Lead large-scale distributed systems powering real-time trading and balances at Robinhood

Robinhood is hiring a Senior Backend Engineer for its Crypto/Brokerage/Core Engineering org to design and own large-scale distributed systems supporting real-time trading, balances, and platform capabilities, with correctness and reliability as first-order requirements. Interview centers on distributed systems design under strict correctness/availability constraints, technical leadership of complex projects, and mentoring.

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What this interview tests

Low-latency, large-scale distributed systems in production
Correctness and availability guarantees for financial/trading systems
REST API design in partnership with frontend/data engineering
Technical leadership of complex, ambiguous projects
Mentoring engineers through code review and design discussions

Common question themes

Design a distributed system for real-time balances or trade execution with strict correctness guarantees

Tell me about a race condition or partial-failure bug you found in a production financial system

Walk me through a REST API you designed and how the contract changed as requirements evolved

Describe a large technically complex project where you owned the architecture decision

Give an example of mentoring an engineer through a design or code review disagreement

How candidates describe it

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

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