Coinbase
Senior
Build the platform APIs that abstract blockchain protocol complexity for Coinbase's product teams
Interview for Coinbase's Senior Software Engineer role on the Blockchain Networks team within Platform, building infrastructure that turns blockchain state machines into reliable internal APIs for new assets, stablecoins, and staking. This mock covers distributed systems design, multi-chain protocol depth, and owning multi-quarter infrastructure initiatives end-to-end including on-call. Solid prep for a senior backend/infra engineer targeting crypto-native platform teams.
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What this interview tests
- Abstracting blockchain protocol complexity (Bitcoin, Ethereum, L1/L2) into platform APIs
- Designing and scaling distributed systems for high-throughput, low-latency workloads
- Decomposing monoliths/legacy systems into well-bounded microservices with clear contracts
- Defining SLOs, observability, and owning on-call for owned services
- Leading multi-quarter initiatives: chain integrations, re-architecture, data migrations
- Golang/Kafka/Redis/MongoDB infrastructure experience and SDK/data-contract design
Common question themes
Design an API layer that abstracts a blockchain's state machine for internal consumers
Walk me through owning a production service end-to-end, including on-call
How would you decompose a legacy monolith into bounded microservices
Tell me about a multi-quarter infrastructure initiative you led and its tradeoffs
Describe your direct experience integrating with a blockchain protocol
How do you define SLOs and observability for a new platform primitive
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