Senior Software Engineer (Data Services)

• Build the systems that turn blockchain activity into data developers can use. Alchemy’s Data Services work includes token, portfolio, and transfer APIs, with streaming in the updated roadmap
• You will own backend projects from ingestion through serving, making data correct, fresh, and fast to query. You will work with Product and customer-facing teams to understand what developers need, then ship improvements and measure their effect on reliability, performance, and cost
• Build and operate blockchain ingestion, indexing, storage, and API-serving systems
• Handle reorganizations, retries, duplicate events, and historical backfills without silently losing or corrupting data
• Improve query performance and data freshness. Make those properties observable to the team and understandable to customers
• Extend API capabilities and chain coverage, with tests for differences in chain behavior and data semantics
• Develop streaming and event-delivery capabilities with explicit guarantees for ordering, replay, and failure recovery
• Reduce the cost of storing, processing, and serving data through measured changes to architecture and query execution
• Participate in production support and incident response for the systems you own. Maintain monitoring, runbooks, safe rollouts, and fixes that prevent recurrence
• Within three months:
• You have shipped a customer-facing improvement and can show its effect on data quality, freshness, latency, or cost
• You own a production component, have tested its recovery behavior, and have proposed the next improvement using operational evidence and developer feedback

Benefits

• Health, dental and vision insurance
• HSA
• Flexible time off
• Group meals
• 401k plan
• Company retreats
• Conferences and events
• Gym membership
• Commuting benefits
• Relocation bonus
• Paid parental leave
• Home office stipend

• Evidence that you can diagnose a production problem and improve the system beyond the immediate fix
• Experience reasoning about consistency, partitioning, asynchronous processing, and failure recovery
• Blockchain experience is helpful, but not required. You should be interested in learning how chain behavior affects data correctness
• A track record of independently designing, shipping, and operating production backend or distributed data systems
• Strong programming skills in a production backend language, plus experience with databases, indexing, and query performance
• Clear communication and the ability to turn an ambiguous customer problem into a scoped engineering project
• Sound API design judgment, including compatibility, pagination, error handling, and data contracts
• Developer-facing data APIs, real-time delivery, or large historical datasets
• ClickHouse or other analytical databases; Kafka or similar streaming systems
• Blockchain indexers, EVM logs and traces, finality, or non-EVM data models
• Storage migrations and performance or cost optimization under production traffic