon Leadership Principles questions before receiving no further response.

Interviewed March 2022 · Not specified

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