Senior

Senior Software Engineer, Compute Platform at Reddit

An infrastructure-focused senior IC role building the Go-based APIs, Kubernetes controllers, and SDKs that orchestrate Reddit's multi-cloud compute fleet. Interviews go deep on Kubernetes internals, Linux/cgroups expertise, and independent ownership of large, ambiguous infrastructure projects.

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What this interview tests

Kubernetes controllers/operators and cluster reconciliation
Linux internals: cgroups, namespaces, multi-tenancy
Multi-cloud compute orchestration and resource packing/scheduling
Go-based infrastructure software design
Independent ownership of large, ambiguous infra projects

Common question themes

Design a Kubernetes controller to manage a specific workload lifecycle

Explain how cgroups/namespaces isolate workloads on a shared node

How you'd approach resource packing and GPU scheduling across cloud providers

A complex cross-system issue you debugged independently, end to end

Your open-source or CNCF-adjacent contributions

How candidates describe it

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

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