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Senior Blockchain Engineer, Moonshot

Alchemy· *Engineering
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Hybrid (Remote), Hybrid (New York), Hybrid (San Francisco)$205k - $230kFull-timePosted 1w ago

About the role

Take new blockchain infrastructure and product ideas from an uncertain problem to a working system. Help choose what to test, build the smallest experiment that answers important questions, and turn promising results into production software. Read protocol specs and unfamiliar code, collaborate with developers, and decide when to stop an experiment based on evidence.

Responsibilities

  • Identify developer or infrastructure problems that could justify a new blockchain capability or product, working with engineering, Product, and customer-facing teams.
  • Define each experiment’s hypothesis, success criteria, constraints, and time limit before building.
  • Prototype across the layers the problem requires: blockchain clients, RPC, indexing, transaction infrastructure, backend services, or smart contracts.
  • Read protocol specifications and implementation code, then test assumptions with reproducible benchmarks and failure cases.
  • Evaluate developer or operational value alongside technical feasibility, security, operating cost, and the effort required to support the system.
  • Take validated ideas through production design, testing, rollout, observability, and operational documentation with partner teams.
  • Write concise recommendations to continue, change direction, or stop, supported by the experiment’s results.
  • Participate in production support and incident response for the systems you ship. Own monitoring, runbooks, and fixes after launch.

Qualifications

  • A track record of taking ambiguous engineering problems through working prototypes and production delivery.
  • Deep hands-on knowledge of at least one blockchain: its execution model, transaction lifecycle, state, finality, and failure behavior.
  • Strong software engineering skills and experience building backend or distributed systems.
  • The ability to read unfamiliar code and specifications, form a testable hypothesis, and design an experiment that can disprove it.
  • Experience designing reproducible performance benchmarks and using profiling to distinguish CPU, memory, storage, and network bottlenecks.
  • Evidence of careful reasoning about correctness and security, especially where mistakes affect funds or chain state.
  • Product judgment: explain who needs a capability, what it improves, and whether the result warrants further investment.
  • Clear collaboration and documentation so another team can operate or extend what you build.

Skills

Required:Prototype design for blockchain-based systemsReading protocol specifications and unfamiliar codePerformance benchmarking and profilingSecurity and correctness reasoningProduct judgmentCollaboration & documentation

Benefits

  • Private Health Insurance
  • Gym Reimbursement
  • Commuter Benefits
  • Flexible Time Off
  • In-Office Group Meals
  • Learning & Development Stipend
  • Company Sponsored Conferences & Events
  • Books & Audiobook subscription with Bookster
Last updated Oct 25, 2026. Interested? Apply on the company site.
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About Alchemy

Alchemy | Blockchain infrastructure for developers

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