Roblox · Software Engineer (New Grad)
Roblox's new-grad loop pairs strong coding rounds with a systems-and-real-time flavor, reflecting a massive gaming and UGC platform where latency, concurrency, and scale are everyday concerns. Expect solid medium-to-hard algorithm and data-structure problems, sometimes with a nod toward performance, memory, or real-time/multiplayer reasoning, plus a behavioral round. Interviewers value efficient, correct code and candidates who care about how systems behave under heavy concurrent load. Communication and depth on a real project matter.
Practice this interview
Free · a live voice mock calibrated to this exact role
What this interview tests
- Algorithms & data structures (graphs, heaps, DP) with complexity focus
- Performance and memory under heavy load
- Real-time / simulation reasoning (per-tick state updates)
- Concurrency basics (race conditions, shared state)
- Scale awareness (millions of concurrent sessions)
- Ownership and depth on a real project (behavioral)
Common question themes
Spatial / grid problems (pathfinding, collision)
Simulate state updates over discrete ticks
Graph, heap, and DP problems with tight complexity
Reason about many concurrent players updating shared state
"How would this hold up at millions of concurrent users?"
"Tell me about a project or game you built and owned"
Modeled on a public Roblox new-grad SWE posting