Roblox
Senior
Senior Software Engineer, Ads Platform at Roblox — build ads infrastructure serving hundreds of millions of users
Interview for Roblox's Ads Platform team, where you'd architect backend systems for ads serving and delivery at massive scale, working across ML, backend, and analytics engineers. This role expects 5+ years shipping complex production systems and hands-on depth in distributed systems, messaging, and storage technologies.
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What this interview tests
- Distributed systems design for high-scale ads serving
- Kafka/Flink-based streaming pipelines
- Distributed SQL/NoSQL data modeling
- REST/gRPC microservices and containerized architecture
- Technical leadership and cross-team collaboration (ML, backend, analytics)
Common question themes
System design: build an ads serving/delivery pipeline that scales to hundreds of millions of users
Deep dive on a production system you built with Kafka/Flink/Redis — what broke and how you fixed it
How you've mentored engineers and led technical direction without formal authority
Tradeoffs in distributed systems: correctness vs. latency vs. reliability at scale
Coding/proficiency check in a systems language (C#, Go, Rust, Java, C++, or Python)
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