Senior full-stack engineer revamping partner-enablement web apps for Netflix's Smart TV device ecosystem

This role is on the Enablement Apps team within Netflix's Client and Partner Technologies org in Warsaw, tasked with revamping web applications that manage the integrate-launch-operate-update-retire lifecycle for Smart TV+ partner devices, plus tools for Partner Payment experiences and Partner UI surfaces like the Discovery Row. It's a senior (IC4/5) full-stack position spanning backend services on the JVM (or Python/C#/Ruby) and React-based frontends, with heavy emphasis on legacy-system modernization and technical ambiguity.

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What this interview tests

End-to-end full-stack ownership: backend services (JVM/Java/Scala/Kotlin, Python, C#, or Ruby) plus React UIs
API design and consumption (REST and/or GraphQL) for partner-facing B2B systems
Modernizing and revamping legacy tools while evaluating refactor vs rebuild vs buy tradeoffs
Troubleshooting and operating systems built on microservice architecture
Driving technical solutions from ambiguous requirements through design, deployment, and cross-team collaboration
Applying operational efficiency practices, including Generative AI, to partner-enablement workflows

Common question themes

Walk through a full-stack feature you built end-to-end, from backend API design to the React UI

Describe a legacy system you inherited and how you decided between refactoring, rebuilding, or replacing it

Tell me about troubleshooting a bug across multiple interacting microservices — how did you isolate the cause

How do you scope a technical solution from ambiguous product requirements, working with PMs and other teams

Give an example of using GenAI or automation to improve operational efficiency in a tool you owned

How would you design a partner-facing tool for something like device onboarding or payment bundle management

How candidates describe it

Real Senior Full Stack Software Engineer 4/5 - Client and Partner Technologies interview stories — retold from candidates' public write-ups, with sources.

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