Define the multi-quarter architecture for the nodes, wallets, and indexers that power every crypto action across 60+ chains

This Senior Staff role leads technical strategy for Coinbase's Blockchain Platform team, which operates the nodes, indexers, wallets, and orchestration systems behind every core crypto action (send, stake, bridge, wrap) across 60+ blockchain networks and 300+ tokens. It requires 12+ years of engineering experience with 4+ years at staff-plus level, hands-on protocol-level blockchain experience, and a track record leading large cross-team architectural initiatives like wallet stack or indexing redesigns. Expect deep technical strategy questions on financial-grade correctness (idempotency, auditability, transaction finality) plus executive-level communication and using AI/agent automation to cut operational toil.

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What this interview tests

Multi-quarter architecture and technical strategy for blockchain node/wallet/indexing platforms
Protocol-level depth in at least one blockchain family (EVM, Solana, Bitcoin, L2s)
Financial-grade correctness: idempotency, auditability, transaction finality, key management
Leading large, ambiguous, cross-team architectural initiatives (e.g., wallet or indexing stack redesign)
Applying AI/agent-based automation to reduce operational toil with measurable results
Executive/cross-org stakeholder communication and securing buy-in for technical bets

Common question themes

Walk me through the largest cross-team architectural initiative you've led, from ambiguity to production

Describe hands-on protocol-level work on a specific blockchain — what staking, bridging, or tokenization system have you built

How have you ensured idempotency and auditability in a high-throughput financial transaction system

Tell me about an incident involving a correctness bug in transaction finality, key management, or reconciliation

Describe a concrete case where you used AI or agent automation to reduce operational toil, with measurable impact

Tell me about aligning skeptical executive or cross-org stakeholders on a major technical bet

How candidates describe it

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